Adjustable Optical Module Pivot Shaft Radial Stability
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Solution Overview
Problem
In existing adjustable optical modules, the gap between the pivot shaft and pivot hole leads to displacement of the optical element carrier relative to the frame during vibration or drop tests, causing optical variations.
Innovation Solution
The implementation of first and second positioning members that press against both ends of the pivot shafts and pivot holes, respectively, to maintain their positions and prevent radial movement, ensuring the pivot shafts do not move or shake within the pivot holes.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Ease of operation
If the pivot hole size is made larger than the pivot shaft size to enable insertion and rotation, then the ease of assembly and rotation is improved, but the gap between pivot shaft and pivot hole increases causing radial displacement during vibration or drop tests
Solution Approach 1:
The patent introduces positioning members as intermediary components between the pivot shaft and pivot hole. These positioning members fill the gap and prevent radial displacement while allowing rotational movement, thus mediating between the need for easy rotation and the need for stable optical alignment during vibration or drop tests
Solution Approach 2:
The patent segments the pivot connection system into multiple functional components: the pivot shaft, pivot hole, and positioning members. This segmentation allows each component to perform its specific function - the pivot shaft enables rotation, the pivot hole provides the rotation axis, and the positioning members prevent radial displacement - thereby resolving the contradiction between ease of operation and reliability
Data Source
AI summary
The disclosure provides an adjustable optical module, including an optical element, a carrier, a frame, two first positioning members, a base, and two second positioning members. One of the carrier and the frame includes two first pivot shafts that protrude from both sides and extend along a first axis, and the other includes two first pivot holes. The two first pivot shafts are located in the two first pivot holes, respectively. One of the frame and the base includes two second pivot shafts that protrude from both sides and extend along a second axis, and the other includes two second pivot holes. The two second pivot shafts are located in the two second pivot holes, respectively. The disclosure provides a projector, including a light source module, a light valve, a projection lens, and the foregoing adjustable optical module.