WO2004092800A1 - Telephoto lens - Google Patents

Telephoto lens Download PDF

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Publication number
WO2004092800A1
WO2004092800A1 PCT/KR2003/000946 KR0300946W WO2004092800A1 WO 2004092800 A1 WO2004092800 A1 WO 2004092800A1 KR 0300946 W KR0300946 W KR 0300946W WO 2004092800 A1 WO2004092800 A1 WO 2004092800A1
Authority
WO
WIPO (PCT)
Prior art keywords
lens
ocular
digital camera
camcorder
fixed
Prior art date
Application number
PCT/KR2003/000946
Other languages
French (fr)
Inventor
Yong Joo Lee
Original Assignee
Santarossa Korea Co., Ltd
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by Santarossa Korea Co., Ltd filed Critical Santarossa Korea Co., Ltd
Priority to AU2003230339A priority Critical patent/AU2003230339A1/en
Publication of WO2004092800A1 publication Critical patent/WO2004092800A1/en

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Classifications

    • G—PHYSICS
    • G02—OPTICS
    • G02B—OPTICAL ELEMENTS, SYSTEMS OR APPARATUS
    • G02B13/00—Optical objectives specially designed for the purposes specified below
    • G02B13/04—Reversed telephoto objectives
    • G—PHYSICS
    • G02—OPTICS
    • G02B—OPTICAL ELEMENTS, SYSTEMS OR APPARATUS
    • G02B15/00—Optical objectives with means for varying the magnification
    • G02B15/02—Optical objectives with means for varying the magnification by changing, adding, or subtracting a part of the objective, e.g. convertible objective
    • G02B15/10—Optical objectives with means for varying the magnification by changing, adding, or subtracting a part of the objective, e.g. convertible objective by adding a part, e.g. close-up attachment
    • G02B15/12—Optical objectives with means for varying the magnification by changing, adding, or subtracting a part of the objective, e.g. convertible objective by adding a part, e.g. close-up attachment by adding telescopic attachments
    • G—PHYSICS
    • G02—OPTICS
    • G02B—OPTICAL ELEMENTS, SYSTEMS OR APPARATUS
    • G02B13/00—Optical objectives specially designed for the purposes specified below
    • G02B13/02—Telephoto objectives, i.e. systems of the type + - in which the distance from the front vertex to the image plane is less than the equivalent focal length
    • G—PHYSICS
    • G02—OPTICS
    • G02B—OPTICAL ELEMENTS, SYSTEMS OR APPARATUS
    • G02B7/00—Mountings, adjusting means, or light-tight connections, for optical elements
    • G02B7/02—Mountings, adjusting means, or light-tight connections, for optical elements for lenses
    • G02B7/021—Mountings, adjusting means, or light-tight connections, for optical elements for lenses for more than one lens

Definitions

  • This invention is about a special lens.
  • camera is an optical instrument for photography taking. This camera is broadly used for several fields such as press photo, industrial photo, architectural photo, microphotograph, Roentgen photo, aerial photo, astronomic photo and other medical or industrial field.
  • the lens in case of simple camera convex meniscus or plastic lens is used however most of the cases camera has more than 3 lenses and most of them are convex type. That is to make the figure of the object to be shown on needed range and brighten the lens which central and side parts has equal amount of brightness and hold the portrait straight which cannot produce satisfactory result only with one lens so that different types of optical lenses are combined.
  • Camera lens has iris to control amount of transmitted light and normally iris diaphragm which continuously can change diameter of iris is used.
  • Brightness of lens is . indicated in ratio between valid aperture and focal distance. Numbers such as 1 :2 or 1 :2.5 around the lens are the indications and this shows ration of focal distance when valid aperture is set on 1. For example when a lens is set on 1:1, valid aperture and focal distance of this lens is bright. Meaning to say, as ratio of focal distance against valid aperture is smaller the lens is brighter. •
  • lens attached to camera is standard lens which its focal distance is equal to diagonal distance of film screen. That is because under this condition, about photo is naturally taken on about 50 degrees angle.
  • Lens with more than 60 degrees snap angle is called wide-angle lens or pantoscope and lens which has longer focal distance and narrower square angle is called long focal point.
  • lens designed with distance between lens and focal point part shorter than focal distance is called telephoto lens and normally these are not separately categorized.
  • Lens has feature of when square angle is larger, the distance is drown more in detail (object closer to lens is larger and further is smaller) and the distance does not show as square angle gets narrower. It brings huge efficiency when difference of square angle and feature of distance is effectively used while changing lens.
  • Telephoto lens is a lens that has shorter focal distance and has less than 30 degrees square angle and lens with long focal distance is called long focal point lens in optical term. When distance from vertex of lens front to film is shorter than focal distance it is categorized as telephoto lens.
  • the ratio between lens length and focal distance is called tele-ratio and a 1 size smaller lens to this lens is telephoto lens.
  • This lens is produced to picture objective in long distance in larger image however it is popularized due to creation of Leica and diffusion of 35 mm 1-eye Reflex.
  • this lens is used in various purposes such as for natural description of portrait close up or for description of lost distance for narrow square angle lenses.
  • film-less digital camera is recently used a lot and this camera saves image to digital data and provides camera and scanner function. And to produce image using scanner, it must be taken by camera and print on photographic paper and scanned.
  • Digital camera is a medium substituting scanner and camera. Namely, with out recording the image on film, digital camera saves the image on storage medium and can input the image into personal computer not using scanner.
  • digital camera is designed in small size and so lenses installed to digital camera are small and zoom lens zooming the figure are formed in one whole body however telephoto lens used to picture object in longer distance is not produced yet. Therefore customers only satisfy with the zoom lens and has problem picturing objective in longer distance in higher detail.
  • connection ring 1 attached to zoom lens
  • holder connecting connection ring 1 and 2 to Korean Patent Office by 3 April 2002
  • the telephoto equipment of this camera was too huge and so had difficulty in portability, custody and usage.
  • this telephoto equipment cannot be used as separate telescope but only can be used attached to camera.
  • Objective of this invention is to present special lens which is convenient for custody, portability or usage due to its small size and can be easily detached or attached to zoom lens of camcorder or digital camera to be used as telephoto-lens.
  • This invention consists ocular lens body with ocular with lens 1 close to ocular lens 2, ocular lens 3 magnifying figure received from substance lens, lens 2 concentrating the figure to center, inner screw inside inner circle, hinge outside of out circle, operation ring which outer screw on out circle with slant line shaped hinge groove where hinge is fixed on outside of ocular lens body, connection screw part which it is connected and fixed on out circle of the hem with connection part on a side, support ring which reflection lens and inner pipe are fixed and safety cap preventing separation of inner body forming band shape rubber handle on outer surface of inner body.
  • Figure 1 is perspective view with hood attached in example of present invention
  • Figure 2 is separated perspective view of assembly of ocular lens and substance lens
  • Figure 3 is front-sectional view of present invention
  • Figure 4 is partially magnified flat-sectional view showing usage of operational example
  • Figure 5 is perspective view with hood removed in example of present invention
  • Figure 6 is perspective view of operational usage of hood of present invention.
  • connection Part 12 Connection Screw Part
  • This invention is designed to solve problems mentioned above and has purpose of providing telephoto lens easily attached and detached to digital camera or camcorder and provide convenience for portability, custody and usage with its small size.
  • this invention in digital camera or camcorder with screw part formed on lens part, ocular lens 3 magnifying the image received from objective lens, ocular lens 2 concentrating the image to the center in certain distance by distance control ring, operation ring where ocular lens 1 close to ocular lens 2 is formed in straight format and where inner screw is formed inside of inner circle with hinge fixed hinge groove on a part of out circle and where outer screw is formed on out circle, control body made of connection part formed on a side, connection screw part connected and fixed screw part of zoom lens of digital camera and camcorder, control body rotating operation ring connected to outer screw of operation ring, inner pipe with inner groove where hinge slides by operation ring on a side, support ring with fixed reflection lens and connected to inner circle inside inner pipe, objective lens body fixing the image to the ocular lens 1 with ocular lens 2 fixed by fixed pipe with outer screw on other side and with objective lens 1 connected by connection ring in certain distance from ocular lens 1,2 and 3, and outer body where protective cap preventing separation of inner
  • Ocular lens 1 is flat lens and ocular lens 2 has one flat side and one convex type and it has special feature that flat side of ocular lens 2 faces ocular lens 1.
  • Figure 1 is perspective view of invention with hood attached
  • figure 2 is separated perspective view of assembly of ocular lens and substance lens
  • figure 3 is front- sectional view of present invention
  • figure 4 is partially magnified flat-sectional view showing usage of operational example
  • figure 5 is perspective view with hood removed in example of present invention
  • figure 6 is perspective view of operational usage of hood of present invention.
  • Telephoto lens (1) attached or detached to digital camera and camcorder is connected to hem of zoom lens with connection screw part (12) to be used as telephoto lens, and consists ocular lens body (20) for focusing the image, operation ring (30) with hinge groove (31), connection screw part (12) fixed and connected to zoom lens of digital camera, control body (10) focusing by rotating operation ring (30), inner pipe (34) with inner groove (35), support ring (40) with reflection lens (41) fixed, objective lens body (60) with objective lens 1,2 (61, 63) and outers body (70) maintaining certain distance between reflection lens (41) and objective lens 1,2 (61, 63).
  • Control body (10) has connection part (11) on a hem, and on out circle it has connection screw part (12) connected to screw part (not shown on figure) of zoom lens hem of digital camera and camcorder.
  • This control body (10) rotates the operation ring (30) both to left and right direction connected to outer screw (32) of operation ring (30) which will be mentioned later.
  • pelvic region of ring (13) connected with several slide-proof rings (14) which strengthen rotation power (transmitted to control body by increasing friction force) is formed.
  • Ocular lens body (20) is made of ocular lens 3 (25) magnifying the image received from objective lens 1,2 (61, 63), ocular lens 2 (23) concentrating the image to center maintaining certain distance by ocular lens 3 (25) and distance control ring (24), outside ocular lens 1(22) connected to ocular lens 2 (23) on straight line on outside of inner circle, inner screw (26) inside inner circle and hinge (21) projected outside of a part of out circle.
  • Ocular lens 1 (22) mentioned above is a flat lens and ocular lens 2 (23) has one side flat and other side convex shape.
  • the flat side of ocular lens 2 (23) faces ocular lens 1 (22) and it is fixed on inner side of ocular lens (20).
  • the reason for this composition is to solve technical problem unable to combine those two lenses.
  • Operation ring (30) locates on outside of ocular lens body (23) and it is formed with hinge groove (31) fixed with hinge (21) of ocular lens body (20) and outer screw (32) on out circle.
  • Inner pipe (34) is located on inner side of control body and on its side, inner groove (35) which hinge (21) of ocular lens body (20) slides by operation ring (30) is formed in length direction.
  • Support ring (40) is connected to inner circle of inner pipe and reflection lens (41) is fixed and connected.
  • Objective lens 1, 2 (61, 63) is located on certain distance away from ocular lens 1,2 and 3 (22, 23, 25) and on its side objective 1 (61) is fixed by connection ring (62) and on the other side objective lens 2 (63) fixed by fixed pipe (64) containing outer screw (65) and concentrates image to ocular lens 1,2 3, (22, 23, 25) direction.
  • Outer body (70) is an aluminum die casting product and this consists out circle of inner pipe connected and fixed on a side, outer screw (65) of fixed pipe (64) in other side of hem, inner body (71) maintaining certain distance between reflection lens (41) and objective lens 1 (61, 63) and protective cap preventing separation of inner body (71) in other side of hem.
  • oviduct shape hood (80) is formed to prevent direction rays observed into objective lens 1, 2 (61, 63) direction and its hem; protective lens (81) is equipped. Also inside of protective cap (73), protective lens (not shown on picture) is formed to protect objective lens 2 (63) when the hood (80) is not attached.
  • camcorder through objective lens 1, 2 (61, 63) by attaching hold (80) to protective cap
  • Hood (80) is either attached or detached based on the weather and if the user wants to telephoto lens (1) to digital camera or camcorder, it can be attached to screw connection part (12) on control body (10) on zoom lens hem screw part of camera of camcorder.
  • operation body (10) of telephoto lens (1) is slowly rotated to clear the image on far distance and with shutter of digital or recording switch of camcorder pressed, the image will be saved.
  • control body (10) located on outer side of ocular lens 1, 2, 3 (22, 23, 25) either to clock wise or counter clock wise the image will be set clear before recording.
  • ocular lens body (20) that hinge is located on hinge groove of operation ring (30) inside control body (10) controls the focal distance as it slowly moves in inner groove (35) of inner pipe maintaining certain distance with ocular lens 1 (22) and ocular lens 2 (23) by gap control ring (24).
  • the lens can be detached by rotating control body (10) of telephoto lens on digital camera or camcorder hem from screw part of zoom lens.

Abstract

According to the present invention, since this telephoto lens attached or detached to digital camera or camcorder is small in size, custody, portability and usage is very convenient and it can be used to be connected to zoom lens of digital camera or camcorder. And it easily can be attached and detached. This invention does not only limit on operation examples but as long as main point claimed in categories exist, any change or development in technical field this invention belong can be made by any personnel with general knowledge.

Description

TELEPHOTO LENS
BACKGROUND OF THE INVENTION
Field of the Invention:
This invention is about a special lens.
And it refers to convenient for custody, portability or usage due to its small size and can be easily detached or attached to zoom lens of camcorder or digital camera to be used as telephoto-lens in detail.
Description of the Prior Art:
In general, camera is an optical instrument for photography taking. This camera is broadly used for several fields such as press photo, industrial photo, architectural photo, microphotograph, Roentgen photo, aerial photo, astronomic photo and other medical or industrial field.
For the most important part of camera, the lens, in case of simple camera convex meniscus or plastic lens is used however most of the cases camera has more than 3 lenses and most of them are convex type. That is to make the figure of the object to be shown on needed range and brighten the lens which central and side parts has equal amount of brightness and hold the portrait straight which cannot produce satisfactory result only with one lens so that different types of optical lenses are combined.
Camera lens has iris to control amount of transmitted light and normally iris diaphragm which continuously can change diameter of iris is used. Brightness of lens is . indicated in ratio between valid aperture and focal distance. Numbers such as 1 :2 or 1 :2.5 around the lens are the indications and this shows ration of focal distance when valid aperture is set on 1. For example when a lens is set on 1:1, valid aperture and focal distance of this lens is bright. Meaning to say, as ratio of focal distance against valid aperture is smaller the lens is brighter. •
Ordinarily, lens attached to camera is standard lens which its focal distance is equal to diagonal distance of film screen. That is because under this condition, about photo is naturally taken on about 50 degrees angle. Lens with more than 60 degrees snap angle is called wide-angle lens or pantoscope and lens which has longer focal distance and narrower square angle is called long focal point. And among theses lenses, lens designed with distance between lens and focal point part shorter than focal distance is called telephoto lens and normally these are not separately categorized.
Lens has feature of when square angle is larger, the distance is drown more in detail (object closer to lens is larger and further is smaller) and the distance does not show as square angle gets narrower. It brings huge efficiency when difference of square angle and feature of distance is effectively used while changing lens.
Telephoto lens is a lens that has shorter focal distance and has less than 30 degrees square angle and lens with long focal distance is called long focal point lens in optical term. When distance from vertex of lens front to film is shorter than focal distance it is categorized as telephoto lens.
The ratio between lens length and focal distance is called tele-ratio and a 1 size smaller lens to this lens is telephoto lens. This lens is produced to picture objective in long distance in larger image however it is popularized due to creation of Leica and diffusion of 35 mm 1-eye Reflex.
And not only for the initial purpose, this lens is used in various purposes such as for natural description of portrait close up or for description of lost distance for narrow square angle lenses. Among these cameras, film-less digital camera is recently used a lot and this camera saves image to digital data and provides camera and scanner function. And to produce image using scanner, it must be taken by camera and print on photographic paper and scanned. Digital camera is a medium substituting scanner and camera. Namely, with out recording the image on film, digital camera saves the image on storage medium and can input the image into personal computer not using scanner.
Ordinary camera records image in analogue format while digital camera separates the image into bitmap and record each brightness in digital format. With recent development image data of personal computer, edition of image is very convenient. Digital camera is designed as ordinary camera and it is also portable. Recorded image can be saved in inner memory installation (hard disk or memory card) and can send the snapped image through other computers.
For convenient portability, digital camera is designed in small size and so lenses installed to digital camera are small and zoom lens zooming the figure are formed in one whole body however telephoto lens used to picture object in longer distance is not produced yet. Therefore customers only satisfy with the zoom lens and has problem picturing objective in longer distance in higher detail.
For this purpose, the applicant applied patent no. 20-2001-39660 telephoto equipment (attachable and detachable to camera) consisting connection ring 1 attached to zoom lens, telescope formed to insure further sight, holder connecting connection ring 1 and 2 to Korean Patent Office by 3 April 2002 however the telephoto equipment of this camera was too huge and so had difficulty in portability, custody and usage.
And also, telephoto equipment has inconvenient problems of portability, custody or usage when attached to small digital camera.
And also, this telephoto equipment cannot be used as separate telescope but only can be used attached to camera.
SUMMARY OF THE INVENTION Objective of this invention is to present special lens which is convenient for custody, portability or usage due to its small size and can be easily detached or attached to zoom lens of camcorder or digital camera to be used as telephoto-lens.
This invention consists ocular lens body with ocular with lens 1 close to ocular lens 2, ocular lens 3 magnifying figure received from substance lens, lens 2 concentrating the figure to center, inner screw inside inner circle, hinge outside of out circle, operation ring which outer screw on out circle with slant line shaped hinge groove where hinge is fixed on outside of ocular lens body, connection screw part which it is connected and fixed on out circle of the hem with connection part on a side, support ring which reflection lens and inner pipe are fixed and safety cap preventing separation of inner body forming band shape rubber handle on outer surface of inner body.
BRIEF DESCRIPTION OF THE DRAWINGS
The aforementioned aspects and other features of the present invention will be explained in the following description, taken in conjunction with the accompanying drawings, wherein:
Figure 1 is perspective view with hood attached in example of present invention
Figure 2 is separated perspective view of assembly of ocular lens and substance lens
Figure 3 is front-sectional view of present invention
Figure 4 is partially magnified flat-sectional view showing usage of operational example
Figure 5 is perspective view with hood removed in example of present invention
Figure 6 is perspective view of operational usage of hood of present invention.
Description of Symbols on Main Figures
I : Telephoto Lens 10 : Control Body
I I : Connection Part 12 : Connection Screw Part
13 : Pelvic Region of Ring 14 : Slide Proof Ring 20 : Ocular Lens Body 21 : Hinge 22,23,25 : Ocular Lens 1,2,3 24 : Gap Control Ring 26 : Inner Screw 30 : Operation Ring 31 : Hinge Groove 32 : Outer Screw 34 : Inner Pipe 35 : Inner Groove 40 : Support Ring 41 : Reflection Lens 60 : Object Lens Body 61,63 : Object Lens 1,2 62 : Connection Ring 64 : Fixed Pipe 65 : Outer Screw 70 : Outer Body 71 : Inner Main Body 72 : Rubber Holder 73 : Protective Cap 80 : Hood 81 : Protective Lens
DETAILED DESCRIPTION OF PREFERRED EMBODIMENTS
This invention is designed to solve problems mentioned above and has purpose of providing telephoto lens easily attached and detached to digital camera or camcorder and provide convenience for portability, custody and usage with its small size.
To accomplish the objective mentioned above, this inventions, in digital camera or camcorder with screw part formed on lens part, ocular lens 3 magnifying the image received from objective lens, ocular lens 2 concentrating the image to the center in certain distance by distance control ring, operation ring where ocular lens 1 close to ocular lens 2 is formed in straight format and where inner screw is formed inside of inner circle with hinge fixed hinge groove on a part of out circle and where outer screw is formed on out circle, control body made of connection part formed on a side, connection screw part connected and fixed screw part of zoom lens of digital camera and camcorder, control body rotating operation ring connected to outer screw of operation ring, inner pipe with inner groove where hinge slides by operation ring on a side, support ring with fixed reflection lens and connected to inner circle inside inner pipe, objective lens body fixing the image to the ocular lens 1 with ocular lens 2 fixed by fixed pipe with outer screw on other side and with objective lens 1 connected by connection ring in certain distance from ocular lens 1,2 and 3, and outer body where protective cap preventing separation of inner body connected and where band shape rubber band on an outer side is formed and where outer screw of fixed pipe fixed and connected maintaining certain distance between reflection lens and objective lens 1,2. Out circle of control body mentioned above has pelvic region of ring where several slide proof rings intensifying rotation force transmitted to control body by strengthening friction power are connected.
In inner circle of protective cap mentioned above has additional oviduct shaped hood with protective lens preventing direct ray from the side to objective lens direction. Ocular lens 1 is flat lens and ocular lens 2 has one flat side and one convex type and it has special feature that flat side of ocular lens 2 faces ocular lens 1.
[Composition of Invention]
Explanation more in detail is described as followed based on figures. Figure 1 is perspective view of invention with hood attached, figure 2 is separated perspective view of assembly of ocular lens and substance lens, figure 3 is front- sectional view of present invention, figure 4 is partially magnified flat-sectional view showing usage of operational example, figure 5 is perspective view with hood removed in example of present invention and figure 6 is perspective view of operational usage of hood of present invention.
Telephoto lens (1) attached or detached to digital camera and camcorder is connected to hem of zoom lens with connection screw part (12) to be used as telephoto lens, and consists ocular lens body (20) for focusing the image, operation ring (30) with hinge groove (31), connection screw part (12) fixed and connected to zoom lens of digital camera, control body (10) focusing by rotating operation ring (30), inner pipe (34) with inner groove (35), support ring (40) with reflection lens (41) fixed, objective lens body (60) with objective lens 1,2 (61, 63) and outers body (70) maintaining certain distance between reflection lens (41) and objective lens 1,2 (61, 63). Control body (10) has connection part (11) on a hem, and on out circle it has connection screw part (12) connected to screw part (not shown on figure) of zoom lens hem of digital camera and camcorder. This control body (10) rotates the operation ring (30) both to left and right direction connected to outer screw (32) of operation ring (30) which will be mentioned later. On out circle of control body (10), pelvic region of ring (13) connected with several slide-proof rings (14) which strengthen rotation power (transmitted to control body by increasing friction force) is formed.
Ocular lens body (20) is made of ocular lens 3 (25) magnifying the image received from objective lens 1,2 (61, 63), ocular lens 2 (23) concentrating the image to center maintaining certain distance by ocular lens 3 (25) and distance control ring (24), outside ocular lens 1(22) connected to ocular lens 2 (23) on straight line on outside of inner circle, inner screw (26) inside inner circle and hinge (21) projected outside of a part of out circle.
Ocular lens 1 (22) mentioned above is a flat lens and ocular lens 2 (23) has one side flat and other side convex shape. The flat side of ocular lens 2 (23) faces ocular lens 1 (22) and it is fixed on inner side of ocular lens (20). The reason for this composition is to solve technical problem unable to combine those two lenses.
Operation ring (30) locates on outside of ocular lens body (23) and it is formed with hinge groove (31) fixed with hinge (21) of ocular lens body (20) and outer screw (32) on out circle.
Inner pipe (34) is located on inner side of control body and on its side, inner groove (35) which hinge (21) of ocular lens body (20) slides by operation ring (30) is formed in length direction. Support ring (40) is connected to inner circle of inner pipe and reflection lens (41) is fixed and connected.
Objective lens 1, 2 (61, 63) is located on certain distance away from ocular lens 1,2 and 3 (22, 23, 25) and on its side objective 1 (61) is fixed by connection ring (62) and on the other side objective lens 2 (63) fixed by fixed pipe (64) containing outer screw (65) and concentrates image to ocular lens 1,2 3, (22, 23, 25) direction.
Outer body (70) is an aluminum die casting product and this consists out circle of inner pipe connected and fixed on a side, outer screw (65) of fixed pipe (64) in other side of hem, inner body (71) maintaining certain distance between reflection lens (41) and objective lens 1 (61, 63) and protective cap preventing separation of inner body (71) in other side of hem.
On inner circle of protective cap (73), oviduct shape hood (80) is formed to prevent direction rays observed into objective lens 1, 2 (61, 63) direction and its hem; protective lens (81) is equipped. Also inside of protective cap (73), protective lens (not shown on picture) is formed to protect objective lens 2 (63) when the hood (80) is not attached.
Usage of present invention is described as followed.
First of all, as shown on figure 5, it can be used with hood (80) removed from
protective cap hem however by preventing side rays observed to digital camera or
camcorder through objective lens 1, 2 (61, 63) by attaching hold (80) to protective cap
(as shown on figure 1 and 3) on a day with strong sunshine, it can prevent unclearness of
image on ocular lens 1 (22).
Hood (80) is either attached or detached based on the weather and if the user wants to telephoto lens (1) to digital camera or camcorder, it can be attached to screw connection part (12) on control body (10) on zoom lens hem screw part of camera of camcorder.
In this position, looking at the objective (90) through finder, operation body (10) of telephoto lens (1) is slowly rotated to clear the image on far distance and with shutter of digital or recording switch of camcorder pressed, the image will be saved.
At this point, by rotating control body (10) located on outer side of ocular lens 1, 2, 3 (22, 23, 25) either to clock wise or counter clock wise, the image will be set clear before recording.
As the user rotates the control body (10) holding several slide proof rings (14) placed on pelvic region of ring either to left or right (13), the distance between ocular lens 1,2,3 (22, 23, 25) and objective lens 1, 2 (61, 63) becomes either far or close and so image on ocular lens 1 (22) becomes either impure or clear. At this point, ocular lens body (20) that hinge is located on hinge groove of operation ring (30) inside control body (10) controls the focal distance as it slowly moves in inner groove (35) of inner pipe maintaining certain distance with ocular lens 1 (22) and ocular lens 2 (23) by gap control ring (24).
In this condition, after using telephoto lens (1) attached to digital camera and camcorder, the lens can be detached by rotating control body (10) of telephoto lens on digital camera or camcorder hem from screw part of zoom lens.

Claims

WHAT IS CLAIMED IS:
1. For digital camera or camcorder which screw part is formed on zoom lens hem part; Telephoto lens consisting ocular lens 3 magnifying the image received from objective lens, ocular lens 2 concentrating the image to the center in certain distance by distance control ring, operation ring where ocular lens 1 close to ocular lens 2 is formed in straight format and where inner screw is formed inside of inner circle with hinge fixed hinge groove on a part of out circle and where outer screw is formed on out circle, control body made of connection part formed on a side, connection screw part connected and fixed screw part of zoom lens of digital camera and camcorder, control body rotating operation ring connected to outer screw of operation ring, inner pipe with inner groove where hinge slides by operation ring on a side, support ring with fixed reflection lens and connected to inner circle inside inner pipe, objective lens body fixing the image to the ocular lens 1 with ocular lens 2 fixed by fixed pipe with outer screw on other side and with objective lens 1 connected by connection ring in certain distance from ocular lens 1,2 and 3, and outer body where protective cap preventing separation of inner body connected and where band shape rubber band on an outer side is formed and where outer screw of fixed pipe fixed and connected maintaining certain distance between reflection lens and objective lens 1,2.
2. In claim 1;
Telephoto lens attached or detached to digital camera and camcorder with pelvic region of ring (13) consisting several slide proof rings (14) which strengthens rotating power transmitted to control body (10) by increasing friction power while rotation of control body (10),
3. In claim 1 ;
Telephoto lens attached or detached to digital camera and camcorder with oviduct shape hood (80) consisting protective lens (81) preventing direct rays observed into objective lens (61, 63) around protective cap (73).
4. In claim 1;
Telephoto lens attached or detached to digital camera and camcorder, which consists ocular lens 1 (flat lens, 22) and ocular lens 2 (one side flat & other side convex, 23) facing each others' flat surface.
5. In claim 1;
Telephoto lens attached or deatahced to digital camera that can be used as
magnification digital microscope when other magnification lens substitutes protective
lens (81) for attachable/detachable oviduct shape hood (80).
PCT/KR2003/000946 2003-02-27 2003-05-14 Telephoto lens WO2004092800A1 (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
AU2003230339A AU2003230339A1 (en) 2003-02-27 2003-05-14 Telephoto lens

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
KR10-2003-0012217A KR100512766B1 (en) 2003-02-27 2003-02-27 telephoto lens combination-separating digital camera and camcorder
KR10-2003-0012217 2003-02-27

Publications (1)

Publication Number Publication Date
WO2004092800A1 true WO2004092800A1 (en) 2004-10-28

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Family Applications (1)

Application Number Title Priority Date Filing Date
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Country Status (3)

Country Link
KR (1) KR100512766B1 (en)
AU (1) AU2003230339A1 (en)
WO (1) WO2004092800A1 (en)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN102495459A (en) * 2011-12-31 2012-06-13 广州博冠企业有限公司 Long focal length lens with combination of photography and visual telescope

Families Citing this family (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
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