CN201263675Y - Inner read type projection optometry instrument - Google Patents
Inner read type projection optometry instrument Download PDFInfo
- Publication number
- CN201263675Y CN201263675Y CNU2008201536745U CN200820153674U CN201263675Y CN 201263675 Y CN201263675 Y CN 201263675Y CN U2008201536745 U CNU2008201536745 U CN U2008201536745U CN 200820153674 U CN200820153674 U CN 200820153674U CN 201263675 Y CN201263675 Y CN 201263675Y
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- illuminator
- liquid crystal
- object lens
- lens
- eye refractometer
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Abstract
The utility model relates to a vision inspection tester, in particular to an in-reading type projective optometry instrument which comprises a light source, a collecting mirror and an object lens which are sequentially arranged on a light path and also comprises a liquid crystal screen which is arranged on the light path between the collecting mirror and the object lens. The object lens is a convex lens; rays emitted from the light source permeates the collecting mirror to continuously permeate the liquid crystal screen with patterns and then enters the eyes of person through the object lens; the patterns on the liquid crystal screen are imaged at a position with a certain distance with the eyes so as to achieve the purpose that a short-box instrument inspects the vision. The utility model is placed in a poison which is 1.1 m in front of a person who is inspected, and the image formed by the instrument is 5 m away from the person who is inspected; original driving images needed by the optometry is stored in an integrated circuit on a master control circuit board of the liquid crystal screen, so the amount of the patterns can reach thousands upon thousands, and the patterns can be transferred instantly.
Description
Technical field
This utility model relates to a kind of vision tester, reads formula projection eye refractometer in especially a kind of.
Background technology
Traditional optometry inspection, as shown in fig. 1, the lamp box visual acuity chart of using 22 that is used to test eyesight requires to hang over from 5m place, person under inspection the place ahead, and general length at least is greater than the inspection chamber of 5m, so must there be sizable area the optometry chamber.Need a visual acuity chart 22 simultaneously, the a pair of glasses frame, in this inspection chamber, also need suitably bright light, muffle eyes during inspection, eyes 30 are carried out examination of visual acuity, check the another eyes after finishing in turn, according to what of vision, select the eyeglass of the corresponding number of degrees to insert spectacle-frame then, repetition test to approximate people feel suitable till.Such inspection method has a plurality of shortcomings, 1) be that the space that needs is bigger, because check apart from 5M it is that standard can not shorten, obviously will bring huge rent cost at the center, downtown area of an inch of land is an inch of gold; 2) be that speed is slow, because all are artificial, so check and adjustment process needs more than 10 minutes 3) be that operator's experience is extremely important, different inspection personnel has more difference to same patient's check result.
In order to dwindle optometry chamber area, adopt a kind of improved optometry technology, as shown in Figure 2, can put a plane mirror 21 at 2.5m place, person under inspection the place ahead, and with the lamp box visual acuity chart or tuck in brilliant screen visual acuity chart and be placed on the person under inspection back, the person under inspection watches by flat mirror reflects, and being imaged on the 5m place is 20, reaches equal effect.Though by specularly reflected jiong method, to check that distance has shortened half, but, refractor will be acquired usually in modern optometry chamber, equipment such as test piece instrument and comprehensive optometry platform, the visual acuity chart of reflection will be stopped, can't reach the purpose of farthest using the effective usable floor area in optometry chamber equally.
Current now optometry equipment; as shown in Figure 3; by increasing the way of concave mirror or convex lens; play the mode of pattern with lantern slide; optometry distance is shortened to distance about one meter; this instrument internal structure as described in Figure 4; be provided with a cover optical system; comprise reflecting surface mirror 17, projection lens 13, semi-transparent spectroscope 11; steering reflection mirror 12; 18 and the protection eyeglass 10; it will be installed in a picture group sheet 24 on the rotating disk circumference 14 one by one be imaged on person under inspection the place ahead, before the person under inspection is sitting in instrument during the 1.1m place, the virtual image that optical system forms just in time drop on its at the moment 5m place be 23.Rotary disk 14 can be changed various picture 24, to reach the purpose of testing eyesight.Be subjected to the restriction of disk size, pattern generally is no more than 40 kinds.
Owing to used a semi-transparent spectroscope 11; when light sees through the luminance loss half; the light that the semi-transparent spectroscope of arrival passes after the reflecting mirror imaging loses half again; the person under inspection sees through dark cover glass and has lost half again; so the whole process of light is lost in more than 90%; therefore, instrument must adopt the Halogen light 16 of high brightness as light source.Though dwindled the volume of whole instrument effectively, still had following defective: 1) Halogen light 16 caloric values are big, cause that the machine temperature increases 2) cause that easily Halogen light damages, 3) being subjected to the restriction of disk 14 sizes, it is limited that mechanical type changes the figure number of patterns.
The utility model content
This utility model has overcome above-mentioned shortcoming, provide a kind of simple in structure, compact, light intensity loss is little, show and to read formula projection eye refractometer in flexile.
The technical scheme in the invention for solving the technical problem is: read formula projection eye refractometer in a kind of, comprise the light source (2), condenser lens (5), the object lens (1) that are arranged in order on light path, also comprise the liquid crystal display screen (6) on the light path that is arranged between condenser lens (5) and the object lens (1), described object lens (1) are convex lenss.
Light path between liquid crystal display screen (6) and the object lens (1) is provided with first illuminator (8), and the incident light axis and the reflection optical axis of described illuminator (8) are angled.
Be provided with second illuminator (7) between liquid crystal display screen (6) and first illuminator (8), the incident light axis and the reflection optical axis of described second illuminator (7) are angled.
Be provided with the 3rd illuminator (3) between described light source (2) and the condenser lens (5), the incident light axis and the reflection optical axis of described the 3rd illuminator (3) are angled.
The incident light axis of described illuminator becomes 90 degree with reflection optical axis.
Can be provided with one group of image transferring lens (4) between described second illuminator (7) and first illuminator (8).
The incident light axis of described second illuminator (7) can be parallel with the emergent light axis of first illuminator (8).
In the described optical system by light source (2), illuminator (3), (7), (8), liquid crystal display screen (6), condenser lens (5), object lens (1), image transferring lens (4) formation, each optical axis is in the same plane.
This utility model comprises light source, condenser lens, object lens and liquid crystal display screen, described object lens are convex lenss, the light that sends from light source sees through the condenser lens continuation through patterned liquid crystal display screen, enter human eye by object lens again, pattern on the liquid crystal display screen is imaged on from human eye necessarily to be located, reach the purpose of short case inspect by instrument vision, and this utility model is placed on 1.1m place, person under inspection the place ahead, the formed image of instrument is apart from person under inspection 5m, in the integrated circuit of original driving image storage on liquid crystal display screen master control circuit plate that optometry needs, therefore number of patterns can reach thousands of kinds, and can call in moment.
In addition, can also before the object lens on light path an illuminator be set, light enters object lens through the reflection turnover, reaches same purpose.
Can also increase by one group of illuminator, one is between light source and liquid crystal display screen, and it is two between liquid crystal display screen and reflecting mirror.
Can also between two adjacent illuminators, one group of image transferring lens be set, to promote image quality and definition.
Compared with prior art, owing to do not adopt semi-transparent spectroscope, do not need the cover glass of Dark grey yet; therefore except the absorption of optical element, light intensity loss seldom can adopt general electricity-saving lamp as light source; this bulb is low price not only, and can buy everywhere.Other that compare adopt the instrument of intense light sources such as high-power Halogen light, have avoided often occurring the overheated defective of burning easily of bulb.
Replace lantern slide with liquid crystal display screen simultaneously, increased the image bibliography that to demonstrate again greatly, promoted inspection precision and efficient.
Description of drawings
Fig. 1 is existing a kind of optometry technology sketch map;
Fig. 2 is existing another kind of optometry technology sketch map;
Fig. 3 is that existing optometry equipment uses sketch map;
Fig. 4 is an optometry equipment internal structure sketch map among Fig. 3;
Fig. 5 is this utility model structural representation.
Label declaration:
1---object lens, 2---light source, 3---illuminator, 4---image transferring lens; 5---condenser lens, 6---liquid crystal display screen, 7---illuminator, 8---illuminator; 10---protective glass, 11---the beam split pellicle mirror, 12---illuminator, 13---projection lens; 14---the lantern slide rotating disk, 15---condenser lens, 16---Halogen light, 17---imaging reflecting concave mirror; 19---eye refractometer, 21---reflecting mirror, 22---visual acuity chart; 23---virtual image, 24---lantern slide, 30---person under inspection's eyeball.
The specific embodiment
This utility model as shown in Figure 5, the active light source that sends from light source 2 enters condenser lens 5 through reflecting mirror 3, light is near the parallel liquid crystal display screen 6 of injecting, the pattern that shows on the liquid crystal display screen 6 is thrown on the illuminator 7, entered image transferring lens group 4, project illuminator 8 then through reflection, continue to reflex on the object lens 1, enter human eye 30 because object lens 1 are convex lenss, just in human eye imaging to the 5m virtual image far away.
In this utility model, through successive reflective, lens and image transferring lens group, without any light losing almost, problems such as the heating that has overcome the use Halogen light effectively and caused, fluorescent tube loss, use liquid crystal display screen 6 simultaneously, it almost is infinitely and very fast that its image is changed, and has increased optometry efficient and precision greatly.
Described incident light axis becomes 90 degree with reflection optical axis.In the optical system that described light source 2, illuminator 3,7,8, liquid crystal display screen 6, condenser lens 5, object lens 1, image transferring lens 4 constitute, each optical axis is in the same plane, and described object lens 1 are convex lenss.Make light channel structure compact more, the instrument overall volume is smaller and more exquisite.
This utility model is placed on 1.1m place, person under inspection the place ahead, the formed image of instrument is apart from person under inspection 5m, in the integrated circuit of original driving image storage on liquid crystal display screen master control circuit plate that optometry needs, so number of patterns can reach thousands of kinds, and can call in moment.
More than be described in detail reading formula projection eye refractometer in provided by the utility model, used specific case herein principle of the present utility model and embodiment are set forth, the explanation of above embodiment just is used for helping to understand method of the present utility model and core concept thereof; Simultaneously, for one of ordinary skill in the art, according to thought of the present utility model, the part that all can change in specific embodiments and applications, in sum, this description should not be construed as restriction of the present utility model.
Claims (10)
1. read formula projection eye refractometer in one kind, comprise the light source (2), condenser lens (5), the object lens (1) that are arranged in order on light path, it is characterized in that: also comprise the liquid crystal display screen (6) on the light path that is arranged between condenser lens (5) and the object lens (1), described object lens (1) are convex lenss.
2. read formula projection eye refractometer in according to claim 1, it is characterized in that: the light path between liquid crystal display screen (6) and the object lens (1) is provided with first illuminator (8), and the incident light axis and the reflection optical axis of described illuminator (8) are angled.
3. read formula projection eye refractometer in according to claim 2, it is characterized in that: described incident light axis becomes 90 degree with reflection optical axis.
4. read formula projection eye refractometer in according to claim 2, it is characterized in that: be provided with second illuminator (7) between liquid crystal display screen (6) and first illuminator (8), the incident light axis and the reflection optical axis of described second illuminator (7) are angled.
5. read formula projection eye refractometer in according to claim 4, it is characterized in that: described incident light axis becomes 90 degree with reflection optical axis.
6. read formula projection eye refractometer according to claim 2 or 4 in described, it is characterized in that: be provided with the 3rd illuminator (3) between described light source (2) and the condenser lens (5), the incident light axis and the reflection optical axis of described the 3rd illuminator (3) are angled.
7. read formula projection eye refractometer in according to claim 6, it is characterized in that: described incident light axis becomes 90 degree with reflection optical axis.
8. read formula projection eye refractometer in according to claim 4, it is characterized in that: be provided with one group of image transferring lens (4) between described second illuminator (7) and first illuminator (8).
9. according to each reads formula projection eye refractometer in described in the claim 1～5, it is characterized in that: the incident light axis of described second illuminator (7) is parallel with the emergent light axis of first illuminator (8).
10. read formula projection eye refractometer in according to claim 9, it is characterized in that: in the described optical system by light source (2), illuminator (3), (7), (8), liquid crystal display screen (6), condenser lens (5), object lens (1), image transferring lens (4) formation, each optical axis is in the same plane.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNU2008201536745U CN201263675Y (en) | 2008-09-28 | 2008-09-28 | Inner read type projection optometry instrument |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNU2008201536745U CN201263675Y (en) | 2008-09-28 | 2008-09-28 | Inner read type projection optometry instrument |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN201263675Y true CN201263675Y (en) | 2009-07-01 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CNU2008201536745U Expired - Fee Related CN201263675Y (en) | 2008-09-28 | 2008-09-28 | Inner read type projection optometry instrument |
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| Country | Link |
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| CN (1) | CN201263675Y (en) |
Cited By (9)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103565397A (en) * | 2012-07-31 | 2014-02-12 | 尼德克株式会社 | Eye examination device |
| JP2014028069A (en) * | 2012-07-31 | 2014-02-13 | Nidek Co Ltd | Optometer |
| CN103876705A (en) * | 2013-08-23 | 2014-06-25 | 温州雷蒙光电科技有限公司 | Vision tester |
| CN105996973A (en) * | 2016-05-10 | 2016-10-12 | 吉林大学 | Optometry system based on integral optometry unit |
| CN106137116A (en) * | 2016-08-26 | 2016-11-23 | 四川远瞻智汇科技有限公司 | A kind of vision testing method and device |
| CN107157437A (en) * | 2017-06-22 | 2017-09-15 | 宁波明星科技发展有限公司 | A kind of twin-lens reflex formula liquid crystal vision tester for eyesight |
| CN108888235A (en) * | 2018-05-22 | 2018-11-27 | 苏州佳世达电通有限公司 | Brilliant Eyes frame |
| CN109820475A (en) * | 2019-02-25 | 2019-05-31 | 上海雄博精密仪器股份有限公司 | The light channel structure of interior reading formula projection vision tester for eyesight |
| CN109452928B (en) * | 2018-11-27 | 2021-03-02 | 赵振铎 | Lens displacement optometry system based on pupil image acquisition by adopting cloud technology |
-
2008
- 2008-09-28 CN CNU2008201536745U patent/CN201263675Y/en not_active Expired - Fee Related
Cited By (10)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103565397A (en) * | 2012-07-31 | 2014-02-12 | 尼德克株式会社 | Eye examination device |
| JP2014028069A (en) * | 2012-07-31 | 2014-02-13 | Nidek Co Ltd | Optometer |
| CN103565397B (en) * | 2012-07-31 | 2016-08-10 | 尼德克株式会社 | Ophthalmic unit |
| CN103876705A (en) * | 2013-08-23 | 2014-06-25 | 温州雷蒙光电科技有限公司 | Vision tester |
| CN105996973A (en) * | 2016-05-10 | 2016-10-12 | 吉林大学 | Optometry system based on integral optometry unit |
| CN106137116A (en) * | 2016-08-26 | 2016-11-23 | 四川远瞻智汇科技有限公司 | A kind of vision testing method and device |
| CN107157437A (en) * | 2017-06-22 | 2017-09-15 | 宁波明星科技发展有限公司 | A kind of twin-lens reflex formula liquid crystal vision tester for eyesight |
| CN108888235A (en) * | 2018-05-22 | 2018-11-27 | 苏州佳世达电通有限公司 | Brilliant Eyes frame |
| CN109452928B (en) * | 2018-11-27 | 2021-03-02 | 赵振铎 | Lens displacement optometry system based on pupil image acquisition by adopting cloud technology |
| CN109820475A (en) * | 2019-02-25 | 2019-05-31 | 上海雄博精密仪器股份有限公司 | The light channel structure of interior reading formula projection vision tester for eyesight |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| ASS | Succession or assignment of patent right |
Owner name: SHANGHAI SUPORE INSTRUMENTS CO., LTD Free format text: FORMER OWNER: SHANGHAI YANKE INSTRUMENT CO., LTD. Effective date: 20100622 |
|
| C41 | Transfer of patent application or patent right or utility model | ||
| COR | Change of bibliographic data |
Free format text: CORRECT: ADDRESS; FROM: 200444 NO.42, LANE 1398, ZHENCHEN ROAD, SHANGHAI CITY TO: 200444 NO.800, YEJI ROAD, BAOSHAN DISTRICT, SHANGHAI CITY |
|
| TR01 | Transfer of patent right |
Effective date of registration: 20100622 Address after: 200444, 800, Shanghai, Baoshan District road performance Patentee after: Shanghai Supore Instruments Co., Ltd. Address before: 200444 No. 1398, Lane 42, Zhen Chen Road, Shanghai, China Patentee before: SHANGHAI YANKE INSTRUMENT CO., LTD. |
|
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20090701 Termination date: 20170928 |
|
| CF01 | Termination of patent right due to non-payment of annual fee |