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A method for fixing a Wollaston prism

A Wollaston prism and mirror holder technology, applied in installation, instruments, optics, etc., can solve problems such as inappropriate thermal expansion coefficient, damage to lenses, and inappropriate orientation of bonding points, and achieve the effect of reducing stress damage to lenses

Active Publication Date: 2021-01-26
HEFEI INSTITUTES OF PHYSICAL SCIENCE - CHINESE ACAD OF SCI
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  • Abstract
  • Description
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Problems solved by technology

Therefore, for the mounting of the Wollaston prism, if the thermal expansion coefficient of the selected lens holder material is not suitable, or the direction of the selected bonding point is not suitable, there will be differential expansion between the lens and the lens holder under high and low temperature conditions. Or the problem of destroying the lens due to the stress caused by shrinkage

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  • A method for fixing a Wollaston prism
  • A method for fixing a Wollaston prism
  • A method for fixing a Wollaston prism

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Embodiment Construction

[0028] The embodiments of the present invention are described in detail below. This embodiment is implemented on the premise of the technical solution of the present invention, and detailed implementation methods and specific operating procedures are provided, but the protection scope of the present invention is not limited to the following implementation example.

[0029] This embodiment discloses a method for fixing a Wollaston prism, such as figure 1 As shown, the Wollaston prism is a cuboid structure made of two pieces of calcite glued together; on the two pieces of calcite, the four faces adjacent to the glued interface of the two pieces of calcite are fixed surfaces, and the other two are located on the two sides respectively. The planes parallel to each other on a piece of calcite are respectively the light incident surface and the light exit surface; among the four fixed surfaces of each calcite, two of them are rectangular fixed surfaces and two are trapezoidal fixed ...

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Abstract

The invention discloses a method for fixing a Wollaston prism. According to the directionality of the thermal expansion coefficient of the Wollaston prism, the material of the mirror seat and the bonding point between the Wollaston prism and the mirror seat are selected, Carry out glue filling again. The invention solves the problem that the optical lens with different thermal expansion coefficients in different directions will be damaged by stress caused by differential expansion or contraction between the lens and the lens holder under high and low temperature conditions.

Description

technical field [0001] The invention belongs to the technical field of optical lens assembly, and in particular relates to a method for fixing a Wollaston prism. Background technique [0002] When designing optical lenses for optical instruments used in space environments, it is necessary to consider the stress problem at the bonding point between the lens and the metal mirror base on which it is installed. At present, there are mainly three stress sources that have been studied more, namely, the shrinkage of the adhesive during the curing process, the acceleration external force pulling the lens away from the lens holder, and the differential expansion and contraction under high and low temperature conditions. For the first type of stress, it is mainly reduced by selecting an adhesive with a small shrinkage rate. The second type of stress is ubiquitous in the presence of acceleration, but for a lens with a small mass, it is of a small magnitude compared with the other two ...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): G02B7/18
Inventor 凌明椿崔卫华宋茂新洪津
Owner HEFEI INSTITUTES OF PHYSICAL SCIENCE - CHINESE ACAD OF SCI