Lens Adjusting Device Parallelism Control Mechanism
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Solution Overview
Problem
Existing lens adjusting devices face challenges in maintaining parallelism between guide posts during the assembly process, leading to low position adjustment reliability, asynchronous movement, sudden changes, discontinuity, or jamming, which affects the projective quality of projection images.
Innovation Solution
A lens adjusting device with a first adjusting support and a second adjusting support, where the first guide post is fixedly clamped in a limit slot, and the second guide post is connected to a boss, allowing the lens support to adjust the relative positions of the guide posts to ensure parallelism, preventing asynchronous movement and improving adjustment smoothness and reliability.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Stability of the object's composition
If the guide posts are fixedly clamped and fastened during assembly, then the structural stability is improved, but the parallelism adjustment capability deteriorates
Solution Approach 1:
The patent applies preliminary action by allowing the lens support to adjust the relative positions of guide posts and boss before fastening, ensuring parallelism is established in advance. The lens support modifies the relative position of the second guide post and first boss prior to fastening, so that when fastened, the parallelism is already optimized.
Solution Approach 2:
The patent applies dynamics by transitioning from a static fastened state to a dynamic adjustment state during assembly. The lens support enables the guide posts to be adjusted relative to each other before the fastening operation, allowing the system to evolve from an adjustable configuration to a fixed parallel configuration.
2Adaptability or versatility
If the lens support slides on the guide posts during adjustment, then the position adjustment flexibility is improved, but the asynchronous movement and jamming issues worsen
Solution Approach 1:
The patent applies preliminary action by pre-adjusting the parallelism between guide posts using the lens support before the actual sliding adjustment begins. This preliminary parallelism adjustment prevents asynchronous movement and jamming during subsequent sliding operations.
Solution Approach 2:
The patent applies feedback by using the lens support to detect and adjust the relative positions of guide posts, ensuring they are parallel before fastening. This feedback mechanism prevents asynchronous movement during the sliding adjustment phase.
Data Source
AI summary
Provided are a lens adjusting device and a projection apparatus. The device includes a first adjusting support including a lens support, a first guide post and a second guide post; and a second adjusting support including a moving support, a first limit slot, and a first boss. The first guide post is fixedly clamped in the first limit slot, the second guide post being connected to the first boss, and the lens support being supported by and slidably connected to the first guide post and second guide post, such that the lens support is slidable relative to the second adjusting support along the first direction. The lens support is configured to adjust a position of the second guide post relative to the first boss prior to the second guide post and the first boss being fastened to each other to parallel the second guide post and the first guide post.