A phase-contrast microscope includes a light source section configured to emit light; a light guide including a plurality of optical fibers, the light guide transmitting the light emitted from the light source section through the plurality of optical fibers; and an object lens including a lens and an annular phase film, the annular phase film being on the side to which light passes through the lens, the object lens being configured to enlarge an image on a sample irradiated with the light transmitted by the light guide. The plurality of optical fibers include a plurality of emission faces arranged to form a ring, and the light guide is disposed in such a manner that the plurality of emission faces are in a conjugate position to the annular phase film.

An imaging device may code light, passing through an imaging optical lens arranged in a multi-lens array (MLA), and may transmit the light to a sensing element, and the sensing element may restore an image based on sensed information.

Systems for generating solar power are provided. One such system includes a solar radiation collector and one or more side-emitting fiber-optic cables, coupled to the solar radiation collector. The system further includes one or more photovoltaic cell enclosures, including an outer housing and one or more photovoltaic cells, wherein the one or more side-emitting fiber-optic cables is positioned within the outer housing and configured to emit, to the one or more photovoltaic cells, solar radiation collected from the solar radiation collector.

Systems and methods are provided for a UV-VIS spectrophotometer, such as a UV-VIS detector unit included in a high-performance liquid chromatography system. In one example, a system for the UV-VIS detector unit may include a first light source, a signal detector, a flow path positioned intermediate the first light source and the signal detector, a second light source, and a reference detector. The first light source, the signal detector, and the flow path may be aligned along a first axis, and the second light source and the reference detector may be aligned along a second axis, different than the first axis.

A Concentrating PhotoVoltaic (CPV) system employs an inflatable non-imaging CPC concentrator to concentrate sunlight to realize extremely low cost and a synergistically combined photonic crystal waveguide solar spectrum splitter and perovskite integrated circuitry solar cell package to realize ultra-high conversion efficiency of solar radiation. The corporation of band gap variable perovskite materials into the integrated circuit solar cell not only reduces the cost and raises the efficiency of the photovoltaic package as the receiver, but also addresses the unstable issue of the perovskite materials through sealing the perovskite materials into package to prevent moisture, reducing the heat generation to low the temperature, and filtering the UV light and channel to other elemental solar made of broader band gap photovoltaic materials.

A light source apparatus can avoid double-counting of particles in a flow cytometer for measuring and analyzing a plurality of particles flowing in a flow cell. A light source apparatus for a flow cytometer includes a semiconductor laser for emitting a laser beam, a collimating lens for collimating the laser beam emitted from the semiconductor laser in a spread light state, a first beam conversion unit composed of prisms and a second beam conversion unit composed of prisms for matching a flow cell length direction with a slow axis direction of the collimated laser beam in a flow cell after reducing the beam diameter in a fast axis direction and increasing the beam diameter in the slow axis direction, and a focusing lens for focusing the laser beam passed through these beam conversion units in the flow cell.

An optical detector includes a light emitting unit and a light receiving unit that receives a reflected light reflected by a measurement object. The light receiving unit has a detection element and a condenser lens system that collects the reflected light to the detection element. The condenser lens system has a plurality of lenses. The condenser lens system has a temperature change factor that increases the optical power at a high temperature than at a low temperature, and a chromatic aberration factor that decreases the optical power at a long wavelength than at a short wavelength. The optical power of each of the plurality of lenses is adjusted based on a correspondence between a change in temperature and a shift amount of the peak wavelength, so that the chromatic aberration factor balances with the temperature change factor within a predetermined wavelength range.

A projection display apparatus includes an image light emitter that includes a light modulation element that emits image light, a projection lens unit that projects the image light on a projection target, an optical path separation element, an imaging element that images external light incident via the projection lens unit and the optical path separation element, and a condensing optical system. The optical path separation element transmits a part of the image light to the projection lens unit, and reflects a part of the external light emitted from the projection lens unit to the condensing optical system. The condensing optical system condenses the part of the external light reflected by the optical path separation element on the imaging element. A capturing angle of the external light in the condensing optical system is equal to or less than a condensing angle of a lens F-number of the projection lens unit.

Provided is an imaging device including a sensing array including a plurality of sensing elements, an imaging lens array including a plurality of imaging optical lenses, each of the plurality of imaging optical lenses having a non-circular cross-section perpendicular to an optical axis, and configured to transmit light received from an outside of the imaging device, and a condensing lens array including a plurality of condensing lenses disposed between the imaging lens array and the sensing array, and configured to transmit the light passing through the imaging lens array to the sensing elements, wherein a number of the plurality of imaging optical lenses is less than a number of the plurality of condensing lenses.

A LiDAR-integrated lamp device for a vehicle, wherein a headlamp and a LiDAR system are mounted at the same position, such that the layout may be reduced and the number of parts may be decreased by sharing and combining parts, reducing the manufacturing cost.