Optical Apparatus Lens Barrel Mounting Inversion
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Solution Overview
Problem
Existing optical apparatuses face increased production costs and low efficiency in lens barrel attachment due to complex shapes and the need to bend the apparatus body for position confirmation, which complicates the attachment process.
Innovation Solution
The optical apparatus features a lens-side mounting unit with projection pins and cutout regions, allowing for easier attachment by reversing the positions of these features compared to traditional designs, utilizing a position determination mechanism with projection pins and stoppers to secure the lens barrel to the optical apparatus body, reducing production costs and improving attachment efficiency.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If plate claws with concave parts are formed at the lens barrel side, then position determination is achieved, but the lens barrel shape becomes complex and production cost increases
Solution Approach 1:
The patent inverts the traditional mounting structure by placing the cutout regions ( openings) on the lens barrel side instead of the apparatus body side, and placing the projection pins on the apparatus body side. This inversion simplifies the lens barrel shape while maintaining position determination functionality, as the projection pins on the apparatus body engage with the cutout regions on the lens barrel.
2Reliability
If cutout regions are formed at the apparatus body side, then position determination is possible, but the operator must bend the body to visually confirm positions, reducing attachment efficiency
Solution Approach 1:
The patent reverses the location of cutout regions from the apparatus body side to the lens barrel side. This allows operators to visually confirm the positions of cutout regions on the lens barrel without bending the apparatus body, significantly improving attachment efficiency while maintaining reliable position determination.
Data Source
AI summary
An optical apparatus includes a lens barrel, an optical apparatus body, a body-side mounting unit, a lens-side mounting unit and a position determination mechanism. A plurality of projection pins protrude from an outer circumferential surface of a cylindrical part of the body-side mounting unit. A groove is formed in an inner circumferential surface of the lens-side mounting unit. Cutout regions that are in communication with the groove are formed in a surface of the lens-side mounting unit that faces toward a flange part of the body-side mounting unit at positions that respectively correspond to positions of the projection pins. The position determination mechanism determines a position of the lens-side mounting unit around the optical axis of the optical apparatus body.