Multi-Projector Optical Platform for Stable 3D Pattern Projection
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Solution Overview
Problem
Existing hardware stereo 3D systems face issues with projector assembly variations, thermal expansion, heat generation, fixed pattern quality, and erroneous detection due to non-random dot patterns, leading to performance degradation and reliability concerns.
Innovation Solution
An optical platform with multiple light emitting projectors, each equipped with a controllable switch, allows dynamic switching between projectors during operation to enhance projection performance, addressing these issues.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If two identical projectors are used to improve pattern quality, then pattern reliability is improved, but device complexity increases
Solution Approach 1:
The patent implements dynamic switching between multiple projectors using controllable switches, allowing the system to adaptively select optimal projector combinations based on real-time performance requirements. This dynamic configuration enables the system to maintain high pattern reliability while managing device complexity through intelligent control rather than permanent dual-projector operation.
Solution Approach 2:
The system changes operational parameters by switching between different projector configurations (single projector, dual projectors, or combinations) based on detection quality requirements. This parameter change approach allows the system to optimize pattern reliability for specific detection scenarios without permanently increasing device complexity.
2Productivity
If projectors operate continuously, then productivity is maintained, but thermal expansion and heat generation degrade pattern quality
Solution Approach 1:
The patent implements periodic switching between multiple projectors, allowing individual projectors to cycle between active and inactive states. This periodic action enables heat dissipation during inactive periods while maintaining continuous productivity through projector alternation, thereby preventing thermal expansion-related pattern quality degradation.
Solution Approach 2:
The system proactively switches projectors before excessive heat accumulation occurs, using the inactive projector as a pre-prepared backup. This beforehand cushioning approach prevents thermal degradation by transitioning to a cooler projector before pattern quality is significantly affected by heat.
3Ease of manufacture
If a fixed dot pattern is used, then ease of manufacture is improved, but detection accuracy deteriorates due to erroneous detections
Solution Approach 1:
The patent makes the projection pattern dynamic by switching between multiple projectors that can project different dot patterns. This dynamic pattern variation maintains ease of manufacture through standardized projector components while improving detection accuracy by providing diverse patterns that reduce erroneous detections in different scenarios.
4Ease of manufacture
If assembly tolerances are relaxed, then ease of manufacture is improved, but optical performance deteriorates
Solution Approach 1:
The patent applies local quality by having multiple projectors with potentially different assembly characteristics, where each projector's specific optical performance is compensated by selective switching. This approach allows relaxed assembly tolerances overall while maintaining high optical performance through intelligent selection of the best-performing projector for each operation.
Data Source
AI summary
An optical platform is provided, configured to project an image onto a target, wherein the optical platform comprises a plurality of optical projectors, each configured to project an image onto a target, and wherein each of the plurality of optical projectors is associated with a controllable switch configured to enable or disable operation of a respective optical projector from among the plurality of optical projectors, thereby enabling switching between operative optical projectors while the optical platform remains operative.