Lens Assembly With Optical-Axis Detection for Tool-Free Alignment
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Solution Overview
Problem
Existing lens assemblies require expensive inspection equipment to determine the optical axis, leading to high production costs and inefficiencies in the assembly process.
Innovation Solution
Incorporation of detection units with nicks on the optical film that allow for real-time observation of the optical axis, eliminating the need for expensive equipment and enabling precise alignment without additional tools.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Measurement precision
If expensive inspection equipment is used to determine the optical axis position, then measurement precision is improved, but manufacturing cost increases
Solution Approach 1:
The patent uses a disposable sticker with detection patterns instead of expensive reusable inspection equipment. The sticker is placed on the lens assembly, photographed by a standard camera, and then discarded after serving its purpose of enabling optical axis determination at low cost.
Solution Approach 2:
The patent creates a visual copy of the optical axis position through detection patterns (nick, hole, or edge) on the sticker that correspond to the optical axis location. This visual copy can be captured by ordinary imaging equipment rather than requiring specialized inspection devices.
2Measurement precision
If expensive inspection equipment is used to determine the optical axis position, then measurement precision is improved, but productivity decreases
Solution Approach 1:
The patent replaces complex mechanical inspection equipment with a simple photographic system. A standard camera captures images of the detection patterns on the sticker, and software automatically determines the optical axis position from these images, significantly speeding up the process.
Solution Approach 2:
The detection sticker is pre-prepared with detection patterns (nick, hole, or edge) at known positions that correspond to the optical axis. This preliminary preparation allows for rapid identification of the optical axis during assembly without requiring complex real-time measurement equipment.
3Device complexity
If the optical axis is not observable, then device complexity is reduced, but ease of operation worsens
Solution Approach 1:
The patent introduces an intermediary detection sticker with visible detection patterns that mediates between the invisible optical axis and the operator's visual system. The sticker translates the invisible optical axis position into visible patterns (nick, hole, or edge) that can be easily observed and used for alignment.
Solution Approach 2:
The detection sticker uses visual contrasts (such as a dark nick, a hole showing the background, or an edge against the lens surface) to make the optical axis position observable. These visual changes allow operators to easily identify and align with the optical axis without adding complexity to the optical film itself.
Data Source
AI summary
This disclosure provides a lens assembly, a processing method of lens assembly and a display device. The lens assembly comprising a lens and one or more film. The lens comprises an optical part, a connection part, and a plurality of detection units, each of the plurality of detection units comprises two detection parts, and a first virtual line is defined between the two detection parts, the first virtual lines of the plurality of detection units is intersected at an intersection point. The film comprises an optical film, one or more release film, and a nick, the optical film defines an optical axis, the nick is provided on a surface of the release film, projection of the nick on the optical film is coincided with the optical axis, two ends of the nick is corresponded to each of the two detection parts of a detection unit.