Abstract: A system and method for the projection of virtual 3-D images onto a surface with perspective shifting viewing capability including: a source of data for at least two different paired left-right view sets of one subject, an image reflecting surface, and a projector capable of simultaneously projecting pairs of left-right view sets, and capable of changing projected left-right view sets of images from a first set to a second set to create a stereopsis effect in which content of a complete projected image appears to move in perspective.

Abstract: A parameter adjusting method is applied to a projector having an ambient light sensor, a database and a digital micromirror device. The parameter adjusting method includes analyzing a detection signal generated by the ambient light sensor to acquire an environmental light datum, comparing the environmental light datum with a lookup table of the database to compute at least one compensation parameter, and adjusting an amount of reflection light generated by the digital micromirror device in accordance with the at least one compensation parameter for controlling the projector to output a calibrated projection image in response to compensation of the environmental light datum.

Abstract: The present disclosure relates to the technical field of digital projection display, and discloses a projection method and a projection apparatus. The method includes: acquiring a target object image; identifying attribute information of a target object based on the target object image; acquiring preset projection content based on the attribute information of the target object; acquiring a projection path; and projecting a projection screen based on the preset projection content and controlling the projection screen to move along the projection path. In this way, the projection is more flexible and more pertinent.

Abstract: An angular image of a scene may be displayed using a light field display. The light field display may comprise a plurality of projection units. Each of the projections units may comprise an imaging system and an optical system. The imaging system may illuminate pixels of a planar image of the scene. Light corresponding to each of the pixels may be directed towards the optical system. The optical system may comprise first and second lenses for redirecting each light beam corresponding to a pixel in different directions. In some embodiments the first and second lenses form a globe lens. A diffusion system may conceal the optical systems. Additionally, or alternatively, the diffusion system may produce a uniform distribution of light at a plurality of different viewing angles.

Abstract: A projection system includes a first and second optical system including an optical element. The optical element has a first transmissive surface, a reflection surface, and a second transmissive surface. The second transmissive surface has a convex shape an aspheric shape. An effective light ray range of the second transmissive surface has a first end close to an optical axis of the reflection surface in a first axis direction along a first axis perpendicular to the optical axis and a second end far from the optical axis. A first radius of curvature at the first end is greater than a second radius of curvature at the second end, and a first center of curvature of the first radius of curvature is farther than a second center of curvature of the second radius of curvature from the first end.

Abstract: An imaging apparatus for smartglasses includes an image generator element arrangement having a number of image generator elements, on which a corresponding number of original partial images is represented, a number of imaging channels comprising in each case at least one image-forming reflection surface and/or at least one image-forming refraction surface, said number corresponding to the number of image generator elements, wherein each of the imaging channels is associated with one of the image generator elements and transmits one of the original partial images, and a spectacle lens, which is common to all imaging channels and via which the imaging channels are directed in the direction of an observer's eye. The image-forming reflection surfaces and/or refraction surfaces of the imaging channels are surfaces of a prism that is arranged on the spectacle lens.

Abstract: Provided is a laser device, comprising a laser light source, a collimating lens that collimates the light output from the laser light source, and a diffuser plate that diffuses the light from the laser light source before collimating the light.

Abstract: An optical system and a projection device are provided. The optical system includes a display unit, a first lens group, a second lens group, and a reflector in sequence along a transmission direction of light; both the first lens group and the second lens group have positive focal powers; the optical system satisfies the following relationship: 0.01?|?100|?0.02 and 0.005?|?200|?0.015; ?100 represents a focal power of the first lens group, and ?200 represents a focal power of the second lens group.

Abstract: A system is provided. The system includes a translucent display positioned such that a first face is a display face and that a second face is a projection face and at least one projector configured to project an image on the second face of the translucent display. The image is displayed on the first face. The system also includes at least one sensor configured to transmit a signal when triggered and a projector controller in communication with the at least one projector and the at least one sensor. The projector controller is programmed to receive a signal from the at least one sensor and instruct the at least one projector to project at least one image on the translucent display in response to the signal from the at least one sensor.

Abstract: The disclosure relates to an optical security feature that is based on a single axis alignment of mirrors or facets in a structured surface that forms a micro mirror array. In an aspect, a device is described that includes a reflecting structure on a first layer, where the reflecting structure has a top surface with multiple embossed facets arranged in a spatial orientation that produces a flat ring optical effect upon incidence of light. In another aspect, a method for making the device is described that provides a reflecting layer and produces the reflecting structure on the reflecting layer with multiple facets arranged in the spatial orientation to produce the flat ring optical effect. In yet another aspect, an apparatus for making the device is described that includes a pressing device and a stamping device to transfer a pattern of the reflecting structure to a reflecting material.

Abstract: 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.

Abstract: A projector focusing method includes acquiring a plane angle of a light beam and acquiring a first distance and a second distance between two sides of a light beam edge displayed on a projection plane and a time of flight device after the time of flight device emits the light beam to the projection plane, acquiring a plane equation of the projection plane according to the first distance and the second distance, acquiring an optical axis vector of a digital micro-mirror device (DMD) disposed inside the projector, designating target coordinates of the DMD, converting the target coordinates to the projection target coordinates on the projection plane according to the plane equation, acquiring an customized emitting vector according to the projection target coordinates and a lens position of the projector, and acquiring an ideal focal distances of the projector according to the customized emitting vector and the optical axis vector.

Abstract: A virtual image display apparatus includes an image light generation device, a projection optical system configured to project image light emitted from the image light generation device, a folding mirror configured to reflect the image light from the projection optical system in an intersection direction, a semi-transmissive mirror configured to reflect a part of the image light from the folding mirror, and a concave mirror configured to reflect the image light from the semi-transmissive mirror forming an exit pupil, in which the folding mirror is disposed between the semi-transmissive mirror and the concave mirror when viewed in a first direction, provided that the first direction is a direction from an intersection point between a projection optical axis that is an optical axis of the projection optical system and the folding mirror toward an emission optical axis that is an optical axis from the concave mirror toward the exit pupil.

Abstract: A method includes receiving a light beam propagating along an optical path, converting, using a first diffractive element, a first portion of the light beam into a first circularly polarized beam, and a second portion of the light beam into a second circularly polarized beam. The method also includes converting, using a second diffractive element, the first circularly polarized beam into a first circularly polarized output beam, and the second circularly polarized beam into a second circularly polarized output beam.

Abstract: A projecting apparatus is provided, and includes a frame, a light source module, and a microelectromechanical systems (MEMS) module. The frame includes two lateral boards respectively arranged on two opposite sides thereof, and a transverse beam that connects the two lateral boards. Each of the two lateral boards has a guiding slot recessed in a portion thereof. The MEMS module is configured to transmit light emitted from the light source module, and includes a flexible circuit board, a first MEMS unit, and a second MEMS unit, the latter two of which are connected to the flexible circuit board. The first MEMS unit is inserted into the guiding slots of the two lateral boards. The second MEMS unit abuts against the two lateral boards and/or the transverse beam. The first MEMS unit and the second MEMS unit have a predetermined angle there-between by the second frame portion.

Abstract: The present invention relates to a head up display system, in particular for a motor vehicle, comprising: a picture generating unit having a picture projection optics, a tilted mirror and an intermediate image plane, wherein light from the picture projection optics is deflected by the mirror toward the backside of the intermediate image plane, and an optical lens and/or mirror arrangement for magnifying and/or conveying a picture generated on the intermediate image plane to an optical combiner, wherein a pair of prisms is inserted in the optical path between the tilted mirror and the intermediate image plane to eliminate or mitigate specific light beams emanating from the intermediate image plane and traveling toward the tilted mirror and/or specific light beams emanating from the intermediate image plane already being reflected from the tilted mirror and traveling back toward the intermediate image plane.

Abstract: The invention is a small, low-power consuming, projector system. Once programmed and provided with image data, it can be a standalone system for presenting varying length, silent, videos. Its programmability and FPGA-based micro-circuitry allows it to be repurposed with minimal effort to support other embedded-light-system applications.

Abstract: An object of the present invention is to provide a projection apparatus capable of appropriately performing control relating to a rotation state and/or a movement state of a projection lens. A projection apparatus according to an aspect of the present invention includes a housing; a light source; a control unit; and a projection lens attached to the housing, the projection lens having a holder, a detection unit that detects a rotation state of the holder, an emission optical system, and a locking mechanism unit that brings rotation of the holder into a locked state or an unlocked state. The projection lens is displaceable between a first position at which a rotation state of the holder is a housed state in which the emission optical system faces the housing and a second position at which the emission optical system does not face the housing by rotating the holder. The second position includes an upper position at which the emission optical system faces an upper side in a vertical direction.

Abstract: A projector includes a light projector and a position adjuster. The light projector includes a holder holding a plurality of lenses and a movable frame element provided to be pivotable around the optical axis of the plurality of lenses and that pivots to move a target lens out of the plurality of lenses along the optical axis. The position adjuster includes an arm member connected to the movable frame element that pivots along with the movable frame element, an operation member provided to be pivotable around a pivotal axis substantially parallel to the optical axis and pivots when an end portion of the operation member opposite the arm member is moved, and a linkage mechanism that links the arm member to the operation member and causes the arm member to pivot in response to the pivotal motion of the operation member.

Abstract: An image display apparatus (100) according to the present invention includes a display unit and a projection unit. The display unit includes a curved first screen (43) and a curved second screen (44), the first screen extending along a predetermined axis (1), the curved screen having transparency and being disposed on a front side of the first screen (43) with a gap interposed therebetween. The projection unit includes an emitter (11) that emits light for displaying a first image from a region on the predetermined axis (1) and a second image superimposed on the first image, projects the first image onto the first screen (43), and projects the second image onto the second screen (44).