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Light filter

A filter device and membrane stack technology, which is applied in the direction of optical filters, optics, optical components, etc., can solve the problems of inability to efficiently cut off infrared rays, and achieve the effect of reducing reflection and increasing transmittance

Inactive Publication Date: 2007-01-17
HONG FU JIN PRECISION IND (SHENZHEN) CO LTD +1
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  • Abstract
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  • Claims
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Problems solved by technology

However, the design of the windshield does not involve the cut-off of ultraviolet rays, and mainly uses reflection to eliminate infrared rays, and cannot effectively cut off infrared rays in each band.

Method used

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Embodiment Construction

[0029] The optical filter device and its manufacturing method will be further described in detail below with reference to the accompanying drawings and several embodiments.

[0030] Such as figure 1 As shown, the filter device of the first embodiment of the technical solution is a filter glass 1 for automobiles, which has a base 10, the base 10 includes an inner side 11 and an outer side 12, and a UV filter film stack 20 is disposed on the inner side 11 , and an infrared filter membrane stack 30 is disposed on the outer side 12 . The ultraviolet filter film stack 20 and the infrared filter film stack 30 are formed by alternating high refractive index material film layers and low refractive index material film layers. The high refractive index materials include titanium dioxide (TiO 2 ), titanium pentoxide (Ti 3 o 5 ), tantalum oxide (Ta 2 o 5 ), etc., low refractive index materials include silicon dioxide (SiO 2 ), alumina (Al 2 o 3 )Wait. The substrate 10 is a trans...

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Abstract

This invention relates to a light-filtering device , it includes one base, one filtering ultraviolet ray film stack and once filtering infrared ray film stack, the filtering ultraviolet ray film stack and filtering infrared ray film stack are set respectively in the two relative surfaces of the base, the filtering ultraviolet ray film stack includes several the first light-filtering cavity and several the second light-filtering cavity which are piled up in the surface of the base in proper order, filtering infrared ray film stack includes several the third light-filtering cavity , several the fourth light-filtering cavity and several the fifth light-filtering cavity which are piled up in the surface of the base in proper order, the five light-filtering cavity is piled up alternately with high and low refraction material, and the thickness of the high and low refraction material in the five light-filtering cavity are gained by optimizing the corresponding criterion thickness modulus, the criterion thickness modulus of the high and low refraction material in the said first, second, third, fourth, fifth light-filtering cavity is 1 , 0.76 1 , 1.3 and 1 in turn.

Description

【Technical field】 [0001] The invention relates to a filter device, in particular to a filter device capable of filtering ultraviolet and infrared light and allowing visible light to pass through. 【Background technique】 [0002] The glass used in automobiles and airplanes is usually made of a substrate with a filter function, or a layer of filter film is formed on a common substrate, which can eliminate unnecessary light and reduce the energy of ultraviolet and infrared rays entering the car, thereby Avoid ultraviolet rays from damaging the human body and components inside the car, and prevent infrared radiation from causing the temperature inside the car to rise and burn the human body and components inside the car. [0003] In order to make the glass of automobiles and airplanes have a certain cut-off effect on ultraviolet rays and infrared rays, it is usually achieved in two ways. One way is to add some absorbers to the glass material to block unwanted light and allow vis...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): G02B1/10G02B5/20G02B1/11
Inventor 陈杰良张庆州
Owner HONG FU JIN PRECISION IND (SHENZHEN) CO LTD
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