Abstract: Examples of techniques for projection of images on reflective displays is described. In an example implementation, an image is projected on a reflective display. Regions of a first predefined color of the projected image are identified, and a first set of pixels of the reflective display that overlap the identified regions is biased to display a second predefined color by the first set of pixels.

Abstract: A projector includes a light source, a light modulator that modulates light outputted from the light source, a projection system that projects the light modulated by the light modulator, an image sensor that acquires information on an image projected by the projection system, an enclosure that accommodates the light source, the light modulator, and the image sensor, and a sensor holder that holds the image sensor. The projection system includes a lens barrel which accommodates a lens and through which the light modulated by the light modulator passes. The lens barrel is held by the enclosure via a lens barrel holder. The sensor holder is held by the lens barrel holder.

Abstract: A lens assembly includes a tube in which optical elements such as lenses or micro-lenses are individually fabricated by dispensing a volume of curable optical polymer into the tube, forming the desired shape for the optical element using one or more plungers having heads corresponding to a desired lensing curvature, applying radiant energy to the tube with the plungers in place to cure the optical polymer, and repeating as needed until the desired number of optical elements are fabricated within the lens assembly which may then be integrated as a single piece into a mobile or wearable device.

Abstract: A spacer, including a spacer body, a light transmissive film, and a light absorbing film, is provided. The spacer body has an outer side surface, an inner inclined surface, an object side surface, and an image side surface. The object side surface faces an object side and connects the outer side surface with the inner inclined surface. The image side surface faces an image side and connects the outer side surface with the inner inclined surface. The inner inclined surface is located between an optical axis of the spacer and the outer side surface, and includes an inner edge adjacent to the optical axis and an outer edge away from the optical axis. The inner edge forms a light through hole. The light transmissive film and the light absorbing film are disposed on the inner inclined surface. All surfaces facing the optical axis are inclined relative to the optical axis.

Abstract: Described examples include a device having a prism cube having a first side and a second side opposite the first side, the prism cube configured to: receive light comprising a first color light and a second color light, direct the first color light to the first side of the prism cube, and direct the second color light to the second side of the prism cube.

Abstract: A projection system for use with a polarized projection screen having a screen polarization direction. The projection system includes a projector operable to generate a polarized light output and project the polarized light output along a beam path towards the polarized projection screen. The polarized light output includes at least a first light component having a first polarization direction and a second light component having a second polarization direction orthogonal to the first polarization direction. The projection system also includes a waveplate received in the beam path. The waveplate is structured to rotate at least one of the first light component and the second light component such that the first light component and the second light component have a common polarization direction to be aligned with the screen polarization direction to minimize absorption loss of the polarized light output.

Abstract: A projection system, comprising a first light source which is an array light source, the first light source being divided into a plurality of illumination areas, and each illumination area may be independently controllable so as to generate a first illumination light field of which the brightness and darkness may be modulated; a second light source comprises an illumination unit and a light steering unit; the light steering unit redistributes illumination light emitted from the illumination unit to generate a second illumination light field of which the brightness and darkness may be modulated, wherein the first and second illumination light fields overlap to generate a combined light field. Also provided is a projection display method. The goal of simultaneously increasing image peak value brightness and lowering image dark field brightness is achieved, and a projection system that has a high contrast ratio is thus obtained.

Abstract: Improved corners for overhead frames having primary and secondary fasteners that are located within the distal rectangular periphery of alpha oriented overhead frame components so that the width of bundled overhead frames is reduced; protrusions leading to snagging are eliminated; obstructions to the preferred, industry-wide, disassembled frame orientation are precluded; and frame components may be rigidly bundled into the alpha orientation without the wasteful and time-consuming use of temporary materials.

Abstract: A projection module includes a light source, a reflective structure, and an optical structure. The light source emits laser light. The reflective structure includes a first reflective element and a second reflective element. The optical structure includes a first optical element and a second optical element. The reflective structure is disposed between the laser source and the optical structure. The first reflective element reflects a portion of the laser light towards the second reflective element, and transmits a remaining portion of the laser light towards the second optical element. The second reflective element reflects the laser light from the first reflective element towards the first optical element. The first optical element and the second optical element cooperatively project the laser beam towards an object.

Abstract: A system including a drone having a projector to project an image from a projection origin. The drone also has a navigation unit to determine location information for the drone. A processor coupled to the drone includes a memory. Execution of programming by the processor configures the system to obtain a projection surface architecture for a projection surface. The projection surface architecture includes reference points that correspond to physical locations on the projection surface. Each reference point is associated with relationship data with respect to an architecture origin. The system also receives location information for the drone, adapts the relationship data responsive to change in the location information, adjusts the image using the adapted relationship data, and projects the adjusted image onto the projection surface.

Abstract: A device for projecting a test pattern for evaluating the image-capturing properties of a lens module includes a light emitting assembly. The light emitting assembly includes a light emitter and a patterning plate on the light emitter. The patterning plate includes a first surface facing the light emitter and a second surface opposite to the first surface. The second surface is concave and defines a patterning groove. The light from the light emitter passes through the patterning groove to form an original pattern for testing, the display of a test pattern being instantly selectable and displayable.

Abstract: An example optical system for a 3D stereoscopic image display comprises a changing mirror, a rotating mirror, a tilted mirror, a concave mirror and a planar mirror. The changing mirror can change the path of light from a horizontal direction to a vertical direction. The rotating mirror can rotate while having an X-axis and a Y-axis with different curvature radii. The tilted mirror can include a central region with a hole for allowing light to pass therethrough, and a peripheral region having one surface having a concave tilted structure while the other surface has a planar structure. The concave mirror can include a central region with a hole having a size capable of encompassing the tilted mirror and a peripheral region having a bent structure that is completely concave. The planar mirror can include a central region with a hole and a peripheral region with a flat doughnut structure.

Abstract: An optical element having an area in which a transmittance changes in a first direction, the optical element includes a substrate and a first layer in a second direction orthogonal to the first direction. A thickness of the first layer in the second direction changes in the first direction, and the extinction coefficient of the first layer changes in the first direction. A predetermined conditional expression is satisfied.

Abstract: The invention relates to a laser projector for presenting an image on a waveguide plane. The projector comprises a laser source (10, 10A, 10B, 10C) capable of emitting a polychromatic light beam (11) or a plurality of narrow-wavelength light beams (11A, 11B, 11C), and a guidance element (12A, 12B) for directing light emitted by the light source to different pupils (16A, 16B, 16C) of the waveguide plane, the different pupils being displaced with respect to each other in the waveguide plane. The invention also concerns a personal display device comprising such projector.

Abstract: Disclosed are a light source system and a control method thereof, as well as a display device and a control method thereof. The light source system includes: an array light source, including M light emitting bodies with independently adjustable brightness; an optical switch disposed on an optical path of light outputted from the array light source, for guiding illumination light emitted by the M light emitting bodies to N sub-regions of a preset illumination region; and a control device for controlling the optical switch to adjust, at a preset frame rate, a direction of the illumination light emitted from each of at least part of the M light emitting bodies, and guiding the illumination light emitted from each of the at least part of the light emitting bodies to a sub-region different from that for one or more image frames previous to the current image frame.

Abstract: An object of the present invention is to provide a projection apparatus capable of appropriately performing control relating to rotation of the projection lens. A projection apparatus according to a first aspect of the present invention includes a housing; a power supply; and a projection lens attached to the housing, the projection lens having a holder and a locking mechanism unit that brings rotation of the holder into a locked state or an unlocked state. Rotation of the holder is in the locked state when the power supply has been turned on. With the first aspect, since the power is turned on in a state in which the projection lens is not rotatable, the locked state can be safely unlocked by user's intention and the holder can be rotated.

Abstract: An optical display device includes a plurality of emitters configured to emit electromagnetic radiation in a main emission direction and at least one optical modulation unit which has an adjustable focal length. The emitters are arranged in a main plane and are separately controllable from one another. The optical modulation unit is arranged downstream of the emitters in the main emission direction. Images of the emitters are generated by means of the optical modulation unit, the images of the emitters each having a distance from the main plane which can be predetermined by means of the adjustable focal length. Methods of operating an optical display device are also disclosed.

Abstract: A vehicle light module, a headlight assembly, and a method for communicating information at a panel having transparent and opaque states; a projector device projects visual representations toward the panel where visual representations are displayed on the panel when in an opaque state and through the panel when in a transparent state.

Abstract: A casing of a projector has a leg part provided at a first surface, and a recessed part located at the first surface. The leg part has a shaft part provided pivotally in relation to the casing, and a cover part fixed to the shaft part and pivoting with the shaft part. The shaft part protrudes from or is inserted in the casing according to the pivoting of the shaft part. The cover part has a sidewall part covering a part of the shaft part. The recessed part accommodates at least a part of the sidewall part.

Abstract: A light source apparatus includes a first solid light source, a second solid light source configured to emit light with a wavelength different from that from the first solid light source, and a controller configured to control turning on of the first and second solid light sources. The controller turns on the second solid light source while maintaining turning on the first solid light source after turning on the first solid light source.