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Depolarization pentagonal prism and manufacturing method thereof

A pentagonal prism and depolarization technology, applied in prisms and other directions, can solve the problems of difficult design and production control, poor repeatability and stability, and poor depolarization effect, so as to reduce the difficulty of design and production control, Good depolarization effect and life-enhancing effect

Active Publication Date: 2016-06-29
SANMING FOCTEK PHOTONICS INC
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0003] In order to overcome the disadvantages of poor depolarization effect, short service life, difficult design and production control, poor matching with glue, poor repeatability and stability of existing metal depolarization films commonly used for depolarization of pentagonal prisms, The invention provides a depolarizing pentagonal prism and a manufacturing method thereof, which uses a multilayer dielectric optical film formed by overlapping high-refractive-index dielectric materials and low-refractive-index dielectric materials to replace the traditional metal depolarizing film, and has the advantages of depolarization Good effect, good matching with various glues, low difficulty in precise control of design and production, high repeatability and stability

Method used

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  • Depolarization pentagonal prism and manufacturing method thereof
  • Depolarization pentagonal prism and manufacturing method thereof

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Embodiment 1

[0033] Such as Figure 1-2 Shown, a kind of depolarization pentagonal prism of the present invention comprises pentagonal prism lens body 1 and angle-wedge sheet 2, and described pentagonal prism lens body 1 is through the longest oblique plane of angle-wedge sheet 2 by an inclined plane adjacent to right-angled surface Edge connection. Described pentagonal prism mirror body 1 and wedge angle sheet 2 adopt same substrate material, also be provided with depolarization medium thin film layer 4 and glue layer 3 between the joint surface of described pentagonal prism mirror body 1 and wedge angle sheet 2, depolarization The dielectric film layer 4 is plated on the pentaprism mirror body 1, and the glue layer 3 is glued between the depolarizing dielectric film layer 4 and the angle wedge sheet 2, and the depolarizing dielectric film layer 4 is made of a high refractive index medium Nb 2 o 5 layer and low-refractive-index dielectric SiO 2 A multi-layer dielectric film structure f...

Embodiment 2

[0041] It differs from Example 1 in that: the number of layers of the depolarizing medium film layer 4 is 29 layers, and each layer is in the order of 1.000H, 1.1338L, and 1.23H according to the order from near to far from the pentagonal prism body 1. , 1.5752L, 1.2721H, 1.1065L, 0.9383H, 0.9955L, 0.8955H, 0.9601L, 0.8379H, 0.8403L, 0.6624H, 0.6573L, 0.587H, 0.7079L, 0.7061H, 0.8478H, 0.82912 L, 0.8033H, 0.5246L, 2.2512H, 0.8212L, 0.836H, 0.7775L, 0.5054H, 0.4454L, 0.6143H, where the value +H represents Nb corresponding to the optical thickness of 1 / 4 wavelength 2 o 5 layer, the value +L represents SiO corresponding to the optical thickness of 1 / 4 wavelength 2 layer, the central wavelength of the depolarizing medium film layer 4 is 590nm.

[0042] In the manufacturing method of the depolarizing pentagonal prism in this embodiment, the coating machine is controlled by a crystal oscillator when the 8th, 22nd, 27-29th layers of the depolarizing dielectric film layer 4 are plate...

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Abstract

The invention relates to a depolarization pentagonal prism which comprises a pentagonal prism body and a wedge corner piece.The oblique face, adjacent to the right-angle face, of the pentagonal prism body is connected with the longest oblique side of the wedge corner piece in a face mode.The pentagonal prism body and the wedge corner piece are made of the same substrate material.A depolarization medium thin film layer and a glue layer are arranged between the combining faces of the pentagonal prism body and the wedge corner piece.The pentagonal prism body is plated with the depolarization medium thin film layer.The glue layer is glued between the depolarization medium thin film layer and the wedge corner piece.The defects that a metal depolarization thin film frequently used for depolarization of an existing pentagonal prism is not excellent in depolarization effect, not long in service life, large in design and production control difficulty, poor in matching degree with glue, and not high in repeatability and stability are overcome, and the depolarization pentagonal prism has the advantages of being good in depolarization effect, good in matching degree with various types of glue, low in design and production precision control difficulty and high in repeatability and stability.

Description

technical field [0001] The invention relates to a depolarizing pentagonal prism and a manufacturing method thereof, which are applied in the field of manufacturing pentagonal prisms. Background technique [0002] A pentagonal prism refers to a prism in which the angle between two reflective surfaces is 45°, and the incident light is accurately reflected at 90°. It is one of the beam deflectors with fixed angles. The pentagonal prism is different from the right-angle prism, and the image formed has neither rotation nor specular reflection. This feature can be used to measure the planarity of a large plane, that is, the outgoing light when the pentagonal prism is rotated around the horizontal axis is swept out in the vertical plane. A plane, and vice versa, rotated around a vertical axis, can measure planarity in a horizontal plane. At present, penta prisms are widely used in levels and rangefinders, and can also be used in SLR cameras. When the light is obliquely incident o...

Claims

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Application Information

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IPC IPC(8): G02B5/04
CPCG02B5/04
Inventor 吴小春
Owner SANMING FOCTEK PHOTONICS INC
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