Dodging rod fixing device

Abstract

A dodging rod fixing device comprises a fixing assembly and an adjusting and supporting assembly. The fixing assembly is used for directly fixing a dodging rod and comprises a base body and a first fastening assembly, a fastening counter bore is formed in one end of the base body, a rectangular light-in positioning through hole leading to the fastening counter bore is formed in the other end of the base body, the dodging rod is arranged in the base body from the rectangular light-in positioning through hole and penetrates through the fastening counter bore, and the first fastening assembly isinstalled in the fastening counter bore so as to fix the dodging rod. The adjusting and supporting assembly is used for supporting and fixing the fixing assembly and comprises a supporting base body and a second fastening assembly, a supporting and positioning stepped hole is formed in the supporting base body and comprises a supporting stepped hole body and a light emitting positioning through hole, and the base body is arranged in the supporting stepped hole body; the light emitting surface of the dodging rod is located in the light emitting positioning through hole or penetrates through thelight emitting positioning through hole, and the second fastening assembly compresses the base body. The dodging rod fixing device has the beneficial effects that the dodging rod can be in full contact with air, and the center of the dodging rod is prevented from deviating.

Description

technical field [0001] The invention belongs to the technical field of exposure and projection, and in particular relates to a uniform light rod fixing device. Background technique [0002] In exposure and projection technology, the outgoing light generated by the light source is generally not uniform enough to meet the requirements of high-quality imaging. Therefore, a dodging rod is usually added on the propagation path of the outgoing light of the light source to dodge it, and then enter the subsequent optical elements. The uniform light treatment mainly uses the principle of total reflection of light. The light is reflected multiple times in the uniform light rod to form a two-dimensional virtual light source matrix, so that the light passing through it can achieve a uniform effect at the exit. [0003] In practical applications, the dodging rod is mostly a rectangular parallelepiped glass device, which is small in size and easily broken. The installation and fixing met...

AI Technical Summary

Problems solved by technology

[0004] There are two main installation methods at present. One is that the dodging rod is directly in rigid contact with the fixing device. In order to ensure its center alignment, the contact area between the dodging rod and the fixing device is relatively large, and its side cannot be contacted as much as possible. Into the air, resulting in poor uniformity, large area of ​​rigid contact is also prone to greater stress caused by temperature and damage to the uniform rod; the other method mainly uses a long soft support, long-term laser irradiation will accelerate With the aging of the soft support, the fixing effect is greatly weakened, and the center of the light-incoming surface and the light-emitting surface cannot be guaranteed to remain stable. If the center position deviates greatly, it will cause a large loss of light energy

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