Abstract:
A failsafe pulsed laser driver and method for using the same are disclosed. In one embodiment, an apparatus comprises a laser array having a plurality of lasers; and a laser driver coupled to the laser array, wherein the laser driver comprises a current limiter to provide a maximum current at or below a threshold current of lasers in the laser array or at a current level to meet laser safety requirements under circuit failure conditions; one or more capacitors coupled to current limiter and the laser array, the one or more capacitors to be charged in response to current from the current limiter; and a switch coupled to the one or more capacitors operable to cause current from the one or more capacitors to flow through the laser array.
Abstract:
Systems, devices, and techniques related to projecting dynamic feature patterns onto a scene for use in stereoscopic imaging are discussed. Such techniques may include implementing a dynamic transmissive element in an optical path between a projector and the scene to modify a static pattern emitted from the projector to illuminate the scene with a dynamic pattern.
Abstract:
Embodiments of a device, system, method and other techniques are described for improved display calibration. An apparatus for display calibration may comprise, for example an optical waveguide comprising an entrance portion and an exit portion at different locations on a base portion of the apparatus, the optical waveguide to guide light output from a display of the apparatus arranged in a lid portion of the apparatus to a camera arranged in the lid portion of the apparatus and calibration logic at least a portion of which is in hardware, the calibration logic to measure one or more color attributes of the light output from the display and to calibrate one or more parameters of the display based on the measured color attributes. Other embodiments are described.
Abstract:
Apparatus, computer-readable storage medium, and method associated with human computer interaction. In embodiments, a computing device may include a plurality of sensors, including a plurality of light sources and a camera, to create a three dimensional (3-D) interaction region within which to track individual finger positions of a user of the computing device. The light sources and the camera may be complementarily disposed for the camera to capture the finger or hand positions. The computing device may further include a 3-D interaction module configured to analyze the individual finger positions within the 3-D interaction region, the individual finger movements captured by the camera, to detect a gesture based on a result of the analysis, and to execute a user control action corresponding to the gesture detected. Other embodiments may be described and/or claimed.
Abstract:
Techniques related to generating holographic images are discussed. Such techniques include application of a hybrid system including a pre-trained deep neural network and a subsequent iterative process using a suitable propagation model to generate diffraction pattern image data for a target holographic image such that the diffraction pattern image data is to generate a holographic image when implemented via a holographic display.
Abstract:
Methods and apparatus to calibrate spatial light modulators are disclosed. Examples include processor circuitry to execute and/or instantiate instructions to provide a greyscale image to a spatial light modulator (SLM) to define voltages to be applied to individual pixels of the SLM. The voltages associated with pixel values in the greyscale image. The pixel values arranged in a double-slit grating pattern. The SLM to produce an interference pattern based on the double-slit grating pattern. The processor circuitry is to determine a phase difference between first and second gratings of the double-slit grating pattern based on the interference pattern. The processor circuitry is to generate a phase curvature based on the phase difference.
Abstract:
A light pattern projector with a pattern mask to spatially modulate an intensity of a wideband illumination source, such as an LED, and a projector lens to reimage the spatially modulated emission onto regions of a scene that is to be captured with an image sensor. The projector lens may comprise a microlens array (MLA) including a first lenslet to reimage the spatially modulated emission onto a first portion of a scene, and a second lenslet to reimage the spatially modulated emission onto a first portion of a scene. The MLA may have a fly's eye architecture with convex curvature over a diameter of the projector lens in addition to the lenslet curvature. The pattern mask may be an amplitude mask comprising a mask pattern of high and low amplitude transmittance regions. In the alternative, the pattern mask may be a phase mask, such as a refractive or diffractive mask.
Abstract:
A light pattern projector with a pattern mask to spatially modulate an intensity of a wideband illumination source, such as an LED, and a projector lens to reimage the spatially modulated emission onto regions of a scene that is to be captured with an image sensor. The projector lens may comprise a microlens array (MLA) including a first lenslet to reimage the spatially modulated emission onto a first portion of a scene, and a second lenslet to reimage the spatially modulated emission onto a first portion of a scene. The MLA may have a fly's eye architecture with convex curvature over a diameter of the projector lens in addition to the lenslet curvature. The pattern mask may be an amplitude mask comprising a mask pattern of high and low amplitude transmittance regions. In the alternative, the pattern mask may be a phase mask, such as a refractive or diffractive mask.
Abstract:
A failsafe pulsed laser driver and method for using the same are disclosed. In one embodiment, an apparatus comprises a laser array having a plurality of lasers; and a laser driver coupled to the laser array, wherein the laser driver comprises a current limiter to provide a maximum current at or below a threshold current of lasers in the laser array or at a current level to meet laser safety requirements under circuit failure conditions; one or more capacitors coupled to current limiter and the laser array, the one or more capacitors to be charged in response to current from the current limiter; and a switch coupled to the one or more capacitors operable to cause current from the one or more capacitors to flow through the laser array.