摘要:
According to one aspect, a sparse optical system is provided. The sparse optical system includes optical segments, an optical source module to generate beams of light, a collimating module to direct the beams of light towards two adjacent optical segments, a detector to receive a reflection of the beams of light from the optical segments, and a processor. The processor instructs the optical source module to generate a first beam of light, determines a first measurement of an alignment of the two adjacent segments based on the reflection of the first beam, adjusts a position of an optical segment based on the first measurement, instructs the optical source module to generate a second beam of light, and determines a second measurement of the alignment of the two segments based on the reflection of the second beam.
摘要:
Configurations are disclosed for presenting virtual reality and augmented reality experiences to users. The system may comprise an image-generating source to provide one or more frames of image data in a time-sequential manner, a light modulator configured to transmit light associated with the one or more frames of image data, a substrate to direct image information to a user's eye, wherein the substrate houses a plurality of reflectors, a first reflector of the plurality of reflectors to reflect transmitted light associated with a first frame of image data at a first angle to the user's eye, and a second reflector to reflect transmitted light associated with a second frame of the image data at a second angle to the user's eye.
摘要:
A scanning laser ophthalmoscope (10) for scanning the retina of an eye (22) is provided comprising a light source (12) emitting a beam of light (13), scan relay elements (14, 16, 18, 20), wherein the light source and the scan relay elements provide a two-dimensional scan of the light beam which is transferred from an apparent point source at a pupillary point of the eye to the retina of the eye, and a static aberration correction element (30) which has a shape defined to provide correction of aberrations of at least some of the scan relay elements and a location within the ophthalmoscope chosen to provide correction of aberrations of at least some of the scan relay elements, which location maintains transfer of the beam of light from the apparent point source at the pupillary point of the eye to the retina of the eye. The invention further provides an aberration correction element (30) and a method of determining a shape of the aberration correction element.
摘要:
The invention relates to a spot generator (10) having: —an entrysurface (12) for receiving an incident light beam (20) and an exit surface (14) for (22, 24) transmitting the light beam, the entry surface defining an entryside (16) and the exit surface defining an exit side (18). According to the invention, the spot generator is designed to modulate the incident light beam to generate on the exit side a first plurality (22) and a second plurality (24) of separate light spots, each light spot belonging to the first plurality having a first angular spectrum and each light spot belonging to the second plurality having a second angular spectrum different than the first angular spectrum. Advantageously, the spot generator comprises a periodic binary phase structure. The invention further relates to a multi-spot scanning microscope and to a method of imaging a microscopic sample.
摘要:
Configurations are disclosed for presenting virtual reality and augmented reality experiences to users. The system may comprise an image-generating source to provide one or more frames of image data in a time-sequential manner, a light modulator configured to transmit light associated with the one or more frames of image data, a substrate to direct image information to a user's eye, wherein the substrate houses a plurality of reflectors, a first reflector of the plurality of reflectors to reflect transmitted light associated with a first frame of image data at a first angle to the user's eye, and a second reflector to reflect transmitted light associated with a second frame of the image data at a second angle to the user's eye.
摘要:
Described are a method and apparatus for high-speed phase shifting of an optical beam. A transparent plate having regions of different optical thickness is illuminated by an optical beam along a path of incidence that extends through the regions. The transparent plate can be moved or the optical beam can be steered to generate the path of incidence. The optical beam exiting the transparent plate has an instantaneous phase value according to the region in which the optical beam is incident. Advantageously, the phase values are repeatable and stable regardless of the location of incidence of the optical beam within the respective regions, and phase changes at high modulation rates are possible. The method and apparatus can be used to modulate a phase difference of a pair of coherent optical beams such as in an interferometric fringe projection system.
摘要:
Light sources of a backlight are configured to customize the shape of light emitted from the clusters. The clusters are activated as a unit and modulated as to brightness, but of the customized shape. All clusters can have a similar customized PSF, or the customization of each cluster may be varied in real time. Real time changes of a clusters PSF may be based, for example, an image or a region of the image to be displayed using the clusters.
摘要:
The invention relates to a spot-generator (10) having: an entrance surface (12) for receiving an incident light beam (20) and an exit surface (14) for transmitting the light beam, the entrance surface defining an entrance side (16) and the exit surface defining an exit side (18), wherein the spot generator is designed to modulate the incident light beam to generate on the exit side a plurality of separate light spots. According to the invention, the plurality of light spots comprises a first light spot (22) generated in a first focal plane (24) and a second light spot (26) generated in a second focal plane (28), the first focal plane and the second focal plane being essentially perpendicular to the mean propagation direction of the exit light beam, and wherein the first light spot (22) differs from every other light spot generated on the exit side by the spot generator in the projection of its position on a plane essentially perpendicular to the mean propagation direction of the exit light beam. Advantageously, the light spots of the plurality of separate light spots have identical spectra. The invention further relates to a multi-spot scanning microscope and to a method of generating an image of a microscopic sample. Advantageously, the method comprises the step of generating a three-dimensional image of the sample.
摘要:
The invention relates to a device for generating a periodical array of light spots from an input light beam, said device comprising - a periodical array of apertures (202) forming a plurality of interlaced sub-arrays of apertures, - phase shifter elements (PS;) placed in front of said apertures for imposing a phase shift to said input light beam so that each light spot is constructed as the superposition of a plurality of light spots generated by said plurality of interlaced sub-arrays of apertures. Use : Light spot generation.