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Double-film PC (Polycarbonate) lens for optical display and preparation method thereof

An optical display and lens technology, applied in chemical instruments and methods, optics, optical components, etc., can solve the problem of late start of thin film materials, and achieve the effect of reducing secondary reflection and enhancing visual effects.

Active Publication Date: 2015-02-18
NANJING TECH UNIV
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

In China, thin film materials started relatively late, and there are relatively few related researches on PC surface coating by vacuum coating, but related research work is also actively carried out.
Zhang Qitu et al. (Composite multi-band laser protection PC material [J]. Laser and Infrared, 2008, 38(5): 421-423.) developed a composite PC coating material with specific visible light band absorption characteristics for laser protection , but there is no relevant information on coating reflective film on the lens of PC display in related fields in China

Method used

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  • Double-film PC (Polycarbonate) lens for optical display and preparation method thereof
  • Double-film PC (Polycarbonate) lens for optical display and preparation method thereof
  • Double-film PC (Polycarbonate) lens for optical display and preparation method thereof

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0016] Based on PC, the reflective film adopts a film structure of (HL)^1H with a total of 3 layers. (Wherein, (HL)^1H means: the first layer of each cycle is a high refractive index material HfO with a thickness of 1 optical thickness 2 , the second layer is a low refractive material SiO with a thickness of 3 optical thicknesses 2 , a total of one period, and finally with H high refractive index material HfO 2 End; coating temperature is 50°C, coating pressure is 0.001MPa;

[0017] The anti-reflection coating adopts a film structure Sub|LHL| with a total of 3 layers. (Among them, Sub|LHL|A means: the first layer of each period is SiO with low refractive index 2 , the second layer is high refractive material HfO 2 , and finally with L low refractive index material SiO 2 End; coating temperature is 50°C, coating pressure is 0.002MPa;

[0018] Table 1 The refractive index and thickness of each layer of the three-layer reflective film

[0019]

[0020] Only the reflecti...

Embodiment 2

[0026] Based on PC, the reflective film adopts a film structure of (HL)^2H with a total of 5 layers. The coating temperature is 80°C, and the coating pressure is 0.003MPa;

[0027] The AR coating adopts a film structure Sub|LHLHLHL|A with a total of 7 layers; the coating temperature is 50°C, and the coating pressure is 0.003MPa;

[0028] Table 3 Refractive index and thickness of each film layer of five-layer film

[0029]

[0030] Only the reflection spectrum of the PC lens concave surface coated with reflective film was tested, and the highest reflectance of the reflection curve of the PC coated reflective film reached about 72%.

[0031] Table 4 Refractive index and thickness of each layer of seven-layer AR coating

[0032]

[0033] Only the reflection spectrum of the anti-reflection coating on the convex surface of the PC lens was tested. The highest reflectance of the reflection curve of the anti-reflection coating before and after PC coating does not exceed 1%, an...

Embodiment 3

[0036] With PC as the substrate, the reflective film adopts a film structure of (HL)^5H with a total of 11 layers; the coating temperature is 80°C, and the coating pressure is 0.001MPa;

[0037] The anti-reflection coating adopts a film structure Sub|LHL|A with a total of 3 layers; the coating temperature is 80°C, and the coating pressure is 0.001MPa;

[0038] Table 5 Refractive index and thickness of each film layer of seven-layer film

[0039]

[0040] Only the reflection spectrum of the anti-reflection coating on the convex surface of the PC lens was tested, and the highest reflectance of the reflection curve of the reflection film after PC coating reached about 85%.

[0041] Table 6 The refractive index and thickness of each layer of the three-layer AR coating

[0042]

[0043] Only the reflection spectrum of the anti-reflection coating on the convex surface of the PC lens was tested. The highest reflectance of the reflection curve of the anti-reflection coating befor...

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Abstract

The invention relates to a double-film PC (Polycarbonate) lens for optical display and a preparation method thereof. The double-film PC lens is characterized by comprising three layers of a reflection film, a PC substrate and an antireflection film, wherein the PC substrate is an arc lens; PC|(HL)nH| is used as a basic film system plated with the reflection film, the reflection film is deposited on a concave side of the PC lens and is 300-2000nm thick; and PC|(LH)mL| or PC|(LH)m| is used as the basic film system plated with the antireflection film, the antireflection film is deposited on a convex side of the PC lens and is 300-2000nm thick. The PC lens for optical display comprises two sides composed of the concave side and the convex side; the reflection side plated on the concave side can reflect most visible light, and the antireflection film on the convex side can transmit un-reflected visible light outwards better so as to reduce secondary reflection to the greatest extent and reinforce the visible effect of the PC lens.

Description

technical field [0001] The invention belongs to the technical field of optical thin film materials, and relates to a double-film PC lens for optical display and a preparation method thereof. Background technique [0002] The task of display technology is to use appropriate methods to change the intensity of light, the wavelength of light (ie color) and other characteristics of light according to the psychological and physiological characteristics of people to form different forms of visual information. In terms of military use, the head-up display is a kind of flight auxiliary display instrument commonly used on aircraft. The working principle of the head-up display is closely related to the film on the surface of the display. Foreign countries have not stopped research on the head-up display. The purpose is to develop a display with higher clarity, reliability and resolution, longer life, and higher cost performance. Coating on the display can improve the visual performanc...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): G02B1/10G02B1/11B32B27/36B32B9/04G02B1/115
Inventor 张其土徐亮王丽熙张乐
Owner NANJING TECH UNIV
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