A light-guide member includes a light-incident surface formed at an end portion of the light-guide member in a first direction, a light-emitting surface that is elongated in the first direction and that includes first and second light-emitting regions, which cause light to be emitted in different directions in a first cross section that is perpendicular to the first direction, a common deflecting portion that deflects light from the light-incident surface and causes the light to be emitted from the first and second light-emitting regions to the outside, and first and second protruding portions each of which is located on one of two sides of the deflecting portion in the first cross section, the first and second protruding portions protruding in a direction away from the light-emitting surface with respect to the deflecting portion.

The system captures and concentrates sunlight for transmission to interior spaces or to a PV system. A solar collector uses arrayed refractive lenses, opposing concave focusing mirrors, and a movable coupling sheet forming part of a lightguide. The lenses and mirrors have an asymmetric shape, such as having aspect ratios of 3:4 or 1:2, so as to have an asymmetric aperture to better receive light at the different ranges of angles of the sun's rays over the course of a year. The long axis of the apertures is generally oriented in an East-West. The movable sheet contains small angled mirrors, and the sheet is translated to position the angled mirrors at the focal points of the sunlight for maximum deflection of the sunlight to an output of the collection system. A position sensor provides feedback regarding the position of the angled mirrors relative to the focal points.

An optical system for light distribution. The optical system includes at least a reflective surface, at least two refracting surfaces, at least one inner lens and an outer lens. The optical system provides high efficiency collection and distribution of light.

Described are optical systems for a digital micromirror device (DMD) illuminator. The optical systems include a LED array, a tapered non-imaging collection optic, a reflective stop and a telecentric lens system. The telecentric lens system is disposed along an optical axis defined between the tapered non-imaging collection optic and the reflective stop. The telecentric lens system is configured as a first half of a symmetric one to one imager for an object plane on the optical axis and as a second half of the symmetric one to one imager for optical energy reflected from the reflective aperture stop. The optical systems reclaim optical energy emitted by the LED array that does not initially pass through the reflective stop and provide an improved intensity distribution at the DMD. Reductions in stray light and the thermal loads on the illuminator and DMD are achieved relative to conventional illumination systems for DMDs.

The disclosure relates to a cancer treatment system including a nozzle which generates the mist of a solution which consists of basic hydrogen peroxide and an imaging optics that relays an aerial image near the exit of the nozzle. The imaging optics can relay a spatial image at the outlet of the nozzle. Consequently, the 1.27-micrometer wavelength radiation is focused at where the affected part of a cancer patient is positioned.

An optical element of an embodiment includes an optical element made of a material transparent to light, the optical element including: a back surface facing the front surface; and a connection surface. The front surface includes a recessed surface in a region facing the connection surface. The recessed surface has a point closest to the connection surface as a closest point, and has a first singular point other than the closest point.

A curved light guide structure configured to guide a spectral region, includes: end faces disposed at two ends of the ring segment structure; a first main side extending between the end faces and a second main side opposite the first main side and extending between the end faces; at least a first pass region on the first main side, the first pass region being configured to receive and let pass an optical signal within the spectral region, the curved light guide structure being configured to guide the optical signal along an axial direction between the end faces; and at least a second pass region on the second main side that is configured to let pass and to emit at least part of the optical signal from the curved light guide structure.

A light-guide member includes a light-incident surface formed at an end portion of the light-guide member in a first direction, a light-emitting surface that is elongated in the first direction and that includes first and second light-emitting regions, which cause light to be emitted in different directions in a first cross section that is perpendicular to the first direction, a common deflecting portion that deflects light from the light-incident surface and causes the light to be emitted from the first and second light-emitting regions to the outside, and first and second protruding portions each of which is located on one of two sides of the deflecting portion in the first cross section, the first and second protruding portions protruding in a direction away from the light-emitting surface with respect to the deflecting portion.

Described are optical systems for a digital micromirror device (DMD) illuminator. The optical systems include a LED array, a tapered non-imaging collection optic, a reflective stop and a telecentric lens system. The telecentric lens system is disposed along an optical axis defined between the tapered non-imaging collection optic and the reflective stop. The telecentric lens system is configured as a first half of a symmetric one to one imager for an object plane on the optical axis and as a second half of the symmetric one to one imager for optical energy reflected from the reflective aperture stop. The optical systems reclaim optical energy emitted by the LED array that does not initially pass through the reflective stop and provide an improved intensity distribution at the DMD. Reductions in stray light and the thermal loads on the illuminator and DMD are achieved relative to conventional illumination systems for DMDs.

A small form factor optical head defines a single light pathway. The optical head includes a housing, a lens positioned on or in the housing, and a light source positioned in the housing to emit an excitation light. A mirror is positioned in the housing to reflect the excitation light to the lens and to receive emission light back through the lens, and a beamsplitter positioned in the housing directs the excitation light to the lens and directs the emission light to a detector that receives emission light after passing back through the lens and the beam splitter. The lens, the mirror, and the beam splitter define a single light pathway for the excitation light and emission light. A method for optical analysis is also disclosed.