Laser Diode Bar End-Surface Film Formation With Projection Jig
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Solution Overview
Problem
The challenge is to maintain the relative positions of laser diode bars and dummy bars stable during the formation of an insulation film on the end-surface of laser diode bars, as wear on the jig can cause deviations in these positions.
Innovation Solution
The method involves alternately arranging laser diode bars and dummy bars on projections or inclined surfaces of a plate, ensuring that the end surfaces of the laser diode bars protrude relative to the dummy bars, thereby maintaining consistent reference positions for film formation.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Ease of manufacture
If the jig is cleaned and used repeatedly, then the reference surface of the jig wears down and recedes, but this causes changes in the relative positions of the laser diode bar and dummy bar
Solution Approach 1:
The invention transitions from a flat plate reference surface to a three-dimensional projection structure. The bars are positioned on top of projections rather than on a flat surface, so that even when the plate surface wears down from cleaning, the projections maintain their relative heights and positions, preserving the reference position stability for film formation.
2Loss of energy
If the insulation film is formed to wrap around the front and back surfaces, then heat dissipation is improved, but the relative position stability between laser diode bar and dummy bar becomes critical for controlling film wrapping
Solution Approach 1:
By using projections with specific heights, the invention creates a vertical dimension reference that ensures stable relative positioning. This allows the insulation film to be formed with consistent wrapping around the front and back surfaces of the laser diode bar, optimizing heat dissipation while maintaining position stability.
3Area of stationary object
If the distance between laser diode bar and dummy bar is small for compact arrangement, then space is saved, but the bars are in contact with each other making pickup difficult
Solution Approach 1:
The invention segments the plate surface into multiple projections that are spatially separated. Each projection independently holds a bar, creating natural spacing between adjacent bars. This segmentation allows compact overall arrangement while ensuring sufficient gap between bars for easy pickup operations.
Data Source
AI summary
A plurality of laser diode bars and a plurality of dummy bars are alternately arranged on projections provided on an upper surface of a plate so that an opening of the plate is sandwiched between the projections. The plurality of laser diode bars and the plurality of dummy bars are arranged with the projections as reference positions. End surfaces of the plurality of laser diode bars are protruded upward relative to the plurality of dummy bars. Next, an insulation film is formed on protruding portions of the plurality of laser diode bars relative to the plurality of dummy bars.