Electronic device and ultraviolet light measuring method therefor

Patent metadata

Field	Value
Publication number	US-11060904-B2
Application number	US-201816480150-A
Country	US
Kind code	B2
Filing date	Jan 8, 2018
Priority date	Jan 26, 2017
Publication date	Jul 13, 2021
Grant date	Jul 13, 2021

Abstract

The present invention relates to an electronic device and a method for measuring ultraviolet light by using an electronic device including a camera. The electronic device according to various embodiments of the present invention comprises: a display; an image sensor for acquiring an image by using light including a first wavelength band or a second wavelength band; and a processor, wherein the processor can be set so as to compare a first image acquired using the light of the first wavelength band with a second image acquired using the light of the second wavelength band, acquire, on the basis of the comparison result, information on ultraviolet reflectance for at least a part of at least one subject included in the first image or the second image, and display at least a part of the acquired information on the ultraviolet reflectance by using the display.

First claim

The invention claimed is:

1. An electronic device comprising:
a display;
an image sensor configured to obtain an image using light of a first wavelength band or light of a second wavelength band; and
a processor, wherein the processor is configured to:
compare a first image obtained using the light of the first wavelength band and a second image obtained using the light of the second wavelength band,
obtain information on ultraviolet reflectance of at least a portion of at least one subject included in the first image or the second image, based on a result of the comparison, and
display at least some of the obtained information on the ultraviolet reflectance using the display.

2. The electronic device of claim 1 , wherein the first wavelength band includes an infrared band, a visible light band, and an ultraviolet band, and the second wavelength band includes an infrared band or a visible light band.

3. The electronic device of claim 1 , wherein the image sensor comprises:
a first image sensor configured to obtain an image using the light of the first wavelength band; and
a second image sensor configured to obtain an image using the light of the second wavelength band.

4. The electronic device of claim 1 , further comprising a filter configured to block light of at least a portion of the first wavelength band, wherein the processor is configured to:
obtain the first image using the light of the first wavelength band after deactivating the filter,
store the obtained first image in a memory of the electronic device,
obtain the second image using the light of the second wavelength band from which the light of at least a portion of the first wavelength band is blocked after activating the filter, and
compare the stored first image and the obtained second image.

5. The electronic device of claim 4 , wherein the filter comprises:
a transparent member configured to form at least a portion of external surfaces of the filter;
a transparent anode and a transparent cathode coated with an electrochromic material; and
an electrolyte located inside the filter and between the transparent anode and the transparent cathode.

6. The electronic device of claim 4 , wherein the filter comprises:
a first polarizing plate disposed on a first surface in a first direction on external surfaces of the filter;
a second polarizing plate having a polarizing axis orthogonal to a polarizing axis of the first polarizing plate and disposed on a second surface in a second direction opposite the first direction on the external surfaces of the filter; and
a liquid crystal disposed between the first polarizing plate and the second polarizing plate.

7. The electronic device of claim 4 , wherein the filter comprises:
a blocking plate configured to block the light of at least a portion of the first wavelength band;
a flat plate comprising at least one hole through which the light of the first wavelength band passes; and
an actuator configured to move the blocking plate in order to open/close the at least one hole formed in the flat plate.

8. The electronic device of claim 1 , wherein the processor is configured to:
obtain a differential image using the first image and the second image, and
obtain the information on the ultraviolet reflectance, based on the obtained differential image.

9. The electronic device of claim 8 , wherein the processor is configured to display the information on the ultraviolet reflectance obtained based on the differential image or the at least a portion of the at least one subject.

10. A method of obtaining an image through an electronic device comprising an image sensor, the method comprising:
comparing a first image obtained using light of a first wavelength band and a second image obtained using light of a second wavelength band;
obtaining information on ultraviolet reflectance of at least a portion of at least one subject included in the first image or the second image, based on a result of the comparison; and
displaying at least some of the obtained information on the ultraviolet reflectance using a display.

11. The method of claim 10 , wherein the first wavelength band includes an infrared band, a visible light band, and an ultraviolet band, and the second wavelength band includes an infrared band or a visible light band.

12. The method of claim 10 , wherein the comparing comprises:
obtaining the first image through a first image sensor configured to obtain an image using the light of the first wavelength band; and
obtaining the second image through a second image sensor configured to obtain an image using the light of the second wavelength band.

13. The method of claim 10 , wherein the electronic device further comprises a filter configured to block light of at least a portion of the first wavelength band,
the method further comprising:
obtaining the first image using the light of the first wavelength band after deactivating the filter;
storing the obtained first image in a memory of the electronic device;
obtaining the second image using the light of the second wavelength band from which the light of at least a portion of the first wavelength band is blocked after activating the filter; and
comparing the stored first image and the obtained second image.

14. The method of claim 13 , wherein the filter comprises:
a transparent member configured to form at least a portion of external surfaces of the filter;
a transparent anode and a transparent cathode coated with an electrochromic material; and
an electrolyte located inside the filter and between the transparent anode and the transparent cathode.

15. The method of claim 13 , wherein the filter comprises:
a first polarizing plate disposed on a first surface in a first direction on the external surfaces of the filter;
a second polarizing plate having a polarizing axis orthogonal to a polarizing axis of the first polarizing plate and disposed on a second surface in a second direction opposite the first direction on the external surfaces of the filter; and
a liquid crystal disposed between the first polarizing plate and the second polarizing plate.

16. The method of claim 13 , wherein the filter comprises:
a blocking plate configured to block the light of at least a portion of the first wavelength band;
a flat plate comprising at least one hole through which the light of the first wavelength band passes; and
an actuator configured to move the blocking plate in order to open/close the at least one hole formed in the flat plate.

17. The method of claim 13 , further comprising:
obtaining a differential image using the first image and the second image; and
obtaining the information on the ultraviolet reflectance, based on the obtained differential image.

18. The method of claim 17 , further comprising displaying the information on the ultraviolet reflectance obtained based on the differential image or the at least a portion of the at least one subject.

19. A non-transitory computer-readable recording medium having a program recorded on the computer to perform a method of obtaining an image through an electronic device comprising an image sensor, the method comprising:
comparing a first image obtained using light of a first wavelength band and a second image obtained using light of a second wavelength band;
obtaining information on ultraviolet reflectance of at least a portion of at least one subject included in the first image or the second image, based on a result of the comparison; and
displaying at least some of the obtain

Assignees

• Samsung Electronics Co Ltd

Inventors

• Jeong In-Jo
• Ha Jung-Su
• Suh Haebahremahram
• Chun Jae-Bong

Classifications

• H10K59/65

  OLEDs integrated with inorganic image sensors · CPC title

• G01J1/42

  using electric radiation detectors (optical or mechanical part G01J1/04; by comparison with a reference light or electric value G01J1/10) · CPC title

• G02B27/288

  Filters employing polarising elements, e.g. Lyot or Solc filters (G02B5/3016 takes precedence) · CPC title

• G01J1/0429

  using polarisation elements · CPC title

• G01J1/44

  Electric circuits {(for command of an exposure part G03B7/02)} · CPC title