Depth data measuring device and structured light projection unit
AssigneeShanghai Percipio Technology Limited
InventorsMinjie Wang, Yushi Liang
Life of this patent
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Abstract
Disclosed is a depth data measuring device comprising a structured light projection unit and an imaging unit. The projection unit includes a laser generator and an LCOS (Liquid Crystal on Silicon) element for generating structured light to illuminate a subject. The LCOS enables fine projection and supports various patterns (e.g., speckles, stripes), enhancing depth imaging accuracy across scenarios. Integration with a VCSEL structure reduces power consumption and allows miniaturization. Additionally, multiple photosensitive units sharing part of the optical path are introduced to shorten the imaging time required for multi-frame depth calculation, thereby improving the frame rate.
Claims15
A depth data measuring device comprising:
- a projection unit configured to project a set of structured light with different patterns to a subject in a shooting area, the set of structured light includes at least two structured light with different patterns
- one or two image sensors configured for depth imaging, and each image sensor among the one or two image sensors is configured to photograph the subject and output a set of image frames illuminated by the set of structured light for a single depth data calculation of the shooting area,
- wherein the projection unit comprises:
- a laser configured to generate laser light;
- a LCOS (Liquid Crystal on Silicon) element configured to receive the generated laser light and generate the set of structured light,
- wherein each image sensor among the one or two image sensors comprises at least two sub-image sensors sharing at least part of an optical path, and the at least two sub-image sensors are configured to respectively image different patterns of structured light successively projected by the projection unit.
Dependencies are inferred from the claim text.