摘要:
A coded pattern projector apparatus comprises a surface-emitting array of emitters comprising a plurality of emitters where each of the plurality of emitters generates one of a plurality of optical beams in response to an electrical drive signal applied to a respective electrical input of each of the plurality of emitters. A first optical element projects each the plurality of optical beams generated by the surface-emitting array of emitters. A second optical element collimates the plurality of optical beams in a first dimension and diverges the plurality of optical beams in a second dimension such that the plurality of optical beams form at least one stripe patterns. A controller has a plurality of electrical outputs, each of the plurality of electrical outputs is connected to a respective electrical inputs of each of the plurality of emitters. The controller generating desired electrical drive signals that produce a desired coded stripe pattern.
摘要:
The invention provides an apparatus for fabricating a periodic micro-pattern by laser beams. The apparatus includes an ultrafast laser light source configured to generate an output laser beam. A diffraction optical element is configured to divide the output laser beam into a plurality of diffractive laser beams. A confocal system is configured to focus the plurality of diffractive laser beams on a focal point, so that the plurality of diffractive laser beams produces an interference light beam with interference phenomena. The interference light beam ablates a surface of an element to fabricate a periodic micro-pattern on the surface of the element. The confocal system includes a first lens, a second lens and a light shielding mask. The plurality of diffractive laser beams passes through the first lens, the light shielding mask and the second lens in sequence.
摘要:
Multibeam diffraction grating-based color backlighting includes a plate light guide, a multibeam diffraction grating at a surface of the plate light guide, and light sources laterally displaced from one another in a direction corresponding to a propagation axis of the plate light guide. The light sources produce light of different colors. The plate light guide is to guide light from the light sources. The multibeam diffraction grating is to couple out a portion of the guided light using diffractive coupling as a plurality of light beams of different colors in a plurality of different principal angular directions.
摘要:
An optical module includes a transparent substrate and a refractive optical element mounted on the substrate. A conductive heating trace is deposited on the substrate around the refractive optical element. A temperature sensor senses a temperature of the substrate. Control circuitry is coupled to the temperature sensor so as to measure a difference between the temperature of the substrate and a target operating temperature of the module, and to drive a current through the conductive heating trace, responsively to the difference, so as to heat the substrate to the target operating temperature.
摘要:
Exemplary apparatus, systems, methods of making, and methods of using a configuration in an optical arrangement for forward viewing spectrally encoded endoscopy (SEE) probe can be provided. For example, the probe can comprise a light focusing component, a light guiding component, a light reflecting component, and a grating component.
摘要:
A projection system configured to emit patterned light along a projection optical axis includes: a diffractive optical element configured to perform a collimation function on the light emitted by the light emitter and to perform a pattern generation function to replicate the collimated light in a pattern, the pattern having substantially no collimated zero-order; and a light emitter configured to emit light toward the diffractive optical element, wherein the collimation function is configured to collimate the light emitted from the light emitter, and wherein the pattern generation function is configured to replicate the collimated light to produce the patterned light.
摘要:
Provided are an illumination device and a display apparatus capable of reducing generation of an interference pattern, while achieving downsizing and enhancing light use efficiency. An illumination device includes: a light source section that includes a laser light source; an optical device disposed on a light path through which laser light from the laser light source travels; an optical member that outputs illumination light; and a driving section that displaces a relative position between the optical device and the optical member to vary at least one of an incidence position and an incidence angle, in an incidence surface of the optical member, of the laser light.
摘要:
In one embodiment, a distance sensor includes a projection light source, a first light guiding means positioned to guide light emitted by the projection light source, a diffractive optical element positioned to split the light guided by the first light guiding means into a plurality of projection beams traveling in different directions, and an image capturing device positioned to capture an image of a field of view, including a projection pattern created by an incidence of the plurality of projection beams on an object in the field of view.
摘要:
A lamp providing different light patterns to different view angles, including: a plurality of light sources; and a hybrid optical diffraction element, including at least two layers of optical diffraction elements to provide a hybrid diffraction effect on incident light beams emitted from the plurality of light sources, so as to form an amplified light pattern and enable a viewer to see different forms of the amplified light pattern at different view angles.
摘要:
A projector includes a light source device, a diffraction element that converts light from the light source device into 0-th order light and diffracted light, a light modulation device that modulates the diffracted light so as to form image light, and a projection optical system that emits projected light having a chief ray which is tilted with respect to an optical axis of the image light incident from the light modulation device. Defining a reference plane as a plane which is perpendicular to a plane including the optical axis and a chief ray of the projected light and includes the optical axis, a plane including an optical axis of the 0-th order light and a chief ray of the diffracted light intersects the reference plane.