Method for segmented manufacturing of super-large aperture Fresnel lens

A Fresnel lens and ultra-large-diameter technology, which is applied in the field of segmented production of super-large-diameter Fresnel lenses, can solve the problems of huge manufacturing costs, limited size of Fresnel lenses, and inability to manufacture large sizes, so as to achieve diversified applications, The effect of guaranteeing accuracy

Inactive Publication Date: 2017-08-04
CHENGDU FSCREEN SCI TECH
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  • Application Information

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Problems solved by technology

[0003] The 500-meter-diameter radio telescope made in China undoubtedly marks that my country is already in the forefront of the world in the manufacturing technology of large telescopes. However, the multi-prism splicing technology it uses is very important for the manufacture of each single prism and the splicing of multiple prisms. worldwide problem
In the manufacturing process, the requirements for prism manufacturing accuracy and splicing accuracy are very high, and the manufacturing cost is also huge, which restricts the development of the application field
This patent proposes a method for producing Fresnel lenses based on tapered rollers. On the one hand, it ca

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  • Method for segmented manufacturing of super-large aperture Fresnel lens
  • Method for segmented manufacturing of super-large aperture Fresnel lens
  • Method for segmented manufacturing of super-large aperture Fresnel lens

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Embodiment 1

[0041] Example 1 Design and manufacture of a 20-meter-diameter spliced ​​Filipino mirror:

[0042] The center of the Philippine mirror is a complete circular Philippine mirror. The selected radius of the design is 500 mm, that is, the diameter is 1 meter; it can also be manufactured by splicing. The other parts of the Philippine mirror are spliced ​​by multiple pieces, and the spliced ​​Philippine mirror is composed of multiple ring belts and multiple splicing bodies in the ring belt. Each splice has the same optical parameters or different optical parameters, and the same size or different sizes.

[0043] The width of each annular belt and the quantity and size of splices in the annular belt are designed according to the principle of being conducive to manufacture. In this example, a ring of equal width is used, and the width of the ring is 1900mm according to the equipment opening that can process a tapered Fresnel lens; rings of unequal width can also be used.

[0044] Th...

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Abstract

The invention discloses a method for segmentally manufacturing a super-large diameter Fresnel lens and relates to the field of Fresnel lens manufacturing and processing. Specifically include the following steps: determine the caliber of the super-large-diameter Fresnel lens; divide the super-large-diameter Fresnel lens to be produced into several rings; determine the number of splices on each ring; The size of the large end of the roller and the position of the ring belt; determine the taper and size of the tapered roller; use the tapered roller to manufacture partial Fresnel lenses, that is, each splicing body; the partial Fresnel lens is the splicing body; splicing into a complete Fresnel lens. The invention can manufacture large-size and super-large-size Fresnel lenses, and ensures the precision of fine structure forming.

Description

technical field [0001] The invention relates to the field of Fresnel lens manufacturing and processing, in particular to a method for segmentally manufacturing super-large-diameter Fresnel lenses. Background technique [0002] Fresnel lens is an annular optical lens invented by a French physicist. With the advancement of technology, the demand for product size is increasing, and the application field is becoming more and more extensive. Especially in laser TV screens, solar photovoltaic photothermal applications, laser engineering applications and other major aspects. Lenses are made bigger and bigger. The manufacture of large aperture lenses has always been a worldwide problem. This patent is an expansion of technological innovation based on the invention patent of the independent patent ZL201410170440.1 "Tapered Roller for Making Fresnel Lenses", which can manufacture larger-sized Fresnel lenses. [0003] The 500-meter-diameter radio telescope made in China undoubtedly ...

Claims

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Application Information

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IPC IPC(8): G02B3/08
CPCG02B3/08
Inventor 张益民吴庆富张睿丰
Owner CHENGDU FSCREEN SCI TECH
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