3 results about "Eyepiece" patented technology

The invention discloses a head-mounted multifunctional binocular training lens. The head-mounted multifunctional binocular training lens comprises a bridle. The front end of the bridle is connected with a bridle fixing plate. The front end of the bridle fixing plate is provided with a fixing pile. The front end of the fixing pile is connected with a longitudinal positioning connecting rod throughan adjusting and fixing nut. The bottom of the longitudinal positioning connecting rod is connected with a lens cone cross connecting rod through a horizontal connecting plate. The middle position ofthe lens cone cross connecting rod is provided with a pupil distance adjusting knob. Two ends of the lens cone cross connecting rod are moveably connected with a vertical connecting plate through gears. The bottom end of the vertical connecting plate is fixedly connected with a lens cone fixing frame. The lens cone fixing frame is sheathed with a lens cone. The lens cone is internally provided with an eye lens and an objective lens capable of adjusting the distance. Through adjusting the distance between the eye lens and the objective lens, the different optical precisions are generated, and the effect that near vision is like distant vision is achieved. Through an out-of-focus lens, the myopic defocus is formed at the surrounding area of a retina, so the increase of a visual axis is delayed, and purposes that intraocular ciliary muscles are trained, the ciliary muscles are relaxed and the increase of the myopia strength is effectively controlled are achieved.

The invention discloses a compact optical structure for light field display. The compact optical structure comprises an imaging assembly comprising: a polarizing beam splitter that completely reflectsan incident beam in an S-state polarizing state and completely transmits an incident beam in a P-state polarizing state, a display screen composed of M sub-screens, and enabling light information emitted by all the sub-screens to enter the polarizing beam splitter respectively, two wave plates used for changing the polarization state of the incident light beam, and two reflection modulation devices used for carrying out phase modulation on the light. The compact optical structure further comprises a small-spacing aperture array, a control unit and a diaphragm. According to the compact opticalstructure for light field display, a compact optical structure capable of realizing monocular multi-view presentation is designed by virtue of the regulation and control of the polarization spectroscope and the wave plate on the polarization state, so that the three-dimensional visual comfort is improved by virtue of three-dimensional display capable of being naturally focused. The compact optical structure can be used as an eyepiece of a head-mounted VR/AR alone.