Light Source Apparatus Parallel Emission Surface Arrangement
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Solution Overview
Problem
Conventional light source apparatuses for projection-type image display systems have inefficiencies due to non-light emitting areas, leading to increased size and wasted space when multiple light emitting apparatuses are combined to achieve high luminance.
Innovation Solution
The integration of multiple light emitting apparatuses with substrates, light emitting devices, and lenses, where the emission surfaces are arranged in parallel with minimized distance between light emitting areas to overlap non-light emitting areas, allowing for efficient combination of light without wasting space.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Illumination intensity
If multiple light emitting apparatuses are arranged to increase total light flux, then luminance is improved, but the size of the light source apparatus increases due to non-light emitting areas
Solution Approach 1:
The patent transitions from a two-dimensional planar arrangement of light emitting apparatuses to a three-dimensional configuration where emission surfaces are positioned at different depths along the optical axis. By arranging emission surfaces parallel to each other with predetermined distances and overlapping their projections, the system utilizes the third dimension (depth) to pack multiple light sources more densely, reducing the overall footprint while maintaining high total light flux output.
Solution Approach 2:
The patent implements a nested arrangement where light emitting apparatuses are positioned such that their emission surfaces overlap when viewed along the optical axis. This nesting strategy allows smaller light emitting areas to be embedded within the projected area of larger apparatuses, maximizing space utilization and reducing the total apparatus size while accumulating light flux from multiple sources.
2Area of stationary object
If light emitting apparatuses are positioned closer to reduce size, then space utilization is improved, but optical interference may occur between adjacent light sources
Solution Approach 1:
The patent applies local quality by assigning different spatial positions and orientations to different light emitting apparatuses within the array. Each apparatus is positioned at a specific depth and angle, creating localized emission zones that minimize overlap and interference. This heterogeneous arrangement ensures that while apparatuses are closely packed, their individual light paths remain distinct and controllable.
Solution Approach 2:
The patent introduces optical elements such as lenses and mirrors as intermediaries between the light emitting apparatuses and the final light flux. These intermediary components collimate, focus, or redirect light from each apparatus, preventing direct optical interference between adjacent sources while maintaining the compact three-dimensional arrangement. The intermediaries act as mediators that manage light paths in the dense configuration.
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 reduces the size of the light source apparatus while maintaining high luminance by bringing light emitting areas closer together, resulting in a smaller and more efficient light source.
Implementation Method 1
a plurality of lenses 53 corresponding to the plurality of light emitting devices 52
Data Source
AI summary
A light source apparatus includes a plurality of light emitting apparatuses. Each of the light emitting apparatuses includes a plurality of light emitting devices each of which has a light emitting area and a non-light emitting area on an emission surface thereof that emits light. At least two light emitting apparatuses of the light emitting apparatuses constitute a light emitting apparatus group disposed such that the emission surfaces of the respective light emitting apparatuses are parallel to each other with a predetermined distance, and that a distance between light emitting areas of the respective light emitting apparatuses when viewed along a direction perpendicular to the emission surfaces of the at least two of the light emitting apparatuses is shorter than a distance between the light emitting areas of the respective light emitting apparatuses when the emission surfaces of the respective light emitting apparatuses are on the same plane.