Inverted Space Ring Lens Positioning
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Solution Overview
Problem
Conventional space rings used in lens systems are prone to errors in maintaining the accurate distance between lens centers due to shape inaccuracies and chamfering issues, requiring complex assembly processes and special equipment.
Innovation Solution
A space ring with annular or rectangular frame shapes having inverted surfaces matching the lens periphery, allowing precise surface contact for accurate positioning without the need for special equipment, and manufactured from materials like glass to maintain high accuracy.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Ease of manufacture
If a conventional space ring is used with abutting positioning to the lens edge, then the assembly process is simple, but the positioning accuracy and distance between lens centers deteriorates due to shape inaccuracies and chamfering
Solution Approach 1:
The space ring's positioning surface is designed with an inverted shape matching the lens periphery (convex for concave lens edges and vice versa), enabling surface contact positioning instead of edge abutting. This inversion allows the space ring to compensate for shape inaccuracies and chamfering, achieving high positioning accuracy while maintaining simple assembly.
Solution Approach 2:
The space ring features a localized inverted positioning surface that specifically contacts the lens periphery, while the rest of the space ring maintains its simple annular structure. This local quality modification enables precise positioning without complicating the overall assembly process.
2Manufacturing precision
If high accuracy is required for lens center distance, then special transparent equipment and complex assembly processes are needed, but this increases device complexity and assembly difficulty
Solution Approach 1:
The inverted positioning surface on the space ring enables self-aligning and self-positioning of lenses during assembly. The complementary shapes automatically guide the lenses into correct positions through surface contact, eliminating the need for special transparent equipment and complex assembly procedures while maintaining high accuracy.
3Ease of manufacture
If the space ring uses conventional flat surfaces for positioning, then manufacturing is simple, but positioning accuracy deteriorates due to sensitivity to edge shape variations
Solution Approach 1:
The positioning surface of the space ring is inverted to match the lens periphery shape, transforming the conventional flat surface into a complementary curved surface. This allows the space ring to accommodate variations in lens edge shapes while maintaining simple manufacturing processes and achieving high positioning accuracy.
Data Source
AI summary
The purpose of the present invention is to provide a space ring, a lens system, a method for manufacturing a space ring, and a method for assembling a lens system capable of maintaining a distance between centers of lenses with high accuracy, while easily assembling the lens system without using special equipment. A space ring configured in an annular shape or a rectangular frame shape, wherein at least one main surface 1a is having an inverted shape of a shape of a periphery side of a lens surface 2a of a lens 2 arranged at one side, and a positioning of the lens 2 is performed by surface contacting the one main surface 1a to the periphery side of the lens surface 2a of the lens 2.