Projector Integrating DOE for 3D Depth Sensing and Illumination
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Solution Overview
Problem
Current projectors designed for 3D image generation require separate components for illumination and pattern projection, increasing design complexity and manufacturing costs.
Innovation Solution
A projector incorporating a light-emitting device, a lens module with a diffuser and lens parts, and a diffraction optical element (DOE) that generates both uniform illumination and a pattern of dots for 3D image creation, allowing the projector to serve as both illuminator and pattern generator.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If separate components (projector and light illuminator) are used for pattern projection and illumination, then 3D image generation capability is achieved, but device complexity and manufacturing costs increase
Solution Approach 1:
The patent combines the projector and light illuminator into a single integrated device. The projector includes both a pattern projection module (with laser emitter and DOE) and an illumination module (with illuminator and diffuser), merging two previously separate components into one unified structure that performs both 3D pattern projection and ambient illumination functions simultaneously
Solution Approach 2:
The integrated projector serves multiple functions: it projects 3D patterns for depth sensing and simultaneously provides ambient illumination for the camera. This multi-functionality eliminates the need for separate dedicated illuminator and projector components, reducing overall device complexity while maintaining both 3D imaging and illumination capabilities
2Reliability
If separate components (projector and light illuminator) are used for pattern projection and illumination, then 3D image generation capability is achieved, but manufacturing costs increase
Solution Approach 1:
The patent combines the projector and light illuminator into a single integrated device. The projector includes both a pattern projection module (with laser emitter and DOE) and an illumination module (with illuminator and diffuser), merging two previously separate components into one unified structure that performs both 3D pattern projection and ambient illumination functions simultaneously
Solution Approach 2:
The integrated projector serves multiple functions: it projects 3D patterns for depth sensing and simultaneously provides ambient illumination for the camera. This multi-functionality eliminates the need for separate dedicated illuminator and projector components, reducing overall device complexity while maintaining both 3D imaging and illumination capabilities
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 integrated solution simplifies electronic device design, reduces manufacturing costs, and effectively generates 3D images by projecting uniform illumination with a pattern of dots, enhancing ambient light and image clarity.
Implementation Method 1
the at least one laser beam passes through the diffuser part and the DOE to illuminate a field of view
Implementation Method 2
the at least one laser beam passes through the lens part and the DOE to generate a plurality of dots
Data Source
AI summary
The present invention provides a projector, wherein the projector includes a light-emitting device, a lens module having a diffuser part and a lens part, and a DOE. In the operations of the projector, the light-emitting device is arranged for generating at least one laser beam, and the at least one laser beam passes through the diffuser part and the DOE to illuminate a field of view, and the at least one laser beam passes through the lens part and the DOE to generate a plurality of dots.