CN102411218B - Optical visual aid - Google Patents
Optical visual aid Download PDFInfo
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- CN102411218B CN102411218B CN 201110367586 CN201110367586A CN102411218B CN 102411218 B CN102411218 B CN 102411218B CN 201110367586 CN201110367586 CN 201110367586 CN 201110367586 A CN201110367586 A CN 201110367586A CN 102411218 B CN102411218 B CN 102411218B
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- object lens
- visual aid
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Abstract
The invention provides an optical visual aid, which comprises an objective (1), an ocular (2) and a triple prism group (3); the objective (1), the ocular (2) and the triple prism group (3) are sequentially arranged; the triple prism group (3) comprises a first triple prism and a second triple prism, and the thickness of the first triple prism and the thickness of the second triple prism are gradually reduced; and the first triple prism and the second triple prism are mutually superposed in the thickness direction and can mutually rotate. Through the optical visual aid, the propagation direction of rays of different degrees is changed to a random angle of 0 to 360 degrees for deflection focusing, and the deflecting degree of the rays is accurately adjusted as required, so that the residual vision is fully utilized, the visual function of a patient is furthest improved and the optical visual aid is suitable for users of different refractive states; and the optical visual aid is easy and convenient to operate and use.
Description
Technical field
The present invention relates to a kind of optical visual aid.
Background technology
Optical visual aid in the past owes accurate to the location of remaining eyesight.Optical visual aid in the past is many to carry out remaining eyesight location in conjunction with the prismatic lens in the conventional lenses case, but this prismatic lens is the single number of degrees, need during use repeatedly to change, and peak power only is 10 △, still can not satisfy the needs of peripheral nethike embrane location, and the light deflection focus direction of traditional Reisley axicon is single, and only the horizontal and vertical direction can not 360 ° of scopes change.The fine-focused requirement of the remaining eyesight of retina can not be satisfied, namely remaining eyesight improving visual function can not be well utilized.In addition, Galileo optical visual aid enlargement ratio commonly used also is single, can not carry out as required the selection of enlargement ratio.
Summary of the invention
Technical matters to be solved by this invention provides a kind of optical visual aid that improves the visual function of low vision patients by taking full advantage of remaining eyesight.
To this, the invention provides a kind of optical visual aid, comprising: object lens, eyepiece and prism group; Described object lens and described eyepiece and prism group are arranged in order, and described prism group comprises: thickness is by thick the first prism to thin gradual change and the second prism; Described the first prism and described the second prism are superimposed with each other at thickness direction and also can mutually rotate.
Adopt technique scheme, by the superimposed of two prisms so that the maximum number of degrees of typoscope are increased to the twice of a prism, so that the peak power of optical visual aid is enough and satisfy the needs of peripheral nethike embrane location.Because the size of prism group system strength has determined the degree of light deflection, and can change prism group system strength by the mutual rotation of two prisms, namely change the number of degrees of prism group, so, the mutual rotation of two prisms causes the adjusting of the number of degrees of prism group, realize light deflection in various degree, and then reach the purpose that focuses on the remaining normal nethike embrane district of periphery and excite remaining eyesight.
Preferably, described the first prism and the second prism can be take optical centre as the axle center simultaneously respectively to clockwise direction and counterclockwise equivalent rotation.
Preferably, described the first prism is the same with the number of degrees of the second prism.
Preferably, described prism group has physical construction, comprises outer ring rotating disk and inner lane part; Described inner lane part is connected with the outer ring rotating disk and can mutually rotates, and described inner lane partly comprises: inner lane index dial, number of degrees regulation and control wheel, the first prism, the second prism and arrow; Described number of degrees regulation and control wheel and described inner lane index dial are connected as a single entity and link to each other with arrow with the first prism, the second prism respectively afterwards.
Preferably, described outer ring rotating disk indicates 0 degree of expression rotation start bit to 360 degree sense of rotation scales.
Wherein, rotate start bit and refer on the vertical direction, the first prism is opposite each other with the end of the second prism, and this moment, the number of degrees of making a concerted effort of prism group were zero.
Preferably, identifying the scale that reacts the prism combining ability number of degrees on the described inner lane index dial, 0 zone bit in its scale the scale of corresponding outer ring rotating disk represent to rotate the direction of start bit.
The present invention further adopts above-mentioned technical characterictic, its advantage is, number of degrees regulation and control are taken turns so that the first prism and the second prism rotate to clockwise direction and counter clockwise direction equivalent respectively simultaneously by rotating, arrow points to the corresponding number of degrees on the inner lane index dial simultaneously, reach the effect of regulating the number of degrees, realized the accuracy controlling of prism strength.Rotation outer ring rotating disk or inner lane part, the outer ring scale is fixed, and can only rotate the inner lane part, thereby changes the direction of rotation start bit.Because the perpendicular direction of the direction of rotation start bit and light process prism group deflection focusing, so, rotate the outer ring rotating disk so that the rotation start bit also changes among 360 degree from 0 degree in the direction of 0 degree to the same seasonal light focusing of 360 degree variations.Advantage is as required Deflection of light focus direction and 0 degree to be changed arbitrarily between 360 degree, and by regulating number of degrees realization light deflection in various degree, thereby can carry out at amphiblestroid different parts the accurate location of remaining eyesight, be conducive to the at utmost improvement of low vision patients visual function.
Preferably, described object lens select the number of degrees to be+object lens of 2.5DS.
Preferably, described object lens select the number of degrees to be+object lens of 5.0DS.
The present invention further adopts above-mentioned technical characterictic, and its advantage is, has realized the conversion of different enlargement ratios by the object lens of selecting two different number of degrees.
Preferably, the distance between described object lens and the described eyepiece can increase or reduce.
The present invention further adopts above-mentioned technical characterictic, and its advantage is, realizes that by regulating length adjustment trickle between object lens and the eyepiece fine setting of different length realizes the conversion of different enlargement ratios, thereby adapts to the user of different refractive status.
Compared with prior art, its advantage is, the present invention realizes that the direction of propagation with in various degree light changes to 0 degree and carries out deflection focusing to the unspecified angle in 360 degree, the number of degrees of light deflection are accurately regulated as required, thereby take full advantage of remaining eyesight, farthest improve patient's visual function and adapt to the user of different refractive status, and simple to operate, convenient and easy-to-use.
Description of drawings
Fig. 1 is the optical schematic diagram of a kind of embodiment of optical visual aid of the present invention;
Fig. 2 is the overall appearance pictorial diagram of the prism group among the another kind of embodiment of optical visual aid of the present invention;
Fig. 3 is the number of degrees regulation and control design concept pictorial diagram of the prism group among the another kind of embodiment of optical visual aid of the present invention;
Fig. 4 is the direction regulation device outside drawing of the rotation start bit of the prism group among the another kind of embodiment of optical visual aid of the present invention;
Fig. 5 is the adjustable optical tube length of the another kind of embodiment of optical visual aid of the present invention.
Embodiment
Below in conjunction with accompanying drawing, more excellent embodiment of the present invention is described in further detail:
Such as Fig. 1, a kind of optical visual aid comprises: object lens 1, eyepiece 2 and prism group 3; Described object lens 1 are arranged in order with described eyepiece 2 and prism group 3, and described prism group 3 comprises: thickness is by thick the first prism to thin gradual change and the second prism; Described the first prism and described the second prism are superimposed with each other at thickness direction and also can mutually rotate.
Such as Fig. 2, axicon number of degrees regulation and control part is the inner lane part of this axicon device among the design, comprising: prismatic glasses, inner lane scale and corresponding line thereof, number of degrees regulation and control runner, arrow." 0 " is the rotation start bit shown in Fig. 2, and namely the prism vertical direction of two identical number of degrees (10 △) and end opposite direction is superimposed together.
The inner lane scale is make a concerted effort sign scale 0 △---20 △ of the number of degrees of axicon system.Axicon number of degrees regulation and control runner, each place of level and vertical four orientation (0o, 90o, 180o, 270o), opposite spin when wherein any one regulation and control runner all can be realized two prisms by rotation, thus reach certain making a concerted effort.This design can remedy the deficiency that traditional axicon number of degrees regulation and control knob can't operate at nasal side, because when any one regulation and control runner forwards nasal side to, its 180 rightabout another regulation and control runner must in the temporo side, therefore guarantee simple, convenient, the practicality of whole operating process.Arrow is number of degrees sign, and indication is the accurate number of degrees that prism system is made a concerted effort, thus accuracy controlling Deflection of light degree; And the auxiliary judgment end direction of making a concerted effort.The regulation and control of the axicon system the number of degrees mainly and end simultaneously reverse (suitable/counterclockwise) equivalent rotation overlapping by the prism of opposite direction of the equal end of two number of degrees realize.Principle should " simultaneously oppositely equivalent rotation " be to realize by the gear drive between two prisms, and guarantee simultaneously that the optical centre of two prismatic glasseses maintained static as shown in Figure 3.Inner lane part (prismatic glasses, inner lane scale and corresponding line thereof, number of degrees regulation and control runner, arrow) is done as a wholely can carry out 360 ° of rotations with respect to the outer ring part, thereby 360 ° of accurately rotations can be carried out in so that rotation start bit---" 0 " position, and then realized make a concerted effort 360 ° of the direction accurately regulation and control (because the end of making a concerted effort is all the time perpendicular to the rotation start bit---" 0 " position) at the end of axicon system, therefore can carry out 360 ° of accurate deflections regulation and control (because light is to the direction deflection focusing at the end) to the light focusing direction as required.
The determination methods of the direction at the end that the axicon system makes a concerted effort:
The direction at the end of making a concerted effort and rotation start bit---" 0 " position is vertical, and the while is in conjunction with the indication of arrow: with the number of degrees of arrow homonymy be the direction place at the end, thereby the direction at the judgement end.Such as Fig. 4, the rotation start bit---" 0 " position is positioned at 60 °, and the direction at the end of then making a concerted effort is 150 ° or 330 ° and since arrow with 330 ° the rotation start bit---the homonymy of " 0 ", therefore the end direction of making a concerted effort is 330 °, namely light can be partial to 330 ° of directions.
The effect of Novel rotary prism system in typoscope:
Light by prism can change its direction of propagation---the direction deflection at the bottom of the prism, so accurately regulate and control the accurate deflection that the direction at the end can realize the light focusing direction; Simultaneously, the adjustable prism number of degrees can be realized the regulation and control of light deflection degree.This is extremely important for hanging down clinically taking full advantage of of the remaining eyesight of vision patients, can be according to the position of the normal nethike embrane of remnants, regulation and control by yawing moment and degree, accurately change the focal position of light, guarantee that light focusing is on normal nethike embrane, thereby take full advantage of patient's remaining eyesight, improve its visual function.
Optical visual aid in the past is many to carry out remaining eyesight location in conjunction with the prismatic lens in the conventional lenses case, but this prismatic lens is the single number of degrees, need during use repeatedly to change, and peak power only is 10 △, still can not satisfy the needs of peripheral nethike embrane location, and the light deflection focus direction of traditional Reisley axicon is single, horizontal and vertical direction only, can not 360 ° of scopes change, this product combines the axicon of new design, can carry out as required the accurate regulation and control of the number of degrees and direction, thereby take full advantage of remaining eyesight, farthest improved patient's visual function, and simple to operate, convenient, practical.
Enlargement ratio equals the eyepiece number of degrees divided by the object lens number of degrees, so under the eyepiece size was constant, the less enlargement ratio of the object lens number of degrees was larger.
Object lens by changing different sizes (+2.50DS/+5.00DS), can realize different enlargement ratio (4 */2 *).
As shown in Figure 5, adjust the length of lens barrel by the rotation engage thread.Two scale markers are arranged on the screw thread, and representing respectively optical tube length is 5cm and 7.5cm, and to cooperate respectively 2 * and 4 * magnification, this mark is convenient to the user and is carried out the optical tube length adjustment.Effect is the demand that satisfies different enlargement ratios; In addition, can realize that by trickle length adjustment in various degree fine setting is to adapt to the user of different refractive status.
Above content is in conjunction with concrete preferred implementation further description made for the present invention, can not assert that implementation of the present invention is confined to these explanations.For the general technical staff of the technical field of the invention, without departing from the inventive concept of the premise, can also make some simple deduction or replace, all should be considered as belonging to protection scope of the present invention.
Claims (4)
1. an optical visual aid is characterized in that, comprising: object lens (1), eyepiece (2) and prism group (3); Described object lens (1) are arranged in order with described eyepiece (2) and prism group (3), and described prism group (3) comprising: thickness is by thick the first prism to thin gradual change and the second prism; Described the first prism and described the second prism are superimposed with each other at thickness direction and also can mutually rotate, wherein, described the first prism and the second prism can be take optical centre simultaneously respectively retrograde rotations as the axle center, described the first prism is identical with the optics number of degrees of the second prism, described prism group (3) has physical construction, and described prism group (3) comprises outer ring rotating disk and inner lane part; Described inner lane part is connected with the outer ring rotating disk and can mutually rotates, and described inner lane partly comprises: inner lane index dial, number of degrees regulation and control wheel, the first prism, the second prism and arrow; Described number of degrees regulation and control wheel and described inner lane index dial link mutually with the first prism, the second prism and arrow respectively, and described outer ring rotating disk indicates 0 degree of expression rotation start bit to 360 degree sense of rotation scales.
2. optical visual aid as claimed in claim 1 is characterized in that, described object lens (1) select the number of degrees to be+object lens of 2.5DS.
3. optical visual aid as claimed in claim 1 is characterized in that, described object lens (1) select the number of degrees to be+object lens of 5.0DS.
4. optical visual aid as claimed in claim 1 is characterized in that, the distance between described object lens (1) and the described eyepiece (2) can increase or reduce.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 201110367586 CN102411218B (en) | 2011-11-18 | 2011-11-18 | Optical visual aid |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 201110367586 CN102411218B (en) | 2011-11-18 | 2011-11-18 | Optical visual aid |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN102411218A CN102411218A (en) | 2012-04-11 |
| CN102411218B true CN102411218B (en) | 2013-04-24 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN 201110367586 Expired - Fee Related CN102411218B (en) | 2011-11-18 | 2011-11-18 | Optical visual aid |
Country Status (1)
| Country | Link |
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| CN (1) | CN102411218B (en) |
Families Citing this family (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105445958A (en) * | 2014-09-15 | 2016-03-30 | 湖南当下视力健康管理服务有限公司 | Adjustable prism and lens combined myopia controller |
Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN2318644Y (en) * | 1997-12-09 | 1999-05-12 | 香港生产力促进局 | Improved prism of optical device |
| CN101493573A (en) * | 2009-02-19 | 2009-07-29 | 徐军民 | Optical amblyopia visual aid |
| CN201302623Y (en) * | 2008-11-13 | 2009-09-02 | 项国飞 | Telescope |
Family Cites Families (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPH09281409A (en) * | 1996-04-11 | 1997-10-31 | Minolta Co Ltd | Binoculars and prism device |
| JP3825999B2 (en) * | 2001-08-20 | 2006-09-27 | キヤノン株式会社 | binoculars |
-
2011
- 2011-11-18 CN CN 201110367586 patent/CN102411218B/en not_active Expired - Fee Related
Patent Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN2318644Y (en) * | 1997-12-09 | 1999-05-12 | 香港生产力促进局 | Improved prism of optical device |
| CN201302623Y (en) * | 2008-11-13 | 2009-09-02 | 项国飞 | Telescope |
| CN101493573A (en) * | 2009-02-19 | 2009-07-29 | 徐军民 | Optical amblyopia visual aid |
Non-Patent Citations (3)
| Title |
|---|
| JP特开平9-281409A 1997.10.31 |
| 新型分光镜的设计;顾敏等;《教学仪器与实验》;19871130;第3卷(第06期);第1-3页 * |
| 顾敏等.新型分光镜的设计.《教学仪器与实验》.1987,第3卷(第06期),第1-3页. |
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| CN102411218A (en) | 2012-04-11 |
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