Laser Diode Bar End-Face Film Deposition With Wear-Tolerant Dummy Bar
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Solution Overview
Problem
The wear of the plate during cleaning causes the laser diode bar to sink at the worn place, leading to displacement of the dummy bar and the laser diode bar, resulting in inaccurate control of the insulating-film deposition on the end faces of the laser diode bar.
Innovation Solution
A dummy bar with a body part having a longitudinal length equal to that of the laser diode bar and handle parts provided on the side surfaces, allowing for precise alignment and handling, even on a worn plate, to ensure accurate deposition of the insulating film.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Ease of operation
If the dummy bar has a longitudinal length longer than the laser diode bar to improve handleability, then the dummy bar is easier to handle during arrangement, but the laser diode bar sinks at worn places on the plate causing displacement between the dummy bar and laser diode bar
Solution Approach 1:
The dummy bar is designed with the same longitudinal length as the laser diode bar, creating a precise dimensional copy that ensures accurate alignment during film deposition. This copying approach allows the dummy bar to perfectly match the laser diode bar's dimensions, preventing any displacement even on worn plates, while handleability is maintained through separate handle part design
2Productivity
If the plate is cleaned repeatedly to enable multiple uses, then the plate can be reused, but the periphery of the opening becomes worn leading to inaccurate film deposition
Solution Approach 1:
By making the dummy bar a precise dimensional copy of the laser diode bar with matching longitudinal length, the system compensates for plate wear. The dummy bar serves as a reference that maintains alignment accuracy regardless of plate condition, allowing repeated plate cleaning and reuse without compromising deposition precision
3Ease of operation
If the dummy bar and laser diode bar are displaced due to plate wear, then handleability is maintained, but the amount of insulating-film straying changes leading to decreased reliability
Solution Approach 1:
The dummy bar is designed as a precise dimensional copy with the same longitudinal length as the laser diode bar, ensuring that alignment is maintained even on worn plates. This prevents displacement and ensures consistent insulating-film deposition amount, maintaining film reliability while preserving the handleability benefits of the dummy bar design
Solution Approach 2:
The invention changes the critical parameter of the dummy bar's longitudinal length to match exactly with the laser diode bar length. This parameter change ensures that the dummy bar and laser diode bar remain aligned during film deposition even when the plate is worn, preventing variations in insulating-film straying amount and maintaining deposition reliability
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
The dummy bar with a body part matching the length of the laser diode bar and handle parts for improved handleability ensures accurate control of insulating-film deposition on the end faces of the laser diode bar, even when the plate is worn, thereby maintaining the reliability of the insulating film.
Implementation Method 1
an insulating film is sequentially deposited on both end faces of each laser diode bar
Implementation Method 2
an insulating film is sequentially deposited on both end faces of each laser diode bar
Data Source
AI summary
A dummy bar is used to align a laser diode bar during deposition of an insulating film on a front end face (32) and a rear end face (34) of a laser diode bar (30), the dummy bar including a body part (12) having a plate shape, and including a pair of side surfaces (14), an upper surface (16), and a lower surface (18), the body part having a longitudinal length equal to a longitudinal length of the laser diode bar (30), the pair of side surfaces (14) being orthogonal to a longitudinal direction and opposite each other, the upper surface (16) and the lower surface (18) being orthogonal to the pair of side surfaces, parallel to a thickness direction of the plate shape, and opposite each other and a handle part (20) provided at a position separated from the lower surface (18) on each of the pair of side surfaces (14).