Exposing Unit Assembly for Precise LED-Lens Alignment
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Solution Overview
Problem
Existing methods for producing an exposing unit with an LED array and lens array require complex apparatuses due to the need for electrical connection during position adjustment, leading to complications in fixing the substrate to the holding member.
Innovation Solution
A method where the substrate is first fixed to the holding member, followed by the lens array, using suction pads to correct warpage and six-axis adjustment for precise positioning, and ultraviolet-curable adhesive for secure bonding.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Manufacturing precision
If the lens array is fixed to the holding member first and then the substrate is fixed, then the position adjustment can be performed, but an electrical contact tool must be connected to electrode pads to cause the LED array to emit light, leading to a complicated producing apparatus
Solution Approach 1:
The substrate is fixed to the holding member before the lens array. This preliminary action allows the substrate to be securely positioned and electrically connected to the electrode pads before any position adjustment occurs. The electrical contact tool can then be connected to the electrode pads on the already-fixed substrate to enable LED light emission for accurate position adjustment of the lens array, eliminating the need for complex apparatus
2Manufacturing precision
If the substrate is fixed to the holding member while adjusting its position with an electrical contact tool connected to electrode pads, then the LED array can emit light for position adjustment, but the producing apparatus becomes complicated
Solution Approach 1:
The substrate is fixed to the holding member before any position adjustment is performed. This preliminary fixation secures the substrate in place, allowing subsequent position adjustment of the lens array to be performed with the substrate already stable. The electrical contact tool can then be connected to the electrode pads on the fixed substrate to enable LED light emission for accurate lens array position adjustment
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
Enables accurate assembly of the substrate and lens array without complicating the producing apparatus, ensuring high imaging quality by simplifying the assembly process and reducing local deflections.
Implementation Method 1
ultraviolet-curable adhesive for secure bonding
Data Source
AI summary
The exposing unit includes a substrate, a plurality of light emitting elements provided on the substrate, a lens array configured to condense light emitted from the plurality of light emitting elements on an irradiated surface, and a holding member configured to hold the substrate and the lens array. A method for producing an exposing unit includes fixing the substrate to the holding member, and fixing the lens array to the holding member after the substrate is fixed to the holding member.