Glass Plate Mediator for Optical Alignment in Imaging Apparatus
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Solution Overview
Problem
Existing imaging apparatuses fail to ensure appropriate positional relationships between lenses and imaging devices, leading to suboptimal optical characteristics due to assembly based on markers without confirming optical positions.
Innovation Solution
The assembly of optical system blocks and imaging devices is performed based on a glass plate that clearly defines optical positions, ensuring precise alignment and focusing of incident light for high optical characteristics.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Ease of manufacture
If the lens and imaging device are assembled based on a lens barrel portion using a marker, then the assembly process is simple, but the positional relationship between the lens and imaging device cannot be guaranteed, resulting in poor optical characteristics
Solution Approach 1:
A glass plate is introduced as an intermediary component between the lens barrel portion and the imaging device. The glass plate includes a through-hole with a specific positional relationship to the imaging device, serving as a reference marker for assembly. This intermediary element enables precise positioning without requiring complex direct alignment between the lens and imaging device.
Solution Approach 2:
The glass plate is prepared in advance with a through-hole positioned at a predetermined location relative to the imaging device. This preliminary preparation of the reference marker allows the lens barrel portion to be assembled based on this pre-established positional relationship, ensuring optical precision before the actual lens assembly occurs.
2Reliability
If an opaque resin is applied to the inner face of a through-hole to prevent unnecessary light, then optical characteristics are improved by blocking stray light, but the assembly precision between lens and imaging device is not ensured
Solution Approach 1:
The glass plate with a precisely positioned through-hole serves as a mediator that simultaneously addresses both light blocking and assembly positioning. The through-hole's position is predetermined relative to the imaging device, providing a reference for accurate assembly while also serving as the structure through which opaque resin can be applied to block stray light.
Solution Approach 2:
The patent combines multiple functions into the glass plate: it serves as both a reference marker for assembly positioning and as a structure for light blocking. The through-hole in the glass plate is positioned to provide assembly reference, and opaque resin is applied to its inner face to block unnecessary light, merging positioning and light control functions into a single component.
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 approach allows for the achievement of high-precision optical characteristics by ensuring accurate positioning of optical system blocks and imaging devices relative to the glass plate, resulting in improved imaging performance and reduced manufacturing complexity.
Implementation Method 1
an optical system block configured to focus incident light at a predetermined focus point
Implementation Method 2
a glass plate configured to transmit incident light incident through the optical system block
Implementation Method 3
an imaging device configured to generate a pixel signal through photoelectric conversion with the incident light focused by the optical system block through the glass plate
Data Source
AI summary
The present technology relates to an imaging apparatus and a manufacturing method of the imaging apparatus. A glass plate 13 is mounted at a position corresponding to an opening portion 15a on a substrate 15. An imaging device 16 is mounted at a position with an optically appropriate distance in terms of design based on a surface of the glass plate 13 on a face of the substrate 15 opposite to a face on which the glass plate 13 is mounted, at a position corresponding to the opening portion 15a. A lens barrel portion 11 is placed so that the optical system block 12 is set at a position with an optically appropriate distance on the glass plate 13, and fixed with an adhesive 14.