Light Source Device Holding Member Protrusions for Lens Alignment
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Solution Overview
Problem
Conventional light source devices require time-consuming and challenging adhesive curing operations to accurately position the light source and coupling lens, due to the need for uniform adhesive coating on the entire circumference of the barrel portion.
Innovation Solution
A light source device with a holding member featuring pair of first protrusions extending from its outer surface, allowing for stable and precise alignment with a frame, reducing the need for extensive adhesive curing to the entire circumference, and enabling easier and more accurate positioning of the light source and coupling lens.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Manufacturing precision
If adhesive is coated on the entire circumference of the barrel portion, then positioning accuracy of light source and coupling lens is improved, but adhesive curing time increases
Solution Approach 1:
The invention divides the adhesive application area from the entire circumference into discrete points (first and second adhesive application positions). This segmentation allows UV light to cure adhesive at specific locations without needing to irradiate the entire barrel portion, thereby reducing curing time while maintaining positioning accuracy through strategic adhesive placement at critical points.
2Manufacturing precision
If adhesive is coated uniformly on the entire circumference, then positioning accuracy is improved, but ease of manufacture deteriorates
Solution Approach 1:
The invention simplifies manufacturing by segmenting adhesive application to specific points rather than requiring uniform circumferential coating. This point-based approach is easier to execute manually or with automated dispensing systems, eliminating the complexity of achieving uniform coverage while maintaining positioning accuracy through strategic adhesive placement.
Solution Approach 2:
The invention applies adhesive only at specific locations (first and second adhesive application positions) rather than uniformly across the entire circumference. This local quality approach concentrates adhesive where it is most effective for positioning, making the coating process simpler while achieving the same or better positioning accuracy.
3Reliability
If entire circumference is irradiated with ultraviolet light, then adhesive curing is achieved, but productivity decreases
Solution Approach 1:
The invention segments the UV irradiation requirement from complete circumferential exposure to targeted illumination at specific adhesive application points. This allows for faster, more focused curing that maintains reliable adhesive bonding while significantly improving assembly productivity by reducing the time and energy required for the curing process.
Applied Scientific Principles
This section explains which scientific principles are used to turn an abstract innovation direction into a practical engineering solution.
Function Achieved in This Case
This configuration allows for faster and more precise alignment of the light source and coupling lens, improving the efficiency of the adhesive curing process and enhancing the stability and accuracy of the light source device.
Implementation Method 1
a coupling lens configured to convert light emitted from the light source into a beam of light
Implementation Method 2
the adhesive is irradiated and cured with ultraviolet light so that the positions of the light source and the coupling lens are fixed
Data Source
AI summary
A light source device includes a light source, a coupling lens configured to convert light emitted from the light source into a beam of light, a holding member configured to hold the coupling lens, and a frame to which the holding member is fixed. The holding member includes a tubular main body portion for holding the coupling lens, and a pair of first protrusions sticking out from an outer peripheral surface of the main body portion. The pair of first protrusions have fixing surfaces lying in the same plane and fixed to the frame.