# US 10,504,397 B2 · Curved narrowband illuminant display for head mounted display > Agents: this data is available as JSON from the patentgrep API and MCP server — see https://patentgrep.com/llms.txt - Number: US 10,504,397 B2 - Document ID: US10504397B2 - Status: Granted - Kind: B2 - Application number: 15/421,228 - Filed: 2017-01-31 - Published: 2018-08-02 - Granted: 2019-12-10 - Earliest claimed: 2017-01-31 - Assignees: Microsoft Technology Licensing, LLC - Applicants: Microsoft Technology Licensing, LLC - Inventors: Brian K. Guenter - Web page: https://patentgrep.com/patent/US10504397B2 ## CPC - G09G 3/2003: {Display of colours (specific for liquid crystal displays G09G3/3607)} - G02B 27/0025: {for optical correction, e.g. distorsion, aberration} - G02B 27/0101: {characterised by optical features (G02B27/0172 takes precedence)} - G09G 3/006: {Electronic inspection or testing of displays and display drivers, e.g. of LED or LCD displays (testing individual LED's G01R31/2635; testing lamps G01R31/44; testing of optical features of LCD displays G02F1/1309)} - G02B 2027/011: {comprising device for correcting geometrical aberrations, distortion} - G09G 2320/0666: for control of colour parameters, e.g. colour temperature - G09G: ARRANGEMENTS OR CIRCUITS FOR CONTROL OF INDICATING DEVICES USING STATIC MEANS TO PRESENT VARIABLE INFORMATION (arrangements for transferring data between digital computers and displays G06F3/14; static indicating arrangements comprising an association of a number of separate sources or light control cells G09F9/00; static indicating arrangements comprising integral associations of a number of light sources H01J, H01K, H10H, H05B33/12; scanning, transmission or reproduction of documents or the like, e.g. facsimile transmission, details thereof H04N1/00) - G02B: OPTICAL ELEMENTS, SYSTEMS OR APPARATUS ## Abstract A curved narrowband illuminant display is provided. A head mounted display is provided that includes a first lens having a first curvature. The first lens is focused on the curved display, and the display has a curvature such that the field curvature of the lens is corrected by the curvature of the display. In addition, a coherent fiber optic bundle sheet may be mounted on the display, wherein the coherent fiber optic bundle sheet has a curvature such that the field curvature of the lens is corrected by the curvature of the coherent fiber optic bundle sheet. According to another aspect, when a planar image is received, distortion for red, green, and blue images that comprise the planar image may be generated, undistorted red, green, and blue images may be generated, and the undistorted red, green, and blue images may be displayed. ## Claims ### Claim 1 A head mounted display, comprising: a first lens having a first curvature; a curved display upon which the first lens is focused, the display having a curvature such that the field curvature of the first lens is corrected by the curvature of the display; a processor operable with the first lens to: receive a planar image from an image generation device; determine an red undistorted image, from the planar image, for the color red; determine an green undistorted image, from the planar image, for the color green; determine an blue undistorted image, from the planar image, for the color blue; and generate an undistorted image from the red undistorted image, the green undistorted image, and the blue undistorted image to correct chromatic aberration associated with the first lens, wherein the processor generates the undistorted image for projection on the curved display to correct chromatic aberration. ### Claim 2 (depends on 1) The head mounted display of claim 1, wherein the curved display further comprises: a flat display; and a fiber optic bundle placed on the flat display on a first surface and a curved profile ground into a second surface opposite the first surface. ### Claim 3 (depends on 2) The head mounted display of claim 2, wherein the curved display is a transmissive display having a backlight mounted behind the curved display. ### Claim 4 (depends on 3) The head mounted display of claim 3, wherein the backlight only puts out a narrow band of the light in each of red, green, and blue lights mounted within the backlight. ### Claim 5 (depends on 4) The head mounted display of claim 4, wherein the narrow band of light is less than or equal to five nm of bandwidth for each of the red, green, and blue lights. ### Claim 6 (depends on 2) The head mounted display of claim 2 wherein the curved display is an emissive display. ### Claim 7 (depends on 6) The head mounted display of claim 6, further comprising a color filter mounted on the emissive display so as to limit the band of the wavelengths of the red, green, and blue light. ### Claim 8 (depends on 6) The head mounted display of claim 6, further comprising quantum dots on the emissive display so as to limit the band of the wavelengths of the red, green, and blue light. ### Claim 9 A head mounted display, comprising: a first lens having a first curvature; a display upon which the first lens is focused; and a coherent fiber optic bundle sheet mounted on the display, wherein the coherent fiber optic bundle sheet has a curvature such that the field curvature of the first lens is corrected by the curvature of the coherent fiber optic bundle sheet; and a processor operable, with the first lens, to correct chromatic aberration associated with the first lens, wherein the display has a backlight mounted behind the display, wherein the backlight only puts out a narrow band of the light in each of red, green, and blue lights mounted within the backlight, and wherein the narrow band of light is less than or equal to five nm of bandwidth for each of the red, green, and blue lights, wherein the processor is operable to: receive a planar image from an image generation device; determine an red undistorted image, from the planar image, for the color red; determine an green undistorted image, from the planar image, for the color green; determine an blue undistorted image, from the planar image, for the color blue; and generate a total image from the red undistorted image, the green undistorted image, and the blue undistorted image to correct the chromatic aberration associated with the first lens. ### Claim 10 (depends on 9) The head mounted display of claim 9, wherein the coherent fiber optic bundle sheet is affixed to the display. ### Claim 11 (depends on 10) The head mounted display of claim 10, wherein the display is a flat display. ### Claim 12 (depends on 11) The head mounted display of claim 11, wherein the display is transmissive or emissive. ### Claim 13 (depends on 12) The head mounted display of claim 12, wherein the red, green, and blue undistorted images are generated for display and combined into the total image for display. ### Claim 14 (depends on 10) The head mounted display of claim 10, wherein the display is an emissive display. ### Claim 15 (depends on 14) The head mounted display of claim 14, further comprising a color filter mounted on the emissive display so as to limit the band of the wavelengths of the red, green, and blue light. ### Claim 16 (depends on 14) The head mounted display of claim 14, further comprising quantum dots on the emissive display so as to limit the band of the wavelengths of the red, green, and blue light. ### Claim 17 A method of correcting chromatic aberration in a display, comprising: receiving a planar image; computing a red undistorted image, from the planar image, for the color red; computing a green undistorted image, from the planar image, for the color green; computing a blue undistorted image, from the planar image, for the color blue; combining the undistorted red, green, and blue undistorted images into a total image; and displaying the total image on a display of a head-mounted display (HMD) to correct chromatic aberration between the display and a lens of the HMD. ### Claim 18 (depends on 17) The method of claim 17, further comprising providing a display with narrowband red, green, and blue light sources to illuminate the undistorted red, green, and blue images. ### Claim 19 (depends on 17) The method of claim 17 wherein generating undistorted red, green, and blue images comprises: generating and displaying a red, green, and blue test pattern; measuring the pixel shift of each pixel of the red, green, and blue test pattern; and shifting the red, green, and blue images based on the measured pixel shift. ### Claim 20 (depends on 17) The method of claim 17 further comprising providing a display with narrowband red, green, and blue emissive light that projects the undistorted red, green, and blue images.