CN1069029C - Standard model eye for subjective optometer - Google Patents
Standard model eye for subjective optometer Download PDFInfo
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- CN1069029C CN1069029C CN94117550A CN94117550A CN1069029C CN 1069029 C CN1069029 C CN 1069029C CN 94117550 A CN94117550 A CN 94117550A CN 94117550 A CN94117550 A CN 94117550A CN 1069029 C CN1069029 C CN 1069029C
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- diopter
- subjective
- cylinder
- distance
- looking
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- 230000005477 standard model Effects 0.000 title abstract 2
- 238000004519 manufacturing process Methods 0.000 abstract 1
- 238000000034 method Methods 0.000 abstract 1
- 238000012795 verification Methods 0.000 description 5
- 238000001514 detection method Methods 0.000 description 1
- 238000006073 displacement reaction Methods 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- 239000011521 glass Substances 0.000 description 1
- 230000001105 regulatory effect Effects 0.000 description 1
- 210000001525 retina Anatomy 0.000 description 1
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Abstract
The present invention relates to a technique and a device for directly checking subjective optometers. The device is composed of a telescoping diopter cylinder and a piece of diopter standard eyeglass, wherein the phi<v> of the diopter standard eyeglass is equal to KD, and the phi<v> is equal to-KD after an optometer is focused; images formed by parallel light returned along an original path can be obtained in the telescoping diopter cylinder, and a difference between the absolute values of KD and-KD is the indication error of a subjective optometer. The measuring range of the device (standard model eye) is from-2.5 to +2.5 D, or from-5 to +5 D, or from-10 to +10 D or from-15 to +15 D, and the device is composed of eight eyeglasses. The present invention has the characteristics of high precision, stable performance, simple structure of the device, low manufacturing cost and convenient use.
Description
The present invention relates to a kind of tester, the device of the subjective formula eye refractometer of especially a kind of verification
Eye refractometer is the novel ophthalmological instrument that development in recent years is got up, and its principle and structure are different, and subjective formula eye refractometer mainly is produced in China, Japan and the U.S..Subjective formula eye refractometer is by changing the wherein position of the movable lens between the object lens and eyepiece, the light that enters in the human eye clearly being imaged on the retina.According to the displacement of movable lens, determine the required corrigent number of degrees.And subjective formula eye refractometer needs verification, if error appears in eye refractometer, gives the number of degrees of optometry person's verification also inaccurate, thereby is difficult to allot suitable glasses.
The purpose of this invention is to provide a kind of simple in structure, easy to use, stable performance, the accuracy height, cost is low, and the calibration equipment that subjective formula eye refractometer is carried out verification that can anthropomorphic dummy's eye function.
The calibration equipment of the subjective formula eye refractometer of the present invention, comprise the diopter cylinder of looking in the distance, one diopter standard eyeglass wherein is set before the object lens of the described diopter cylinder of looking in the distance, described diopter standard eyeglass places microscope base, compressed by trim ring, described microscope base is installed on the described diopter cylinder of looking in the distance by threaded connector.
The wherein said diopter standard of the calibration equipment eyeglass of the subjective formula eye refractometer of the present invention is: ± 2.5D, ± 5D, ± 10D, ± 15D.
Advantage of the present invention is to use the existing diopter cylinder of looking in the distance to be connected with diopter standard eyeglass with good effect, and simple in structure, this calibration equipment can be simulated the function of human eye, can solve the detection needs of wide region again, and is easy to use, and guarantees that value is accurate.Stable performance, cost is low.
Other details of the present invention and characteristics can be cheer and bright by reading the embodiment hereinafter encyclopaedize in conjunction with the accompanying drawings.
Fig. 1 is the light path principle figure of the subjective formula eye refractometer of the present invention calibration equipment;
Fig. 2 is the structural representation of the subjective formula eye refractometer of the present invention calibration equipment;
Fig. 3 is the structural representation of the subjective formula eye refractometer of the present invention calibration equipment diopter standard eyeglass.
As Fig. 1, shown in 2, be provided with diopter standard eyeglass 2 before the object lens 7 of the diopter cylinder 1 of looking in the distance, as shown in Figure 3, described diopter standard eyeglass 2 places microscope base 4, is compressed by trim ring 5, described microscope base 4 is installed on the described diopter cylinder 1 of looking in the distance, as shown in Figure 2 by threaded connector 6.Described diopter standard eyeglass is: ± 2.5D, ± 5D, ± 10D, ± 15D.When verification, the diopter cylinder of will looking in the distance earlier zeroing, described calibration equipment is placed the test point place of subjective formula refractor 3, by the picture that the diopter cylinder 1 of looking in the distance is observed in the subjective formula eye refractometer 3, the sighting distance of regulating subjective formula eye refractometer 3 makes observed picture clear, at this moment, if the vertex lens power of used diopter standard eyeglass 2 is φ V=KD, the indicated value of subjective formula eye refractometer 3 is-KD that the difference of absolute value between the two both had been the error of subjective formula eye refractometer.
Claims (2)
1, a kind of calibration equipment of subjective formula eye refractometer, comprise the diopter cylinder of looking in the distance, it is characterized in that before the object lens of the described diopter cylinder of looking in the distance a diopter standard eyeglass being set, described diopter standard eyeglass places microscope base, compressed by trim ring, described microscope base is installed on the described diopter cylinder of looking in the distance by threaded connector.
2, the calibration equipment of subjective formula eye refractometer according to claim 1 is characterized in that described diopter standard eyeglass is: ± 2.5D, ± 5D, ± 10D, ± 15D.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN94117550A CN1069029C (en) | 1994-10-28 | 1994-10-28 | Standard model eye for subjective optometer |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN94117550A CN1069029C (en) | 1994-10-28 | 1994-10-28 | Standard model eye for subjective optometer |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN1126580A CN1126580A (en) | 1996-07-17 |
| CN1069029C true CN1069029C (en) | 2001-08-01 |
Family
ID=5038430
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN94117550A Expired - Fee Related CN1069029C (en) | 1994-10-28 | 1994-10-28 | Standard model eye for subjective optometer |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN1069029C (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN100427024C (en) * | 2006-05-01 | 2008-10-22 | 张焕旭 | Single-barrel testing scope for eyesight |
Families Citing this family (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104422583B (en) * | 2013-08-28 | 2017-03-22 | 中国计量科学研究院 | Optical system, optical detection device and method for detecting integrated refractometer |
| CN105549131B (en) * | 2016-01-29 | 2017-12-08 | 中国计量科学研究院 | A kind of serial Test lenses for being used to examine contact lense geometric parameter measurement instrument |
| CN105942971A (en) * | 2016-06-25 | 2016-09-21 | 宁波明星科技发展有限公司 | Full-automatic comprehensive optometry unit |
| CN107978212B (en) * | 2017-12-14 | 2024-03-22 | 广东省医疗器械质量监督检验所 | Objective type simulation eye convenient for adjusting top focal power |
-
1994
- 1994-10-28 CN CN94117550A patent/CN1069029C/en not_active Expired - Fee Related
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN100427024C (en) * | 2006-05-01 | 2008-10-22 | 张焕旭 | Single-barrel testing scope for eyesight |
Also Published As
| Publication number | Publication date |
|---|---|
| CN1126580A (en) | 1996-07-17 |
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| C10 | Entry into substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| C06 | Publication | ||
| PB01 | Publication | ||
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| C19 | Lapse of patent right due to non-payment of the annual fee | ||
| CF01 | Termination of patent right due to non-payment of annual fee |