Abstract: A first optical group that forms an intermediate image and a second optical group that enlarges and projects the intermediate image formed by the first optical group satisfy a variety of conditions. Therefore, first of all, in a case where a projection system is incorporated in a projector, an ultrawide field angle that allows enlargement and projection of an image at a half angle of view of 50° or greater is achieved. Further, an optical path deflection system including two optical path deflectors is disposed between the first optical group and the second optical group to allow the optical path to be folded with deterioration in performance of the projection system suppressed.

Abstract: A projection apparatus including a light source section, a projection section that projects light outputted from the light source section, and a control section that acquires captured image data produced by an imaging section, identifies a region of a projection target contained in the acquired captured image data and an image captured position of the region in the captured image data, determines a projection range over which the projection section projects light and a wavelength band of the light to be projected over the projection range based on the identified region and image captured position, and controls the projection section to cause the projection section to project light in the determined wavelength band over the determined projection range.

Abstract: A projector projects image light generated by an image generation unit, as an enlarged image via a projection system. The incident position of the image light on the projection system is moved by a lens shift mechanism. The projection system forms an intermediate image in the course of the optical path. A light-shielding mask is provided at an image forming position of the intermediate image. A light-shielding area by the light-shielding mask includes an area that does not overlap the intermediate image within a range of an effective image forming area at the image forming position of the intermediate image. For example, the light-shielding area is an area on the side opposite to the side to which the intermediate image is shifted, of the effective image forming area.

Abstract: A light source device includes a solid light source, a transmissive fluorescent plate having a phosphor that is excited by excitation light for emitting fluorescent light in a traveling direction of the excitation light, and a color filter plate that cuts a part of a wavelength region of light supplied from the fluorescent plate for trimming the light into desirable color light. The light source device further includes a first reflective film disposed on a light path extending from the fluorescent plate to the color filter plate for reflecting at least a part of the excitation light.

Abstract: Projector display systems comprising a light dimmer and first modulator are disclosed. The light dimmer may comprise an adjustable iris, adjustable light sources and/or LCD stack that is capable of lowering the luminance of the light source illuminated the first modulator. The first modulator may comprise a plurality of analog mirrors (e.g. MEMS array) and the second modulator may comprise a plurality of mirrors (e.g., DMD array). The display system may further comprise a controller that sends control signals to the light dimmer and first modulator. The display system may render a desired dynamic range for rendering a projected image by a combination of such control signals.

Abstract: An electronic device according to embodiments of the invention include a fixing target member, a fixing portion having formed thereon a frame portion that is erected around a circumference of the fixing target member, a packing having a groove and disposed between the frame portion and the fixing target member, a core member disposed in the groove, and a pressing member that presses the core member towards the packing.

Abstract: A cover window includes: a base film disposed on a display panel of a display device which displays an image with light; and porous nanoparticles embedded in the base film at a side of the base film opposite to that at which the display panel is disposed.

Abstract: An image projection device includes an emitting unit, a shaping unit, an adjusting unit, a scanning unit, and a projection optical system. The projection optical system is disposed such that a position of a front side principal plane of the projection optical system is at a position which is separated from the scanning unit by a focal length of the projection optical system.

Abstract: A wavelength conversion element includes a wavelength conversion layer having a first surface on which excitation light is incident, a second surface located on the side opposite the first surface, a plurality of phosphor particles that convert the excitation light in terms of wavelength to produce fluorescence, and a binder that holds the plurality of phosphor particles. The plurality of phosphor particles have a particle diameter distribution, and the minimum particle diameter in the particle diameter distribution of a plurality of the phosphor particles contained in a first region located on the side facing the first surface is greater than the minimum particle diameter in the particle diameter distribution of a plurality of the phosphor particles contained in a second region located on the side facing the second surface.

Abstract: A projector a cooler configured to cool a cooling target based on transformation of a refrigerant into a gas. The cooler includes a refrigerant generator configured to generate the refrigerant and a refrigerant sender configured to send the generated refrigerant toward the cooling target. The refrigerant generator includes a moisture absorbing/discharging member, a first air blower configured to deliver air outside the projector to the moisture absorbing/discharging member, a heat exchanger connected to the refrigerant sender, a heater configured to heat the moisture absorbing/discharging member, and a second air blower configured to deliver, to the heat exchanger, air around a portion of the moisture absorbing/discharging member that is the portion heated by the heater. The heat exchanger, by cooling the air having flowed into the heat exchanger, generates the refrigerant from the air having flowed into the heat exchanger. The moisture absorbing/discharging member is fixed.

Abstract: A novel spatial light modulator (SLM) includes a cover glass, and modulation layer, and a plurality of pixel mirrors, and separates unwanted, reflected light from desired, modulated light. In one embodiment, a geometrical relationship exists between the cover glass and the pixel mirrors, such that light that reflects from the cover glass is separated from light that reflects from the pixel mirrors and is transmitted from the SLM. In one example, one of the cover glass or the pixel mirrors is angled with respect to the modulation layer. In another example embodiment, the cover glass has a particular thickness, which introduces destructive interference between light that reflects from the top and bottom surfaces of the cover glass. In another embodiment antireflective coatings are disposed between optical interfaces of the SLM. In another embodiment, light from the SLM is directed through an optical filter to remove unwanted light.

Abstract: A rearview mirror for a vehicle includes a substrate having a reflective surface thereon and an actuation mechanism coupled within the substrate. The actuation mechanism includes a socket plate rotatably coupled within the cavity of the housing at a first end thereof and extending to a second end and a link element rotatably coupled within the cavity of the housing adjacent the second end of the socket and engaged with the socket plate to rotate the socket plate about the first end by rotation of the link element. The actuation mechanism further includes a clutch plate rigidly coupled with the link element about an axis thereof and an input element positioned on, rotatable about, and slideable along the axis of the link element. The input element releasably engages the clutch plate under a force applied thereto along the axis.

Abstract: A projector includes a casing, a lens, a bracket, a support member, a first spacer and a first fixing member. The lens is connected to the casing. The bracket is connected to the casing and has a through hole formed thereon. The support member is inserted into the through hole and abuts against the lens. The first spacer is disposed on the support member and has a first curved surface and the first curved surface faces the through hole. The first fixing member is disposed on the support member and pushes the first spacer towards the bracket, such that the first curved surface contacts a periphery of the through hole.

Abstract: A projector includes a light source unit having a light source and a first cooling section adapted to transmit heat of the light source to a first liquid refrigerant circulating, an optical unit having a light modulation device and a second cooling section adapted to transmit heat of the light modulation device to a second liquid refrigerant, a cooling unit adapted to cool the first liquid refrigerant and the second liquid refrigerant, a first connection member connecting the light source unit and the cooling unit to each other, and a second connection member connecting the optical unit and the cooling unit to each other, and at least one of a set of the light source unit and the cooling unit, and a set of the optical unit and the cooling unit is configured to detachably be attached to each other.

Abstract: A dual-band refractive inverse telephoto lens system configured for mid-wave infrared (MWIR) and long-wave infrared (LWIR) operation. In certain examples the dual-band refractive inverse telephoto lens system includes first, second, third, and fourth lenses, each constructed from a material that is optically transparent in the mid-wave infrared and long-wave infrared spectral bands, and has an external pupil coincident with an aperture stop of the refractive inverse telephoto lens system, the aperture stop being located between the first, second, third, and fourth lenses and the infrared imaging detector to allow for 100% cold shielding.

Abstract: An image projection apparatus includes an image signal inputter configured to input an image signal, a first light modulation element configured to modulate light from a light source, a second light modulation element configured to modulate light from the first light modulation element, an optical system configured to guide a projection image in which an image formed by the light modulated by the first light modulation element and an image formed by the light modulated by the second light modulation element are superimposed on each other to a projection optical system, a first driver configured to drive one of the first and second light modulation elements based on the image signal, and a second driver configured to drive the other of the first and second light modulation elements based on a luminance correction data irrelevant to the image signal.

Abstract: The present invention relates to a stereoscopic image display through which after the incident light incident from a projector lens is split into different lights according to polarized components, by selectively delaying the phase of each split light by a predetermined value through an on/off operation of an optical switch module, each light is converted to have the same polarized component, and the synthesized light obtained by synthesizing the lights having the same polarized component is projected on a screen so as to double the luminance on the screen.

Abstract: An apparatus and method for controlling the spectrum of stimulated Raman scattering that is used for despeckling of digitally projected images. The stimulated Raman scattering is utilized to add wavelength diversity for reduced speckle and to change the color of the light to a more desirable combination of wavelengths. Digital projection with color-sequential projectors may be enabled by alternately switching the Raman spectrum between green and red. Improved projector transmission may be achieved by minimizing the amount of yellow light generated in the Raman spectrum.

Abstract: A projection control apparatus that controls projection using a plurality of projection devices that project optical images onto a projection plane. The projection control apparatus obtains a projected area of each of the plurality of projection devices on the basis of an image obtained by capturing the projection plane. The projection control apparatus then executes a first adjustment process of adjusting the projected area of each projection device so as to cause the projected areas of other projection devices, among the plurality of projection devices, that are not a reference projection device, to correspond to the projected area of the reference projection device. The projection control apparatus cancels geometric correction applied in the other projection devices before starting the first adjustment process and does not cancel geometric correction applied in the reference projection device before starting the first adjustment process.

Abstract: This marker comprises: a plurality of convex surfaces (121) that are formed of a translucent material and that are disposed at least along an X direction; and a plurality of to-be-detected parts which are disposed at front/rear positions with respect to the plurality of convex surfaces (121) and which are projected onto the plurality of convex surfaces (121) as optically detectable images. The plurality of to-be-detected parts are disposed so as to be positioned on the same virtual plane which is perpendicular to a Z direction of the marker. The virtual plane is positioned between a focal point (F) on an image plane (B) of the convex surface (121) in the Z direction and a high point (F) of the image plane.