Lens Module with Extracted Stop for Reduced Barrel Thickness
Find Innovative SolutionsGenerate Solutions
Solution Overview
Problem
Existing lens modules face challenges in miniaturization due to increased height and weight caused by the thickness of the light hole on the barrel wall, which complicates production and affects image quality by allowing reflective light.
Innovation Solution
A lens module design featuring a stop and press ring structure within the lens barrel, where the stop is fixed on the first barrel wall and the press ring presses down on the stop, creating a thinner profile that reduces glare and simplifies production by aligning the light hole axis with the optical axis, and using a glue groove for secure assembly.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Ease of manufacture
If a light hole is created on the first barrel wall for the lens, then the lens can be installed and function properly, but the barrel wall thickness must be increased, leading to increased height and weight of the lens module
Solution Approach 1:
The patent extracts the light hole creation from the barrel wall structure by introducing a separate stop component with a light hole. This stop is clamped between the first barrel wall and the first lens, allowing light to pass through without requiring thickness in the barrel wall itself. The light hole function is separated from the structural barrel wall.
Solution Approach 2:
The stop acts as an intermediary component between the barrel wall and the lens. It provides the light hole function while being clamped in place by the barrel structure, mediating between the need for light passage and the need for structural integrity without requiring thick barrel walls.
2Manufacturing precision
If the barrel wall thickness is increased to accommodate the light hole, then the lens can be properly positioned, but the height and weight of the entire lens module increases
Solution Approach 1:
The positioning and light hole functions are extracted from the barrel wall and assigned to separate components (stop and lens holder). This allows precise positioning through the clamping mechanism without adding overall module weight, as the functionality is distributed to lightweight separate parts rather than thickening the barrel wall.
Solution Approach 2:
The lens module is segmented into multiple independent components: barrel, stop, lens holder, and lens. Each component performs a specific function, allowing optimization of each part's weight and structure. The stop provides light hole function, the holder provides positioning, and the barrel provides structural support, eliminating the need for a heavy thickened barrel wall.
3Ease of manufacture
If the light hole on the first barrel wall is used, then the lens can be installed, but production becomes more difficult and yield decreases
Solution Approach 1:
The light hole function is extracted from the barrel wall molding process and assigned to a separate stop component. This allows the barrel to be molded without complex light hole features, simplifying barrel production. The stop with the light hole is a separate, simpler component that can be manufactured independently and assembled into the final module, improving overall production yield.
Data Source
AI summary
The present disclosure discloses a lens module. The lens module includes a lens barrel and a lens group. The lens group is installed inside the lens barrel. The lens barrel includes a first barrel wall extended horizontally and a second barrel wall bended and extended from the first barrel wall. The lens module also includes a stop and a press ring. The stop is fixed on the first barrel wall. The press ring is located on the stop and presses on the stop. The stop and the lens group are lined up in turn from object side to image side. The length of the lens barrel is reduced due to the stop and the press ring, when shaping of lens barrel is being done, production difficulty of shaping is decreased, and the yield of qualified lens barrel is increased.