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Measurement system and measurement method for vision health comfort degree

A measurement system and comfort technology, which is applied in the fields of eye testing equipment, medical science, diagnosis, etc., can solve the problems of lack of objective indicators, limitation of visual fatigue and health comfort

Active Publication Date: 2013-10-23
BEIJING YANGMING ZHIDAO OPTOELECTRONICS TECH
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0005] Existing research focuses on the subjective evaluation of visual fatigue and lacks the support of objective indicators, which greatly limits the formulation of evaluation standards for visual fatigue and health comfort and the promotion of certification testing

Method used

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  • Measurement system and measurement method for vision health comfort degree
  • Measurement system and measurement method for vision health comfort degree
  • Measurement system and measurement method for vision health comfort degree

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0058] Such as figure 1 As shown, the measurement system of the present invention includes: a measurement evaluation main system (1) and a measurement simulation environment device (2).

[0059] The main measurement and evaluation system includes (a) a central control computer for recording the test data of (b), (c) and (d) three types of equipment; (b) a comprehensive optometry table, which can obtain objective indicators of the human eye ( 3) There are ① basic refraction (Refraction, R), ② convergence (Convergence Angle, CA) and ③ color recognition (Discrimination of Colour, DOC); (c) aberrometer, aberration exists in all optical systems, the human eye Is an extremely complex optical system, it also has aberrations. These aberrations affect the imaging quality of the retina, so that a point on the object is not an ideal image point on the corresponding point of the retina, but a divergent spot. As a result, the contrast of the entire retina image decreases and the vision is...

Embodiment 2

[0110] Taking the evaluation of a certain 3D TV as an example, the method of applying the measurement system of the present invention to measure visual health and comfort is as follows:

[0111] First, the following darkroom viewing conditions should be set for the sample to be tested:

[0112] Darkroom illumination ≤150lux

[0113] The ratio of inactive screen brightness to peak brightness is ≤0.02;

[0114] When displaying in a dark room, the ratio of the brightness of the screen displaying only the black level to the brightness of the corresponding screen displaying only the peak white level is ≈0.01;

[0115] The maximum viewing angle relative to the nominal value shall be 30°;

[0116] The ratio of the background brightness behind the screen to the peak brightness of the image is ≈0.15.

[0117] Referring to Example 1, based on the successfully constructed neural network model, the evaluation and measurement of the 3D TV was started, and the 3D TV was placed in the abo...

Embodiment 3

[0129] Taking the evaluation of a certain type of highway street lamp as an example, the method for measuring visual health and comfort using the measurement system of the present invention is as follows:

[0130] First, the sample under test should be set image 3 Measurements were performed under the simulated setup shown. Install this type of highway street lights in image 3 on the street light shown.

[0131] Referring to Example 1, based on the successfully constructed neural network model, the evaluation and measurement of this type of highway street lamp was started, and this type of highway street lamp was placed under the conditions of the above-mentioned simulation device for testing.

[0132] According to the test process of the first step in Example 1, select 10 effective test samples to carry out the test of this type of highway street lamp. Before the test, each sample should rest with eyes closed for 20 minutes in a dark room environment, and then perform (b...

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Abstract

The invention relates to a measurement system and a measurement method for vision health comfort degree, and provides a set of perfect measurement and evaluation system and method by testing human eye physical indexes and giving objective vision fatigue indexes for the emerging industries of LED illumination, 3-dimensional televisions and the like and the field of vision health. The measurement system comprises a main testing system and a testing environment analog device. The measurement method comprises the following steps: obtaining the objective vision fatigue index by testing multiple terms of human eye physical indexes; establishing mapping relation between multiple terms of complex objective indexes and subjective evaluation according to the characteristics such as self study, organization, self adapting and nonlinear dynamic treatment of a BP neural network so as to establish a BP neural network model based on the human eye physical indexes and related to a subjective fatigue evaluation degree, wherein the objective indexes are used for evaluating vision fatigue, and nonlinear relation exists among the objective indexes; through the establishing of the model, the subjective indexes are replaced by the objective indexes during the impact evaluation of light source on human eye vision health.

Description

technical field [0001] The invention relates to a measurement system and method for visual health and comfort, which provides an objective indicator of visual fatigue by testing the physical indicators of the human eye, and provides a complete set of visual health indicators for emerging industries such as LED lighting and 3D TV, as well as for the field of visual health. measurement and evaluation systems and methods. Background technique [0002] 90% of people's access to external information comes from vision, so one of the main mechanisms that affect lighting health comes from visual channels. After long-term evolution, human beings have also formed a corresponding system for receiving and feeling light. Light passes through the pupil, lens, and vitreous body to reach the retina, and then is received by cone cells and rod cells, converted into electrical signals, transmitted to the visual cortex of the brain, and finally converted into visual signals in the brain. In t...

Claims

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Application Information

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IPC IPC(8): A61B3/18
Inventor 蔡建奇杨帆杜鹏
Owner BEIJING YANGMING ZHIDAO OPTOELECTRONICS TECH
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