A laser component is provided, including a laser medium and a transparent heat transmitting member, at least one of which is oxide. Bonding surfaces of the laser medium and the transparent heat transmitting member are exposed to oxygen plasma, and thereafter the bonding surfaces are brought into contact without heating. The laser medium and the transparent heat transmitting member are bonded at atomic levels, their thermal resistance is low, and no large residual stress is generated due to the bonding taking place under normal temperature. The process of oxygen plasma exposure ensures transparency of their bonding interface. The laser medium and the transparent heat transmitting member are stably bond via an amorphous layer.

The disclosure provides a backlight module includes a light guide plate and a light source device configured to provide light to the light guide plate. The light source device includes a circuit board and a LED lamp electrically connected to the circuit board. The LED lamp is external to the light guide plate and at a lateral surface of the light guide plate. The circuit board is parallel to the light guide plate with a portion pressed on another lateral surface of the light guide plate. The disclosure provides a display device includes a frame and a liquid crystal display screen and the backlight module installed on the frame. The reflective film and the circuit board share a part of room for thickness, so the thickness of the backlight module is reduced and the module is thinned.

Technologies are described for devices and methods to convert first wavelength electromagnetic waves to a second wavelength. The devices may comprise a light source to produce first electromagnetic waves of the first wavelength. The devices may comprise a reflector which may define an optical cavity around the light source and include a first and second end. The first end may be disposed around the light source. The reflector may reflect the first electromagnetic waves towards the second end. The devices may comprise a wavelength conversion component disposed at the second end which may absorb the first electromagnetic waves and emit second electromagnetic waves at the second wavelength. The devices may comprise a fixture housing disposed around the light source and the reflector. The devices may comprise a retaining component attachable to, and removable from, the fixture housing. The retaining component may secure the wavelength conversion component to the fixture housing.

Embodiments of the present disclosure relate to a backlight module and a display device. The backlight module includes a light source and a light guide plate, the light source provided on at least one side of the light guide plate, wherein a side of the light guide plate facing the light source includes a light receiving surface facing the light source and a light reflecting surface above the light receiving surface, wherein an angle formed by the light receiving surface and the light reflecting surface in a direction toward inside of the light guide plate is an obtuse angle. According to the backlight module and the display device provided by the present disclosure, light waste may be reduced and the utilization ratio of light energy may be improved.

An integrated, vertically stacked device includes a laser in an enclosure, a wavelength converter in an enclosure, a mechanical interface for attaching the enclosures and maintaining the laser and wavelength converter in the same plane, and apparatus for directing light from the laser to the wavelength converter within the footprint of the integrated device.

The present invention provides a lighting device including a light source and an ink layer configured to transmit and reflect light from the light source. The ink layer contains a white pigment as a first pigment and a second pigment that gives a blue hue to the light passed therethrough.

A liquid crystal coating apparatus and a liquid crystal coating method are provided. The liquid crystal coating apparatus comprises a liquid crystal nozzle and a cooling device, the cooling device is located behind the nozzle along a movement trace of the nozzle, and the cooling device moves along the movement trace of the nozzle.

Disclosed are methods and apparatus for hermetically sealing a nonlinear optical (NLO) crystal for use in a laser system. A mounted NLO crystal, an enclosure base, a lid, and a plurality of window components are moved into an oven. A vacuum bake process is then performed on the mounted NLO crystal, enclosure base, lid, and plurality of window components until a humidity level that is less than a predefined amount is reached. The mounted NLO crystal, enclosure base, lid, and plurality of window components are moved from the oven onto a stage of a glove box that includes a sealing tool. In the glove box, the mounted NLO crystal is hermetically sealed into the enclosure base by sealing the lid and plurality of window components into openings of the enclosure base.

A second harmonic generator may include a combiner to combine a fundamental optical beam with a residual fundamental optical beam. The second harmonic generator may include a second harmonic crystal, coupled to the combiner, to generate a second harmonic optical beam from the fundamental optical beam and the residual fundamental optical beam. Upon generation of the second harmonic optical beam, the residual fundamental optical beam may exit the second harmonic crystal.

In-situ passivation of a nonlinear optical (NLO) crystal during operation of a characterization tool includes converting a laser beam of a selected wavelength to a converted laser beam of a harmonic wavelength via a nonlinear optical (NLO) crystal and passivating the NLO crystal during conversion to the converted laser beam of the harmonic wavelength.