An optical apparatus includes a first optical system configured to condense illumination light from a light source, a dividing unit configured to divide the illumination light from the first optical system into a plurality of illumination lights in a plurality of areas, a deflecting unit configured to scan an object by deflecting the plurality of illumination lights, and a light guide unit configured to guide the plurality of illumination lights from the dividing unit to the deflecting unit.

A method of additive manufacture is disclosed. The method may include creating, by a 3D printer contained within an enclosure, a part having a weight greater than or equal to 2,000 kilograms. A gas management system may maintain gaseous oxygen within the enclosure atmospheric level. In some embodiments, a wheeled vehicle may transport the part from inside the enclosure, through an airlock, as the airlock operates to buffer between a gaseous environment within the enclosure and a gaseous environment outside the enclosure, and to a location exterior to both the enclosure and the airlock.

A method of additive manufacture suitable for large and high resolution structures is disclosed. The method may include sequentially advancing each portion of a continuous part in the longitudinal direction from a first zone to a second zone. In the first zone, selected granules of a granular material may be amalgamated. In the second zone, unamalgamated granules of the granular material may be removed. The method may further include advancing a first portion of the continuous part from the second zone to a third zone while (1) a last portion of the continuous part is formed within the first zone and (2) the first portion is maintained in the same position in the lateral and transverse directions that the first portion occupied within the first zone and the second zone.

An apparatus and a method for powder bed fusion additive manufacturing involve a multiple-chamber design achieving a high efficiency and throughput. The multiple-chamber design features concurrent printing of one or more print jobs inside one or more build chambers, side removals of printed objects from build chambers allowing quick exchanges of powdered materials, and capabilities of elevated process temperature controls of build chambers and post processing heat treatments of printed objects. The multiple-chamber design also includes a height-adjustable optical assembly in combination with a fixed build platform method suitable for large and heavy printed objects.

A method of additive manufacture is disclosed. The method may include restricting, by an enclosure, an exchange of gaseous matter between an interior of the enclosure and an exterior of the enclosure. The method may further include running multiple machines within the enclosure. Each of the machines may execute its own process of additive manufacture. While the machines are running, a gas management system may maintain gaseous oxygen within the enclosure at or below a limiting oxygen concentration for the interior.

A laser system may include a laser resonator configured to emit an input laser beam having an elliptical cross-sectional shape. The laser system also may include first reflective device configured to reflect the input laser beam to produce a first reflected laser beam. The first reflective device may include a spherical surface for reflecting the input laser beam. The laser system also may include a second reflective device configured to reflect the first reflected laser beam to produce a second reflected laser beam. The laser system also may include a coupling device configured to focus the second reflected laser beam to produce an output laser beam. The coupling device may include a spherical surface for receiving the second reflected laser beam. The laser system also may include an optic fiber configured to transmit the output laser beam for emission of the output laser beam onto a target area.

Provided are a laser combining apparatus and a display device. The laser combining apparatus includes a first group of light sources including first light source arrays, a second group of light sources including second light source arrays, a reflection apparatus including first and second reflection strips, a light converging apparatus and a light collection apparatus. Each first reflection strip reflects light emitted from at least one first light source array, each second reflection strip reflects light emitted from at least one second light source array, and light emitted from each first reflection strip and light emitted from each second reflection strip are also guided to the light converging apparatus. The light converging apparatus converges the light emitted from the first reflection strips and the second reflection strips to the light collection apparatus. The light collection apparatus collects the light converged by the light converging apparatus and then emitting same.

The invention relates to a device for focusing a photon beam into a material. The device comprises: means for splitting the photon beam into a plurality of component beams; means for focusing the component beams at a predetermined focal depth within the material; and means for adapting the wavefronts of the component beams based at least in part on the focal depth.

The present invention pertains to a lighting device for an automobile comprising a housing, a plurality of light sources arranged inside the housing and an optical element arranged in front of the plurality of light source. The optical element includes an input surface, an output surface and a transparent portion that is disposed between the input surface and the output surface. In addition, the optical element includes at least one part of the transparent portion having a blocking portion that is created using a laser treatment. The blocking portion is configured to block at least a part of the plurality of light beams from passing through the optical element.

An imaging device according to the present invention includes an illumination unit 20 containing a light source 21 for emitting illumination light 2, and a lens group 22 for irradiating an imaging object 1 with the illumination light 2 emitted from the light source 21, and an imaging unit 10 for imaging the imaging object 1. A part of the illumination light 2 is shielded by a light shielding component 40.