Apparatus for detecting UV blocking material and mobile device including the apparatus

Patent metadata

Field	Value
Publication number	US-12104954-B2
Application number	US-202217844919-A
Country	US
Kind code	B2
Filing date	Jun 21, 2022
Priority date	Dec 23, 2021
Publication date	Oct 1, 2024
Grant date	Oct 1, 2024

Abstract

An apparatus for detecting an ultraviolet blocking material includes a light receiver configured to acquire detection light from a target object; a spectrum signal generator configured to generate spectrum signals based on the detection light; and a processor configured to: select a reference wavelength from a range from about 290 nm to about 400 nm, and detect an ultraviolet blocking material based on a first spectrum signal of a first wavelength less than the reference wavelength and a second spectrum signal of a second wavelength greater than the reference wavelength, the first spectrum signal and the second spectrum signal being generated by the spectrum signal generator.

First claim

What is claimed is:

1. An apparatus for detecting an ultraviolet blocking material, the apparatus comprising:
a light receiver configured to acquire detection light from a target object;
a spectrum signal generator configured to generate spectrum signals based on the detection light; and
a processor configured to:
select a reference wavelength from a range from about 290 nm to about 400 nm, and
detect an ultraviolet blocking material based on a first spectrum signal of a first wavelength less than the reference wavelength and a second spectrum signal of a second wavelength greater than the reference wavelength, the first spectrum signal and the second spectrum signal being generated by the spectrum signal generator.

2. The apparatus of claim 1 , wherein the spectrum signal generator further comprises a spectral filter configured to filter the detection light for each wavelength among a plurality of wavelengths.

3. The apparatus of claim 2 , wherein the spectral filter is further configured to transmit therethrough light with a wavelength selected from a range from about 100 nm to about 840 nm.

4. The apparatus of claim 2 , wherein the first wavelength and the second wavelength are determined based on the reference wavelength, a central wavelength, and a full width at half maximum, and
the spectral filter is further configured to transmit therethrough light with the first wavelength and the second wavelength.

5. The apparatus of claim 1 , wherein the processor is further configured to select 400 nm as the reference wavelength.

6. The apparatus of claim 1 , wherein the processor is further configured to detect the ultraviolet blocking material based on a change ratio of the second spectrum signal to the first spectrum signal.

7. The apparatus of claim 6 , wherein the processor is further configured to determine that the ultraviolet blocking material is in the target object based on the change ratio of the second spectrum signal to the first spectrum signal being greater than a reference change ratio.

8. The apparatus of claim 1 , wherein the processor is further configured to generate an RGB image by using the second spectrum signal.

9. The apparatus of claim 1 , further comprising a light source configured to emit the detection light toward the target object.

10. The apparatus of claim 1 , further comprising:
a display,
wherein the processor is further configured to generate a hyperspectral image for detecting the ultraviolet blocking material based on the first spectrum signal and the second spectrum signal and control the display to display the hyperspectral image.

11. A mobile device comprising:
a main body case;
a hyperspectral image sensor accommodated in the main body case; and
a processor configured to control the hyperspectral image sensor,
wherein the hyperspectral image sensor comprises a light receiver configured to acquire detection light from a target object, and a spectrum signal generator configured to generate spectrum signals based on the detection light, and
the processor is further configured to:
select a reference wavelength from a range from about 290 nm to about 400 nm, and
detect an ultraviolet blocking material based on a first spectrum signal of a first wavelength less than the reference wavelength and a second spectrum signal of a second wavelength greater than the reference wavelength, the first spectrum signal and the second spectrum signal being generated by the spectrum signal generator.

12. The mobile device of claim 11 , wherein the spectrum signal generator further comprises a spectral filter configured to filter the detection light for each wavelength, among a plurality of wavelengths.

13. The mobile device of claim 12 , wherein the spectral filter is further configured to transmit therethrough light with a wavelength selected from a range from about 100 nm to about 840 nm.

14. The mobile device of claim 12 , wherein the first wavelength and the second wavelength are determined based on the reference wavelength, a central wavelength, and a full width at half maximum, and
the spectral filter is further configured to transmit therethrough light with the first wavelength and the second wavelength.

15. The mobile device of claim 11 , wherein the processor is further configured to select 400 nm as the reference wavelength.

16. The mobile device of claim 11 , wherein the processor is further configured to detect the ultraviolet blocking material based on a change ratio of the second spectrum signal to the first spectrum signal.

17. The mobile device of claim 16 , wherein the processor is further configured to determine that the ultraviolet blocking material is in the target object based on the change ratio of the second spectrum signal to the first spectrum signal being greater than a preset reference change ratio.

18. The mobile device of claim 11 , wherein the processor is further configured to generate an RGB image by using the second spectrum signal.

19. The mobile device of claim 11 , further comprising:
a light source configured to emit the detection light toward the target object.

20. The mobile device of claim 11 , further comprising:
a display, wherein the processor is further configured to generate a hyperspectral image for detecting the ultraviolet blocking material based on the first spectrum signal and the second spectrum signal and control the display to output the hyperspectral image.

Assignees

• Samsung Electronics Co Ltd

Inventors

• Lee Suyeon
• Kim Unjeong
• Kim Hojung

Classifications

• G01J3/0213

  using attenuators · CPC title

• G01N2021/317

  Special constructive features · CPC title

• G01N2021/1765

  Method using an image detector and processing of image signal · CPC title

• G01J2003/2826

  Multispectral imaging, e.g. filter imaging · CPC title

• G01J3/2823

  Imaging spectrometer · CPC title