Optical Scanner Light Source Mounting for Pitch Adjustment
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Solution Overview
Problem
Existing optical scanners face challenges in easily replacing light sources and adjusting beam pitch due to the inability to rotate the light source after mounting, which can lead to damage and increased component costs.
Innovation Solution
An optical scanner design incorporating a light source, optical element, deflective scanner, optical housing, pressing member, and mounting member, where the light source is sandwiched between the pressing member and positioning member, allowing for axial positioning and easy attachment/removal, and adjustable beam pitch without additional components.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If the light source is inserted into a light source mounting portion by press-fitting, then the light source is limited in susceptibility to environmental changes, but the light source cannot be easily removed or rotated after mounting
Solution Approach 1:
The light source mounting structure is divided into a pressing member (with pressing surface) and a positioning member (with positioning surface), allowing the light source to be independently positioned and pressed. This segmentation enables easy removal by simply releasing the pressing force without damaging the mounting portion.
2Manufacturing precision
If the light source is mounted in the light source mounting portion by press-fitting, then the light source is fixed in position, but the light source cannot rotate to adjust beam pitch
Solution Approach 1:
The mounting structure transitions from a static press-fitting design to a dynamic one where the pressing member can be independently pressed and released. This allows the light source to be rotated for beam pitch adjustment during operation, then re-pressed to maintain precision, combining both adjustability and precision.
3Adaptability or versatility
If a rotatable holder is provided to adjust beam pitch, then the beam pitch becomes adjustable, but the number of components and cost increase
Solution Approach 1:
The pressing member serves multiple functions: it secures the light source in position, allows for rotation when pressed, and can be independently removed. This multi-functional design eliminates the need for a separate rotatable holder, reducing component count while maintaining beam pitch adjustability.
4Ease of repair
If the light source is pulled out from the holder with too much force, then the light source can be removed, but the light source mounting portion may be damaged
Solution Approach 1:
The pressing member acts as an intermediary between the user and the light source mounting portion. It provides a dedicated pressing surface for secure mounting and a corresponding removal surface for easy, damage-free removal, protecting the mounting portion from direct force application.
Data Source
AI summary
An optical scanner includes at least one light source, an optical element, a deflective scanner, an optical housing, a pressing member, and a mounting member. The light source emits a light beam to an object. The optical element forms the light beam emitted from the light source into a desired shape. The deflective scanner deflects the light beam. The optical housing stores the optical element and the deflective scanner, and includes at least one positioning member. The positioning member positions the light source in an axial direction of the light source. The pressing member presses the light source toward the positioning member to sandwich the light source between the pressing member and the positioning member and mount the light source on the optical housing. The mounting member fastens the pressing member to the optical housing.