Laser Assembly Beam-Shaping Component for Miniaturization
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Solution Overview
Problem
Laser projection technologies face challenges in miniaturizing the design of laser assemblies due to the large divergence angles of light beams emitted by individual lasers, which require larger optical components, hindering the homogeneity and efficiency of light transmission.
Innovation Solution
The laser assembly incorporates a beam-shaping component with a light incident surface that adjusts the divergence angle of light beams along both the fast and slow axis directions, reducing the maximum width of the light beam cross-section and allowing for a miniaturized design by integrating multiple lasers in an array configuration with mounting grooves on a support structure.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Volume of moving object
If the divergence angle of light beams is reduced using beam-shaping components, then the size of optical components can be minimized, but the device complexity increases due to additional optical elements
Solution Approach 1:
The patent combines multiple functions into the beam-shaping component: it simultaneously shapes the beam profile, adjusts divergence angles in both fast and slow axis directions, and positions the corrected beam. This integration reduces the number of separate optical elements needed while achieving comprehensive beam control for miniaturization
Solution Approach 2:
The beam-shaping component utilizes adjustable parameters including the curvature radii of first and second light incident surfaces, and the distance between these surfaces. By optimizing these parameters, the component achieves effective beam divergence control and size reduction without requiring complex multi-element systems
2Illumination intensity
If multiple lasers are integrated in an array configuration, then the brightness and image quality are improved, but the homogeneity of light transmission deteriorates due to large divergence angles
Solution Approach 1:
The beam-shaping component applies different optical corrections to different regions of the beam cross-section. By designing asymmetric light incident surfaces with specific curvature radii, it locally adjusts the beam profile and divergence angles in fast and slow axis directions, ensuring uniform light transmission characteristics across the entire array output while maintaining high brightness
Solution Approach 2:
The patent optimizes specific geometric parameters of the beam-shaping component including the curvature radii of light incident surfaces and the spacing between surfaces. These parameter adjustments enable the component to correct beam divergence uniformly across multiple lasers in the array, achieving both high brightness and homogeneous light transmission
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 solution enhances light homogeneity and reduces the size of optical components, enabling a compact and efficient laser projection apparatus while maintaining sufficient brightness and image quality.
Implementation Method 1
the light incident surface is configured to transmit the light beam emitted from the light emitting component toward the opening of the mounting groove
Implementation Method 2
the light incident surface is configured to change a divergence angle of the light beam along at least one of a fast axis direction or a slow axis direction of the light beam
Data Source
AI summary
The present disclosure describes a laser assembly. The laser assembly includes a support comprising at least one mounting groove. The laser assembly includes at least one laser mounted in the at least one mounting groove in a one-to-one correspondence. Each of the at least one laser includes a light emitting component configured to emit a light beam. A beam-shaping component is disposed at a light path of the light emitting component. The beam-shaping component includes a light incident surface disposed close to the light emitting component, the light incident surface is configured to transmit the light beam emitted from the light emitting component toward an opening of the mounting groove, and the light incident surface is configured to change a divergence angle of the light beam along at least one of a fast axis direction or a slow axis direction of the light beam.