According to at least one aspect, the present disclosure provides a head-up display device comprising: a housing having a receiving space therein; a display unit disposed over the housing; a light source unit disposed so that a main optical axis is not directed at the display unit; a first reflector reflecting at least some of light emitted from the light source unit towards the display unit; and a diffuser disposed on an optical path of the light source unit reflected from the first reflector to uniformly make light.

An optical apparatus includes a deflection unit configured to deflect illumination light from a light source and to deflect reflected light from the object, and a light guide unit configured to guide the illumination light to the deflection unit and to guide the reflected light from the deflection unit to a light receiving unit. The light guide unit includes first and second passage areas, and a reflective area. The illumination light is branched into first and second illumination lights by the light guide unit. The first illumination light is emitted from the first passage area and the second illumination light is emitted from the second passage area so that an emission direction of the first illumination light and that of the second illumination light are not parallel to each other, and then the first illumination light and the second illumination light enter the deflection unit.

A color mixing lens assembly is provided. The color mixing lens assembly may include an optic arranged about a light source and a ring reflector. The ring reflector may be arranged within the optic. In this configuration, the ring reflector is configured to reflect the first portion towards a surface of the optic. The optic may be configured to reflect the first portion through an exit plane of the optic, and to reflect a second portion of the electromagnetic radiation through the exit plane. Alternatively, the ring reflector may be arranged around the optic. The optic may further include a kick surface configured to reflect the first portion of the electromagnetic radiation toward the ring reflector. The ring reflector may be configured to reflect the first portion through an exit plane of the optic. The optic may be configured to reflect a second portion of the electromagnetic radiation through the exit plane.

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.

According to one embodiment, an illumination device includes a light source module, and a reflector opposed to the light source module. The reflector includes a plurality of incidence openings on which light from the light source module is made incident, a plurality of emission openings opposed to the incidence openings, a plurality of reflective surfaces extending from the incidence openings to the emission openings, respectively, and reflective films formed on the reflective surfaces. The reflector includes a plurality of blocks, and the blocks are bonded to each other to form the reflector.

A device includes a light source to emit light and a light detector to receive the light emitted by the light source. The device may include a high voltage optical transformer and may be configured such that the light detector is laterally spaced away from the light source. In some architectures, the light source and the light detector may be arranged in a common plane. A photonic integrated circuit may be used to couple light emitted from the light source to the light detector.

A speckle-suppressing lighting system includes an optical waveguide, a first solid-state light source, a second solid-state light source, and a diffuser. The optical waveguide has a proximal end and a distal end. At least part of the diffuser is between the proximal end and the distal end. The first solid-state light source is optically coupled to the optical waveguide near the proximal end, and emits a first light beam that propagates toward the distal end and has a first center wavelength. The second solid-state light source is optically coupled to the optical waveguide near the proximal end, and emits a second light beam that propagates toward the distal end and has a second center wavelength differing from the first center wavelength. The diffuser diffuses the first light beam and the second light beam.

A sampling module for providing an illumination beam onto an object and collecting a measurement beam reflected thereby to at least one measurement device is provided. The sampling module includes at least one illumination module, a light collecting element, and at least one light receiving module. The illumination module provides the illumination beam. The light collecting element has a first opening and an internal space. The illumination module is disposed in the first opening. The illumination beam is transmitted to the object in the internal space. The light receiving module is connected to the light collecting element and includes a case and a lens set. A distance between the sampling module and the object is greater than 0 mm. The measurement beam is transmitted by the object through the lens set to be incident onto the measurement device.

A light generating system (1000) comprising a plurality of light sources (10) configured to provide light source light (11), an elongated luminescent body (100) having a first face (141) and a second face (142) defining a length (L) of the elongated luminescent body (100), the elongated luminescent body comprising one or more side faces (140), the elongated luminescent body (100) comprising a radiation input face (111) and the second face (142) comprising a first radiation exit window (112), wherein the radiation input face (111) is configured in a light receiving relationship with the plurality of light sources (10), wherein the elongated lumines-cent body (100) comprises luminescent material (120) configured to convert at least part of the light source light (11) into luminescent material light (8), and a beam shaping optical element (224).

An analysis and observation device includes: an electromagnetic wave emitter that emits a primary electromagnetic wave; a reflective object lens having a primary mirror provided with a primary reflection surface reflecting a secondary electromagnetic wave and a secondary mirror provided with a secondary reflection surface receiving and further reflecting the secondary electromagnetic wave; first and second detectors that receive the secondary electromagnetic wave and generate an intensity distribution spectrum; and a controller that performs component analysis of a sample based on the intensity distribution spectrum. A transmissive region through which the primary electromagnetic wave is transmitted is provided at a center of the secondary mirror. The transmissive region transmits the primary electromagnetic wave, which has been emitted from the electromagnetic wave emitter and passed through an opening of the primary mirror, thereby emitting the primary electromagnetic wave along an analysis optical axis of the reflective object lens.