A rectangular wide-beam flashlight that utilizes a plurality of LEDs positioned in specifically formed optical elements to generate a uniform, rectangular beam pattern configured to substantially illuminate one or more walls in a room. The flashlight uses a radial array of LEDs that are disposed at or within optical elements or cavities configured to combine the output of the LEDs to form a substantially uniform and seamless, high-aspect ratio or wide rectangular beam for adequately illuminating one or more walls in a room.

An illumination unit includes: at least one optoelectronic emitter unit which emits electromagnetic radiation via a light-emitting surface, and a photonic structure for beam shaping of the electromagnetic radiation before it exits via the light emitting surface, wherein the photonic structure shapes the electromagnetic radiation such that the electromagnetic radiation has a certain far field.

In various embodiments, pointing errors in a non-wavelength-beam-combining dimension of a laser system are at least partially alleviated via staircased collimation lenses.

The present disclosure relates to optical systems and related methods of their use. An example optical system includes a transmitter. The transmitter includes a light emitter device configured to emit emission light. The light emitter device defines a reference plane. The transmitter also includes a fast axis collimation (FAC) lens optically coupled to the light emitter device. A lens axis of the FAC lens is arranged at a non-zero angle with respect to the reference plane. The transmitter also includes a transmit lens optically coupled to the FAC lens. The optical system also includes a receiver. The receiver includes a receive lens and a light detector optically coupled to the receive lens.

The present application relates to a linear light source using ultraviolet light emitting diodes (LEDs), and a photopolymer 3D printer comprising the linear light source. The linear light source may include a substrate distanced from a polymer case of the photopolymer 3D printer and an ultraviolet LED array in which a plurality of ultraviolet LEDs, which project ultraviolet rays toward the polymer case, are arranged on the substrate in multiple rows in the X-axis direction. The arrangement of the multiple columns in the Y-axis direction is at an oblique angle to the multiple rows.

The invention relates to a device and a method for projecting a plurality of radiation points onto an object surface, comprising at least one radiation source for emitting electromagnetic radiation, comprising at least one beam path, via which the radiation emitted at least temporarily by the emitters is deflected in the direction of the object surface, and comprising a controller which, in order to change at least one property of the emitted radiation, controls the radiation source according to a light object to be generated on the object surface. The controller is designed in such a way that at least two of the plurality of emitters of the radiation source are each individually controlled in order to change at least one property of the emitted radiation according to the light object to be generated, and at least one optical element for shaping, directing and/or converting the electromagnetic radiation is arranged in the beam path.

A light projecting apparatus is disclosed. The apparatus has a head with first and second light sources. There is a first reflector and a second reflector respectively disposed proximate to the first and second light sources. Each of the first and second reflectors has a concave reflective surface and a convex reflective surface configured to form light emitted by the respective light source into an illumination pattern having a central region having a substantially uniform distribution of luminous intensity and a taper region having a tapered luminous intensity.

A LiDAR device is a light detection device including a light-emitting unit, a light-receiving unit, and an optical unit. In the light-emitting unit, a plurality of VCSEL elements respectively emitting a beam are arranged along a light source array direction. The light-receiving unit receives a reflected beam from a measurement area. The optical unit includes a first optical element and a second optical element, and forms a projected beam extending along the light source array direction. The first optical element has a negative power along a transmission direction of the beam on a main scanning plane that is orthogonal to the light source array direction. The second optical element is positioned behind the first optical element, and has a positive power along the transmission direction on the main scanning plane that is orthogonal to the light source array direction.

In a plane perpendicular to the optical axis (10) of a lens (2), the direction in which the cylindrical surface has zero curvature is the direction of generatrix of the lens (2), and the direction in which the cylindrical surface has non-zero curvature and that is orthogonal to the direction of generatrix is the direction of curvature of the lens (2). A light source (1) is disposed at the focal position (21) in the direction of generatrix on the side of the incident surface (3) of the lens (2), and emits light toward the incident surface (3) of the lens (2), the light having a difference between the divergence angle in the direction of generatrix of the lens (2) and the divergence angle in the direction of curvature of the lens (2).

There is provided assemblies for combining a group of laser sources into a combined laser beam. There is further provided a blue diode laser array that combines the laser beams from an assembly of blue laser diodes. There are provided laser processing operations and applications using the combined blue laser beams from the laser diode arrays and modules.