A method and systems for simultaneous recording of superimposed holographic gratings for augmented reality devices are provided. The method includes: generating a beam by a single light source, directing the beam to a decoherence unit at a predetermined angle, forming at least two recording beams by the decoherence unit by splitting the beam, forming at least two recording channels in the decoherence unit to transmit the at least two recording beams and output them from the decoherence unit, output angles of each of the at least two recording beams being different, the at least two recording beams being non-interfering when leaving the decoherence unit, which is provided in accordance with at least one of: output times, spatial positions, polarization states, or spectral compositions of each of the at least two recording beams, illuminating a recording material layer and one master diffractive optical element/master holographic optical element (master DOE/HOE) comprising at least one preliminary formed diffraction/holographic grating by the at least two non-interfering recording beams, simultaneously forming at least two superimposed holographic gratings from the master DOE/HOE on or in the recording material layer, the formed superimposed holographic gratings having a same surface period, but a different spatial period.

Provided a display apparatus including an image forming apparatus configured to form an image, a projection optical system configured to project the image formed by the image forming apparatus, and a combining optical system configured to provide the image projected from the projection optical system combined with light emitted from an external landscape, wherein the combining optical system is configured to divide the image projected from the projection optical system into same images and focus the same images on different positions.

Provided herein is a multifunctional aesthetic system including a housing, an electromagnetic array situated in the housing and having a plurality of electromagnetic radiation (EMR) sources, each EMR source configured to generate an EMR beam having a wavelength different than that of an EMR beam generated by another of the EMR sources, a controller in electronic communication with the array to operate two or more of the EMR sources to direct the EMR beam to a treatment area, and a sensor in electronic communication with the controller for providing feedback to the controller based on defined parameters to allow the controller to adjust at least one operating condition of the multifunctional system in response to the feedback.

An integrated device includes a laser ranging module, a dual-branched fiber bundle, a beam splitter, and an image receiving module. The laser ranging module includes a light source, an optical receiver and a computing unit. The fiber bundle is disposed between the laser ranging module and the beam splitter. A target reflects a measuring beam emitted by the light source to form a reflected beam. The beam splitter splits the reflected beam into a first reflected beam and a second reflected beam. The first reflected beam is transmitted to the optical receiver through the fiber bundle to generate a measurement signal. The computing unit receives the measurement signal to calculate a distance between the target and the fiber bundle. The image receiving module is disposed on the optical path of the second reflected beam to receive the second reflected beam and displays the image of the target.

Embodiments discussed herein refer to generating multiple laser beams from a single beam source. Single source multi-beam splitters can produce multiple beams from a single source, precisely control the exit angle of each beam, and ensure that each beam has substantially the same intensity.

A microscope system includes an objective lens, configured to gather a first light of a target sample to enter a first optical path, wherein the first light converges, at a beamsplitter, with a second light generated by an image projection module after entering the first optical path through a lens assembly; a beamsplitter assembly, configured to respectively separate and cast light in different optical paths; a camera assembly, configured to photograph the target sample in a microscope field of view, to photograph a clearly focused image through a first optical path by using the camera assembly; an auxiliary focusing device, configured to determine a focal length matching the camera assembly; and a focusing device, configured to adjust a focal length of image light entering the camera assembly according to a defocus amount of a target sample image determined by the auxiliary focusing device.

A waveguide illuminator includes an input waveguide, a waveguide splitter coupled to the input waveguide, and a waveguide array coupled to the waveguide splitter. The waveguide array includes an array of out-couplers out-coupling portions of the split light beam to form an array of out-coupled beam portions for illuminating a display panel. Locations of the array of out-couplers are coordinated with locations of individual pixels of the display panel, causing each light beam portion to propagate through a corresponding pixel of the display panel, thereby improving efficiency of light utilization by the display panel.

A dot projector may include a vertical-cavity surface-emitting laser (VCSEL). The dot projector may include one or more collimating elements to collimate light emitted by the VCSEL. An effective focal length of the one or more collimating elements may be larger than an optics length of the dot projector. The dot projector may include an optical element including a periodic optical phase function to replicate the light after collimation by the one or more collimating elements and an aberration-correcting phase function to correct spot aberrations in a dot pattern resulting from the tiling or splitting of the light.

An infrared window includes a substrate composed of “KRS-5” as a raw material which is mixed crystal of thallium iodide and thallium bromide and an infrared transmissive coating that covers a surface of the substrate. A raw material for the infrared transmissive coating is parylene. A thickness of the infrared transmissive coating is set to a value at which an infrared absorptance is lower than 3%. The thickness of the infrared transmissive coating is set to a value at which the infrared absorptance is lower than 3%. The thickness of the infrared transmissive coating is set to a value within a range not smaller than 20 nanometers and smaller than 50 nanometers.

The invention is relates to systems and methods for high dynamic range (HDR) image capture and video processing in mobile devices. Aspects of the invention include a mobile device, such as a smartphone or digital mobile camera, including at least two image sensors fixed in a co-planar arrangement to a substrate and an optical splitting system configured to reflect at least about 90% of incident light received through an aperture of the mobile device onto the co-planar image sensors, to thereby capture a HDR image. In some embodiments, greater than about 95% of the incident light received through the aperture of the device is reflected onto the image sensors.