Scanned beam display with adjustable accommodation
July 3, 2021. Estimated Expiration Date is calculated based on simple USPTO term provisions. It does not account for terminal disclaimers, term adjustments, failure to pay maintenance fees, or other factors which might affect the term of a patent.Patent ReferencesLight wave polarization determination using a hybrid system Laser beam scanning apparatus having a variable focal distance device and the variable focal distance device for use in the apparatus Automatic image regulating arrangement for head-mounted image display apparatus Virtual retinal display with fiber optic point source Miniature optical scanner for a two axis scanning system Display with multi-surface eyepiece Virtual retinal display with lens array for expanding exit pupil Three dimensional imaging system Virtual retinal display with scanner array for generating multiple exit pupils Point source scanning apparatus and method InventorsAssigneeApplicationNo. 898413 filed on 07/03/2001US Classes:345/8, Operator body-mounted heads-up display (e.g., helmet mounted display)359/354Including continuously variable magnification or focal length (zoom lens, adjustable lens)ExaminersPrimary: Shalwala, BipinAssistant: Osorio, Ricardo Attorney, Agent or FirmInternational ClassG09G 005/00AbstractA scanning beam display controls the curvature of scanning light wave impinging on the eye to simulate image points of differing depth. To simulate an object at a far distance the generated light waves are flatter. To simulate closer objects, the light wave curvature increases. When changing the curvature of the light waves, the eye responds by altering its focus. The curvature of the light waves thus determines the apparent focal distance from the eye to the virtual object. To vary the curvature, either a variable focus lens or a variable index of refraction device is used. Alternatively, a moving point source is used. The generated apparent distance of a virtual object is correlated to a detected distance in a background field of view. Intensity of the virtual object is correlated to detected intensity of background light.Field of SearchIMAGE SUPERPOSITION BY OPTICAL MEANS (E.G., HEADS-UP DISPLAY)Operator body-mounted heads-up display (e.g., helmet mounted display) Plural image superposition Optical means interposed in viewing path (e.g., filters, lens, etc.) Including reflective type moving element Having oscillating element Single plane mirror element By moving a reflective element Reflective element moved by deformable support Superimposing visual information on observer`s field of view (e.g., head-up arrangement, etc.) Including curved reflector Rotatable heads-up device or combiner With additional reflector (e.g., serial reflections, etc.) Including continuously variable magnification or focal length (zoom lens, adjustable lens) Plural moving scanning elements X-Y scanner Eyepiece | |
