Light Scanning Device with Adjustable Substrate Mounting
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Solution Overview
Problem
Existing light scanning devices face challenges in adjusting the position and direction of light-emitting elements for accurate scanning, leading to increased component count, large apparatus size, and potential load application on terminals, as well as noise issues due to flexible harness connections between substrates.
Innovation Solution
A light scanning device design featuring a first substrate with displaceable mounting positions for light-emitting elements and a second substrate for direct connector coupling, minimizing mounting space and avoiding load on terminals, with shared holes for terminal insertion and soldering, and a compact housing arrangement.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Ease of operation
If light-emitting elements are mounted on a substrate and the mounting position is adjusted, then the position and direction of light emission surfaces can be adjusted, but the apparatus size increases due to required mounting space margins
Solution Approach 1:
The patent implements a dynamic adjustment mechanism where light-emitting elements can be repositioned on the substrate after mounting. The substrate includes adjustable mounting structures that allow the light-emitting elements to be shifted to different positions and orientations, enabling post-mounting adjustment without requiring large margins in the apparatus design.
2Ease of operation
If multiple light-emitting elements are mounted on different substrates for individual adjustment, then position and direction can be individually adjusted, but the number of components and apparatus size increase
Solution Approach 1:
The patent combines multiple light-emitting elements onto a single substrate while maintaining individual adjustability. The substrate is designed with multiple adjustable mounting positions that can accommodate different light-emitting elements, allowing each element to be independently positioned and oriented without requiring separate substrates for each element.
3Manufacturing precision
If light-emitting elements are secured to housing and then mounted on substrates, then positioning can be established, but load is applied on terminals causing optical axis shift
Solution Approach 1:
The patent introduces an intermediary mounting structure on the substrate that separates the securing function from the terminal connection function. The light-emitting elements are mounted on the substrate through this intermediary structure, which allows the elements to be secured without applying direct load to their terminals, thereby preventing optical axis shift while maintaining positioning accuracy.
4Ease of manufacture
If flexible harness is used to connect substrates, then substrate coupling is enabled, but noise interference increases
Solution Approach 1:
The patent replaces the flexible harness connection with a direct rigid connection between substrates. This substitution eliminates the mechanical flexibility that causes noise interference while maintaining the electrical and mechanical connectivity required for substrate operation, thereby reducing noise interference in the optical system.
Data Source
AI summary
A light scanning device includes a plurality of light-emitting elements for scanning a scan object with respective light beams emitted from the respective light-emitting elements. The light scanning device includes secured sections, a first substrate, and a second substrate. To the secured sections, the respective light-emitting elements are secured. The first substrate includes a first connector. Mounting positions of the respective light-emitting elements to the first substrate are displaceable. The respective light-emitting elements are coupled to the first substrate. The second substrate includes a second connector coupled to the first connector. The first substrate and the second substrate are secured to a first specified position and a second specified position, respectively.