An optical arrangement, comprises first and second optical elements. The first optical plate is for collimating light from a light source to generate collimated light, which is provided to the second optical element. The second optical element acts an optical integrator homogenizing the light. The second optical element further generates a light output beam which has a spread of output angles which is dependent on the position. This means that the output spread of output angles can be controlled by controlling the light reaching the second optical plate and thus by controlling the illuminated area on the second optical plate. This can be achieved by selection of the relative positions of the source and the optical plates.

A texture image acquiring device, a display device and a collimator are disclosed. The texture image acquiring device includes a collimator and an image sensor. The collimator includes a lens array, a first diaphragm layer, and a second diaphragm layer. The lens array allows light rays to be converged and incident on the first diaphragm layer. The first diaphragm layer allows light rays incident on the first diaphragm layer to pass through and be incident on the second diaphragm layer, and restricts an angle of light rays capable of passing through the first diaphragm layer. The second diaphragm layer allows light rays incident on the second diaphragm layer to pass through, and restricts an angle of light rays capable of passing through the second diaphragm layer. The image sensor senses light rays incident on the image sensor for acquiring a texture image.

A laser module according to the present disclosure includes a laser diode, a first collimating lens, and a beam twister. The laser diode includes a plurality of emitters and emits laser light from each of the plurality of emitters through a light emission surface. The first collimating lens is provided at a first distance from the light emission surface of the laser diode and parallelizes a fast-axis-wise divergence of the laser light. The beam twister is provided at a second distance away from the first collimating lens and turns the laser light approximately 90 degrees. Each of the plurality of emitters has a width of 5 μm to 120 μm on the light emission surface. The plurality of emitters have a pitch of 295 μm to 305 μm on the light emission surface.

An illumination apparatus for providing light and for illuminating an illumination plane with a rectangular light distribution is provided. The illumination apparatus includes at least one light source configured to generate light, a collimation optical unit configured to collimate the light, a condenser optical unit configured to shape a rectangular angular distribution of the light coming from the collimation optical unit, and a freeform optical unit having at least one freeform area for modifying the angular distribution such that a rectangular light distribution is produced in an illumination plane that is optically connected downstream.

An apparatus for irradiating semiconductor material is disclosed having, a laser generating a primary laser beam, an optical system and a means for shaping the primary laser beam, comprising a plurality of apertures for shaping the primary laser beam into a plurality of secondary laser beams. Wherein the shape and/or size of the individual apertures corresponds to that of a common region of a semiconductor material layer to be irradiated. The optical system is adapted for superposing the secondary laser beams to irradiate said common region. Further, the use of such an apparatus in semiconductor device manufacturing is disclosed.

The invention relates to a device for applying laser radiation (13) to the outside of a rotationally symmetric component (11), comprising a plurality of lenses (10), which are designed and/or arranged in such a way that the axis of symmetry (12) of the component (11) lies at the focal point of each of the lenses (10).

An illumination optical system illuminates an image display element and includes a first lens array configured to divide light emitted from a light source, a second lens array configured to receive light from the first lens array, and a condenser optical system configured to guide light from the second lens array to the image display element, and a conjugate point of the image display element is located between an incident surface of the first lens array and an incident surface of the second lens array.

A light source apparatus according to an embodiment of the present technique includes a first light source section, a second light source section, a third light source section, and a synthesis section. The first light source section includes a plurality of red laser light sources arranged in an array. The second light source section includes a plurality of green laser light sources arranged in an array. The third light source section includes a plurality of blue laser light sources arranged in an array. The synthesis section synthesizes red laser light emitted from the first light source section, green laser light emitted from the second light source section, and blue laser light emitted from the third light source section to generate white light.

There is provided a near-to-eye display device, including: a pixel island array, a micro-lens array and a filter layer. The pixel island array and the micro-lens array are fixed with respect to and spaced apart from each other, and the micro-lens array includes plural micro-lenses. The pixel island array includes plural pixel islands in one-to-one correspondence with the plural micro-lenses, and each pixel island emits light to the corresponding micro-lens such that the light reach a predetermined viewing position after passing through the corresponding micro-lens. The plural pixel islands emit light of plural colors, and the filter layer includes plural filter portions in one-to-one correspondence with the plural pixel islands. Each filter portion is located between the corresponding pixel island and the corresponding micro-lens, and is close to the corresponding micro-lens. Each filter portion and light emitted by the corresponding pixel island have a same color.

Holographic optical elements for augmented reality (AR) devices and methods of manufacturing and using the same are disclosed. A disclosed system includes a holographic optical element (HOE), and a first light source to direct a first beam of light toward the HOE from a first direction. The first beam of light is collimated. The disclosed system further includes a second light source to direct a second beam of light toward the HOE from a second direction. The disclosed system also includes a decollimation lens positioned between the first light source and the HOE. The decollimation lens is to decollimate the first beam of light.