Search Images Maps Play YouTube News Gmail Drive More »
Sign in
Screen reader users: click this link for accessible mode. Accessible mode has the same essential features but works better with your reader.

Patents

  1. Advanced Patent Search
Publication numberUS2057412 A
Publication typeGrant
Publication dateOct 13, 1936
Filing dateDec 15, 1934
Priority dateDec 15, 1934
Publication numberUS 2057412 A, US 2057412A, US-A-2057412, US2057412 A, US2057412A
InventorsBoyd Arthur L
Original AssigneeBoyd Arthur L
Export CitationBiBTeX, EndNote, RefMan
External Links: USPTO, USPTO Assignment, Espacenet
Apparatus for eye testing
US 2057412 A
Abstract  available in
Images(1)
Previous page
Next page
Claims  available in
Description  (OCR text may contain errors)

Oct. 13, 1936. A. l.. BOYD 2,057,412

- APPARATUS FOR EYE TEsf'JJINGv Filed Dec. 15, 1954 TEST TYPES.

l 15 .../14 mi K l Patented oci. 13, 1936 UNITED `STATES PATENT OFFICE y 2,057,412 Y Y APPARATUS FOR. TESTING Arthur L. Boyd, Brockton, Mass. f vApplication December V15, 1,934, SerialNo. 757,677

` iolailn (c1. fas-#20) My present invention is a novel and improved. method of and apparatus for facilitating certain Well-known and standard methods of eye testing, andistparticularly directed to improve and Fig, 5` is a fragmentary cross-sectional View y showing a modified form of the illuminating feature.

As shown in the. drawing,'I prepare a card perfect such devices and methods, as well also printed with a suitable series of test types 2, 3, 4, 5 to combine in one card or device both the usual 5, 6, and 'I designating diagrammatically all varytest types and devices `for effecting the phoria ing grades and types. At any suitable place in test, the card I, I supply the scale I for the phoria Heretofore it has been necessary for separate test withacentral recess I2, through which alight and distinct operations to be carried out, with may shine. Also, on the card lll Iprefer to supply 10 separate apparatus for Optometrists to test a a metallic reinforcement I4 bent about the lower patients eyesight with test types of varying end of the card I and fixed centrally thereto to grades and distances, and then to have a separate receive and hold a spring clip I5 of the pocket phoria test for concentration of the patients flashlight holder I6. Attached to the upper part eyesight. of the holder I6 is a spring clip I8 having an 15 By my present invention, I prepare a 'card with angularly positioned reflecting member 20 on the the usual test types thereon and associated inner side of which is a reflecting plate or surtherewith, preferably centrally of the card,I proface 2|. This may be secured in any suitable vide a standard scale to cooperate with a lightto manner and, preferably, is a chromium plate zinc eifect the phoria test. sheet secured to the inner surface of the angu- 20 Furthermore, I utilize a simple pocket flashlarly positioned portion 20 by a series of side light holder, with proper reecting means, and clips 22, stamped out of the side wings 23 of the means to attach the same to the test type card in reflecting holder portion 20. The pocket flashproper alignment so that the entire apparatus light I6, holder 20, and reflector 2| are suitably can be instantly assembled, ready for use, and Vproportioned relatively with the opening I2 25 with a minimum of expense. through the test card I, so that the reflector 2U Furthermore, my invention enables the printed will be in alignment with the opening I2 when cards prepared for both the combined test type the holder I6 is attached to the card by the clip I5 y and phoria test to be supplied and shipped at engagingthe plate I4 at the bottom of the card I.

considerable distance at a,V minimum of expense. In order to hold the card I and flashlight holder 30 The operator can purchase a, supply ofthe hand I6 in correct alignment and insure reflection flashlights and can renew the batteries therefor from the light 25 through the opening I2, I prorOm time t0 time, 3S desired, at any ten cent vide on the back of the holder 2B a pair of clips store throughout the country. 26, 26 through which a pin 3|] is secured and force Heretofora expensive apparatus has been necthe pin through the card I directly above the 35 essary to perform the phoria test and this ex- Yopening I2, as clearly shown in Figs. 1, 2, and 3. pense, cumbersomeness, and space required have This insures correct alignment of the holder and rendered it extremely limited in use and diicult card during use. fOr the aVerage OptOmetriSt. 0r those practicing While I find it advantageous and convenient in small towns, to have the advantage of same, to provide the attachment comprising the spring 40 Whereas my device, being simple, compact, and clip I8 and the holder 20 positioned at 45 relaeffective, and manufactured at a nominal cost, is tively with the holder I6 and card I to produce capable 0f universel use. thus greatly increasing the reflection from the light 25 through the openthe advantages 0f the phoria test in describing ing I2, I may also provide a small recess 3| corrective lenses for the patient needing the same. through the sides of the holder I6 in a position 45 Referring to the drawing showing preferred to permit the light from the lamp 25 to shine embodiments of my invention, directly therethrough and to have the same pro- Fig. 1 is a plan view of my 'combined card for portioned with the opening I2 so that the opening test types and phoria test with the portable 2| will register with the opening I2 in the card I. flashlight attached thereto; This would eliminate the necessity of the attach- 50 Fig. 2 is a side view of the same; ing clip I8 and reflector 2|.

Fig. 3 is an enlarged view of the reflecting at- This modication simplies the construction tachment which I apply to the ilashlight and with but necessitates a special opening 3| to be formed the aligning and attaching means; in the sides of the holder I6. In either form, the

Fig. 4 is a cross-sectional View, and 55 resultant effect and advantage is the same, and

various other modications will readily occur to those skilled in the art, and which modications are Within the scope of my present invention.

In using the apparatus it is customary to carry a set or number of the testing charts, which may be readily contained in an envelope in the pocket of the optician, with one or more of the flashlight elements I6 also being carried in the pocket, being held in the pocket by clip I5, and ready for instant use, The chart and member I6 are Instantly assembled by fitting the same in position and in proper alignment with the pin 30 so that the reflector 2l Will register with the opening I2, whereupon the phoria test is performed.

This consists in rst using a red colored lens, which Will thereupon show the exphoria or essophoria, at either right o-r left, respectively, of the center opening, and the same may be measured on the scale I0 in alignment with the opening I2. Thereupon a displacement prism is 4utilized, which will show the same result only above or below the opening I2, no scale being necessary in the latter instance. Due corrections in accordance therewith are thereupon made.

ladapted to penetrate and hold a test chart with an aperture therein for phoria tests, a holder on the flashlight near the end opposite to said lamp and positioned to hold the test card with the opening therethrough in alinement with the reflector and with said pin penetrating said card above said opening, both holder and pin providing detachable means for connecting the card and flashlight in a proper alinement.

ARTHUR L. BOYD.

Referenced by
Citing PatentFiling datePublication dateApplicantTitle
US4004132 *Oct 21, 1974Jan 18, 1977Marvin Glass & AssociatesConvertible flashlight-lantern
Classifications
U.S. Classification351/243, 351/244, 362/99
International ClassificationA61B3/00
Cooperative ClassificationA61B3/0008
European ClassificationA61B3/00B