A light irradiation apparatus (31) includes a light source unit (40) and an irradiation optical system (5). In the light source unit, light source parts (4) arrayed in a plane emit laser light toward the irradiation optical system from different directions along the plane, and by the irradiation optical system, the laser light is guided along an optical axis (J1) to an irradiation plane (320). The irradiation optical system includes a division lens part (62), an optical path length difference generation part (61), and a condensing lens part (63). The division lens part includes element lenses (620) that divide light incident from the light source parts. The optical path length difference generation part includes transparent parts (610) having different optical path lengths from each other, and light that has passed through the element lenses respectively enters the transparent parts. The condensing lens part superimposes irradiation regions (50) of the light from the transparent parts on each other on the irradiation plane. Accordingly, the irradiation plane can be irradiated with high-intensity light having a uniform intensity distribution.

Described is an arrangement for the transformation of laser radiation. A projection system for generating spatially modulated laser radiation includes an optical arrangement for transforming laser radiation, a field lens, a spatial light modulator and a projection arrangement. By means of the optical arrangement, incidental laser radiation in a first direction (E) is reflected on an aspherically curved, reflective surface in a second direction (R), where in a plane perpendicular to the first direction (E) the laser radiation has an inhomogeneous beam profile (GB1, G2) with a first beam axis (A) and a second beams axis (B) perpendicular to the latter, and the aspherical curvature is designed, during the reflection on the reflective surface, to transform the inhomogeneous beam profile of the laser radiation for the first beam axis (A) and/or the second beam axis (B) respectively into a homogenous top-hat beam profile (H).

An illumination structure includes a substrate having a front surface on which a light source is attached, and a reflector arranged on the front surface of the substrate to surround the light source, wherein the reflector includes a reflection wall part having a regular pyramid-like shape, and four inside surfaces of the reflection wall part having the regular pyramid-like shape include steep slope parts, respectively, having an angle larger than 7.5 degrees and smaller than 15 degrees with respect to a direction of an optical axis of the light source as a standard.

Subject matter disclosed herein relates to improving luminance and reducing color shifts in electrowetting displays. The electrowetting display comprises a plurality of electrowetting elements separated by partition walls and spacers. The spacers and/or partition walls are reflective. When incident light that enters a pixel or subpixel is reflected and encounters a spacer and/or partition wall, the light is reflected such that the reflected light exits the pixel or subpixel into which the incident light entered. This improves luminance and reduces color shifts of the electrowetting display.

An example optical device for backlighting includes a receiver disposed in a mobile device to receive ambient light. The optical device also includes a concentrator to concentrate the received ambient light received through the receiver. The optical device further includes a channeler to direct the ambient light beneath a surface of the mobile device to a digital display of the mobile device.

The present invention provides strategies for mitigating the deleterious effects of differential thermal expansion in composite panel structures. The principles of the present invention are particularly useful in the field of concentrating solar power. The principles of the present invention can be used in CSP applications to make composite mirror panel structures with improved characteristics for accommodating differential thermal expansion between components of the composite. Significantly, the composite mirrors structures can still be securely attached to other heliostat components such as a drive mechanism while still having the ability to accommodate differential thermal expansion between the skins of a composite mirror panel helps to limit energy losses due to slope errors.

An ultraviolet curing device is proposed, which includes a sample stage and a curing module. The curing module is configured to emit ultraviolet rays to make the ultraviolet rays irradiate a to-be-cured display panel at a specific angle. The curing module includes a first curing module and a second curing module, and the first curing module and the second curing module are disposed symmetrically to each other.

A deformable mirror with variable curvature including: a plate having a reflective face and opposite hidden face and whose shape has a center (C) and radiuses (r), and at least one actuator intended to exert a force on the hidden face in order to deform the plate. The plate comprises a plurality of primary and secondary portions. The secondary portions being interposed between the primary portions, each of the primary portions extending locally substantially along and on either side of a respective radius (r) among said radiuses (r), and having a stiffness different from the adjacent secondary portions. The deformable mirror is intended to the introduction or the correction of an optical aberration in a light beam.

Provided are a lens module and a light emitting diode package including the lens module, the lens module, including: a lens part; support parts extending from the outside of the lens part; and connection parts formed on the support parts, respectively.

A reflective article includes a reflector and a light source. The reflector includes a polymer layer having a first side configured to house a light source, and an opposite second side, and a metal layer disposed on the opposite second side of the polymer layer. The light source is located adjacent to the first side of the polymer layer. A method of making the reflective article is provided, including providing the above-described reflector, and locating a light source adjacent to the first side of the polymer layer. A method of making the reflector is also provided, including providing the polymer layer having a first side configured to house a light source, and an opposite second side, and metallizing at least a portion of the second side. The reflective article is useful for mobile electronic devices.