A method for installing a flat film mirror

An installation method and thin-film mirror technology, which are applied in installation, optics, instruments, etc., can solve problems such as the installation method of precision thin-film mirrors, etc., so as to reduce the low precision of the surface shape, the weight of the supporting structure, and the precision of the surface shape Improved effect

Active Publication Date: 2017-01-18
BEIJING RES INST OF SPATIAL MECHANICAL & ELECTRICAL TECH
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Problems solved by technology

In recent years, many scientific research institutions and colleges at home and abroad have carried out related research on thin-film mirror technology, but still have not clearly proposed a method for installing precision thin-film mirrors.

Method used

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  • A method for installing a flat film mirror
  • A method for installing a flat film mirror
  • A method for installing a flat film mirror

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Embodiment

[0045] The surface shape index of the film mirror 1 depends on the surface shape accuracy of the film itself, the precision and rigidity of the precision support ring, and is also related to the internal stress of the film. Here, the surface accuracy of the film mirror 1 itself and the surface accuracy of the annulus 2-1 of the precision support ring 2 are limited, and it is guaranteed that this limitation is easy to realize in engineering, and the method of the present invention is premised on this Make an introduction.

[0046] Firstly, the parameters of the thin film mirror 1 are limited. In this embodiment, in order to meet the requirement that the optical diameter of the final formed thin film mirror assembly is Ф200 mm, the diameter of the thin film mirror itself is Ф250 mm, the thickness is 20 μm, and the surface shape accuracy is better than λ / 10 (λ = 0.632 μm).

[0047] Then limit the performance of the precision support ring 2, the inner diameter is Ф220mm, a certai...

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Abstract

A method of installing a flat film mirror. First, the circular film mirror is unfolded into a flat state, and a rectangular thin gasket with holes is evenly and firmly bonded around the film mirror through a special tooling, and the two ends of N ropes are respectively connected to the rectangular gasket. and tension sensors, fix the tension sensors around so that each rope is on the same plane. Then, place the precision support ring under the film mirror, lightly top the film mirror with a side with a ring-shaped step surface, and then install the pressure ring above the support ring, pre-tighten the pressure ring with screws but ensure that the film mirror can Move between the pressure ring and the support ring, apply tension on the outermost end of the rope around the film mirror, and the tension sensor will display the tension value, adjust the tension value and detect the shape of the film mirror in real time, and repeatedly adjust each tension value according to the measured surface shape to make the film The mirror shape is optimal. The invention realizes the installation of the high-precision flat film mirror through the support of the support ring and the coplanar tension adjustment of the edge of the film mirror, and can meet the use requirements of the high-precision optical system.

Description

technical field [0001] The invention relates to a method for installing a flat film mirror, which can be applied to the installation requirements of the film mirror of an imaging optical system. Background technique [0002] With the development of aerospace optical remote sensing technology, on the one hand, lightweight optical remote sensors are becoming a hot spot in the field of aerospace optical remote sensing in various countries; At present, in the field of aerospace optical remote sensing, rigid mirrors or lenses are mostly used. The materials are mostly glass-ceramics, ULE, and silicon carbide. Mirrors or lenses made of rigid materials are large in volume and weight. Moreover, limited by the molding process of the rigid mirror body, it is very difficult to develop and process a mirror body with a diameter greater than 5m. The above factors make it difficult for rigid mirrors to meet the development needs of large diameter, low weight, and low cost remote sensors in ...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): G02B7/188
CPCG02B26/0825
Inventor 金建高苏云阮宁娟郭崇岭
Owner BEIJING RES INST OF SPATIAL MECHANICAL & ELECTRICAL TECH
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