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.

Abstract: An embodiment of a light source device according to the invention includes: a light source unit configured to emit light; a first optical element on which the light emitted from the light source unit is incident; a first drive unit configured to rotate the first optical element; and a control unit configured to control the light source unit and the first drive unit. The control unit is configured to continue rotating the first optical element during a first period until a first predetermined time passes after the light source unit is turned off.

Abstract: A waveguide based fused vision system includes a helmet mounted or head worn sensor module and a display assembly. The display assembly includes a frame including a pair of waveguide combiners and a pair of projectors associated with waveguide combiners. The display assembly also includes a sensor module. The pair of projectors is disposed on opposite sides of a frame. The sensor module is disposed substantially above the frame and includes a first sensor, a second sensor, a video processing circuit, and a symbol generator. The video processing circuit is configured to merge first sensor information from the first sensor and first symbols from the symbol generator and to merge second symbols and the second sensor information for displaying conformally the real world scene.

Abstract: A heat exchanging apparatus includes one inflow channel having an inflow port via which a liquid refrigerant flows in, one outflow channel having an outflow port via which the liquid refrigerant flowing through the outflow channel flows out, and a plurality of channels arranged in a flow direction of the liquid refrigerant flowing through the inflow channel, the plurality of channels connecting the inflow channel the outflow channel and causing the liquid refrigerant flowing from the inflow channel to flow into the outflow channel. The plurality channels are connected to the inflow channel over a portion from the inflow port to a terminal end of the inflow channel. The inflow channel includes a buffer section disposed between the inflow port and the terminal end, the buffer section configured no reduce a flow rate of the liquid refrigerant flowing through the inflow channel.

Abstract: To provide an image display device configured to more faithfully display a projection image on a region where a physical quantity change has occurred. An image display device of the present invention includes a flow rate sensor and a screen on which an image from a projector is projected, and a control is performed such that the image is projected on the screen so as to include a position of the flow rate sensor that has detected the physical quantity change, and the image changes corresponding to a measured value change of the flow rate sensor. Preferably, a plurality of the physical quantity detection units are disposed, and the control is performed such that the image changes corresponding to the measured value changes in the respective physical quantity detection units.

Abstract: A light source device for a projection display apparatus includes a phosphor, an excitation light source, a surface-curved dichroic mirror having a curved surface in which a side on which excitation light is incident is convexly curved, and a converging lens between the surface-curved dichroic mirror and the phosphor. The excitation light source is configured to output the excitation light for exciting the phosphor. The surface-curved dichroic mirror is configured to cause the excitation light from the excitation light source to be reflected on the curved surface and fluorescence from the phosphor to pass through the curved surface. The surface-curved dichroic mirror neither substantially converges nor substantially diverges the light that passes through, but performs a diverging operation on the excitation light that is reflected on the curved surface so as to form a virtual image.

Abstract: A display device includes a display device main body, a first display surface, and a second display surface, and the display device main body includes a first emitting portion, a second emitting portion, and a housing accommodating them. The first emitting portion emits first display light. The first display surface is provided on a transmission member transmitting light and reflects, to a viewing position side, the first display light being emitted from the first emitting portion. The second emitting portion emits second display light that is different from the first display light. The second display surface is provided on a non-transmission member shielding light and forming at least a part of a light path of the first display light to the first display surface from the first emitting portion and reflects, to the viewing position side, the second display light being emitted from the second emitting portion.

Abstract: A light source device comprising: a light source section which generates any one of blue light, red light, and green light; a phosphor which generates a fluorescence including the two colors other than the color of the light emitted from the light source section; a color-changing section which changes one of the two colors of the fluorescence emitted from the phosphor to another color regularly and irradiates it to the image-forming element; and a light path-switching section which switches a light path in which a fluorescence excited by the color light emitted from the light source section passes towards the color-changing section and a light path in which the color light emitted from the light source section passes towards the image-forming element regularly.

Abstract: An illumination system includes a surface configured to have an imaging target placed thereon, a light source, a beam splitter and at least a first mirror. The beam splitter is configured to split the beam of light from the light source and the first mirror is configured to reflect a first beam from the beam splitter onto the surface with the imaging target. An imaging system includes an imaging surface configured to have an imaging target placed thereon, a mirror, and a capturing device. The capturing device is configured to capture an image of the imaging target through a path of emitted light that extends from the imaging target, reflects off the mirror, and to the capturing device. The mirror, the capturing device, or both are configured to move in a diagonal direction with respect to the imaging surface to reduce a length of the path of emitted light. Systems and methods to calibrate an imaging system to remove or reduce non-uniformities within images of samples due to imaging system properties.

Abstract: Apparatus (1) for generating a light beam via at least first and second light sources (2, 3). During operation, the light sources (2, 3) emitting light at the same wavelength. The light sources are arranged such that the beam profile (11) of the first light source is rotated relative to the beam profile (12) of the second light source by a rotation angle (D) about an axis (A) in the direction of propagation. A beam rotation element (4) is located downstream of at least one of the light sources, which causes the beam profile (11, 12) to rotate such that the beam profile (11, 12), after passing through the beam rotation element (4) in a plane perpendicular to the direction of propagation (A) of the light, is oriented substantially identically to the beam profile of the other light source (2, 3) in the plane perpendicular to the direction of propagation.

Abstract: A head-up display (HUD) apparatus is provided. The HUD apparatus includes a display holder configured to hold a single planar multiple-pixel display. The HUD apparatus also includes a single reflective and transmissive lens that is configured to reflect an image from the planar multiple-pixel display toward a predetermined location of a user. The reflective and transmissive lens is further configured to at least partially collimate light from the planar multiple-pixel display to focus the image at a distance in front of the reflective and transmissive lens for each eye of two eyes of the user.

Abstract: Described examples include a projector including a first prism having a dichroic layer. A second prism has a first spatial light modulator on a first surface, and a first light source directed through a second surface of the second prism to the first spatial light modulator. The first spatial light modulator is operable to modulate the first light to provide modulated first light that is reflected off the second surface of the second prism and the dichroic layer to projection optics. A third prism has a second spatial light modulator on a first surface and a second light source directed through a second surface to the second spatial light modulator. The second spatial light modulator is operable to modulate the second light to provide modulated second light that is reflected off the second surface of the third prism and passes through the dichroic layer to the projection optics.

Abstract: The present invention relates to a system and method for selecting and transmitting images, particularly commercial messages and advertisements, to a projecting device mounted on a vehicle for projection and display of the images on the surface of the vehicle.

Abstract: An apparatus for generating light having a plurality of wavelengths comprises a housing (1) and light sources (2) inside the housing (1). The light sources (2) are especially in the form of laser diodes. Preferably, three light sources having different wavelengths are formed. The apparatus further comprises collimating lenses (3) for collimating a light beam emitted by the light sources (2), and beam guiding elements for bundling the light beams. The collimating lenses (3) are disposed in a positioning module (4) that allows the collimating lenses (3) to be placed in different positions during the manufacturing process of the apparatus.

Abstract: A projection lens unit (15) of a projector (10) is disposed in a state in which an optical axis (CL) of the projection lens unit deviates from a center of an image forming panel (14); a first lens holder (43) of a lens barrel (40) includes holding pieces (55a, 55b) that are provided at intervals in a circumferential direction of a first lens group (L1) and are engaged with a first portion (A1) of the first lens group positioned on a side to which the image forming panel is shifted, and a holding piece (55c) that is engaged with a second portion (A2) of the first lens group positioned on a side opposite to the side to which the image forming panel is shifted; and the linear expansion coefficient of each of the holding pieces is lower than the linear expansion coefficient of the holding piece.

Abstract: 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.

Abstract: The image projection system includes a projection-type display apparatus that projects an image onto a projection plane and has a first azimuth detector, the first azimuth detector detecting a projection azimuth; an imaging apparatus that images a projection screen of the image and has a second azimuth detector, the second azimuth detector detecting an imaging azimuth; and a signal processor that performs correction processing of the image. The signal processor includes an estimation unit and a correction unit, the estimation unit estimating an inclination of the projection-type display apparatus to the projection plane on the basis of the projection azimuth detected by the first azimuth detector, the imaging azimuth detected by the second azimuth detector, and the captured image acquired by the imaging apparatus; and the correction unit correcting a shape of the projection screen on the basis of the inclination of the projection-type display apparatus estimated by the estimation unit.

Abstract: A projector includes a semiconductor die including a digital micromirror device; and a first integral optical layer attached to the semiconductor die. The first integral optical layer includes a first optical lens and a first diffractive optical element. A second integral optical layer is attached to the first integral optical layer. The second integral optical layer includes an aperture stop and a second diffractive optical element. A third integral optical layer is attached to the second integral optical layer. The third integral optical layer includes a second optical lens and a light source mount. The semiconductor die, the first integral optical layer, the second integral optical layer and the third integral optical layer are stacked to form an optical path through the first and second diffractive optical elements, reflect off the digital micromirror device, and pass through the first optical lens, the aperture stop and the second lens.