|Publication number||US20060010762 A1|
|Application number||US 11/152,205|
|Publication date||Jan 19, 2006|
|Filing date||Jun 15, 2005|
|Priority date||Jun 17, 2004|
|Publication number||11152205, 152205, US 2006/0010762 A1, US 2006/010762 A1, US 20060010762 A1, US 20060010762A1, US 2006010762 A1, US 2006010762A1, US-A1-20060010762, US-A1-2006010762, US2006/0010762A1, US2006/010762A1, US20060010762 A1, US20060010762A1, US2006010762 A1, US2006010762A1|
|Inventors||Chen-Yeh Lin, Shang-Yung Liang|
|Original Assignee||Asia Optical Co., Inc.|
|Export Citation||BiBTeX, EndNote, RefMan|
|Patent Citations (19), Referenced by (9), Classifications (4), Legal Events (1)|
|External Links: USPTO, USPTO Assignment, Espacenet|
1. Field of the Invention
The present invention relates to an optical sight and assembly method for the same, and more specifically, to a telescopic optical sight capable of rangefinding and assembly method for the same.
2. The Related Art
In general, an optical system of conventional telescopic sight comprises an objective lens assembly, an erector lens assembly, an eyepiece lens assembly and a scale board with a reticle. The scale board is marked with a rough rangefinding scale. A shooter can rapidly estimate the range to a target by referring to the rangefinding scale. Therefore, such conventional telescopic sight may be used as a simple rangefinder.
However, the range estimation of conventional telescopic sight is mostly depended on the user's experience that may likely bring a larger tolerance. Accordingly, a telescopic sight progressively takes the precise shooting and rangefinding fields. A conventional telescopic sight has been disclosed in U.S. Pat. No. 5,771,623 issued on Jun. 30, 1998. The conventional telescopic sight mainly comprises an objective lens assembly, a laser transmitter (like a laser diode, LD), a laser receiver (like an avalanche photoelectric diode, APD), a range indicator (like a light emitting diode, LED) and three sets of prisms, erector lens unit and eyepiece lens unit which are provided with a dichroic coating. The laser transmitter and the laser receiver both constitute a rangefinder of the telescopic sight. The laser rangefinder operates on a principle of measuring a travel period from emission of a laser pulse or laser pulse sequence by the laser transmitter, via pulse reflection with a target aimed at, to a reflected pulse reception by the laser receiver. One half of the value that this travel period is multiplied by the light speed constant yields the distance between the rangefinder and target. The distance calculation is performed by a calculation device or program disposed within the telescopic sight.
Generally, several components adapted for conventional telescopic sight, like the objective lens unit, erector lens unit, rangefinding device and eyepiece lens unit, are modularized, individually, and each one is assembled and adjusted respectively into a barrel and then adjusted again after assembled. As the conventional telescopic sight disclosed in U.S. Pat. No. 5,771,623, the erector lens unit thereof is firstly assembled generally, and then fixed on a fabrication fixture for adjusting a position of a reticle to reach a first image plane. Thereafter, the erector lens unit is mounted within a laser rangefinding unit, and the photoelectric rangefinding functions provided with coordination among the laser transmitter, laser receiver and range indicator are adjusted. The complete-adjusted laser rangefinding unit, the objective lens unit, an adjusting mechanism and a power supply unit are disposed into the barrel, respectively. The parallax of the objective lens unit is adjusted after assembled. Meanwhile, if any lens or the reticle becomes contaminated or slanted, each component should be detached from the barrel for adjusting each component before assembled again. Eventually, the eyepiece lens unit can be assembled with the barrel for accomplishing the assembly of the telescopic sight. A quality control procedure, including an optical performance inspection, a photoelectric rangefinding performance inspection, an impact strength inspection and an air-sealing inspection etc., is processed for the finished telescopic sight. If there is any performance varied within the need of re-adjusting, as aforementioned that any lens or the reticle becomes contaminated or slanted, each component should be detached from the barrel and then adjusted before assembled again. Obviously, each step in the assembly of the conventional telescopic sight, i.e. adjusting and assembling, must be repeated if there is any misstep appearing in the assembly. Understandingly, the assembly procedure of the conventional telescopic sight is more complicated and unfavorable to both the cost and manufacturing.
For above reasons, it is necessary to provide an optical sight and an assembly method thereof for simplifying the assembly procedure and improving the productibility.
An object of the present invention is to provide an optical sight with rangefinder capable of easily facilitating adjustment during assembling and the quality assurance procedure after assembled by way of simplifying the assembly procedure and improving the productibility thereof.
Another object of the present invention is to provide an assembly method of an optical sight with rangefinder capable of facilitating adjustment and the quality assurance procedure after assembled for reducing re-assembled procedures and improving the productibility thereof.
According above objects of the present invention, there is provided an optical sight with rangefinder comprising an erector lens unit, a photoelectric rangefinding unit, a barrel, an objective lens unit, a plurality of adjusting elements, a power supply unit and an eyepiece lens unit disposed on the barrel. The photoelectric rangefinding unit includes a laser emitter, a laser receiver and a range indicator. The photoelectric rangefinding unit is formed with a tunnel inside passed through therein for containing the erector lens unit. The barrel is a hollow barrel which is formed with a cavity passed through therein axially for containing the erector lens unit. A plurality of openings are formed on sidewall of the barrel corresponding to the positions of the laser emitter, laser receiver and range indicator for conducting the cavity to outside the barrel. The objective lens unit is disposed on one end of the barrel and the eyepiece lens unit is disposed on the other end of the barrel. The adjusting elements are disposed on the barrel corresponding the positions connected with the objective lens unit for adjusting the status of the objective lens unit.
The assembly method of the optical sight in accordance with the present invention comprises the steps below:
In contrast to the prior art, the optical sight according to the present invention comprises the openings disposed on sidewall of the barrel corresponding to the positions of the laser emitter, laser receiver and the range indicator for easily facilitating the adjustment of each element. The optical sight according to the present invention is capable of preventing unnecessary disassemblies and re-assemblies for saving the total assembled time and reducing the number of defective products and the cost of production. The assembly method of the optical sight according to the present invention can be adjusted after all elements are assembled. The assembly method of the optical sight according to the present invention can be used to reduce the adjusting times and prevent unnecessary disassemblies and re-assemblies for simplifying the assembly process and improving the yield rate and the productibility of the laser sight.
The present invention will be apparent to those skilled in the art by reading the following description of preferred embodiments thereof, with reference to the attached drawings, in which:
The present invention will now be described more specifically with reference to the following embodiments. It is to be noted that the following description of the preferred embodiments of the present invention are presented herein for purpose of illustration and description only and it is not intended to be exhaustive or to be limited to the precise form disclosed.
With reference to
Please refer to
Please refer to
Please referring to
Following the above description, in step 4, the reticle is positioned at the image plane of the objective lens unit 4 or the image plane of the erector lens unit 1 (i.e. a first focus plane which the focus of the objective lens located in and a second focus plane which the focus of the erector lens unit located in). Generally speaking, the requirement of the parallax performance of the optical sight is that there is no parallax at 100 yards, and the requirement of the POI performance is 1 MOA (minute of angle), i.e. only a tolerance which below one inch can be allowed between the high magnification image and low magnification image at 100 yards. The adjustment of the photoelectric rangefinding performance is mostly implemented by adjusting the positions of the focus of the laser emitter 21 and laser receiver 22 and the range which the range indicator indicates. As shown in
As a result of that the opening 33, 32, 34 are disposed on sidewalls of the barrel 3 corresponding to the position of the laser emitter 21, laser receiver 22 and the range indicator 23, the adjustment of each element can be simplified to prevent unnecessary disassemblies and re-assemblies for saving the total assembled time and reducing the number of defective products and the cost of production. The assembly method of the optical sight according to the present invention can be adjusted after all elements are assembled. The assembly method of the optical sight according to the present invention can be used to reduce the adjusting times and prevent unnecessary disassemblies and re-assemblies for simplifying the assembly process and improving the yield rate and the productibility of the laser sight.
While the invention has been described in terms of what are presently considered to be the most practical and preferred embodiments, it is to be understood that the invention need not be limited to the disclosed embodiment. On the contrary, it is intended to cover various modifications and similar arrangements included within the spirit and scope of the appended claims, which are to be accorded with the broadest interpretation so as to encompass all such modifications and similar structures.
|Cited Patent||Filing date||Publication date||Applicant||Title|
|US3464770 *||Oct 21, 1965||Sep 2, 1969||Leitz Ernst Gmbh||Combined sighting mechanism and laser range finder|
|US3817621 *||Apr 19, 1973||Jun 18, 1974||C Kester||Range finder|
|US3845276 *||Dec 17, 1971||Oct 29, 1974||Hughes Aircraft Co||Laser-sight and computer for anti-aircraft gun fire control system|
|US4561204 *||Jul 6, 1983||Dec 31, 1985||Binion W Sidney||Reticle display for small arms|
|US4658139 *||Feb 4, 1985||Apr 14, 1987||Baird Corporation||Night vision reflex sight|
|US5388005 *||Nov 24, 1992||Feb 7, 1995||Wilson; Steven W.||Electrically-adjustable variable power rifle telescope|
|US5771623 *||Oct 31, 1995||Jun 30, 1998||Swarovski Optik Kg||Telescopic sight|
|US5892617 *||Jul 28, 1997||Apr 6, 1999||Wallace; Robert E.||Multi-function day/night observation, ranging, and sighting device and method of its operation|
|US5903996 *||Aug 1, 1997||May 18, 1999||Morley; Roland M.||Day/night viewing device with laser range finder utilizing two wavelengths of laser light, and method of its operation|
|US5907150 *||Jul 28, 1997||May 25, 1999||Saldana; Michael R.||Multi-function day/night observation, ranging, and sighting device and method of its operation|
|US5973315 *||Feb 18, 1998||Oct 26, 1999||Litton Systems, Inc.||Multi-functional day/night observation, ranging, and sighting device with active optical target acquisition and method of its operation|
|US6094304 *||Jul 28, 1997||Jul 25, 2000||Litton Systems, Inc.||Multi-function day/night observation, ranging, and sighting device and method of its operation|
|US6111692 *||Jul 28, 1997||Aug 29, 2000||Litton Systems, Inc.||Multi-function day/night observation, ranging, and sighting device and method of its operation|
|US6269581 *||Apr 12, 1999||Aug 7, 2001||John Groh||Range compensating rifle scope|
|US6295754 *||Oct 21, 1999||Oct 2, 2001||Rodney H. Otteman||Aiming Device with adjustable height mount and auxiliary equipment mounting features|
|US6583862 *||May 17, 2000||Jun 24, 2003||Andreas Perger||Combined telescope and telemeter device|
|US7350329 *||Apr 29, 2005||Apr 1, 2008||John Curtis Bell||Scope adjustment method and apparatus|
|US20010045046 *||Jul 27, 2001||Nov 29, 2001||Leupold & Stevens, Inc.||Adjustable height mount for rifle aiming device|
|US20050268521 *||Jun 7, 2004||Dec 8, 2005||Raytheon Company||Electronic sight for firearm, and method of operating same|
|Citing Patent||Filing date||Publication date||Applicant||Title|
|US8046951||Jan 29, 2010||Nov 1, 2011||Leupold & Stevens, Inc.||Rangefinders and aiming methods using projectile grouping|
|US8286384||Jun 27, 2008||Oct 16, 2012||Leupold & Stevens, Inc.||Ballistic range compensation for projectile weapon aiming based on ammunition classification|
|US8336776||May 20, 2011||Dec 25, 2012||Trijicon, Inc.||Aiming system for weapon|
|US8408460 *||Jun 3, 2010||Apr 2, 2013||United States Of America As Represented By The Secretary Of The Navy||Auto adjusting ranging device|
|US8448372||Nov 1, 2011||May 28, 2013||Leupold & Stevens, Inc.||Rangefinders for inclined shooting of projectile weapons|
|US8599482||Aug 31, 2010||Dec 3, 2013||Armin Schlierbach||Telescopic sight|
|US8959823||May 27, 2013||Feb 24, 2015||Leupold & Stevens, Inc.||Ranging methods for inclined shooting of projectile weapons|
|US20110297744 *||Dec 8, 2011||John Felix Schneider||Auto adjusting ranging device|
|DE102009039851A1 *||Sep 3, 2009||May 12, 2011||Carl Zeiss Sports Optics Gmbh||Zielfernrohr|
|Jun 15, 2005||AS||Assignment|
Owner name: ASIA OPTICAL CO., INC., TAIWAN
Free format text: ASSIGNMENT OF ASSIGNORS INTEREST;ASSIGNORS:LIN, CHEN-YEH;LIANG, SHANG-YUNG;REEL/FRAME:016701/0979
Effective date: 20050601