A high spatial and temporal resolution synthetic aperture phase microscopy (HISTR-SAPM) system and methods are provided for sample imaging and metrology. The HISTR-SAPM system includes a sample-illumination path along which a first illumination beam propagates and a reference-beam path along which a second illumination beam propagates. A first digital micromirror device (DMD), a second DMD, and a first scanning objective lens are disposed in the sample-illumination path and at a first side adjacent to the sample. A second scanning objective lens passes the sample information to a beam splitter (BS), where the sample illumination beam and the reference-beam are combined to form an interferogram at a final image plane for imaging the sample. A Fourier spatial spectrum analysis and a synthetic aperture are then used to reconstruct a quantitative phase map of the sample with a high resolution and at a high-speed.

A high spatial and temporal resolution synthetic aperture phase microscopy (HISTR-SAPM) system and methods are provided for sample imaging and metrology. The HISTR-SAPM system includes a sample-illumination path along which a first illumination beam propagates and a reference-beam path along which a second illumination beam propagates. A first digital micromirror device (DMD), a second DMD, and a first scanning objective lens are disposed in the sample-illumination path and at a first side adjacent to the sample. A second scanning objective lens passes the sample information to a beam splitter (BS), where the sample illumination beam and the reference-beam are combined to form an interferogram at a final image plane for imaging the sample. A Fourier spatial spectrum analysis and a synthetic aperture are then used to reconstruct a quantitative phase map of the sample with a high resolution and at a high-speed.

The present invention provides an optical device including a spectral filter and an optical detection unit for detecting light passing through the spectral filter. A band-limited filter is provided on the path of light.

Illuminations systems that separate different colors into laterally displaced beams may be used to direct different color image content into an eyepiece for displaying images in the eye. Such an eyepiece may be used, for example, for an augmented reality head mounted display. Illumination systems may be provided that utilize one or more waveguides to direct light from a light source towards a spatial light modulator. Light from the spatial light modulator may be directed towards an eyepiece. Some aspects of the invention provide for light of different colors to be outcoupled at different angles from the one or more waveguides and directed along different beam paths.

An optical beam controller includes: an optical multiple-beam generator generating a plurality of wavelength-swept optical beams; and an optical frequency difference setter setting an optical frequency difference in any combination of the plurality of optical beams in such a way as to be larger than a band of a photodetector that receives an optical beam.

The invention provides a light generating device (1000) comprising (i) a plurality of n light sources (100), and (ii) an optical component (1200) comprising an array (200) of prismatic elements (300), wherein: (a) the plurality of n light sources (100) comprise a first subset of one or more first light sources (110) configured to generate collimated first light source light (111) and a second subset of one or more second light sources (120) configured to generate collimated second light source light (121), wherein n>2; (b) the array (200) of prismatic elements (300) is configured in a light receiving relationship with the n light sources (100), wherein the array of prismatic elements (300) comprises k 1 parallel arranged first prismatic faces (201) and k2 parallel arranged second prismatic faces (202), wherein k1>2 and wherein k2>2, wherein the first prismatic faces (201) and the second prismatic faces (202) are not mutually parallel; (c) the first light sources (110) are configured to irradiate the first prismatic faces (201) and the second light sources (120) are configured to irradiate the second prismatic faces (202); and (d) the prismatic elements (300) are configured to reflect or refract the collimated first light source light (111) and the collimated second light source light (121) as coincident beams of first light source light (111) and second light source light (121).

Provided are systems and methods for using laser interferometry to measure moving objects. Systems provided include laser interferometry systems comprising: a laser emitter configured to emit a laser beam; a beam splitter configured to split the emitted laser beam into a first split beam directed towards a deflector and a second split beam, wherein the first split beam comprises a first beam diameter and a second beam diameter, the first beam diameter being greater than the second beam diameter, and the second split beam comprises a third beam diameter and a fourth beam diameter, the third split beam diameter being greater than the fourth beam diameter; and a deflector configured to deflect the first split beam to intersect with the first split beam, wherein the first beam diameter and the third beam diameter are parallel.

A display inspection system for inspecting a light beam emitted from a panel with pixels positioned at several focal planes is provided. The display inspection system includes a focus tunable lens adjustable in a focal distance for focusing at the panel, a first sensing unit for receiving the light beam, a reduced aberration optical system arranged between the focus tunable lens and the first sensing unit for focusing at the first sensing unit, and one or more optical elements placed within a back focal length of the reduced aberration optical system. The reduced aberration optical system comprises a first serial cascade lens group of a first aplanatic lens and a first doublet lens for correcting an optical aberration. The first aplanatic lens and the first doublet lens are co-configured that the back focal length is extended in a manner that the light beam is incident to the first sensing unit.

A projection device, including an illumination light source, an electrochromic module, at least one light valve, and a projection lens, is provided. The illumination light source provides an illumination beam. The electrochromic module is disposed on a transmission path of the illumination beam. The electrochromic module includes at least one electrochromic element, and sequentially maintains or changes a wavelength of the illumination beam penetrating the at least one electrochromic element. The at least one light valve is disposed on the transmission path of the illumination beam transmitted by the electrochromic module to convert the illumination beam into an image beam. The projection lens is disposed on a transmission path of the image beam to project the image beam out of the projection device. The projection device and the use method thereof provided by the disclosure may change the color light output or the color space of a display image.

A projection display system includes a light source assembly, a wavelength adjusting assembly, and a modulation assembly. The light source assembly is configured to emit projected light. The wavelength adjusting assembly is disposed on an optical path of the projected light for adjusting spectrum of the projected light, and a ratio of luminous efficacy of adjusted projected light to luminous efficacy of monochromatic light corresponding to a dominant wavelength of the projected light is greater than a preset ratio, and color gamut of the adjusted projected light satisfies a preset color gamut coverage. The modulation assembly is disposed on a light exiting path of the wavelength adjusting assembly and configured to modulate light emitted by the wavelength adjusting assembly and output corresponding image light to form projection image.