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Film layer structure of optical lens

A film structure and optical lens technology, applied in optics, optical filters, optical components, etc., can solve problems such as changes, inability to solve film structure, and not suitable for interference type cut-off filter film structure design, etc., to achieve The effect of improving uniformity and improving optical performance

Inactive Publication Date: 2006-12-27
ASIA OPTICAL CO INC
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0007] None of the methods for adjusting the optical performance of the optical filter disclosed in the above materials can solve the problem that the spectrum of the existing film layer structure changes with the change of the incident angle of light, and it is even more unsuitable for interference-type cut-off filters. In the design of the film layer structure

Method used

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  • Film layer structure of optical lens
  • Film layer structure of optical lens
  • Film layer structure of optical lens

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Experimental program
Comparison scheme
Effect test

Embodiment Construction

[0017] This embodiment takes the interference type cut-off filter as an example to introduce the film layer structure and its optical performance of the present invention in detail. Of course, the film layer structure can also be applied to other optical elements.

[0018] Substrate

BK7

optical thickness

Tier 1

TiO 2

0.35

layer 2

SiO 2

0.138

layer 3

TiO 2

0.35

layer 4

SiO 2

0.138

-

-

-

-

-

-

24th floor

SiO 2

0.138

Air

AIR

[0019] When the angle of incidence of the incident light is 0 degrees, the film layer structure 11 of the present invention using the above-mentioned design values ​​can be obtained as follows figure 2 In the spectral curve c shown in the figure, the wavelength position of the 50% transmittance of the spectral curve c in the figure is 649.5nm; but if the incident angle of the incident l...

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Abstract

The invention relates to a film structure of optical lens, wherein said film is formed by alternatively stacked the materials with high and low refractive indexes, while the optical thickness of each high-refractive film is high, and the optical thickness of each low-refractive film is low, wherein said film can be plated on interference cut-off light filter; the high-refractive material can be made from titania, while the low one can be made from silicon dioxide; if the central wavelength of incident light is 744nm, the optical thickness of each high-refractive film is 0.35 and the optical thickness of each low-refractive film is 0.138; when the light is emitted to the interference cut-off light filter, the change of light spectrum deflection caused by different incident angle can be reduced, to improve the optical property.

Description

【Technical field】 [0001] The invention relates to a film layer structure, in particular to a film layer structure applied to optical elements such as optical filters and lenses. 【Background technique】 [0002] At present, optical coatings have been widely used in projectors, traditional cameras, digital cameras, mobile phones, lens groups for astronomical telescopes, filters, etc., to enable these optical components to achieve different optical functions, such as: absorbing ultraviolet rays, Anti-reflection, color filter, infrared cut-off, etc. Taking the optical filter as an example, we will give a detailed introduction to the film layer structure and corresponding optical properties of the optical coating. The so-called optical filter is an optical element that uses the principle of light absorption or interference to obtain a limited wavelength range from polychromatic light. Commonly used filters are absorption filters and interference filters. Absorption filters are m...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): G02B1/10G02B5/20
Inventor 黄玟豪
Owner ASIA OPTICAL CO INC