Laser Optical Path Layout for Compact High-Luminance Projection
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Solution Overview
Problem
The existing laser light systems for projection equipment have a complex and large structure due to the need for separate light paths for different colored fluorescences, leading to low luminance and difficulty in miniaturization.
Innovation Solution
A laser light system that combines a monochromatic laser with a beam combiner and fluorescence assembly to generate white light by synchronizing monochromatic fluorescence and laser beams without separate color-specific light paths, using a compact arrangement of components around a beam combiner.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Adaptability or versatility
If separate light paths are used for different colored fluorescences, then color separation is achieved, but device complexity and size increase
Solution Approach 1:
The patent merges the light paths for different colored fluorescences into a single common path. The beam combiner combines monochromatic fluorescence and laser beams that would traditionally require separate paths, allowing both to converge through one unified optical route to the projection lens, thereby reducing structural complexity while maintaining color separation capability
Solution Approach 2:
The beam combiner serves multiple functions simultaneously: it combines different colored fluorescences, integrates laser beams, and directs all light to the projection lens. This multi-functional component replaces what would traditionally require multiple separate optical components and paths, reducing overall device complexity
2Adaptability or versatility
If separate light paths are used for different colored fluorescences, then color separation is achieved, but system size increases
Solution Approach 1:
By merging the optical paths into a single common route, the patent eliminates the need for multiple separate light path channels. The beam combiner integrates all fluorescent and laser beams into one unified path, significantly reducing the spatial footprint and overall system size while maintaining the ability to produce different colors
3Adaptability or versatility
If complex light path structure is used, then color separation is achieved, but luminance decreases
Solution Approach 1:
The beam combiner merges multiple light sources (fluorescence and laser beams) into a single unified beam path, allowing their light energies to combine constructively. This merging approach increases the total luminance at the projection lens compared to separate paths, as all light contributes to the same output beam rather than being distributed across multiple independent paths
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 approach achieves miniaturization of the laser light system and enhances luminance by simplifying the light path structure, allowing for improved projection performance in compact projection equipment.
Implementation Method 1
the fluorescence assembly generates a fluorescence upon excitation of the first light beam
Implementation Method 2
the fluorescence is reflected to the second region by the fluorescence assembly and is further reflected into a direction towards a light outlet by the second region
Data Source
AI summary
Provided is a laser optical path system, including: a laser, a beam combiner, a loop guide assembly, and a fluorescence assembly; wherein a light beam emitted by the laser includes a first light beam passing through the first region and irradiating to the fluorescence assembly, wherein the fluorescence assembly generates a fluorescence upon excitation of the first light beam, and the fluorescence is reflected to the second region by the fluorescence assembly, and is further reflected into a direction towards a light outlet by the second region; and the light beam emitted by the laser further includes a second light beam reflected to the loop guide assembly by the first region, wherein the second light beam is further reflected to the first region by the loop guide assembly, passes through the first region, and irradiates to the direction towards the light outlet in synchronization with the fluorescence.