Alces Technology, Inc.

Matthew A Leone

David M Bloom

Compact 3D depth capture systems are based on a 3D system driver/interface, a 3D system camera, and a 3D system projector. The systems are compatible with integration in to mobile electronic devices such as smart phones and tablet computers.

Compact 3D depth capture systems

Brightness-by-column grayscale and spatial &#x3a3;-&#x394; modulation grayscale allow grayscale patterns to be produced using a binary spatial light modulator as fast as the bright/dark switching speed.

Grayscale patterns from binary spatial light modulators

On/off digital drive signals are used to create arbitrary spatial and temporal ribbon movement patterns in MEMS ribbon arrays.

Digital drive signals for analog MEMS ribbon arrays

A fast spatial light modulator based on a linear MEMS ribbon array enables a depth capture system to operate in structured light and time-of-flight modes. Time-of-flight depth information may be used to phase unwrap structured light depth information. Combined structured light and time-of-flight systems offer precise depth resolution over a wide range of distances.

Structured light and time of flight depth capture with a MEMS ribbon linear array spatial light modulator

A structured light system based on a fast, linear array light modulator and an anamorphic optical system captures three-dimensional shape information at high rates and has strong resistance to interference from ambient light. A structured light system having a modulated light source offers improved signal to noise ratios. A wand permits single point detection of patterns in structured light systems.

Structured light system

A series bias voltage increases the sensitivity of a MEMS ribbon to control signal voltages. This effect is obtained because of the nonlinear dependence of ribbon deflection on applied voltage. The resulting low-voltage operation of MEMS ribbons makes them more compatible with high speed electronics.

Low voltage drive for MEMS ribbon array light modulators

Single-chip, multiple-linear-array MEMS form the basis for high-resolution, high-frame-rate video displays.

Multiple-linear-array MEMS display chips

A display system is based on a linear array phase modulator and a phase edge discriminator optical system.

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Jackson, WY, United States of America

Matthew A Leone