Joined Optical Member Design for Eccentricity Adjustment
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Solution Overview
Problem
Existing optical element holding devices have a large diameter due to the need for a lens barrel to cover side surfaces of multiple lenses, making it difficult to adjust the eccentricity of lenses during centering.
Innovation Solution
A joined optical member comprising a hardly adhesive optical element, an easily adhesive optical element, a bonding member with an exposed portion embedded in the hardly adhesive element, and an adhesive that allows the easily adhesive element to adhere to the exposed portion, eliminating the need for a lens barrel and enabling easier adjustment of eccentricity.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Stability of the object's composition
If a lens barrel is used to cover side surfaces of multiple lenses, then the structural stability is improved, but the diameter of the optical device increases and adjustment of lens eccentricity becomes difficult
Solution Approach 1:
The invention divides the optical system into separate joined optical members, each comprising multiple optical elements bonded together without requiring a common lens barrel. This segmentation allows each member to be optimized independently and eliminates the need for a large-diameter barrel structure, thereby maintaining structural stability while enabling easier eccentricity adjustment.
Solution Approach 2:
Multiple optical elements are merged into a single joined optical member through direct bonding. This combining approach eliminates the need for a separate lens barrel structure, reducing the overall diameter while maintaining structural integrity through the bonded configuration of the optical elements themselves.
2Stability of the object's composition
If a lens barrel is used to cover side surfaces of multiple lenses, then the structural stability is improved, but the diameter of the optical device increases
Solution Approach 1:
The optical system is segmented into multiple independent joined optical members that can be closely positioned without requiring a large-diameter lens barrel. This segmentation reduces the overall footprint and diameter of the optical device while maintaining structural stability through the bonded configuration of each member.
Solution Approach 2:
Multiple optical elements are merged into compact joined optical members through direct bonding, eliminating the need for a large-diameter lens barrel. This merging reduces the overall device diameter while maintaining structural integrity through the bonded optical element configuration.
3Device complexity
If multiple optical elements are joined directly without a bonding member, then the device complexity is reduced, but the bonding strength between hardly adhesive materials is insufficient
Solution Approach 1:
A bonding member is introduced as an intermediary between optical elements made of hardly adhesive materials. This bonding member facilitates reliable adhesion while maintaining a relatively simple overall structure, resolving the contradiction between structural simplicity and bonding strength requirements.
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 reduces the diameter of the optical member and facilitates easy adjustment of eccentricity between optical elements, improving the bonding strength and optical performance by eliminating gaps and unnecessary reflections.
Implementation Method 1
an adhesive that allows the easily adhesive optical element and the exposed portion of the bonding member to adhere to each other. The easily adhesive material has higher adhesiveness with the adhesive than the hardly adhesive material.
Data Source
AI summary
A joined optical member 1 includes: a hardly adhesive lens L1 that is formed of a hardly adhesive material; an easily adhesive lens L2 that is formed of a easily adhesive material and is provided parallel to the hardly adhesive lens L1 in an optical axis direction; a bonding member that includes an exposed portion 2a and is embedded in the hardly adhesive lens L1, the exposed portion 2a being exposed to an outer peripheral portion 11 of a facing surface L1a of the hardly adhesive lens L1 that faces the easily adhesive lens L2; and an adhesive 3 that allows the easily adhesive lens L2 and the exposed portion 2a of the bonding member 2 to adhere to each other. The easily adhesive material has higher adhesiveness with the adhesive than the hardly adhesive material.