An optoelectronic device includes a semiconductor substrate having first and second faces. A first array of emitters are formed on the first face of the semiconductor substrate and are configured to emit respective beams of radiation through the substrate. Electrical connections are coupled to actuate selectively first and second sets of the emitters in the first array. A second array of microlenses are formed on the second face of the semiconductor substrate in respective alignment with the emitters in at least one of the first and second sets and are configured to focus the beams emitted from the emitters in the at least one of the first and second sets so that the beams are transmitted from the second face with different, respective first and second focal properties.

An external resonance-type laser module includes: a quantum cascade laser; a MEMS diffraction grating including a movable portion capable of swinging around an axis and a diffraction grating portion formed on the movable portion; and a lens. The diffraction grating portion includes a plurality of lattice grooves arranged in a first direction and each of the plurality of lattice grooves extends in a second direction perpendicular to the first direction. The MEMS diffraction grating is disposed such that a normal line of the diffraction grating portion is inclined with respect to an end surface and the first direction is along a lamination direction of a laminated structure when viewed in a direction perpendicular to the end surface. A length of the diffraction grating portion in the first direction exceeds a length of the diffraction grating portion in the second direction.

A light emitting module includes: a first light emitting device including: a first package, a plurality of first semiconductor laser elements mounted in the first package, and a first lens member having lens portions, a number of the lens portion is the same as a number of the first semiconductor laser elements; and a second light emitting device including: a second package, a plurality of second semiconductor laser elements mounted in the second package, wherein a quantity of the second semiconductor laser elements is fewer than a quantity of the first semiconductor laser elements, and a second lens member which is structured the same as the first lens member; and one or more mounting substrates in which the first light emitting device and the second light emitting device are mounted.

A semiconductor laser device includes: a plurality of semiconductor laser elements which emit laser beams with different wavelengths; a plurality of lens portions which collimate the laser beams; a wavelength dispersion element on which the laser beams are incident at different angles, and which changes the traveling directions of the incident laser beams according to the wavelengths to generate an emitted beam that is a combined beam of the laser beams; a plurality of first reflective surfaces which cause the laser beams to be incident on the wavelength dispersion element at the angles corresponding to the laser beams; and a plurality of second reflective surfaces which guide the laser beams to the plurality of first reflective surfaces.

A semiconductor laser device includes: a plurality of semiconductor laser elements which emit laser beams with different wavelengths; a plurality of lens portions which collimate the laser beams; a wavelength dispersion element on which the laser beams are incident at different angles, and which changes the traveling directions of the incident laser beams according to the wavelengths to generate an emitted beam that is a combined beam of the laser beams; a plurality of first reflective surfaces which cause the laser beams to be incident on the wavelength dispersion element at the angles corresponding to the laser beams; and a plurality of second reflective surfaces which guide the laser beams to the plurality of first reflective surfaces.

A light source unit includes: a first light emission point from which a first beam is emitted; a second light emission point from which a second beam is emitted and which is disposed apart from the first light emission point in a second direction perpendicular to a first direction; a deflection element that deflects the first and/or second beam; and a first condensing optical element that focuses, on a light collection surface, the first and second beams. The first beam at the first light emission point overlaps the second beam at the second light emission point in a third direction, and on the light collection surface, the first and second beams overlap each other in the second direction and are separate from each other in the third direction.

A light source unit includes: a first light emission point from which a first beam is emitted; a second light emission point from which a second beam is emitted and which is disposed apart from the first light emission point in a second direction perpendicular to a first direction; a deflection element that deflects the first and/or second beam; and a first condensing optical element that focuses, on a light collection surface, the first and second beams. The first beam at the first light emission point overlaps the second beam at the second light emission point in a third direction, and on the light collection surface, the first and second beams overlap each other in the second direction and are separate from each other in the third direction.

An illumination source, comprising: (a) at least one coherent light emitting device (CLED) configured for emitting coherent light having an optical path; (b) at least one optical element in said optical path for converting at least a portion of said coherent light to incoherent light, said optical element being configured to emit said incoherent light in a direction; and (c) a light control mechanism (LCM) for altering said direction of said incoherent light.

A light emitting device includes: a plurality of laser elements including a first laser element and a second laser element; a case enclosing the laser elements and including a light-transmissive region; and a plurality of main lenses including a first main lens configured to collimate or converge light emitted from the first laser element and a second main lens configured to collimate or converge light emitted from the second laser element. At least a first portion of the light-transmissive region is disposed on a first imaginary line passing through a light emitting end surface of the first laser element and the first main lens, and at least a second portion of the light-transmissive region is disposed on a second imaginary line passing through a light emitting end surface of the second laser element and the second main lens.

A light emitting device includes a base, a first light emitting element and a first light reflecting member disposed on the base and a lens member. The first light reflecting member is positioned with respect to the first light emitting element so that emitted light from the first light emitting element is divided into a portion of the emitted light from the first light emitting element irradiating onto the light reflecting face and a portion of the emitted light from the first light emitting element traveling outside of the light reflecting face by having an edge of the light reflecting face serve as a boundary. The lens member includes a reflected light passing region having a first lens shape configured to control the travelling direction of reflected light, and a non-reflected light passing region having a second lens shape configured to control a travelling direction of non-reflected light.