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Reflector and preparation method thereof

A mirror and glass plate technology, applied in the optical field, can solve the problems of increasing the cost and difficulty of aerial detection, being unable to bear its own weight, reducing reflective components, etc., and achieving the effect of high lightweight rate, high strength, and weight reduction

Inactive Publication Date: 2017-02-01
CHINA BUILDING MATERIALS ACAD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0003] In order to ensure that the reflector has an appropriate aspect ratio (otherwise it may cause the components to be easily deformed), the thickness of the reflector should be increased while increasing the caliber of the reflector. However, this will greatly increase the weight of the reflector and cannot It bears its own weight, and it will also increase the cost and difficulty of aerial detection. It is urgent to reduce the weight of reflective components

Method used

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  • Reflector and preparation method thereof
  • Reflector and preparation method thereof
  • Reflector and preparation method thereof

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0047] A method for preparing a reflecting mirror, comprising the steps of:

[0048] Material preparation: select the expansion coefficient as 5×10 -9 Quartz glass at / ℃ is used as the blank, with a diameter of 1200mm;

[0049] Preparation of the first glass plate and the second glass plate: the blank is subjected to cold processing to obtain a planar second glass plate, specifically, the quartz glass plate is obtained by cutting the quartz glass plate in layers with a diamond grinding wheel by means of milling, and the cutting amount is 2mm, the thickness of the first glass plate is 18mm, and the first glass plate is aspherical; the thickness of the second glass plate is 20mm, and the shape is planar;

[0050] Preparation of lightweight interlayer: the blank is processed by numerical control to obtain a lightweight interlayer with weight-reducing holes. Specifically, diamond tools are used to cut or mill according to the set shape, and the feed rate is 0.1mm . The shape of t...

Embodiment 2

[0054] A method for preparing a reflecting mirror, comprising the steps of:

[0055] Material preparation: select the expansion coefficient as 5×10 -7 Quartz glass at / ℃ is used as the blank, with a diameter of 500mm;

[0056] Preparation of the first glass plate and the second glass plate: the blank is subjected to cold processing to obtain a planar second glass plate, specifically, the quartz glass plate is obtained by cutting the quartz glass plate in layers with a diamond grinding wheel by means of milling, and the cutting amount is 2mm, the thickness of the first glass plate is 8mm, and the first glass plate is spherical; the thickness of the second glass plate is 15mm, and the shape is planar;

[0057] Preparation of lightweight interlayer: the blank is processed by numerical control to obtain a lightweight interlayer with weight-reducing holes. Specifically, diamond tools are used to cut or mill according to the set shape, and the feed rate is 0.1mm . The shape of th...

Embodiment 3

[0061] A method for preparing a reflecting mirror, comprising the steps of:

[0062] Material preparation: select the expansion coefficient as 1×10 -7 Quartz glass at / ℃ is used as the blank, with a diameter of 1000mm;

[0063] Preparation of the first glass plate and the second glass plate: the blank is subjected to cold processing to obtain a planar second glass plate, specifically, the quartz glass plate is obtained by cutting the quartz glass plate in layers with a diamond grinding wheel by means of milling, and the cutting amount is 2mm, the thickness of the first glass plate is 15mm, and the first glass plate is planar; the thickness of the second glass plate is 22mm, and the shape is spherical;

[0064] Preparation of lightweight interlayer: the blank is processed by numerical control to obtain a lightweight interlayer with weight-reducing holes. Specifically, diamond tools are used to cut or mill according to the set shape, and the feed rate is 0.1mm . The shape of ...

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Abstract

The invention discloses a reflector and a preparation method thereof, and belongs to the optical field. The preparation method comprises the following steps: material preparation: selecting quartz glass, of which the expansion coefficient is 5*10<-7> / DEG C or the expansion coefficient is equal to or smaller than 1*10<-7> / DEG C, as a blank material; preparation of a first glass plate, a second glass plate and a lightweight interlayer: carrying out cold processing on the blank material to obtain the first glass plate and the second glass plate in preset shapes; preparation of the lightweight interlayer: carrying out cold processing on the blank material to obtain a glass plate having lightening holes in preset shape; preparation of a reflector blank: stacking up the first glass plate, the lightweight interlayer and the second glass plate in sequence and carrying out sintering, then, carrying out heat preservation annealing treatment, and finally, reducing the temperature to the room temperature and obtaining the reflector blank; and carrying out shaping, frosting and polishing processing on the reflector blank to obtain a reflector. The reflector prepared by the preparation method above is high in lightweight rate and long in service life.

Description

technical field [0001] The invention relates to the field of optics, in particular to a mirror and a preparation method thereof. Background technique [0002] In today's society, with the rapid development of space science, astronomical research, cosmic exploration, earth information and environmental information and other fields, high-resolution imaging quality requires optical systems to have larger and larger apertures. [0003] In order to ensure that the mirror has an appropriate aspect ratio (otherwise it may cause the components to be easily deformed), the thickness of the mirror should be increased while increasing the diameter of the mirror. However, this will greatly increase the weight of the mirror and cannot Bearing its own weight, and will also increase the cost and difficulty of aerial detection, it is urgent to reduce the weight of reflective components. Contents of the invention [0004] The object of the present invention is to provide a method for prepa...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): G02B5/08
CPCG02B5/08
Inventor 邵竹锋向在奎饶传东符博贾亚男王佳佳隋梅王玉芬
Owner CHINA BUILDING MATERIALS ACAD
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