DISPLAY DEVICE AND CONTROL METHOD FOR DISPLAY DEVICE

• US 20160187652A1
• Filed: 12/02/2015
• Published: 06/30/2016
• Est. Priority Date: 12/24/2014
• Status: Active Grant

• Current Assignee: Seiko Epson Corporation (Seiko Group)
• Original Assignee: Seiko Epson Corporation (Seiko Group)
• Inventors: FUJIMAKI, Yutaka, TAKAGI, Masayuki, KIMURA, Fusashi, YAJIMA, Kenro
• Granted Patent: US 10,101,586 B2
• Time in Patent Office: Days
• US Class Current: 1/1
• CPC Class Codes: G02B 2027/0112 comprising device for genereting colour display
• CPC Class Codes: G02B 2027/0118 comprising devices for improving the contrast of the display / brillance control visibility
• CPC Class Codes: G02B 2027/0132 comprising binocular systems
• CPC Class Codes: G02B 2027/014 comprising information/image processing systems
• CPC Class Codes: G02B 2027/0178 Eyeglass type eyeglass details G02C
• CPC Class Codes: G02B 27/017 Head mounted
• CPC Class Codes: G02B 27/0172 characterised by optical features

Abstract

An HMD includes an image display section worn on the head of a user and configured to output image light and an illuminance sensor configured to detect light. The HMD includes a sub-control section. The sub-control section adjusts, on the basis of a detection value of the illuminance sensor, the image light output by the image display section.

Claims

1. A display device comprising:

a display section configured to output image light to a user;

a light detecting section configured to detect light; and

a control section configured to adjust, on the basis of a detection value of the light detecting section, the image light output by the display section.

2. The display device according to claim 1, wherein

the display device is a display device of a head mounted type mounted on a head of a user,

the display section irradiates the image light on eyes of the user, and

the control section performs adjustment processing for adjusting luminance of display of the display section and correction processing for calculating a correction coefficient on the basis of a detection value of the light detecting section and correcting the luminance of the display of the display section.

3. The display device according to claim 2, wherein the control section calculates the correction coefficient using the detection value of the light detecting section.

4. The display device according to claim 3, wherein the control section calculates the correction coefficient by applying the detection value of the light detecting section to an arithmetic expression set in advance and performing arithmetic processing.

5. The display device according to claim 3, wherein the control section calculates the correction coefficient by applying the detection value of the light detecting section to a table set in advance.

6. The display device according to claim 2, wherein the control section performs, in the correction processing, according to the correction coefficient, an arithmetic operation for correcting the luminance of the display after the adjustment processing and corrects the luminance of the display.

7. The display device according to claim 6, wherein the control section multiplies a luminance value of the display of the display section set in the adjustment processing with the correction coefficient and corrects the luminance value of the display of the display section through the correction processing.

8. The display device according to claim 2, wherein the control section executes hysteresis processing in changing a luminance value of the display of the display section to the corrected luminance value through the correction processing and is capable of setting a condition of the hysteresis processing independently when the luminance value of the display of the display section is changed to a high luminance side and when the luminance value is changed to a low luminance side.

9. The display device according to claim 2, wherein

the display section includes a display section for right eye configured to irradiate the image light on a right eye of the user and a display section for left eye configured to irradiate the image light on a left eye of the user, and

the control section sets luminance of the display section for right eye and luminance of the display section for left eye independently from each other through the adjustment processing.

10. The display device according to claim 2, wherein the display section is a display section of a see-through type that transmits external light and makes the external light incident on the eyes of the user.

11. The display device according to claim 10, wherein the light detecting section includes a light sensor that detects light from a direction of visual recognition of the user through the display section.

12. The display device according to claim 2, further comprising a second control section configured separately from the control section and connected to the control section, wherein

the second control section instructs the control section to perform the correction processing, and

the control section executes the adjustment processing and the correction processing on the basis of the instruction of the second control section.

13. The display device according to claim 1, wherein

the display section outputs image light including a plurality of color lights to the user and displays an image, and

the control section controls, on the basis of a detection result of the light detecting section, a color tone of the image light output by the display section.

14. The display device according to claim 13, wherein the light detecting section detects light from a direction different from a direction of the image light output by the display section.

15. The display device according to claim 14, wherein

the display section is worn on the head of the user and configured to output the image light in a state in which external light can be made incident on a visual field of the user, and

the light detecting section detects the external light made incident on the visual field of the user.

16. The display device according to claim 13, wherein

the display section outputs image light including a plurality of color lights to the user and displays an image,

the light detecting section is provided adjacent to the display section and detects light from a front of a face of the user, and

the control section controls, on the basis of a detection result of the light detecting section, the color tone of the image light output by the display section.

17. The display device according to claim 13, wherein the control section causes, on the basis of image data including a plurality of color data, the display section to output the color lights forming the image and, by changing a gradation value of the color data included in the image data, change the color tone of the image light.

18. The display device according to claim 13, wherein the light detecting section includes a sensor that detects intensity of received light for each of a plurality of different wavelengths.

19. The display device according to claim 18, wherein the control section controls, on the basis of the intensity of the light for each wavelength detected by the light detecting section, the color tone of the image light output by the display section.

20. The display device according to claim 19, wherein the control section controls the color tone of the image light to improve visibility of the user for visually recognizing the image light.

21. The display device according to claim 19, wherein the control section controls the luminances of the respective color lights included in the image light to bring the color tone of the image light close to a color tone of the light detected by the light detecting section.

22. The display device according to claim 18, wherein the control section is configured to be capable of executing first processing for controlling, on the basis of the intensity of the light for each wavelength detected by the light detecting section, the luminances of the respective color lights included in the image light to improve visibility of the user for visually recognizing the image light and second processing for controlling, on the basis of the intensity of the light for each wavelength detected by the light detecting section, the luminances of the respective color lights included in the image light to bring the color tone of the image light close to a color tone of the light detected by the light detecting section and selects and executes one of the first processing and the second processing according to an attribute of an image displayed on the display section.

23. The display device according to claim 22, wherein, when executing the first processing, if the intensity of the light detected by the light detecting section is lower than intensity set in advance, the control section changes a ratio of the luminances of the respective color lights included in the image light to a ratio set in advance.

24. The display device according to claim 13, wherein, if the intensity of the light detected by the light detecting section is lower than intensity set in advance, the control section changes a ratio of the luminances of the respective color lights included in the image light to a ratio set in advance.

25. The display device according to claim 24, wherein

the light detecting section is capable of being switched to a first detection state and a second detection state more suitable for detection of light having low intensity than the first detection state, and

when the light detecting section is switched to the second detection state, the control section changes the ratio of the luminances of the respective color lights included in the image light to the ratio set in advance.

26. The display device according to claim 23, wherein, if the intensity of the light detected by the light detecting section is lower than the intensity set in advance, the control section executes contrast correction processing and/or edge correction processing on image data of the image displayed by the display section.

27. The display device according to claim 13, wherein

the display section includes a display region located in a visual field of the user, and

the control section divides the display region into a plurality of portions and controls the color tone of the image light for each of the portions on the basis of a detection result of detection of the external light made incident on the visual field of the user by the light detecting section.

28. The display device according to claim 27, wherein the light detecting section is capable of detecting intensities of respective lights made incident on the visual field of the user from a plurality of directions.

29. A control method for a display device including a display section configured to output image light to a user and a light detecting section configured to detect light, the control method comprising adjusting, on the basis of a detection value of the light detecting section, the image light output by the display section.

30. The control method for the display device according to claim 29, further comprising:

controlling a display device including, as the display section, a display section worn on a head of a user and configured to irradiate image light on eyes of the user; and

executing adjustment processing for adjusting luminance of display of the display section and correction processing for calculating a correction coefficient on the basis of a detection value of the light detecting section and correcting the luminance of the display of the display section.

31. The control method for the display device according to claim 29, further comprising:

controlling a display device including, as the display section, a display section configured to output image light including a plurality of color lights to a user and display an image and including, as the light detecting section, a light detecting section configured to detect light made incident on a visual field of the user from a direction different from a direction of the image light output by the display section; and

controlling, on the basis of a detection result of the light detecting section, a color tone of the image light output by the display section.