Within many applications impulse radio based ultra-wideband (IR-UWB) transmission offers significant benefits for very short range high data rate communications when compared with existing standards and protocols. In many of these applications the main design goals are very low power consumption and very low complexity design for easy integration and cost reduction. Digitally programmable IR-UWB transmitters using an on-off keying modulation scheme on a 0.13 microns CMOS process operating on 1.2V supply and yielding power consumption as low as 0.9 mW at a 10 Mbps data rate with dynamic power control are enabled. The IR-UWB transmitters support new frequency hopping techniques providing more efficient spectrum usage and dynamic allocation of the spectrum when transmitting in highly congested frequency bands. Biphasic scrambling is also introduced for spectral line reduction. Additionally, an energy detection receiver for IR-UWB is presented to similarly meet these design goals whilst being adaptable to address IR-UWB transmitter specificity.

An optical device includes a first optical system having an optical element, a second optical system having a lens and disposed at a reduction side of the first optical system, a first holding member holding the optical device, a second holding member holding the lens, and a movement mechanism configured to move the first holding member in optical axis directions. The optical element has a reflection surface. The first holding member has a first holding portion holding the optical element and a first coupling portion extending from the first holding portion to a second optical system side. The movement mechanism has a transport mechanism configured to move the first coupling portion along the optical axis directions, and a guide mechanism configured to guide the first holding member in the optical axis directions. The guide mechanism restricts rotation of the first holding member around the optical axis.

[Object] To provide a display apparatus that displays a projection image with an improved resolution.

[Solving Means] A display apparatus (10) includes a light-emitting device (13), a micro-lens array (5), and a scanning mechanism (54). The light-emitting device (13) includes a plurality of first light-emitting pixels and a plurality of second light-emitting pixels. The micro-lens array (5) includes a plurality of lenses (53) that projects the diffuse light rays emitted respectively from the first light-emitting pixel and the second light-emitting pixel, which have been made incident, to a first reaching position and a second reaching position located at desired different positions of a projection target object (3), respectively, the plurality of lenses being arranged at a pitch larger than a pixel pitch of the light-emitting pixels. The scanning mechanism (54) projects the diffuse light ray emitted from the first light-emitting pixel to the first reaching position via the micro-lens array (5) and then projects the diffuse light ray emitted from the second light-emitting pixel to the second reaching position via the micro-lens array (5).

A projector includes a main body and a projection lens. The main body includes a light source, liquid crystal panels that modulate light outputted from the light source, and a lens holder to and from which the projection lens is attachable and detachable. The projection lens projects the light modulated, and the lens holder includes a first lens holding mechanism and a second lens holding mechanism that hold the projection lens.

Embodiments of the present disclosure relate to mount apparatuses for digital micromirror devices of digital lithography systems and methods of mounting the digital micromirror devices. The mount apparatuses described herein retain spatial light modulators, such as DMDs. The mount apparatus enables the flattening of the DMD by providing a force such that the pair of contact pads contact the DMD. The DMD is positioned in a mounting frame of the mount apparatus. Contact pads of the mounting frame are operable to apply pressure to the DMD.

The application relates to the technical field of projection, and discloses a projection device which can improve the brightness of projection imaging. Part of the projection device comprises: an LED light source, a color wheel, a light-equalizing rod, a convex lens, a first Fresnel lens, an LCD panel and a projection lens; a ray of target light emitted by the LED light source emits a target alternating light through the color wheel, and the target alternating light comprises five monochromatic lights including red light, green light, blue light, yellow light and white light, and the five monochromatic lights enter the light-equalizing rod for uniform treatment to emit an uniform light spot, the uniform light spot is imaged at the first Fresnel lens through the convex lens, then irradiated into the LCD panel, and projected by the projection lens.

A projection display apparatus (1) according to one embodiment of the present disclosure includes: a light source section (110); an image formation section (300) including a display device (310) that modulates light from the light source section on the basis of an input picture signal to generate a projection image; a projection section (400) that projects image light generated by the display device; an unnecessary light processing section (610) to which unnecessary light that does not contribute to a generation of the projection image is to be applied, out of light to be applied to the display device; and a heat circulation section (620) that spatially and mechanically couples the projection section and the unnecessary light processing section, or couples spatially and via a fluid the projection section and the unnecessary light processing section.

A projection apparatus includes a display element that displays an image, a projection optical system that forms a projection image by projecting the image, an imaging unit that includes an imaging optical system which images a first region including an optical axis of the projection optical system in the projection image, and an imaging element which captures an image formed by the imaging optical system, and a processor that controls focus adjustment on a second region not including the optical axis in the projection image based on information acquired from the imaging unit, in which a position of the projection image is changeable by changing a relative position between at least a part of the projection optical system and the display element, and a predetermined conditional expression is satisfied.

A light engine includes an image surface, a projected light surface, a projection lens assembly, and a plurality of folding elements. The image surface has three image areas. The projected light surface has three light sources that provide light with different wavelengths. The plurality of folding elements are arranged along a light emitting axis. The image surface and the projected light surface are substantially in parallel with the light emitting axis, and there is an air gap located between the image surface and the projected light surface. The three light sources respectively correspond to the plurality of folding elements and respectively correspond to the three image areas, and the light emitting axis and the projection lens assembly are disposed on the same optical path.

A phase difference compensation element, including: a transparent substrate; a first optical anisotropic layer that includes an inorganic material, and has a C-plate retardance; and a second optical anisotropic layer that includes an inorganic material, and includes an oblique angle vapor deposition film that does not have an O-plate retardance, wherein the phase difference compensation element including the first optical anisotropic layer and the second optical anisotropic layer in combination has a quasi-O-plate retardance.