Projector Light Source Module Compact Arrangement
Find Innovative SolutionsGenerate Solutions
Solution Overview
Problem
The challenge in projector design is to reduce the overall size of the light source module while maintaining high light emission efficiency, as the increasing demand for brightness requires more light source devices, leading to space constraints.
Innovation Solution
The solution involves a light source module with non-parallel reflecting surfaces for first and second light emitting elements, which are disposed on opposite sides of light combining elements, allowing for efficient beam combination without stacking, and orthographic projections of light combining elements are connected in sequence to minimize size.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Illumination intensity
If the number of light source devices is increased to meet high brightness demand, then light emission efficiency is improved, but the overall size of the light source module increases
Solution Approach 1:
The patent transitions from stacking light source devices vertically (one dimension) to arranging them side-by-side horizontally (another dimension). The light combining elements are positioned adjacent to each other in the horizontal direction, with reflecting surfaces oriented to direct beams along the light combining direction, thereby increasing light emission capacity without increasing the vertical height of the module.
Solution Approach 2:
Multiple light beams from different light source devices are merged into a single combined beam through the light combining elements. The reflecting surfaces of these elements are configured to redirect beams from first and second light source devices along the same light combining direction, effectively combining multiple light paths into one unified output path.
2Illumination intensity
If light source devices are stacked to increase light output, then light emission efficiency is improved, but layout space is excessive
Solution Approach 1:
Instead of extending the layout space vertically through stacking, the patent arranges light source devices and light combining elements side-by-side in the horizontal direction. The orthographic projections of light combining elements on a reference plane perpendicular to the light combining direction are connected in sequence, utilizing horizontal space efficiently without excessive vertical extension.
Solution Approach 2:
The light combining elements have non-parallel first and second reflecting surfaces, creating an asymmetric configuration that allows light beams from different directions (first and second light source devices) to be redirected along the same light combining direction. This asymmetric arrangement optimizes space utilization while maintaining high light output.
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 prevents excessive size increase and ensures close arrangement of light combining elements, reducing the overall size of the light source module while maintaining high light emission efficiency.
Implementation Method 1
The first reflecting surface is adapted to reflect the first illuminating beam so that the first illuminating beam is transmitted along a light combining direction
Implementation Method 2
The second reflecting surface is adapted to reflect the second illuminating beam so that the second illuminating beam is transmitted along the light combining direction
Data Source
AI summary
A light source module includes a plurality of light combining elements, a plurality of first light emitting elements, and a plurality of second light emitting elements. Each of the light combining elements has a first reflecting surface and a second reflecting surface. Each of the first light emitting elements emits a first illuminating beam, and one of the first reflecting surfaces reflects the first illuminating beam to be transmitted along a light combining direction. Orthographic projections of the light combining elements on a reference plane are connected in sequence, and the reference plane is perpendicular to the light combining direction. Each of the second light emitting elements emits a second illuminating beam, and one of the second reflecting surfaces reflects the second illuminating beam to be transmitted along the light combining direction. In addition, a projector having the light source module is also provided.