Oscillation device

Abstract

The invention relates to a swinging apparatus mounting in an optical lens group shell comprises two magnetic unit arranged in parallel; a lightproof unit arranged in the shell; a driving loop arranged in the lightproof unit and generates magnetic field with the magnetic unit in turns to drive the lightproof unit swinging between an opening position and the lightproof position; and a locating component comprising a fixing element, an electromagnetism element, a stopping element and an elastic element. When the current is through the electromagnetism element, the electromagnetism element attracts the fixing element to the pawl-dispelling position to enable the elastic element generating a restoring force through compressed by the stopping element; when the current is not through the electromagnetism element, the fixing element is moved to the pawl-blocking position driven by the restoring force to pawl-block the lightproof unit at the stopping position. The fixing element of the locating component in the invention can locate the lightproof at the stopping position steadily, moreover, the qualm of the optical lens internals attainting because of the lightproof unit position badness of the habitually using structure.

Description

technical field [0001] The present invention relates to an oscillating device, in particular to an optical device capable of effectively fixing the shielding unit when the drive circuit is not in action, and avoiding the fear of damage to other components inside the optical lens group due to poor positioning of the light shielding unit in the existing conventional structure. Swing device for lens group. Background technique [0002] Due to the multiple requirements of large display area, miniaturization, and lightweight systems, image projection systems have become one of the most popular projects in the optoelectronic industry. [0003] Today, projection systems can be divided into three major categories based on projection principles, which are liquid crystal (liquid crystal display, LCD) projection systems, liquid crystal silicon (liquid crystal silicon, LCOS) projection systems, and digital light source processors. (digital lightprocessing, DLP) projection system. Amon...

AI Technical Summary

Problems solved by technology

[0006] However, after a period of use, the elastic unit 24 may become fatigued, so that the shading unit 22 cannot be positioned firmly, so that when the optical lens group 15 is moved, the shading unit 22 is easy to shake, causing damage to the inside of the optical lens group 15. Damage to other components

[0007] This shows that above-mentioned existing swing device obviously still has inconvenience and defect in structure and use, and urgently needs to be further improved

In order to solve the above-mentioned problems, the relevant manufacturers have tried their best to find a solution, but no suitable design has been developed for a long time, and the general products do not have an appropriate structure to solve the above-mentioned problems. This is obviously related. The problem that the industry is eager to solve

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