6 results about "Large fov" patented technology

A deep learning-enabled system for the display or projection of high-resolution images is disclosed that is based on a jointly-trained pair of an electronic encoder network and an all-optical decoder network to synthesize / project super-resolved images using low-resolution wavefront modulators. The electronic encoder network rapidly pre-processes the high-resolution images of interest so that their spatial information is encoded into low-resolution (LR) modulation patterns, projected via a low SBP wavefront modulator. The all-optical decoder network processes this LR encoded information using thin transmissive layers that are structured using deep learning to all-optically synthesize and project super-resolved images at its output FOV. Results indicate that this diffractive image display system can achieve a super-resolution factor of ˜4, demonstrating a ˜16-fold increase in SBP. The system can be scaled to operate at visible wavelengths and be used for large FOV and high-resolution displays that are compact, low-power, and computationally efficient.

A multi-lens projection lens, a projector and an optical device are characterized in that the multi-lens projection lens comprises a first lens, a second lens, a third lens and a fourth lens which are sequentially arranged along an optical path; wherein the first lens is a biconvex positive lens; the second lens is a meniscus positive lens, the incident surface is a convex surface, and the emergent surface is a concave surface; the third lens is a biconcave negative lens; the fourth lens is a meniscus negative lens, the light-in surface is a concave surface, and the light-out surface is a convex surface. According to the utility model, the problems of speckle FOV, insufficient uniformity and distortion existing in the existing speckle projection scheme can be overcome, large FOV, high uniformity and low distortion speckle projection can be realized, and speckle projection with flexible pattern distribution can also be realized.

A curved lightguide that employs a freeform incoupler, a freeform world-facing surface, and a freeform outcoupler disposed between a spherical world-facing lens surface and a spherical eye-facing lens surface to achieve a relatively large FOV for display light and transmission of ambient light from the environment in a thin form factor.

A novel speckle projector and optical equipment are characterized in that the novel speckle projector comprises an array laser used for projecting array laser; a projection lens; the distance between the light-emitting surface of the array laser and the focal plane of the projection lens is smaller than 1 / 10 of the focal length of the projection lens. According to the utility model, the problems of speckle FOV, insufficient uniformity and distortion existing in the existing speckle projection scheme can be overcome, large FOV, high uniformity and low distortion speckle projection can be realized, and speckle projection with flexible pattern distribution can also be realized.

The application discloses a large-angle projection method and system of multiple MEMS galvanometer scanners, and a medium, wherein a high-speed photoelectric converter is placed between adjacent projection units; a galvanometer is driven to vibrate, and a laser is driven to emit point laser; the point laser emitted by the laser sequentially passes through a collimating lens and a linear prism, and is then incident to a surface of the galvanometer, and is reflected to a scanning object surface through the galvanometer, so that a periodic grating pattern is formed; the time delay of the driving signals of multiple lasers is adjusted, and the high-speed photoelectric converter is combined, so that the projection boundaries of two adjacent galvanometers are aligned; the time delay of the driving signals of the multiple lasers is adjusted, so that the phases projected by the multiple projection units are continuously coded; a camera is triggered to acquire the grating pattern; and three-dimensional information of the scanning object is generated based on the grating pattern; the application has the advantage of a larger FOV than a single MEMS galvanometer projection scheme, a projection scheme with a large depth of field and a large projection angle is obtained, and a low-cost scheme can be provided for a large-view-field three-dimensional scanning.

A detection apparatus, a LiDAR and a terminal, which are applied to the technical field of LiDARs. The detection apparatus comprises a transmitting module, a first receiving module, a second receiving module and a scanning module, wherein the transmitting module is used for transmitting a light beam to an object space, the first receiving module and the second receiving module are each used for receiving the light beam from the object space, and the field of view (FOV) of the first receiving module is different from that of the second receiving module. Moreover, a transmitting light path of the transmitting module, a receiving light path of the first receiving module and a receiving light path of the second receiving module all pass through the same reflecting surface of the scanning module. Therefore, the matching degree of light spots received by a plurality of receiving modules can be improved, and energy distribution differences caused by different reflecting surfaces can be significantly reduced, such that a large FOV and a high resolution are ensured, and the performance of the detection apparatus can also be improved and remain stable.