Reflecting mirror and preparation method thereof

A mirror and glass plate technology, applied in the field of optics, can solve the problems of easy deformation of components, increase in the weight of mirrors, and reduce reflective components, and achieve the effects of extending service life, high lightweight rate, and good thermal stability.

Inactive Publication Date: 2016-11-23
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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  • Reflecting mirror and preparation method thereof
  • Reflecting mirror and preparation method thereof
  • Reflecting mirror and preparation method thereof

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0050] A method for preparing a reflecting mirror, comprising the steps of:

[0051] Material preparation: select the expansion coefficient as 5×10 -9 Quartz glass at / ℃ is used as the blank, with a diameter of 1200mm;

[0052] Preparation of lightweight structural layer: the blank is processed by numerical control to obtain the first glass plate with a support frame, specifically cutting or milling with a diamond tool according to the set shape, and the feed rate is 0.1 mm. The support frame and the first glass plate form a groove of a preset shape, the preset shape is a pentagon, and the grooves are connected to each other by punching holes in the groove wall; the thickness of the first glass plate is 20mm , the thickness of the support frame is 60mm, and the first glass plate is aspherical;

[0053] Preparation of the second glass plate: the blank is cold-processed to obtain a planar second glass plate, specifically, the quartz glass plate is cut in layers by means of mi...

Embodiment 2

[0057] A method for preparing a reflecting mirror, comprising the steps of:

[0058] Material preparation: select the expansion coefficient as 5×10 -7 Quartz glass at / ℃ is used as the blank, with a diameter of 500mm;

[0059] Preparation of the lightweight structural layer: cold processing the blank to obtain the first glass plate with a support frame, specifically cutting or milling with a diamond tool according to the set shape, and the cutting amount is 0.2 mm. The support frame and the first glass plate form a groove of a preset shape, the preset shape is a triangle, and the grooves are connected to each other by punching holes in the groove wall; the thickness of the first glass plate is 15 mm, and the supporting The frame thickness is 50mm, and the first glass plate is flat;

[0060] Preparation of the second glass plate: the blank is cold processed, specifically, the quartz glass plate is obtained by cutting the quartz glass plate in layers with a diamond grinding wh...

Embodiment 3

[0064] A method for preparing a reflecting mirror, comprising the steps of:

[0065] Material preparation: select the expansion coefficient as 1×10 -7 Quartz glass at / ℃ is used as the blank, with a diameter of 1000mm;

[0066] Preparation of a lightweight structural layer: cold processing the blank to obtain the first glass plate with a support frame, specifically cutting or milling with a diamond tool according to the set shape, with a feed rate of 0.3mm. The support frame and the first glass plate form a groove of a preset shape, the preset shape is fan-shaped; the thickness of the first glass plate is 28mm, the thickness of the support frame is 80mm, and the first glass plate is spherical;

[0067] Preparation of 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 a layered manner with a diamond grinding wheel by means of milling and g...

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Abstract

The invention discloses a reflecting mirror and a preparation method thereof. The reflecting mirror comprises the following steps: preparing a light-weight structural layer: carrying out cold machining on a blank so as to obtain a first glass plate with a support frame, wherein a groove with a preset shape is formed by the surrounding of the support frame and the first glass plate, and the preset shape is triangle, quadrangle, pentagon, hexagon, sector or round; preparing a second glass plate; preparing a reflection mirror blank: coating a weld surface of the second glass plate with a welding object, wherein the welding object is an aluminum-containing silicon type sheet-shaped or powdery material, and the expansion coefficient is less than or equal to 5*10<7>/DEG C; welding a welding surface of the second glass plate with a welding surface of the support frame, so as to obtain the reflection mirror blank; and carrying out shaping, frosting and polishing on the reflection mirror blank, so as to obtain the reflecting mirror. The reflecting mirror prepared by virtue of the preparation method has the advantages of high light-weight rate and firm structure.

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): G02B5/08C03C27/10
CPCG02B5/08C03C27/10
Inventor 邵竹锋向在奎饶传东符博王佳佳隋梅王玉芬
Owner CHINA BUILDING MATERIALS ACAD
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