Optical Scanning Device with Bonded Columnar Structures
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Solution Overview
Problem
Current optical scanning devices face challenges in downsizing while maintaining high accuracy and efficiency, particularly in the configuration and manufacturing processes.
Innovation Solution
The optical scanning device incorporates a first structure with a support, driver, and first columnar body, and a second structure with a reflector and second columnar body, where the reflector faces the support, and the beam is positioned opposite to the second structure, utilizing semiconductor processing to form these components and bond them for optimal alignment and size reduction.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Volume of moving object
If the reflector is bonded onto the rotation body with the support column interposed therebetween to form a three-dimensional structure, then downsizing of the optical scanning device is attained, but the manufacturing complexity increases
Solution Approach 1:
The optical scanning device is divided into two separate structures: a first structure including the support, driver, and first columnar body, and a second structure including the reflector and second columnar body. These structures are manufactured separately and then bonded together, allowing for simplified individual manufacturing processes while achieving the compact three-dimensional integrated structure when combined.
2Manufacturing precision
If the beam is disposed in a portion of the support opposite to the side where the second structure is disposed, then manufacturing accuracy is improved, but the device complexity increases
Solution Approach 1:
The first columnar body and second columnar body serve as intermediary bonding interfaces between the first structure and second structure. These columnar bodies provide precise alignment features that facilitate accurate bonding while simplifying the overall manufacturing process by establishing clear registration points.
3Productivity
If semiconductor processing is used to form the components and bond them, then manufacturing efficiency is improved, but the manufacturing precision requirements increase
Solution Approach 1:
The first structure and second structure are manufactured separately using semiconductor processing techniques before being bonded together. This preliminary separate manufacturing allows for precise fabrication of each component with standard semiconductor processes, and the columnar bodies are pre-formed with bonding surfaces that facilitate subsequent precise alignment and bonding.
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 enables the downsizing of optical scanning devices while maintaining accurate scanning capabilities, allowing for more compact designs and efficient manufacturing processes.
Implementation Method 1
In the optical scanning device, electromagnetic force, electrostatic force, or the like is used as driving force. The rotation body rotates about the beam by the electromagnetic force or the electrostatic force.
Implementation Method 2
In the optical scanning device, electromagnetic force, electrostatic force, or the like is used as driving force. The rotation body rotates about the beam by the electromagnetic force or the electrostatic force.
Implementation Method 3
After the first structure and the second structure are formed, the first columnar body and the second columnar body are bonded together such that the reflector faces the support.
Data Source
AI summary
An optical scanning device includes a first structure and a second structure. The first structure includes a support, a driver, a first columnar body, a driving section, and a pair of beams. The support includes a support body and a flat section. The pair of beams connects the driver and the flat section. The driving section includes a coil, a pair of electrode pads, and a magnet. The second structure is provided with a reflector.