Optical system for color enhancement

An optical system and color enhancement technology, applied in the field of visual optics, which can solve the problems of confusion, color blindness, invalid color and black gray, and limited effect of color discrimination auxiliary technology.

Inactive Publication Date: 2019-03-12
中山欧光光电科技有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0013] The purpose of the present invention is to propose an optical system for color enhancement in order to solve the problems that the exi...

Method used

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  • Optical system for color enhancement
  • Optical system for color enhancement
  • Optical system for color enhancement

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0067] Taking a user with normal vision (no distance or nearsightedness) wearing color blindness auxiliary glasses as an example, the specific implementation method is as follows:

[0068] 1.1. Known high-dispersion and low-dispersion materials are SCHOTT's heavy lanthanum flint (LaSF9) and fluorine crown (FK51A) optical glass, and their refractive indices at characteristic wavelengths are:

[0069] Color, wavelength (nm)

Red, 650

Yellow, 575

Green, 530

Bi, 493

Blue 460

LaSF9 refractive index

1.8432

1.8520

1.8594

1.8673

1.8763

FB refractive index

1.4849

1.4869

1.4886

1.4902

1.4920

[0070] Table 1. The refractive index of optical glass at characteristic wavelength

[0071] 1.2. Make a high-dispersion convex lens and a low-dispersion concave lens to form a compound lens, the method is as follows. Take some D around 10 1 Value, use formula (13) to get E 1 ; Because of E 1 >0, knowing from formula (9) In formula (5), let the convex radian of one side of the convex lens be R 1A =R A...

Embodiment 2

[0087] Take a specific user with a myopia of 200 degrees wearing color blindness auxiliary glasses as an example, the specific implementation method:

[0088] 2.1, same as Example 1.1.

[0089] 2.2, as in Example 1.2, make a composite lens composed of a high-dispersion concave lens and a low-dispersion convex lens. The method is as follows. Take some D around -10 1 Value, use formula (13) to get E 1 ; Because of E 1 Formula (19) for myopia is 200 (the focal length of myopia glasses is f 0 = -0.5m) user becomes

[0090]

[0091] Put (22) into the first and third lines of (18) to get with About R A And put the result into the critical equations (20) and (21) and obtain two R A Value, and take the R that makes the high dispersion condition (6) hold A ; Use formula (22) to obtain R from A Calculation of R B ; Finally, a new lens radian value table for 200 degrees myopia is obtained, where the positive (negative) sign indicates the convex (concave) lens.

[0092] D1

-5

-10

-15

-20

E 1 (...

Embodiment 3

[0097] With no farsightedness, myopia (f 0 =∞) and the final optometry result is left eye dispersion D 1 = 10, right eye D 1 For example, a user with =5 wearing color blindness assist glasses, the specific implementation method is:

[0098] 3.1, same as Examples 1.1 to 1.3, a batch of f was obtained 0 =∞ and different D 1 The high dispersion lens.

[0099] 3.2. Cut these high-dispersion lenses into suitable sizes to make spectacle lenses. These spectacle lenses can be easily installed on spectacle frames specially used for optometry, and can also be easily removed for replacement.

[0100] 3.3, so that the left and right lenses of the glasses have the same D 1 , And obtain the user's eyes D according to Example 1.5 1 The best value is 10 at the same time.

[0101] 3.4. Keep the left lens of the glasses unchanged, and replace the D of the right lens separately 1 , Allowing users to perform color discrimination test and experience feedback according to the second step of the invention (...

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Abstract

The invention relates to an optical system for color enhancement, belongs to the field of visual optics, and aims at solving the problem that current color discrimination assistant technologies have limited effects and are completely useless for color blindness or can confuse colors and dark gray. The optical system for color enhancement includes an optical thin film; the optical thin film includes a yellow filtering belt and a green filtering belt, wherein the yellow filtering belt is used for filtering out yellow band light, and the green filtering belt is used for filtering out green band light; the yellow filtering belt and the green filtering belt are distributed in an optical path direction. The optical thin film is formed on the surface of a color-blindness assistant lens and is mounted on left and right spectacles frame bodies of color-blindness assistant spectacles. By adopting the optical system for color enhancement, on the basis of converting the colors into the relative light intensity of a series of sub-images to assist in color discrimination, the problem of easily confusing the colors and dark gray is solved, and the optical system for color enhancement is efficientto both severe color weakness and color blindness.

Description

Technical field [0001] The invention belongs to the field of visual optics and relates to an optical system for color enhancement. Background technique [0002] The human eye's perception of color can be divided into two main steps: physical detection (photosensitive and neural information transmission) and psychological perception [Color Matching and Color Discrimination, Vivianne C. Smith and Joel Pokorny, 2003, Elsevier Ltd.]. In the physical perception link, we need to consider a total of 4 photoreceptor cells on the human retina. The L, M and S types of cone cells in the human eye each contain different pigments, so that the three types of cone cells have different sensitivity to light of different wavelengths. The fourth rod cell is not sensitive to wavelength, it only senses the total intensity of light and only plays a significant role in an environment with extremely weak light. Under light stimulation, the intensity of the nerve signals released by the three types of ...

Claims

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Application Information

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IPC IPC(8): G02B5/20G02C7/10G02C7/02
CPCG02B5/20G02C7/024G02C7/10G02C2202/06
Inventor 李其然曹强秦秀波
Owner 中山欧光光电科技有限公司
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