Threaded Lens Housing for Precise Axial Optical Alignment
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Solution Overview
Problem
Laser light source systems suffer from deviations in light spot size and illumination brightness due to manufacturing and assembly errors in optical components and light path angles, affecting performance, especially in systems requiring light splitting and combination.
Innovation Solution
A lens housing and module design featuring a lens holder with an internal thread, a lens barrel with an external thread and adjustment structure, and a fixed pressing plate for axial adjustment, ensuring precise alignment and fixation of optical components.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Productivity
If optical components are fixed in position during assembly, then assembly speed is improved, but manufacturing precision deteriorates due to accumulated errors
Solution Approach 1:
The lens barrel is designed with a threaded adjustment structure that allows dynamic positioning of the optical component along the axial direction. The lens holder includes an adjustment thread that enables the lens barrel to be rotated and adjusted to different positions, transforming a static fixed-position structure into a dynamic adjustable one. This resolves the contradiction by allowing precision adjustment before final assembly, while maintaining efficient assembly through the standardized threaded interface.
Solution Approach 2:
The optical component is pre-positioned within the lens barrel using a pressing plate that can be adjusted axially. This preliminary positioning allows the optical component to be accurately positioned within the lens barrel before the entire assembly is installed in the lens holder. The pressing plate's adjustable structure enables precise positioning to be performed in advance, reducing accumulated errors during final assembly.
2Manufacturing precision
If optical components are made adjustable to reduce deviations, then manufacturing precision is improved, but device complexity increases
Solution Approach 1:
The adjustment mechanism is segmented into distinct functional components: the lens holder with an adjustment thread, the lens barrel with a corresponding threaded structure, and the pressing plate with axial movement capability. This segmentation allows each component to perform a specific function (positioning, holding, adjusting) while maintaining overall simplicity. The modular design reduces complexity by breaking down the adjustment function into manageable, standardized parts.
Solution Approach 2:
The threaded adjustment structure serves multiple functions: it enables axial positioning of the lens barrel, provides a locking mechanism through threading, and allows for both adjustment and fixation operations. The pressing plate similarly serves dual functions of holding the optical component in place while allowing axial adjustment. This multi-functionality reduces device complexity by eliminating the need for separate adjustment and locking mechanisms.
3Stability of the object's composition
If the lens barrel is fixed in the lens holder, then structural stability is improved, but adjustment capability is lost
Solution Approach 1:
The connection between the lens barrel and lens holder is designed as a dynamic adjustable structure using threaded interfaces. The lens holder includes an adjustment thread that allows the lens barrel to be rotated and positioned at different axial locations. After positioning, the threaded structure provides inherent locking capability that maintains stability without complete fixation. This dynamic connection resolves the contradiction by providing both adjustability during setup and stability during operation.
Solution Approach 2:
The threaded adjustment structure is designed to be self-locking through the nature of screw threads. Once the lens barrel is adjusted to the desired position and the threading is engaged, the structure automatically maintains its position without requiring additional active locking mechanisms. The pressing plate similarly self-locks the optical component in place through friction and geometric constraints. This self-service characteristic provides stability while preserving adjustment capability.
Data Source
AI summary
A lens housing, a lens module and a light source system are disclosed. The lens housing includes a lens holder, a leans barrel, and a fixed pressing plate. The lens holder includes an accommodating cavity having an internal thread. The lens barrel is provided with a receiving cavity along an axial direction and includes an adjustment structure along a circumferential direction. An outer circumferential wall of the lens barrel is provided with an external thread matching the internal thread. The lens barrel is embedded in the accommodating cavity of the lens holder and is in threaded connection with the lens holder. The fixed pressing plate is fixed to one side of the lens barrel away from the lens holder and is capable of moving axially relative to the lens holder.