Rotating Lens Assembly for Multi-Directional Projection
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Solution Overview
Problem
Conventional projection devices are limited to single-direction projection due to fixed reflective sheets, preventing multi-directional projection capabilities.
Innovation Solution
A rotating subassembly that adjusts the positional relationship between reflective sheets and lenses, allowing the projection device to change the direction of outgoing light by rotating the second lens component relative to the first, enabling multi-directional projection.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Adaptability or versatility
If two reflective sheets are fixed in the lens, then the structure is simple and stable, but the projection device can only realize projection in one direction and cannot achieve multi-directional projection
Solution Approach 1:
The patent applies the dynamics principle by making the second lens component rotatable relative to the first lens component. The rotating subassembly enables the second lens component to rotate around an axis, dynamically changing the angular position of the reflective sheets and thereby achieving multi-directional projection. This transforms the fixed structure into a dynamic one that can adapt to different projection directions.
Solution Approach 2:
The patent divides the lens into two separate components: a first lens component and a second lens component. This segmentation allows the second lens component to be independently rotated relative to the first, enabling change in projection direction without affecting the overall structural stability. The segmentation principle resolves the contradiction by allowing modular adjustment of projection direction.
2Adaptability or versatility
If the reflective sheets are fixed in the lens, then the manufacturing is simple, but the device lacks flexibility for multi-directional projection
Solution Approach 1:
The rotating subassembly introduces dynamic capability to the system, allowing the second lens component to rotate and change projection direction. While this adds some manufacturing complexity compared to a completely fixed structure, it maintains relative simplicity by using a standardized rotational mechanism rather than complex adjustable assemblies.
Solution Approach 2:
The patent makes the lens system multi-functional by enabling it to project in multiple directions. The second lens component serves multiple functions: it can be positioned at different angular orientations to achieve different projection directions while maintaining the same optical path structure. This universality principle allows a single device to perform multiple projection functions.
3Adaptability or versatility
If a rotating subassembly is introduced to enable multi-directional projection, then projection flexibility is improved, but the device complexity increases
Solution Approach 1:
The rotating subassembly implements dynamics by enabling rotational movement of the second lens component. This single rotational degree of freedom provides multi-directional projection capability while adding minimal structural complexity compared to more complex adjustable mechanisms. The rotational axis is designed to pass through the optical center, simplifying the overall structure.
Solution Approach 2:
The patent merges the rotation function with the lens structure itself. The second lens component is integrated with the rotating subassembly, combining the optical function and the adjustment function into a single integrated unit. This merging reduces the need for separate adjustment mechanisms and simplifies the overall device structure.
Applied Scientific Principles
This section explains which scientific principles are used to turn an abstract innovation direction into a practical engineering solution.
Function Achieved in This Case
Enables flexible and multi-directional projection by altering the angle of the outgoing light beam, enhancing the projection device's directional capabilities without requiring mechanical adjustments in the reflective sheets themselves.
Implementation Method 1
The light emitted by the light source is reflected by two reflective sheets
Implementation Method 2
The light emitted by the light source is reflected by two reflective sheets
Implementation Method 3
enters into the diffractive optical element, and is emitted from the diffractive optical element to form a projected image
Data Source
AI summary
A projection device includes a first lens component, a second lens component, a first reflecting sheet embedded in the first lens component, a second reflecting sheet embedded in the second lens component, a light source opposite to the first reflecting sheet, a diffractive optical element opposite to the second reflecting sheet, and a rotating subassembly. The first lens component and the second lens component are not integral. The second reflecting sheet is opposite to the first reflecting sheet. The rotating subassembly can drive the second lens component to rotate relative to the first lens component. The projection device can realize multi-directional projection of images.