Abstract: A projection device includes a light source module for emitting an illumination beam, an optical engine module for receiving the illumination beam and forming an image beam, and a projection lens for receiving and projecting the image beam to an outside of the projection device. The optical engine module includes first and second shells coupled in a first direction, an elastic sealing member and electronic components. The shells form an accommodation space in which the electronic components are disposed. The elastic sealing member has opposite first and second surfaces. The first surface has an engagement groove in which a portion of the first shell is engaged. The second shell abuts against the second surface. Signal transmission components of the electronic components are disposed through the elastic sealing member to pass through the shells.

Abstract: A projector apparatus that can effectively reduce bending of a base plate supporting a lens shifting unit thereon and facilitates replacement of unit parts in the event of a failure is provided. The projector apparatus includes: a base plate attached inside a projector body; a lens supporting unit attached to the base plate and supporting a projection lens so as to be movable relative to the base plate; guiding mechanisms for guiding the lens supporting unit so as to be freely movable in a horizontal direction and a normal direction relative to the base plate; and fixing devices which fix the base plate to the projector body. The fixing devices include a plurality of first fixing devices provided at a peripheral edge of the base plate, and second fixing devices provided on an inner side of the plurality of first fixing devices.

Abstract: A counter substrate of an electro-optical device incluedes a first lens, a first optical path length adjustment layer, a second lens, and a second optical path length adjustment layer. A first partition portion is provided between the first lens and the first optical path length adjustment layer. A second partition portion is provided between the first optical path length adjustment layer and the second lens. The second partition portion includes, across the entire second partition portion in an extending direction thereof, a plurality of first openings bored through the second partition portion. Thus, the ITO film can be formed in a region, where the first optical path length adjustment layer is covered by the second partition portion, under a condition similar to the condition for a region, where the first optical path length adjustment layer is not covered by the second partition portion.

Abstract: An image display device includes a display unit which displays a first image and a second image, and a projection optical system which directs light of the first image and light of the second image toward a windshield. The display unit displays the first image and the second image in different display areas on the same plane. The projection optical system sets an image point of the light of the first image and an image point of the light of the second image, so that a first virtual image and a second virtual image are formed at positions having different distances from a viewing point within a visible area.

Abstract: A light source device has a light source unit including a base member and a plurality of light emitting devices held in the base member, a heat receiving plate including an opening portion, to which the base member is fixed to cover the opening portion, and a heat diffusion member in contact with the base member via the opening portion. Heat from the light source unit is transmitted to the heat receiving plate and the heat diffusion member.

Abstract: According to one embodiment, a display device includes an optical modulation element configured to emit image light corresponding to an image by using illumination light from an illumination device, a polarization control element configured to emit first polarized light, and second polarized light on the basis of the image light receiving from the optical modulation element, a polarization separation element configured to transmit the first polarized light as transmitted light and reflect the second polarized light as reflected light, and a projector configured to project the transmitted light onto a first projection area of a projection plane, and projects reflected light onto a second projection area of the projection plane.

Abstract: An image generating unit includes an image generating part configured to generate an image from illumination light; a driving magnet configured to generate a magnetic field; a driving coil arranged in the magnetic field of the driving magnet; a heat radiating part coupled to the image generating part and configured to radiate heat of the image generating part. The driving magnet and the driving coil move the image generating part and the heat radiating part. The driving coil is placed at the heat radiating part via a substance, thermal conductivity of the substance being lower than thermal conductivity of the heat radiating part.

Abstract: A light source apparatus that irradiates an illuminated area with illumination light includes at least one light source that emits light and at least one beam shaping element that includes a first optical element and a second optical element and provides a beam shaping effect of shaping the cross-sectional shape of the light to produce the illumination light. The first optical element provides the beam shaping effect. The second optical element has one of the function of outputting, when part of the light is incident on the second optical element, the part of the light in the same direction in which the part of the light travels immediately before the incidence on the second optical element and the function of deflecting, when part of the light is incident on the second optical element, the part of the light toward the illuminated area and outputting the deflected light.

Abstract: The light source apparatus includes a light source and a wavelength conversion element containing quantum rods capable of converting a first linearly polarized light from the light source into a second linearly polarized light whose wavelength is different from that of the first linearly polarized light3. The apparatus further includes a changer configured to change a polarization direction of the first linearly polarized light entering the quantum rods.

Abstract: An illumination system includes a blue light source, an excitation light source, a first light splitting element and a wavelength conversion element. The blue light source provides a blue light beam. The excitation light source provides an excitation light beam. The first light splitting element and the wavelength conversion element are disposed on transmission paths of the blue light beam and the excitation light beam. The wavelength conversion element includes a diffusion region and a wavelength conversion region. In a first timing period, the excitation light beam passing through the first light splitting element is transmitted to the wavelength conversion region to be converted into an excited light beam. In a second timing period, the blue light beam passing through the diffusion region is transmitted to the first light splitting element. The excited light beam includes a first red light beam and a green light beam.

Abstract: An illumination system including an excitation light source, a first light splitting element, a wavelength conversion element, a second light splitting element, a third light splitting element and a fourth light splitting element is provided. The excitation light source provides a light beam. The first light splitting element allows the light beam to pass through to generate a first light beam or reflects it to generate a second light beam. The wavelength conversion element is located on a light path of the first light beam. The second light splitting element allows the first light beam to pass through to be transmitted to the wavelength conversion element to generate a third light beam and reflects the third light beam. The third light splitting element reflects the second light beam. The fourth light splitting element allows the second light beam to pass through and reflects the third light beam.

Abstract: An image projection system may include a translucent or transparent projection screen and multiple lenticules disposed on or within the projection screen. The image projection system may also include a projector to project multiple images onto the projection screen. The images may include multiple views of a scene, and the projector may simultaneously project the images to generate a three-dimensional display of the scene.

Abstract: In an image projection device including a laser beam source and a diffractive optical element provided on an optical path of a laser beam L from the laser beam source, a transparent member having a refractive index higher than that of an area ahead of an emission surface on the optical path of the laser beam L and a diffractive optical element is formed on an emission surface of the transparent member. The laser beam L is obliquely incident on the diffractive optical element. The diffractive optical element generates a diffraction image in an area which is not overlapped with zeroth order light LR of the laser beam L and an area occupied by a conjugate image, and is arranged in a direction to irradiate a screen with diffracted light forming the diffraction image while substantially eliminating the zeroth order light and the diffracted light forming the conjugate image.

Abstract: A control device includes an acquirer, a timing detector, a controller, and a driver. The acquirer acquires an output voltage from a light detector for receiving laser light scanned by a light source and a deflector. The timing detector detects reference timings of the laser light on forward and backward paths in a scanning direction based on the output voltage. The controller generates a control signal for causing the light source and the deflector to draw a forward path image on a scanned surface from time obtained by adding a time to the reference timing on the forward path and to draw a backward path image on the surface from time obtained by adding a time to the reference timing on the backward path. The driver draws the images by driving the deflector, based on the control signal.

Abstract: In a projection-type display apparatus, a polarization converter, a light-incident-side polarizer, a first liquid crystal device, a first light-exiting-side polarizer, and a retardation film are arranged along the optical path from a light source section to a projection system. The light-incident-side polarizer is a wire grid polarizer including a wire grid integrally provided on the light exiting surface of the polarization converter, and the light-incident-side polarizer and the polarization converter form a single optical part. The first light-exiting-side polarizer is a wire grid polarizer including a wire grid integrally provided on the light exiting surface of the first liquid crystal device, and the first light-exiting-side polarizer and the first liquid crystal device form a single optical part.

Abstract: Devices and methods for 3D sensing are provided. The device comprising an optical device configured and operable to produce at least one structured light pattern, the optical device comprising a light source unit configured and operable to generate one or more light beams along predetermined one or more optical paths, and a diffractive optical unit accommodated in said one or more optical paths, at the output of said light source unit such that the diffractive optical unit faces the light source unit, the diffractive optical unit being non-periodic and two-dimensional and comprising at least one resonance-domain diffractive optical element configured to create 2D spatially variable pattern in a predetermined operative wavelength range, the diffractive optical unit being thereby configured and operable as a beam shaper for said one or more light beams to thereby create said at least one structured light pattern.

Abstract: A projector includes: an image interface unit; a projection unit which projects a projection image based on image information, onto a screen; a setting unit which sets an aspect ratio of the projection image; a projection control unit which causes the projection unit to project the projection image according to the aspect ratio set by the setting unit; and an EDID processing unit which causes first information about an aspect ratio of the image information to be transmitted to a PC. If the setting unit changes the aspect ratio of the projection image from a first aspect ratio to a second aspect ratio, the EDID processing unit causes the first information based on the second aspect ratio to be transmitted to the PC.

Abstract: A projection apparatus and an illumination system are provided. The illumination system includes an excitation light source and a light wavelength conversion module. The excitation light source is adapted to provide an excitation beam. The light wavelength conversion module includes a first phosphor wheel and a second phosphor wheel. The second phosphor wheel is disposed adjacent to the first phosphor wheel, and the first phosphor wheel and the second phosphor wheel are respectively disposed on transmission paths of a first part and a second part of the excitation beam, such that during a period that the excitation light source is turned on, the first phosphor wheel and the second phosphor wheel are both irradiated by the excitation beam. The illumination system of the invention avails improving phosphor conversion efficiency and avoiding burning the phosphor powder. The projection apparatus has good performance.

Abstract: Laser energy has a non-uniform energy distribution in its profile such that at least one first portion of the laser energy is more intense than at least one second portion of the laser energy. The laser energy is absorbed using a beam dump having an absorbing surface, which converts the laser energy into thermal energy. A shape of the absorbing surface is based on the profile. At least one first portion of the absorbing surface has one or more first angles of incidence with respect to the laser energy and receives the first portion(s) of the laser energy. At least one second portion of the absorbing surface has one or more second angles of incidence with respect to the laser energy and receives the second portion(s) of the laser energy. The one or more first angles of incidence are larger than the one or more second angles of incidence.

Abstract: A projecting apparatus includes an illuminating system and a first sensing module. The illuminating system includes a light source module and a filter element. The first sensing module is disposed beside the filter element, and includes a first light emitter and a first light sensor. The first light emitter emits a first sensing light. Outside the transmission path of the light beam, a first and a second filter regions of the filter element are sequentially cut into a transmission path of the first sensing light. When the first filter region is cut into the transmission path of the first sensing light, the first light sensor generates a first sensing signal, and when the second filter region is cut into the transmission path of the first sensing light, the first light sensor generates a second sensing signal, and the first sensing signal is different from the second sensing signal.