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Optometry system based on integral optometry unit

A refractometer and polarizer technology, applied in the field of optometry system, can solve the problems of difficulty in fully relaxing, unable to reflect the refraction state of the subject, and the optometry result is in the direction of myopia. Precise results of optometry

Inactive Publication Date: 2016-10-12
JILIN UNIV
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

In addition, it is easy to produce more eye accommodation when viewing objects with one eye, and it is difficult to fully relax
The results measured by using the existing comprehensive optometry instrument optometry may not reflect the actual refractive state of the subject, and the optometry results are often more in the direction of myopia

Method used

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  • Optometry system based on integral optometry unit
  • Optometry system based on integral optometry unit
  • Optometry system based on integral optometry unit

Examples

Experimental program
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Embodiment Construction

[0023] see figure 1 , figure 2 , image 3 and Figure 4 As shown, in this embodiment, a polarizer 3 is arranged in the peephole 2 of the existing comprehensive refractorometer 1, and the polarizer 3 is controlled by an auxiliary lens knob. 5. A liquid crystal display device 6 is arranged outside the front peephole 2, and a remote control device 8 controls the liquid crystal display device 6 to present different visual marks.

[0024] The polarizer is a linear polarizer, and the polarization direction B of the linear polarizer is set to 90°.

[0025] The liquid crystal display device 6 is composed of a backlight light source 61, a rear polarizing film 62, a rear glass substrate 63, a rear conducting electrode 64, a liquid crystal layer 65, a leading electrode 66, a color filter 67 and a front glass from front to back. Substrate 68 composition.

[0026] In this embodiment, a polarizer 3 is arranged inside the peephole 2 of the existing comprehensive optometry instrument 1,...

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Abstract

The invention discloses an optometry system based on an integral optometry unit. The optometry system is characterized in that a polaroid is arranged in a peep hole of the existing integral optometry unit; the polaroid is operated and controlled by an auxiliary lens knob; a spherical lens and a cylindrical lens are sequentially arranged in front of the polaroid; a liquid crystal display device is arranged outside the part, in front of the cylindrical lens, of the peep hole; and an optometrist controls the liquid crystal display device to display different sighting targets through a remote control device. During single-eye optometry, the polaroid is put in front of the inspected eye; no polaroid is put in front of the uninspected eye; during double-eye optometry, the polaroids are put in front of the two eyes. The optometry process of the optometry system is more similar to the human eye real object viewing state; the polaroid is different from a full-black light shielding sheet; people can still see outside objects through the polaroid, so that the two eyes are in an open state; the double-eye regulation can be easily relaxed; the optometry result is precise; the myopia overcorrection and hyperopia under-correction are avoided; and the glasses getting effect is good.

Description

technical field [0001] The invention relates to an optometry system based on the existing comprehensive optometry instrument, which is used to carry out refractive inspection on human eyes. Background technique [0002] At present, the existing subjective optometry system consists of a comprehensive optometry instrument and a projection eye chart. When doing optometry, cover one eye of the examinee with an opaque mask, and the other eye looks at the visual mark presented by the projection eye chart through the peephole of the existing comprehensive optometry instrument, and completes the eye in the state of monocular vision. the refraction of the eye; then exchange the cover and complete the refraction of the other eye. Finally, do a binocular balance test with the eyes open to determine the final optometry result. However, when the existing comprehensive optometry is used for monocular refraction, due to the shading effect of the covering sheet, the amount of light enteri...

Claims

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Application Information

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IPC IPC(8): A61B3/028
CPCA61B3/0285
Inventor 王瑞卿胡娱新孙霁宇
Owner JILIN UNIV