Head mounted display

Abstract

A head mounted display is used in a state of being mounted on a user's head and includes a convex lens disposed at a position facing the user's cornea when the head mounted display is mounted. An infrared light source emits infrared light toward the convex lens. A camera captures an image including the user's cornea in a subject. A housing houses the convex lens, the infrared light source, and the camera. The convex lens is provided with a plurality of reflection regions that reflects infrared light in an inside of the convex lens. The infrared light source causes a pattern of infrared light to appear on the user's cornea by emitting infrared light to each of the plurality of reflection regions provided in the convex lens.

1 . A line-of-sight detection system comprising a head-mounted display and a line-of-sight detection device,
 the head-mounted display includes   an image display element that includes a plurality of pixels, each pixel including sub-pixels that emit red, green, blue, invisible light, and displays an image to be viewed by a user;   an imaging unit that images an eye of the user wearing the head-mounted display on the basis of the invisible light emitted from the sub-pixel that emits the invisible light; and   a transmission unit that transmits a captured image captured by the imaging unit, and   the line-of-sight detection device includes   a reception unit that receives the captured image; and   a line-of-sight detection unit that detects a line of sight of the eye of the user based on the captured image.   
     
     
         2 . The line-of-sight detection system according to  claim 1 , wherein the head-mounted display further include a control unit that selects the pixel that emits invisible light among the plurality of pixels constituting the image display element and causes the selected pixel to emit light. 
     
     
         3 . The line-of-sight detection system according to  claim 2 , wherein the control unit changes the pixel that emits the invisible light when a predetermined time elapses. 
     
     
         4 . The line-of-sight detection system according to  claim 2 , wherein the control unit switches and controls a light emission timing of a sub-pixel that emits the invisible light and the sub-pixel other than the sub-pixel that emits the invisible light. 
     
     
         5 . A head-mounted display mounted on a head of a user and used, the head-mounted display comprising:
 a convex lens disposed in a position facing a cornea of the user when the head-mounted display is mounted;   an image display element that includes a plurality of pixels, each pixel including sub-pixels that emit red, green, blue, invisible light, and displays an image to be viewed by a user;   a camera that images a video including the cornea of the user as a subject; and   a housing that houses the convex lens, the image display element, and the camera.   
     
     
         6 . The head-mounted display according to  claim 5 , further comprising a control unit that selects the pixel that emits invisible light among the plurality of pixels constituting the image display element and causes the selected pixel to emit light. 
     
     
         7 . The head-mounted display according to  claim 6 , wherein the control unit changes the pixel that emits the invisible light when a predetermined time elapses. 
     
     
         8 . The head-mounted display according to  claim 6 , wherein the control unit switches and controls a light emission timing of a sub-pixel that emits the invisible light and the sub-pixel other than the sub-pixel that emits the invisible light. 
     
     
         9 . A line-of-sight detection method using a line-of-sight detection system comprising a head-mounted display including an image display element that includes a plurality of pixels, each pixel including sub-pixels that emit red, green, blue, invisible light, and displays an image to be viewed by a user, and a line-of-sight detection device, the line-of-sight detection method comprising:
 an irradiation step of emitting, by the head-mounted display, invisible light from sub-pixels of the plurality of pixels and irradiating a cornea of the user with the invisible light;   an imaging step of imaging, by the head-mounted display, a subject radiated with invisible light emitted from the sub-pixel that emits the invisible light and including a cornea of the user viewing the image displayed on the image display element to generate a captured image;   a transmission step of transmitting, by the head-mounted display, the captured image to the line-of-sight detection device;   a reception step of receiving the captured image by the line-of-sight detection device; and   a detection step of detecting, by the line-of-sight detection device, a direction of a line of sight of the user on the basis of the captured image.   
     
     
         10 . A line-of-sight detection system comprising a head-mounted display and a line-of-sight detection device,
 wherein the head-mounted display includes   an image display element that displays an image to be viewed by a user;   an imaging unit that images an eye of the user in which the image displayed on the image display element is reflected;   a transmission unit that transmits a captured image captured by the imaging unit, and   the line-of-sight detection device includes   a reception unit that receives the captured image; and   a line-of-sight detection unit that detects a direction of a line of sight of the eye of the user on the basis of a feature point of the image displayed on the image display element included in the captured image and a feature point of the image displayed on the image display element.