Optical Radar Light Source Structure Substrate Assembly
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Solution Overview
Problem
Existing optical radar devices have complex manufacturing processes and are difficult to miniaturize due to the individual welding of laser diodes to the circuit board, which affects the accuracy of light beam emission and requires extensive adjustment and calibration.
Innovation Solution
A light source structure comprising a light source module with a substrate and multiple light emitting units, a circuit board, a cover with a light permeable portion, and a beam adjusting module that includes a fast axis collimator and a slow axis collimator, allowing for individual control of light emitting units and simplifying the assembly process.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Ease of manufacture
If laser diodes are individually welded to the circuit board, then the light source structure can be assembled, but the manufacturing process becomes complex and the beam irradiation direction is easily affected
Solution Approach 1:
The patent divides the light source into multiple independent light emitting units (laser diodes) that are mounted on a substrate rather than individually welding to the circuit board. This segmentation allows each unit to be independently controlled and positioned, simplifying the manufacturing process while maintaining beam direction accuracy through the substrate's rigid structure.
Solution Approach 2:
The patent introduces a substrate as an intermediary component between the light emitting units and the circuit board. This substrate serves as a stable mounting platform that maintains the relative positions and orientations of the light emitting units, thereby ensuring accurate beam irradiation direction while simplifying the overall assembly process.
2Productivity
If multiple laser diodes are arranged into an array on a circuit board, then the light source structure can emit laser beams at a predetermined frequency, but the device becomes difficult to miniaturize
Solution Approach 1:
The patent merges multiple light emitting units onto a single substrate, creating an integrated light source module. This combining approach allows the array of laser diodes to be treated as a single functional unit, reducing the overall device volume while maintaining the capability to emit multiple laser beams at predetermined frequencies.
Solution Approach 2:
The patent implements a nested structure where the light emitting units are mounted on the substrate, which is then integrated with the circuit board and covered by a cover. This nested arrangement optimizes space utilization and facilitates miniaturization while preserving the multi-frequency laser beam emission capability.
3Manufacturing precision
If the laser diode array is checked by way of beam projections in the subsequent alignment and correction process, then the beam irradiation direction can be adjusted, but the manufacturing process becomes more complex
Solution Approach 1:
The patent incorporates beam projecting structures directly into the substrate during the manufacturing process. This preliminary action ensures that the beam irradiation direction is predetermined and built-in, eliminating the need for subsequent complex alignment and correction processes while maintaining high manufacturing precision.
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 proposed solution enhances the accuracy of light beam emission, simplifies the manufacturing process, reduces the number of components, and facilitates miniaturization of optical radar devices.
Implementation Method 1
each of the light emitting units includes a light emitting portion... the light emitting portion is disposed to face the light permeable portion... light emitted from the light emitting portion passes through the light permeable portion
Implementation Method 2
The beam adjusting module is disposed close to the light permeable portion of the cover, wherein light emitted from the light emitting portion passes through the light permeable portion and the beam adjusting module to form a working light beam
Implementation Method 3
the substrate has electrical insulation and thermal conductivity, and heat generated by the light emitting units during operation is conducted to the substrate to be dissipated
Data Source
AI summary
An optical radar device, a light source structure and the assembly process thereof are provided. The light source structure includes a light source module, a circuit board, a cover and a beam adjusting module. The light source module includes a substrate that includes a bearing surface, and a light source element that is disposed on the bearing surface and includes light emitting units. Each light emitting unit includes a light emitting portion. The light source module is disposed on the circuit board. The cover, disposed on the circuit board to cover the light source module, is a continuous piece and includes a light permeable portion that is disposed to face the light permeable portion. The beam adjusting module is disposed close to the light permeable portion. Light emitted from the light emitting portion passes through the light permeable portion and the beam adjusting module to form a working light beam.