Adjustable Lens Module Locking Structure for Projection Offset
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Solution Overview
Problem
Conventional projection apparatuses are inconvenient as they require changing the entire device to adjust the image projecting location due to a fixed light valve offset, limiting their flexibility in projecting images onto different positions.
Innovation Solution
A projection apparatus with a lens module incorporating a locking structure that allows adjustable offset of the light axis by using a combination of plates, moving elements, and pushing elements, enabling the projection beam to be directed to various locations without altering the device's size or weight, and maintaining a simple configuration to reduce manufacturing costs.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Adaptability or versatility
If the projection apparatus uses a fixed light valve offset with a fixed projecting lens, then the structure is simple and manufacturing cost is low, but the image projecting location cannot be changed without moving the entire device
Solution Approach 1:
The lens module is segmented into multiple components: a first plate, a second plate, a moving element, and a pushing element. The second plate with the lens can be adjusted relative to the first plate, allowing the light axis offset to be changed without moving the entire projection apparatus. This segmentation enables independent adjustment of the lens position while keeping the overall device structure relatively simple.
Solution Approach 2:
The lens module transitions from a fixed structure to a dynamically adjustable one. The moving element can shift the second plate (with the lens) relative to the first plate along the first direction, and the pushing element enables adjustment along the second direction. This dynamic structure allows the light axis offset to be adjusted without moving the entire device, improving adaptability while controlling complexity.
2Adaptability or versatility
If the projection apparatus uses extra structures to change the projection location, then the image can be projected onto different positions, but the device volume and weight increase
Solution Approach 1:
The lens adjustment mechanism is nested within the existing lens module structure. The second plate with the lens is integrated into the first plate assembly, and the moving element and pushing element are incorporated within the same spatial envelope. This nesting approach allows location adjustment functionality to be added without significantly increasing the overall device volume, as the adjustment mechanism shares space with the existing lens module components.
3Adaptability or versatility
If the projection apparatus uses extra structures to adjust projection location, then the image can be projected to different positions, but the manufacturing cost increases
Solution Approach 1:
The pushing element is designed to be elastically deformable, allowing it to automatically push the moving element and adjust the lens position without requiring external actuators or complex control mechanisms. The elastic deformation of the pushing element provides the necessary force for adjustment, simplifying the overall structure and reducing manufacturing costs while maintaining the ability to adjust projection location.
Data Source
AI summary
A projection apparatus includes a light source, a light valve, and a lens module. The light source provides a light beam. The light valve converts the light beam into an image beam. The lens module converts the image beam into a projecting beam and includes a lens and a locking structure. The locking structure is connected to the lens and includes a first plate, a second plate, a moving element, and a first pushing element. The second plate is disposed between the first plate and the lens and firmly fixed to the lens. A groove is formed between the first plate and the second plate, and the groove has withstanding holes arranged along a first direction. The moving element is disposed between the first plate and the second plate. The first pushing element is disposed between the moving element and the second plate.