Integrated Laser Projection Optics for Uniform Beam and Compact Layout
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Solution Overview
Problem
Conventional laser projection apparatuses have a complex structure with many components, which hinders miniaturization and can lead to reduced uniformity and increased overheating of illumination beams, affecting display quality.
Innovation Solution
The laser source assembly integrates a light homogenizing component with a collimating portion and a reflecting portion to collimate and homogenize laser beams within a sealed space, eliminating the need for additional light pipes and optimizing beam uniformity.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Device complexity
If conventional laser projection apparatus use separate light pipes for beam expansion and homogenization, then the structural complexity increases, but the device size cannot be reduced
Solution Approach 1:
The patent combines the light pipe, beam expansion lens, and homogenization component into a single integrated structure. The light pipe body itself serves as the homogenization component, eliminating the need for separate components. This merging reduces both structural complexity and device volume while maintaining the required optical functions of beam expansion and uniformity improvement.
2Quantity of substance
If conventional designs use multiple separate optical components, then the number of components increases, but heat dissipation efficiency decreases
Solution Approach 1:
The patent integrates multiple optical functions into a single light pipe component structure. By combining beam expansion and homogenization functions into one component, the number of components is reduced, and heat dissipation pathways are simplified, improving overall heat dissipation efficiency.
Solution Approach 2:
The light pipe body acts as an intermediary structure that simultaneously performs beam expansion, homogenization, and heat dissipation functions. This intermediary structure eliminates the need for multiple separate components and improves thermal management through integrated design.
3Manufacturing precision
If conventional apparatus use separate homogenization components, then the uniformity of illumination beams improves, but the number of components increases
Solution Approach 1:
The patent integrates the homogenization function directly into the light pipe body structure. The light pipe body itself serves as the homogenization component, maintaining beam uniformity while eliminating the need for separate homogenization components. This reduces the total number of components while preserving the required optical performance.
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 integration improves the uniformity and luminance of illumination beams, reduces the number of components, and enhances heat dissipation, facilitating miniaturization and better display quality.
Implementation Method 1
The first reflecting portion is located on a laser-exit side of the first light-emitting chip and configured to guide the first laser beam to a direction away from the base plate
Implementation Method 2
The first collimating portion is located in the sealed space and configured to collimate the first laser beam, so as to transmit the first laser beam to the light homogenizing component in a direction perpendicular to the base plate
Implementation Method 3
The light homogenizing component is disposed on a side of the frame away from the base plate and configured to homogenize the first laser beam and propagate the first laser beam out of the sealed space
Implementation Method 4
The first convex lens is located on a side of the body proximate to the base plate. The second convex lens is located on a side of the body away from the base plate and disposed opposite to the first convex lens
Data Source
AI summary
A laser projection apparatus includes a laser source assembly, a light modulation assembly, and a projection lens. The laser source assembly includes a laser device. The laser device includes a base plate, a frame, a first light-emitting chip, a first reflecting portion, a first collimating portion, and a light homogenizing component. The first light-emitting chip is configured to emit a first laser beam. The first collimating portion is located in a sealed space and configured to collimate the first laser beam, so as to transmit the first laser beam to the light homogenizing component in a direction perpendicular to the base plate. The light homogenizing component is disposed on a side of the frame away from the base plate and configured to homogenize the first laser beam and propagate the first laser beam out of the sealed space.