Lens-Film Positioning Structure for Optical Axis Alignment
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Solution Overview
Problem
Existing lens assemblies require expensive testing equipment to determine the position of the optical axis, leading to high production costs.
Innovation Solution
Incorporation of position structures, such as bumps and incisions, on the lens and film to facilitate manual alignment of the optical axis, eliminating the need for costly optical measuring equipment during assembly.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Measurement precision
If expensive testing equipment is used to determine the position of the optical axis, then measurement precision is improved, but manufacturing cost increases
Solution Approach 1:
The patent applies preliminary action by pre-defining the optical axis position on the film before bonding to the lens. The film includes marked position information indicating where the optical axis will be located after assembly, allowing workers to align components based on these pre-established markers rather than requiring expensive post-assembly measurement equipment.
2Measurement precision
If expensive testing equipment is used to determine the position of the optical axis, then measurement precision is improved, but device complexity increases
Solution Approach 1:
The patent implements self-service by making the film itself carry the positioning information needed for alignment. The film includes position information that directly indicates the optical axis location, allowing the assembly process to self-align without requiring external testing equipment or complex measurement devices.
3Device complexity
If manual alignment methods are used without position markers, then device complexity is reduced, but manufacturing precision deteriorates
Solution Approach 1:
The patent applies local quality by adding position information specifically at the locations where alignment is needed, rather than making the entire film or lens complex. The film maintains simplicity overall but includes localized marked positions that provide the necessary alignment guidance, achieving high precision without overall complexity.
Data Source
AI summary
The present application provides lens assembly and display device. The lens assembly includes a lens, a film and a plurality of position structures. The lens defines a bonding surface. The film is bonded on the bonding surface, the film defines a first optical axis. each of the plurality of position structures comprises a position bump and a position incision, one of the position bump and the position incision is arranged at the bonding surface, other of the position bump and the position incision is arranged at edge of the film, a part of the position bump is received in the position incision, two of the plurality of position structures defines a first virtual connection line, an angle between the first virtual connection line and the first optical axis is equal to a preset angle.