A uniform light rod fixing device

Abstract

The invention discloses a fixing device for a light-equalizing rod and belongs to the technical field of a direct writing exposure machine. The fixing device for the light-equalizing rod comprises a soft support with a through hole; the hardness of the soft support is shore hardness 50-80; the through hole in whole or local length along an axial direction is arranged as a cylindrical contact support hole; and the aperture of the contact support hole is less than the diameter of a circumscribed circle of the cross section of the fixed and mounted light-equalizing rod. The fixing device can solve the problems of low light transmission and poor optical uniformity caused by the easiness in leaking light in the fixing and mounting processes of the light-equalizing rod and the problem of easiness in damaging the light-equalizing rod in a rigid mounting process in the prior art.

Description

Technical field [0001] The invention relates to a homogenizing rod fixing device, which belongs to the technical field of direct writing exposure machines. Background technique [0002] The homogenizing rod is an optical glass device with a rectangular cross-section. Its function is to use the principle of total reflection of light. After multiple reflections in the light rod, each reflection will form a virtual light source image, and multiple reflections will form a two-dimensional virtual The light source matrix makes the light more uniform, so that the light passing through itself can achieve the uniform effect at the exit. [0003] The homogenization rod is a small, fragile glass device, and due to the limitation of its working principle, it is required to contact the air as much as possible on the side during work to obtain the maximum light transmission rate. Therefore, the installation of the homogenization rod There are specific requirements for the fixation, which not on...

AI Technical Summary

Problems solved by technology

[0004] The installation method of the dodging rod in the prior art is mostly fixed by screw pressure blocks, and the contact surface between the fixing device and the dodging rod is relatively large. Total reflection cannot be formed on the contact surface, which not only affects the light uniformity effect, but also causes light energy loss; the fixture and the light uniform rod are in rigid contact. , the temperature will change to a large extent. In the case of thermal expansion and cold contraction, there will be a lot of stress between the fixing device and the dodging rod, which will easily cause damage to the dodging rod; the screw installation torque is not easy to control , it is easy to cause damage to the dodging rod, and the dodging effect will fail

Images