Optical Lens Aperture Stop Relocation for Thinning
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Solution Overview
Problem
Conventional optical lenses with aperture-adjustable stops are limited in thinness due to the need for space within the lens system for structural and control components, preventing further miniaturization.
Innovation Solution
The optical lens design incorporates a first aperture stop within the lens group and a second aperture stop outside the lens group, allowing for the relocation of structural and control components outside the lens system, thereby enabling further thinning.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Ease of operation
If the aperture-adjustable stop is disposed within the lens group, then the aperture can be adjusted, but the lens thickness increases due to space required for structural and control components
Solution Approach 1:
The patent extracts the aperture-adjustable stop from the lens group and relocates it to the lens holder. This separation removes the need for internal space accommodation of aperture control components within the lens group, thereby reducing lens thickness while preserving aperture adjustment functionality. The lens holder serves as the new mounting location for the aperture stop and its control mechanisms.
2Length of moving object
If the aperture stop is moved outside the lens group, then the lens can be thinned, but the effective aperture range may be affected
Solution Approach 1:
The patent implements a multi-functional lens holder that simultaneously serves as the mounting structure for the aperture stop and as the positioning element for the entire lens assembly. This universal component design allows the aperture control function to be integrated into the existing lens holder structure without compromising optical performance or aperture range, while enabling lens thinning.
Data Source
AI summary
An optical lens makes object light rays transmit from an object side to an image side on an optical axis and form an image on an image plane. The optical lens comprises a lens group establishing the optical axis, comprising a first lens and a second lens arranged in order from the image side to the object side, wherein the first lens has an image-side surface which is a concave face and has a point of inflection arranged thereon; and a first aperture stop and a second aperture stop separately located on the optical axis. The optical lens meets the thinning tendency.