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Binocular optometry device and method

A binocular and light source technology, applied in the field of optical measurement, can solve problems such as low accuracy and high refractive errors

Active Publication Date: 2016-04-20
SHENZHEN CERTAINN TECH CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0007] The purpose of the present invention is to measure binocular diopter by the principle of wavefront aberration measurement, solve the problem that the accuracy of wavefront aberration measurement diopter method is not high for high refractive error, and can measure binocular diopter, astigmatism, axial position and binocular pupil at the same time distance

Method used

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  • Binocular optometry device and method
  • Binocular optometry device and method

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0054] Such as figure 1 shown.

[0055] The light beam emitted by the light source 1 passes through the third lens group 2 composed of several imaging lenses, and then enters the third half-mirror 3, where part of the light beam is reflected by the third half-mirror 3 to form reflected light, and the other A part of the light beam is transmitted through the third half-mirror 3 to form transmitted light. The reflected light is reflected by the first half-mirror 4 to the fundus Er of the first human eye 8 (ie, the upper eye E), and is scattered by the fundus Er, and the reflected light carrying the fundus information of the first human eye 8 is then Return to the first half-mirror 4, transmit to the first lens group 5 through the first half-mirror 4, and finally image on the first imaging unit 7 through the first microlens array 6 to obtain the first person The first dot matrix diagram of the reflected light of the fundus Er of eye 8, see figure 2 Er1 in. The transmitted li...

Embodiment 2

[0072] Such as image 3 As shown, the light beam emitted by the light source 1 passes through the third lens group 2 composed of several imaging lenses, and then enters the third half-mirror 3, and is divided into two parts of the light beam, wherein a part of the light beam passes through the third half-mirror 3 Reflected to the first half mirror 4, another part of the light beam is transmitted to the first mirror 9 through the third half mirror 3. The beam of light reflected to the first half-mirror 4 is reflected by the first half-mirror 4, and is incident on the fundus Er (ie, the eye E above) of the first human eye 8, and is scattered through the fundus Er, carrying The reflected light beam of the fundus information of the first human eye 8 returns to the first half-mirror 4, transmits to the second reflector 15 through the first half-mirror 4, and the second reflector 15 reflects the light beam to the first half-mirror 4. Two reflecting mirrors 16, the light beam passes...

Embodiment 3

[0080] refer to Figure 4 , in this embodiment, the light beam emitted by the light source 1 passes through the third lens group 2 composed of several imaging lenses, and then enters the third half-mirror 3, where a part of the light beam is reflected by the third half-mirror 3 , to form reflected light, and another part of the light beam is transmitted through the third half mirror 3 to form transmitted light. The reflected light is reflected to the first Dove prism 21 through the first half-mirror 4, and after being refracted by the first Dove prism 21, the light beam is incident on the fundus Er of the first human eye 8 (ie, the upper eye E). Scattered by the fundus Er, the reflected light carrying the fundus information of the first human eye 8 returns to the first presbyopic prism 21, and after being refracted by the first presbyopic prism 21, returns to the first half mirror 4, passes through The first half-mirror 4 transmits to the first lens group 5, and finally forms...

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Abstract

The invention discloses a binocular optometry device and method. The binocular optometry device comprises a light source, a condensing lens group, a beam splitting device and an optical element adjusting device, wherein the beam splitting device splits light into two beams; a first beam of light forms a first lattice diagram of fundus reflected light of a first human eye on a first imaging unit through a first fundus imaging optical path; a second beam of light forms a second lattice diagram of fundus reflected light of a second human eye on a second imaging unit through a second fundus imaging optical path; the optical element adjusting device is used for adjusting the first and second fundus imaging optical paths along a real pupil distance direction; the light source is adjusted along an optical axis direction and fogging is maintained, so that first and second clear lattice diagrams of double eye fundi of subjects of different diopters can be respectively obtained on the first imaging unit and the second imaging unit; the light source and the double eye fundi are conjugate with respect to the condensing lens group. By adopting the binocular optometry device and method, double eye diopters and a pupil distance can be measured, and the astigmatism and axial positions of double eyes can be judged accurately.

Description

technical field [0001] The invention relates to the technical field of optical measurement, in particular to a binocular optometry device and an optometry method. Background technique [0002] In the prior art, although the instrument for measuring abnormal eyesight by geometric optics method can measure both eyes at the same time, it usually can only detect one parameter. For example, US Patent No. 5,777,718 is only used to measure refraction. Chinese patent CN101718542B, an optical distance measuring device and its portable refractometer, discloses a method and device for measuring the diopter of the human eye by measuring the working distance between the human eye and the instrument, and it is only used to measure the refraction. [0003] More parameters can be measured by the wavefront optical method, but usually only one eye can be measured by this method, because the sensitivity and high requirements of wavefront measurement to light make it difficult to use spectrosco...

Claims

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Application Information

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IPC IPC(8): A61B3/103A61B3/11A61B3/10A61B3/14A61B3/12
CPCA61B3/10A61B3/103A61B3/1035A61B3/111A61B3/12A61B3/14A61B3/132G06T7/70G06T7/0012G06T2207/30041
Inventor 郭曙光万明明吴蕾何卫红
Owner SHENZHEN CERTAINN TECH CO LTD
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