Abstract: A projection lens is separated by a second mirror into a first optical system that is disposed so as to be closer to an image forming panel and a second optical system that includes the second mirror and is disposed so as to be closer to a screen which is a projection surface. The second optical system is held rotatably around a second optical axis with respect to the first optical system by a first rotation mechanism. A rotation angle of the second optical system with respect to the first optical system is detected by a first sensor. A tilt angle of the projected image on the projection surface by the rotation angle is obtained by a tilt correction section, and the display position of the image to be displayed on the image forming panel is corrected according to the tilt angle.

Abstract: In order to provide an imaging apparatus in which unnecessary rotation of an image caused by rotation of a movable unit is able to simply be corrected, the imaging apparatus has the following configuration: an imaging unit configured to acquire an image; a movable unit configured to change a direction of the imaging unit through rotation thereof around a predetermined axis; and at least one processor or circuit configured to function as a correction processing unit at least one processor or circuit configured to function as a correction processing unit configured to perform correction processing of correcting rotation of the image caused by rotation of the movable unit on the basis on the information on a relationship between a rotation angle around the axis and a rotation angle of an image acquired by the imaging unit.

Abstract: A projection device includes a drive housing that includes a protruding portion protruding from a central portion, a projection lens that includes a first rotation mechanism, and fans that draw in or discharge gas; the central portion includes a first A side surface that is provided in a first A direction X1 corresponding to one side in a first direction X and a second A side surface that is provided in a first B direction X2 corresponding to the other side in the first direction X; the protruding portion includes a first B side surface in the first A direction X1 and includes a second B side surface, which faces the projection lens, in the first B direction; and the fans face the second A side surface and the second B side surface.

Abstract: A first holding member holds a first optical system and a first mirror, and has a first junction surface. A second holding member holds a second optical system and a second mirror, and has a second junction surface. A junction portion is configured such that, in a state where the first junction surface and the second junction surface are aligned with each other, the second holding member is capable of being shifted in a direction of both the junction surfaces and rotated around an optical axis, and makes it possible to perform optical axis alignment. An emission-side optical axis of the first optical system and an incidence-side optical axis of the second optical system are aligned with each other, and thus a U-shaped optical path is formed by the first and second optical systems.

Abstract: An autonomous travelling vehicle provided with an elevation apparatus on a chassis includes Wi-Fi antennas and cellular antennas that are columnar antennas and that are stood adjacent to an area for elevational motions of an elevation mechanism of the elevation apparatus.

Abstract: A head-mounted display in accordance with an embodiment of the present technology includes a display housing and one or more displays within the display housing. The display system further includes a first lens and a second lens, each being operably associated with the one or more displays. A lateral distance between the first and second lenses is adjustable to accommodate users having different interpupillary distances. The display system still further includes a flexible membrane having a region extending between the first and second lenses. The region of the membrane extending between the first and second lenses is configured to resiliently expand as the lateral distance between the first and second lenses increases and to resiliently contract as the lateral distance between the first and second lenses decreases.

Abstract: A holographic Bragg grating is used as an output element for a waveguide in a lens used for artificial reality. By using a Bragg grating, a number of waveguides can be reduced. The output element has a first super grating and a second super grating written in a single grating layer of the waveguide. The first super grating has a grating vector that is skew to a grating vector of the second super grating to provide both deflection and out coupling for two-dimensional output coupling.

Abstract: A display can be utilized with an image source. The display includes a collimator and a substrate waveguide. The substrate waveguide sees collimated light from the collimator at an input and provides the collimated light to an output. The collimated light travels from the input to the output within the substrate by total internal reflection. An input diffraction grating is disposed in a first area at the input and an output diffraction grating is disposed in a second area at the output. The second diffraction grating is matched to the first diffraction grating. A combiner alignment detector is not required due to the periscopic effect according to one embodiment.

Abstract: A mirror structure permitting an undistorted view of the blind spots of a vehicle include a first lens module and a second lens module. The first lens module is mounted on an A-pillar of a vehicle and located outside of the vehicle; the second lens module is opposite the first lens module and mounted inside of the vehicle on the A-pillar. The first lens module focuses light beams which would otherwise be blocked by the A-pillar of the vehicle and transmits the light beams to a front windshield of the vehicle, the light beam passing through the front windshield to reach the second lens module, the second lens module diffusing the light beams into the vision of a driver.

Abstract: A periscope includes a prism block with upper and lower deflection mirrors, in a housing with a vision unit and a reflector unit. A display unit is disposed opposite the vision unit, above the lower deflection mirror on a section of the rear side that is parallel to the front side. A reflector unit image can be seen exclusively on a lower region and a display image can be seen exclusively on an upper region of the vision unit. The upper region corresponds to at least half the height of the vision unit. An air gap is present between the display unit and the prism block, and a heating film or an ITO coating (indium-tin oxide) for heating the optical surface and/or an anti-frosting nano coating is applied to the surface of the prism block opposite the display unit and/or to the display unit.

Abstract: A lifting apparatus for devices used for detection, observation, air intake or communication on a submarine comprises a first movable mounting unit and a second movable mounting unit equipped at the top of them with at least one detection or communication device and at least one actuator associated with the first movable mounting unit and/or with the second movable mounting unit to move them along a main direction of movement. The apparatus further comprises a supporting member extending along the main direction and interposed between the first movable mounting unit and the second movable mounting unit and also having a pair of guides, each extending along the main direction and slidably coupled to a respective movable mounting unit to guide its movement along the selfsame main direction.

Abstract: A periscope that provides a wide-angle viewing field while having a compact physical size is provided. The periscope has at least two objective lenses with their optical axes at an angle to each other so that the objective lenses image different solid angle regions.

Abstract: A transmission optic having a transparent sheet with opposing front and back faces and an end face adjacent the front and back faces. The separation between the back face and a nearest point on the front face varies as a conic function of distance along the front face from that point to the end face.

Abstract: A system for basement window wells that enables internal occupants a view of the surrounding outdoor landscape is herein described, comprising a periscope-type mechanism comprising a pair of mirrors which mount within a window well area. An upper portion of the system comprises a mirror which reflects light and scenery downward. A bottom portion of the system comprises a second minor which projects said light and scenery through a below-grade window portion of a building. A protective transparent plastic cover maintains a watertight construction.

Abstract: A periscope comprises an object window (4), a first reflector (5), a second reflector (6), a viewing window (7) and a display port for an electronic display (8). The first reflector (5) is arranged to reflect light from the object window (4) towards the second reflector (6). The second reflector (6) is selectively movable between a first position of use in which the second reflector (6) reflects light from the first reflector (5) towards the viewing window (7) and a second position of use in which the second reflector (6) reflects light from the display port towards the viewing window (7). The periscope provides a simple design that allows the user's view to be switched between an electronically generated image, such as night vision, and a purely optical image.

Abstract: A worn display, such as a head worn display, includes a projector and a periscopic system configured to be wearable. The periscopic system includes at least one diffraction grating member. The member includes an input end for receiving an image from a projector and a combiner end for receiving light from a scene and providing the image received at the input end and the light received from the outside scene to the user. The head worn display can be used in aircraft applications to provide guidance information to a pilot.

Abstract: A transmission optic having a transparent sheet with opposing front and back faces and an end face adjacent the front and back faces. The separation between the back face and a nearest point on the front face varies as a conic function of distance along the front face from that point to the end face.

Abstract: A periscope that is switchable between the normal optical view of the outside, a display view, and an overlay view in which the outside view and display view are combined. The switching element is an electronically switchable mirror with primarily reflective, primarily transparent, and intermediate states, depending on the application of electrical potentials.

Abstract: A collimated periscope that is switchable between a normal optical view of the outside, a display view, and an overlay view in which the outside view and display view are combined. The switching element is an electronically switchable mirror with primarily reflective, primarily transparent, and intermediate states, depending on the application of electrical potentials.

Abstract: A periscope that is switchable between the normal optical view of the outside, a display view, and an overlay view in which the outside view and display view are combined. The switching element is an electronically switchable mirror with primarily reflective, primarily transparent, and intermediate states, depending on the application of electrical potentials.

Abstract: The invention relates to a periscope device for transmission of a surrounding represented by first light borne information (L1) to the view opening (106), wherein the first light borne information (L1) at the view opening is arranged to be presented together with visual supplementary information represented by second light borne information (L2), wherein the visual supplementary information (L2) is arranged to be provided by means of a projector (P). The invention also relates to a vessel.

Abstract: The camera or periscope system may include a taking lens, a beam steering device, a relay device, and an image rotation device. The camera or periscope system can be used to image in situations where the camera is not easily redirected to view a desired object of interest. The camera or periscope system is designed to be fixed to a mounting platform where the taking lens can be configured to point to the desired object of interest.

Abstract: A viewing device (10) includes a body enclosing a first reflective surface or mirror (40), second reflective surface or mirror (42) and a mechanism for securing the body to a conventional sighting device or telescope (82) on a firearm. First mirror (40) is adapted to direct an incoming light beam (44) onto second mirror (42) so that an outgoing light beam (70) is angled relative to the incoming light beam (44). In use, viewing device (10) can be releasably attached to rear end (80) of telescope (82) and allows a user (90) to remain partially hidden behind obstacle (92) whilst viewing through sighting device (82) and using the firearm. The angular offset of respective light beams (44, 70) is between 35° and 60°.

Abstract: An adapter is provided for adapting an optical instrument, such as a camera (3) or a projector, to capture or display panoramic three-dimensional images. The adapter comprises a plurality of mirrors (1a, 1b, 1c), each of which has a reflective surface which is in the shape of a curved non-circular conic section rotated about an axis of symmetry (15a, 15b, 15c). The reflective surfaces have first foci which are spaced perpendicularly from a longitudinal axis of the adapter and which are angularly spaced around the longitudinal axis. For example, the conic section may be a hyperbola with first foci equidistantly spaced from the longitudinal axis and equiangularly spaced around 15b the longitudinal axis. The axes of symmetry (15a, 15b, 15c) of the mirrors (1a, 1b, 1c) converge to intersect the longitudinal axis at a point which is coincident with the front principal point of, for example, a camera lens (12).

Abstract: A direct vision periscope is disclosed having a second set of mirrors strategically positioned within a wide angle trapezoidal periscope. The main optical path has a vertical field of view of 24° above and below horizontal while the secondary optical path provides a field of view of 12° to 59° above horizontal to allow the occupants to see elevated areas. When used on military vehicles, multiple periscopes may be disposed about the operator's compartment to create a near panoramic view.

Abstract: A reflector assembly for use with an electronic device includes a light guiding member forming a light-guiding passage having a light guide assembly in the form of a plurality of lens assembled therein, the light guiding member is assembled in an electronic device having a display window formed in the front surface and a camera module formed in the back surface. An end of the light guiding member aligns with the camera module, the other end of the light guiding member extends to the front surface of the electronic device, outside lights can enter into light-guiding passage and be reflected by the lenses and reach to the camera module.

Abstract: A periscope that is switchable between the normal optical view of the outside, a display view, and an overlay view in which the outside view and display view are combined. The switching element is an electronically switchable mirror with primarily reflective, primarily transparent, and intermediate states, depending on the application of electrical potentials.

Abstract: An imaging apparatus which can be reduced in size and secure a sufficient tilt angle. In the imaging apparatus, light is incident along a first optical axis on a first prism that is rotated by a tilting mechanism about a second optical axis, and is bent by the first prism in a direction of the second optical axis. Then, the light is incident along the second optical axis on a second prism disposed coaxially with the second optical axis, is bent by the second prism in a direction of a third optical axis, and passes through a photographic lens system disposed coaxially with the third optical axis. The light is received by an image pickup element from which an image signal is output.

Abstract: A direct vision periscope is disclosed having a second set of mirrors strategically positioned within a wide angle trapezoidal periscope. The main optical path has a vertical field of view of 24° above and below horizontal while the secondary optical path provides a field of view of 12 to 59° above horizontal to allow the occupants to see elevated areas. When used on military vehicles, multiple periscopes may be disposed about the operator's compartment to create a near panoramic view.

Abstract: An apparatus to enable an automobile driver to see above oversized vehicles and other obstacles with a periscope that attaches to the roof and windshield (or side window) of a motor vehicle, a sleeve mechanism that permits extension and rotation of the device, placement at the top of the windshield (or side window) that permits easy viewing, a powerful magnet and roof latch that secures the scope to the vehicle, and an optional zoom function that permits enlargement of a sighted object.: A preferred embodiment includes sturdy, weather-proof construction, availability in many colors, pre-assembly, and easy attachment.

Abstract: Described is a toy weapon with a periscope suitable for allowing a user to view obstructed objects through the periscope. The toy weapon comprises a weapon-shaped body with a trigger attached with the body. A user may activate the trigger with a finger to shoot the toy weapon. The periscope is attached with the body. The periscope includes an eye piece and a viewing piece, formed to allow a user to point the viewing piece at an object and view the object through the eye piece. In a desired aspect, the toy weapon is a water gun. In this aspect, a pressurized tank is attached with the trigger and the body. A pressure pump is connected with the pressurized tank to allow a user to build up water pressure within the tank. Depressing the trigger causes water stored within the tank to be expelled from the tank toward an object.

Abstract: A submarine floating periscope comprising: (a) a floating base; (b) a scanning unit for scanning and acquiring images, and; (c) cables between the submarine and the periscope for maintaining the periscope in the vicinity of the submarine, and for enabling communication between the periscope and the submarine. The scanning unit comprises: (i) a transparent dome; (b) a two-degrees of freedom gimbals system in a hollow portion below the dome. The gimbals system includes a mechanism for changing the orientation of a plate within the hollow portion by applying rotation about two perpendicular axes; (c) a light sensing element, for sensing light coming from outside the dome thereby forming images, the sensing unit being positioned on said plate, preferably in its center; and (d) a modem for transferring images data and other data between the periscope and the submarine.

Abstract: A viewing device includes a housing defining an interior chamber through which light can pass. The housing includes first and second spaced apart openings communicating with the interior chamber such that light entering the first opening is viewed by a user looking into the second opening. The second opening is further configured to receive sound created by the user and the housing is configured to transmit the sound entering the second opening toward a sound exit location of the housing at or near the first opening. The second opening can define an eyepiece portion into which the user looks and a mouthpiece portion into which a user speaks. The viewing device can take the form of a periscope toy.

Abstract: A periscopic beam director is disclosed. The periscopic beam director can be configured with a hemispheric field of regard, in a volume that minimizes external structure or dome size when mounted on a host vehicle (e.g., airplane or UAV). One embodiment combines a Risley Prism refractive beam steering arrangement with an angled azimuthal mount. By using refraction in combination with reflection for changing the beam direction within an optical unit, a substantially more compact periscopic beam director can be realized.

Abstract: A periscope is mounted through the roof and into a room within a building, such as a house or the like, whereby people in the building can view scenes outside without leaving the building. The periscope extends from a room in the building, such as a living room of a house, upwardly through any overhead ceilings and floors and through the roof. Further, the periscope extends above the topmost roofline for increased distance viewing or viewing over obstacles. Using an eyepiece at the bottom of the periscope, a user can then see outside areas, including distant areas, while remaining in the comfort of his or her house. The building can be any permanent dwelling structure, such as a house, apartment, single story building, multistory building, condominium, cottage, cabin, beach house or the like, in a residential or commercial setting.

Abstract: An optical observation device is connected to an extendable and retractable snorkel tube for above-water observation during the snorkel travel (travel at periscope depth) of the submarine. The optical observation device is designed as a compact unit which consists of an optronics unit with a short-travel drive. The compact unit is assembled on the snorkel tube. At least one further compact unit is provided which comprises at least one communication arrangement with a short-travel drive, wherein this further compact unit is likewise provided on the snorkel tube.

Abstract: The present invention provides a flip-flop diagonal with variable viewing angles. It comprises a housing body, an eyepiece adapter unit and a reflective mirror unit. The housing body has a cylindrical sleeve for mounting the diagonal to a telescope. The eyepiece adapter unit includes an eyepiece adapter and an eyepiece support frame, the eyepiece adapter is fixed on the eyepiece support frame, the eyepiece support frame is pivotably mounted on the housing body. The reflective mirror unit includes a reflective mirror, a mirror support bracket and rotary shafts, the reflective mirror is mounted in the mirror support bracket, and the mirror support bracket is pivotally mounted on the eyepiece support frame through the rotary shafts. With the flip-flop diagonal according to the present invention, when observing the sky through the refracting astronomical telescope, wherever the target is, the eyepiece can be located in different positions only by changing the angles of the eyepiece adapter.

Abstract: There is provided an optical device for transferring light within a given field-of-view, comprising an input aperture; reflecting surfaces, and an output aperture located in spaced-apart relationship from the input aperture such that light waves, located within the field-of-view, that enter the optical device through the input aperture, exit the optical device through the output aperture, wherein the reflecting surfaces are at least one pair of parallel reflecting surfaces and that part of the light waves located within the field-of-view that enter the input aperture, pass directly to the output aperture without being reflected off the at least one pair of parallel reflecting surfaces, while another part of the light waves within the field-of-view that enters the input aperture, arrives at the output aperture after being twice reflected by the at least one pair of parallel reflecting surfaces.

Abstract: A camera system has a rotary mirror type camera assembly including a camera, a mirror for camera arranged in front of the camera, and a mirror rotating mechanism driving the mirror for the camera, a rotary mirror type display apparatus including a monitor displaying an image picked up by the camera, a mirror for monitor arranged in front of the monitor, a finder permitting viewing of the image displayed on the monitor via the mirror for monitor, and a casing rotatable together with the mirror for monitor. The mirror for camera is rotated according to rotation of the casing and the mirror for monitor being fixed to the casing. When the casing is rotated, the mirror for monitor is rotated in display direction of the monitor in front of the monitor.

Abstract: A fusion monitor system for vehicles which includes a sideview mirror unit having an object lens and an eye lens at both sides of a housing which is disposed backwardly from inside and outside of the vehicle and a movable reflecting mirror between two lenses to form an afocal optical system, a movable reflecting mirror driving unit for rotating the movable reflecting mirror, a terminal holder for accepting a mobile phone, a display panel for outputting the same information as that of a display window of the mobile phone through the mirror unit. According, air resistance can be reduced, information outputted on the display window of the mobile phone can be enlarged for easy viewing and reading, and it allows hands free for user's convenience.

Abstract: A compact spotting scope includes a housing with an outer surface having a grasping region sized and shaped to fit in the palm of a user's hand so that the spotting scope can be held at eye level with one hand in an ergonomic arm and wrist position for steady support. An optical element positioned within the housing is adjusted by manually rotating a side-mounted adjustment knob that extends laterally from the outer surface of the housing opposite the grasping region. The side-mounted position of the adjustment knob allows the arm and wrist of the focusing hand to be maintained in an ergonomic position during manipulation of the adjustment knob, thereby further facilitating steady support. An internal support member of the spotting scope includes a frame portion and a generally tubular portion, which are preferably formed together of unitary one-piece construction for aligning optical elements of the spotting scope.

Abstract: An optical observation device is connected to an extendable and retractable snorkel tube for above-water observation during the snorkel travel (travel at periscope depth) of the submarine. The optical observation device is designed as a compact unit which consists of an optronics unit with a short-travel drive. The compact unit is assembled on the snorkel tube. At least one further compact unit is provided which comprises at least one communication arrangement with a short-travel drive, wherein this further compact unit is likewise provided on the snorkel tube.

Abstract: A portable periscope (31) comprises a periscope head (58, 60), a periscope barrel (34) and a periscope elbow (64, 66). The periscope barrel is made up of a plurality of segments (36, 38, 40) that can be disassembled for transport and assembled for use. The segments are either separated from each other or are joined by hinges, making a foldable articulated periscope.

Abstract: An optical sight for a combat vehicle, intended to be mounted in a weapon turret of the vehicle in order to make possible sight lines at elevations between roughly −10° and 90° of a weapon barrel mounted pivotably about a horizontal axis in the weapon turret. The sight comprises a lower standard sight unit, which deflects vertical incident light by 90° to an eyepiece, and a top mirror, located above the standard sight unit and pivotable in synchronism with elevating movements of the barrel, likewise about a horizontal axis. Positioned above the standard sight unit is a deflection prism which has an upper surface which faces the top mirror, is inclined at roughly 45° to the vertical and is designed to reflect incident light at an angle of roughly 45° to the surface and less, but to transmit light which is incident at roughly 90° to the surface.

Abstract: A panoramic view of the world surrounding a stationary mast of a submarine is provided by a plurality of small windows disposed circumferentially around the mast and a corresponding plurality of lenses for imaging the fields of view thereof onto coherent fiber optic image bundles. The fields of view of the lenses overlap to provide a complete panoramic view. The exit ends of the image guides are arranged to form a polygonal opening so that a replica of the panoramic view is provided within the opening. A mirror or prism rotating within the opening scans the view replica and directs the scanned image to a stationary television camera. A derotating prism in the path of the directed scanned image rotates at one-half the angular displacement of the image director to compensate for rotation imparted to the scanned image by the image director.

Abstract: An adjusting device for adjusting a projecting direction of a view comprises the following components. A reflector is pivotally installed in a body case. The body case is formed with an incident hole, first viewing hole and a second viewing hole. A reflector is located within the body case and is pivotally installed thereto. An adjusting button is located on the upper cover. A rotary flange is installed on the adjusting button. Thereby, the user rotates the adjusting button so that a rotary arm is adhered on the adjusting button. When a user desires to see an outer view; by a driving the rotary arm, the reflector is driven to rotate to a predetermined angle. On the contrary, when the user desires to see outer view from the first viewing hole; the user only needs to restore the adjusting button to the original position.

Abstract: A viewing instrument that has a collapsed configuration and an expanded configuration. The viewing instrument includes two lenses that are located within a housing when the viewing instrument is in its collapsed configuration and at least a portion of each of the lenses is located outside of the housing when the viewing instrument is in its expanded configuration.

Abstract: An optical device comprises an optical system mount plate, a casing, and a screw-hole forming part. An optical system is mounted on the optical system mount plate. The optical system mount plate is housed in the casing. The screw-hole forming part is provided on a bottom of the casing so as to threadingly fit in a screw provided on a tripod head. The screw-hole forming part and at least one portion of the bottom being engaged with the optical system mount plate so as to counteract a rotational tightening force that is affected on the screw-hole forming part when the screw is threadingly tighten in the screw-hole forming part.

Abstract: An adjusting device for adjusting a projecting direction of a view comprises the following components. A reflector is pivotally installed in a body case. The body case is formed with an incident hole, first viewing hole and a second viewing hole. A reflector is located within the body case and is pivotally installed thereto. An adjusting button is located on the upper cover. A rotary flange is installed on the adjusting button. Thereby, the user rotates the adjusting button so that a rotary arm is adhered on the adjusting button. When a user desires to see an outer view; by a driving the rotary arm, the reflector is driven to rotate to a predetermined angle. On the contrary, when the user desires to see outer view from the first viewing hole; the user only needs to restore the adjusting button to the original position.

Abstract: A derotation mirror system for a common-optical-path panoramic stabilized periscope. The derotation system has a first surface-reflecting mirror, a second surface-reflecting mirror and a third surface-reflecting mirror. Through subsequent reflection of light from the surface of the first surface-reflecting mirror, the second surface-reflecting mirror, the third surface-reflecting mirror and a rotation of the entire derotation mirror system with respect to the Z-axis, the derotation is achieved. Since this invention only requires three reflections, the derotation system allows the lights with various wavebands (such as visible light, infrared light and laser beam). In addition, the derotation system manages to constrain the propagation of the output image vector and the output image vector along the same Z-axis line.