Optical Element Coating Adhesion via Segmented Support
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Solution Overview
Problem
Existing methods for coating optical elements, such as lenses, face film formation failures due to inadequate adhesion of coating liquids at the interface between the lens and its holding member, leading to incomplete functional film coverage.
Innovation Solution
An optical element design featuring a main body with an optical part and a support part, where the functional layer is applied to cover the optical surface without covering the support part, using methods like dip coating or spray coating, ensuring proper support and preventing film formation failures.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If the lens is held using a lens holding member for coating the functional film, then the optical element can be supported during the coating process, but the coating liquid does not sufficiently adhere to the contact part between the holding member and the lens, causing film formation failure
Solution Approach 1:
The optical element is divided into two distinct parts: an optical part with an optical surface that requires functional film coverage, and a support part that serves as a mounting interface. This segmentation allows the functional film to be applied only where needed on the optical part, while the support part remains exposed for proper adhesion to the holding member, eliminating the film formation failure issue at the contact interface.
2Manufacturing precision
If the functional layer is applied to cover the entire surface including the support part, then complete coverage is achieved, but the coating liquid cannot sufficiently adhere at the contact part between holding member and support part
Solution Approach 1:
The functional film is selectively applied only to the optical part's optical surface, while the support part is deliberately left uncovered. This local quality approach ensures that the functional film provides its intended function where needed, while the exposed support part maintains optimal adhesion properties for bonding to the holding member, preventing film formation failures at the critical contact interface.
Data Source
AI summary
An optical element according to the present disclosure includes a main body part including an optical part having an optical surface, and a support part which is provided to the optical part, and which is to be supported by a support body, and a functional layer which is provided as a film to the main body part, wherein the functional layer is disposed so as to cover the optical surface of the optical part, and so as not to cover at least a part of the support part.