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Coated lens, optical lens and method of forming coated lens

A technology of coated lenses and optical lenses, which is applied in optics, optical components, instruments, etc., can solve the problems of low reflectivity in the visible light region, inability to apply sensors that receive near-infrared light, and increased reflectivity, so as to achieve good transmission effect and realize The effect of the anti-reflection effect

Pending Publication Date: 2019-09-06
ZHEJIANG SUNNY OPTICAL CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

However, generally existing anti-reflection coatings have low reflectivity in the visible light region, but for the near-infrared region, the reflectivity increases with the increase of the wavelength, so they cannot be applied to sensors that receive near-infrared light

Method used

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  • Coated lens, optical lens and method of forming coated lens
  • Coated lens, optical lens and method of forming coated lens
  • Coated lens, optical lens and method of forming coated lens

Examples

Experimental program
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Embodiment 1

[0066] figure 1 It is a schematic diagram of the film layer structure of the coated lens according to the first embodiment of the present application. Such as figure 1 As shown, the coated lens provided by the embodiment of the present application includes a lens substrate 100 and a seven-layer film structure. The seven-layer film structure is described in detail below. The first layer from the side of the lens base is a medium refractive index film layer 201, the second layer is a high refractive index film layer 202 of the first film group, and the third layer is a low refractive index film layer 203 of the first film group, The fourth layer is the second high refractive index film layer 204, the fifth layer is the second low refractive index film layer 205, the sixth layer is the third high refractive index film layer 206, and the seventh layer is the third low refractive index film layer 207. The material of each high refractive index film layer is Ti 3 o 5 , the mat...

Embodiment 2

[0069] image 3 It is a schematic diagram of the film layer structure of the coated lens according to the second embodiment of the present application. Such as image 3 As shown, the coated lens provided by the embodiment of the present application includes a lens substrate 100 and a seven-layer film structure. The seven-layer film structure is described in detail below. The first layer from the side of the lens base is a medium refractive index film layer 201, the second layer is a high refractive index film layer 202 of the first film group, and the third layer is a low refractive index film layer 203 of the first film group, The fourth layer is the second high refractive index film layer 204, the fifth layer is the second low refractive index film layer 205, the sixth layer is the third high refractive index film layer 206, and the seventh layer is the third low refractive index film layer 207. The material of each high refractive index film layer is Ti 3 o 5 , the ma...

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Abstract

The invention discloses a coated lens, an optical lens and a method of forming the coated lens. The coated lens comprises a lens substrate, a first film group and a second film group, wherein the first film group is plated on the side surface of the lens substrate, and comprises a medium refractive index film layer and at least one of a high refractive index film layer and a low refractive index film layer; and the second film group comprises high refractive index film layers and low refractive index film layers which are laminated and plated on the first film group in an alternating manner, wherein a ratio D<Htotal> / D<Mtotal> of the total film layer thickness D<Htotal> of the high refractive index film layer in the first film group and the high refractive index film layers in the second film group to the total thickness D<Mtotal> of the medium refractive index film layer satisfies a condition that the D<Htotal> / D<Mtotal> is greater than or equal to 1and less than or equal to 3.

Description

technical field [0001] The present application relates to the technical field of optical elements, in particular to a coated lens, an optical lens and a method for forming a coated lens. Background technique [0002] In the field of cameras, 3D cameras have a good application prospect. It uses infrared rays as the emitted light, which can solve the problem of environmental light influence of visible light. There are currently three mainstream 3D vision technologies used in the industry: structured light technology, time-of-flight (TOF) and binocular multi-angle stereoscopic imaging. The TOF solution is the most promising because of its advantages of convenient use and low cost. Among them, the TOF solution uses a dedicated sensor to capture the flight time of near-infrared light from emission to reception, thereby judging the distance of the object. Such sensors are generally near-infrared sensors, which need to receive and transmit near-infrared light. [0003] In order...

Claims

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Application Information

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IPC IPC(8): G02B1/115G02B13/00G02B13/14
CPCG02B1/115G02B13/0015G02B13/008G02B13/14
Inventor 余荣军蒯泽文尚达强赵绚
Owner ZHEJIANG SUNNY OPTICAL CO LTD