Projection Device Integrated Optical Plate Heat Dissipation
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Solution Overview
Problem
The complexity of the light source and projection unit structure in compact projection devices makes it challenging to simplify their design and functionality.
Innovation Solution
A projection device comprising a thermally conductive plate with integrated light emitting, modulation, and polarized light separation elements, where the light emitting element emits light parallel to the plate, and the polarized light separation element bends light modulated by the reflective liquid crystal element away from the plate, with a cooling unit to manage heat.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Volume of moving object
If the light source and projection unit are integrated into a compact structure, then the device size is reduced, but the structure becomes complicated
Solution Approach 1:
The patent integrates the light emitting element, modulation element, and polarized light separation element onto a single thermally conductive plate, merging multiple optical components into one integrated assembly. This reduces the overall device volume while managing the complexity through systematic integration rather than random component placement.
Solution Approach 2:
The thermally conductive plate serves multiple functions simultaneously: it acts as a mounting substrate for optical components, a heat dissipation pathway for the light emitting element, and a structural support for the integrated assembly. This multi-functionality reduces the need for separate components, simplifying the overall structure.
2Volume of moving object
If multiple optical components are integrated on a plate, then the device is more compact, but heat dissipation becomes challenging
Solution Approach 1:
The patent extracts the thermal management function from the optical integration by introducing a dedicated cooling unit that connects to the thermally conductive plate. This separates the heat dissipation pathway from the optical component arrangement, allowing compact integration while maintaining effective cooling.
Solution Approach 2:
The thermally conductive plate acts as an intermediary between the heat-generating light emitting element and the cooling unit. It efficiently conducts heat from the light source to the cooling system, enabling compact device design while ensuring adequate heat dissipation through this thermal intermediary.
3Device complexity
If the light emitting element emits light parallel to the plate, then the optical path is simplified, but the projection function is reduced
Solution Approach 1:
The patent introduces a movable bending member that can shift between different positions to dynamically change the optical path. When the bending member is in the first position, it allows parallel light emission for simplified optical paths. When shifted to the second position, it enables projection function by bending light at an angle. This dynamic reconfiguration resolves the contradiction between optical simplicity and projection capability.
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
This configuration simplifies the construction of the light source and projection unit, enhancing efficiency and reducing costs by integrating key components and improving heat dissipation, resulting in a more compact and effective projection system.
Implementation Method 1
a light emitting element that is disposed upon the plate shaped member and emits light
Implementation Method 2
a bending member that bends light from the light emitting element into an orientation parallel to the plate shaped member
Implementation Method 3
a polarized light separation element that bends light modulated by the modulation element into an orientation going away from the plate shaped member
Implementation Method 4
a cooling unit that cools the plate shaped member from a surface on which the light emitting element is disposed
Data Source
AI summary
An electronic device comprises a projector that is configured to project an image and a control unit. The control unit is configured to control an orientation of the image to be projected to a first orientation when the electronic device is in a first attitude, and to control the orientation of the image to be projected to a second orientation different from the first orientation when the electronic device is in a second attitude different from the first attitude.