A stereoscopic vision system uses at least two cameras having different parameters to image a scene and create stereoscopic views. The different parameters of the two cameras can be intrinsic or extrinsic, including, for example, the distortion profile of the lens in the cameras, the field of view of the lens, the orientation of the cameras, the positions of the cameras, the color spectrum of the cameras, the frame rate of the cameras, the exposure time of the cameras, the gain of the cameras, the aperture size of the lenses, or the like. An image processing apparatus is then used to process the images from the at least two different cameras to provide optimal stereoscopic vision to a display.

A stereoscopic vision system uses at least two cameras having different parameters to image a scene and create stereoscopic views. The different parameters of the two cameras can be intrinsic or extrinsic, including, for example, the distortion profile of the lens in the cameras, the field of view of the lens, the orientation of the cameras, the positions of the cameras, the color spectrum of the cameras, the frame rate of the cameras, the exposure time of the cameras, the gain of the cameras, the aperture size of the lenses, or the like. An image processing apparatus is then used to process the images from the at least two different cameras to provide optimal stereoscopic vision to a display.

The invention provides an optical lens including a first lens, a second lens, a third lens, a fourth lens, and a fifth lens with refracting power in order from a light incidence side to a light-emitting side along an optical axis, and at least one glass lens is included. The first lens has a positive refracting power, the second lens has a positive refracting power, and the third lens has a negative refracting power. The optical lens satisfies a condition of 0.5EFL<EFL.sub.G<2EFL, where EFL is an effective focal length of the optical lens, and EFL.sub.G is an effective focal length of the at least one glass lens. The optical lens is adapted for receiving an image beam from the light incidence side, and the image beam forms a stop on the light-emitting side after passing through the optical lens. A display device is also proposed.

The invention provides an optical lens including a first lens, a second lens, a third lens, a fourth lens, and a fifth lens with refracting power in order from a light incidence side to a light-emitting side along an optical axis, and at least one glass lens is included. The first lens has a positive refracting power, the second lens has a positive refracting power, and the third lens has a negative refracting power. The optical lens satisfies a condition of 0.5EFL<EFL.sub.G<2EFL, where EFL is an effective focal length of the optical lens, and EFL.sub.G is an effective focal length of the at least one glass lens. The optical lens is adapted for receiving an image beam from the light incidence side, and the image beam forms a stop on the light-emitting side after passing through the optical lens. A display device is also proposed.

A class system for taking a class conducted in an immersive virtual space by connecting a communication class server and a student terminal. The communication class server includes a delivery unit that delivers, to the student terminal, a class content for viewing a class being conducted in the virtual space, and a transmission unit that transmits, to the student terminal, a display signal, a non-display signal, an operation permission signal, and an operation prohibition signal respectively set according to the progress of the class. The student terminal includes a VR function unit that disposes, in the virtual space, an avatar of a student that uses the student terminal and controls the avatar, receives the class content, and displays the class content from the avatar's point of view.

A system for displaying a mobile device screen comprises a head mounted display for displaying a first content to a user, a video camera mounted on the head mounted display, the video camera operable to capture a video image of a scene in front of the user, a region detection processor operable to detect a region of the captured video image comprising a mobile device screen, and an image processor operable to replace a corresponding region of the displayed first content in the head mounted display with the detected region of the captured video image comprising the mobile device screen.

An electronic display assembly includes a display element and a corrective element coupled to the display element. The display element has a first plurality of sub-pixels of a first type and a second plurality of sub-pixels of a second type. Two adjacent sub-pixels of the first plurality of sub-pixel are separated by a sub-pixel distance. The corrective element has a plurality of features configured to diffuse light emitted by the first plurality of sub-pixels such that an apparent distance between the two adjacent sub-pixels of the first type, viewed at a viewing distance away from the electronic display assembly, is less than the sub-pixel distance.

An electronic display assembly includes a display element and a corrective element coupled to the display element. The display element has a first plurality of sub-pixels of a first type and a second plurality of sub-pixels of a second type. Two adjacent sub-pixels of the first plurality of sub-pixel are separated by a sub-pixel distance. The corrective element has a plurality of features configured to diffuse light emitted by the first plurality of sub-pixels such that an apparent distance between the two adjacent sub-pixels of the first type, viewed at a viewing distance away from the electronic display assembly, is less than the sub-pixel distance.

A medical/surgical microscope with two cameras configured to capture two dimensional images of specimens being observed. The medical/surgical microscope is secured to a control apparatus configured to adjust toe-in of the two cameras to insure the convergence of the images. The medical/surgical microscope includes a computer system with a non-transitory memory apparatus for storing computer program code configured for digitally rendering real-world medical/surgical images. The medical/surgical microscope has an illumination system with controls for focusing and regulating the lighting of a specimen. The medical/surgical microscope is configured for real-time video display with the function of recording and broadcasting simultaneously during surgery.

The present application discloses method for generating a panorama image based on a rendering engine associated with a display apparatus. The method includes determining a display model configured to be a polygon prism for a rendering engine corresponding to a panorama view of a scene. Additionally, the method includes using multiple sampling cameras associated with the rendering engine to capture multiple sample sub-images of the panorama view in respective directions towards multiple sub-planes of the polygon prism. The method further includes attaching the multiple sample sub-images to respective multiple sub-planes to form a constructed display model. Furthermore, the method includes rendering the constructed display model by the rendering engine to reconstruct a panorama image and displaying the panorama image on the display apparatus.