Range-Image Light Sources With Segmented Lens Shielding
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Solution Overview
Problem
Existing light emitting devices with multiple light sources for range-image capturing face challenges in improving light distribution properties while maintaining a compact size, leading to complex optical conditions and potential deviations in light distribution due to close spacing of light sources and lenses.
Innovation Solution
A configuration with a shield member having openings that block unwanted light propagation and an optical member with lenses, allowing controlled light passage, simplifying optical conditions and reducing component count while maintaining device size.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Volume of moving object
If multiple light sources are arranged closely to maintain compact device size, then the device size is reduced, but the light distribution property deteriorates due to complex optical conditions and potential light leakage between adjacent lenses
Solution Approach 1:
The patent introduces a shield member with multiple openings that segments the optical space between adjacent light sources and lenses. Each opening is positioned to allow light from a specific light source to reach its corresponding lens while blocking light from adjacent light sources, thereby preventing optical interference and maintaining desired light distribution properties in a compact configuration
Solution Approach 2:
The shield member acts as an intermediary element between the light sources and lenses. It selectively transmits and blocks light paths, ensuring that each lens receives light primarily from its associated light source while preventing unwanted light from adjacent sources, thus simplifying the optical conditions without requiring larger spacing
2Volume of moving object
If multiple light sources are arranged closely to maintain compact device size, then the device size is reduced, but the optical conditions become more complex and difficult to control
Solution Approach 1:
The shield member with multiple openings segments the optical paths, creating distinct and controlled light channels for each light source-lens pair. This segmentation simplifies the optical conditions by preventing cross-interference, making the system easier to design and control despite the compact arrangement of multiple light sources
Solution Approach 2:
The shield member extracts and removes unwanted light paths from the optical system by blocking light that would otherwise travel from one light source to adjacent lenses. This eliminates complex optical interactions and simplifies the overall optical conditions while maintaining compact dimensions
3Volume of moving object
If the interval between light sources and lenses is reduced to maintain compact size, then the device size is reduced, but light from one light source may enter adjacent lenses causing unexpected deviations in light distribution
Solution Approach 1:
The shield member with multiple openings creates segmented optical zones that physically separate the light paths from different light sources. Each opening is positioned to allow light from its associated light source to reach the corresponding lens while blocking light from adjacent light sources, ensuring reliable and accurate light distribution even when light sources are closely spaced
Solution Approach 2:
The shield member performs preliminary blocking of unwanted light paths before the light can reach adjacent lenses. By placing the shield member between the light sources and lenses, it preemptively prevents cross-contamination of light, ensuring that each lens receives only the intended light from its associated source, thus maintaining light distribution accuracy in compact configurations
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
Enhances light distribution properties and efficiency by blocking unwanted light paths, simplifying optical arrangements, and reducing component count in the light emitting device.
Implementation Method 1
a shield member configured to block spatial propagation of noise with respect to the electronic component
Implementation Method 2
an optical member having multiple lenses allowing passage of the light
Data Source
AI summary
Multiple light sources are configured to emit light to be used for range-image capturing. An electronic component is associated with operations of the light sources. A shield member is configured to block spatial propagation of noise with respect to the electronic component. An optical member has multiple lenses allowing passage of the light. The shield member is formed with multiple openings. The openings are arranged so as to allow at least a portion of light emitted from each of the light sources to pass toward an associated one of the lenses.