DETECTING DEVICE

• US 20140051955A1
• Filed: 08/20/2013
• Published: 02/20/2014
• Est. Priority Date: 08/20/2012
• Status: Active Grant

• Current Assignee: Taiwan Biophotonic Corporation
• Original Assignee: Industrial Technology Research Institute
• Inventors: Tiao, Kuo-Tung, Chen, Jyh-Chern, Li, Yu-Tang, Chu, Chang-Sheng, Chung, Shuang-Chao, Fan, Chih-Hsun, Li, Ming-Chia
• Granted Patent: US 9,883,824 B2
• Time in Patent Office: Days
• US Class Current: 600/323
• CPC Class Codes: A61B 5/00 Measuring for diagnostic purposes radiation diagnosis A61B6/00; diagnosis by ultrasonic, sonic or infrasonic waves A61B8/00; Identification of persons
• CPC Class Codes: A61B 5/1455 using optical sensors, e.g. spectral photometrical oximeters
• CPC Class Codes: A61B 5/14552 Details of sensors specially adapted therefor

Abstract

A detecting device includes at least one detecting module. In the detecting module, a light source unit is configured to emit a first beam and a second beam. The wavelength of the first beam is different from that of the second beam. A packaging unit is disposed on the light source unit and a light detecting unit and on transmission paths of the first beam and the second beam from the light source unit. An optical microstructure unit is disposed on the transmission paths of the first beam and the second beam. The first beam and the second beam emitted from the light source unit pass through the packaging unit to pass the optical microstructure unit to be transmitted to a biological tissue, and then pass through the optical microstructure unit to pass the packaging unit to be transmitted to the light detecting unit in sequence.

Claims

1. A detecting device configured to detect a physiological parameter of a biological tissue, the detecting device comprising at least one detecting module, the detecting module comprising:

a light source unit configured to emit a first beam and a second beam, wherein a wavelength of the first beam is different from a wavelength of the second beam;

a light detecting unit;

a packaging unit disposed on the light source unit and a light detecting unit and located on transmission paths of the first beam and the second beam from the light source unit; and

an optical microstructure unit disposed on the transmission paths of the first beam and the second beam, wherein the first beam and the second beam emitted from the light source unit pass through the packaging unit, pass through the optical microstructure unit, are transmitted to a biological tissue, pass through the optical microstructure unit, pass through the packaging unit, and are transmitted to the light detecting unit in sequence.

2. The detecting device of claim 1, wherein the packaging unit comprises a waveguide covering the light source unit and the light detecting unit.

3. The detecting device of claim 1, wherein the optical microstructure unit is mounted on the packaging unit.

4. The detecting device of claim 1, wherein the optical microstructure unit maintains a distance away from the packaging unit.

5. The detecting device of claim 1, wherein the optical microstructure unit is a surface microstructure of the packaging unit.

6. The detecting device of claim 1, wherein the optical microstructure unit comprises a diffractive optical element structure, a holographic optical element, a computer-generated holographic element structure, a fresnel lens structure or a lens grating.

7. The detecting device of claim 1, wherein the packaging unit comprises:

a first waveguide covering the light source unit; and

a second waveguide covering the light detecting unit, wherein the detecting module further comprises a light separating unit separating the first waveguide and the second waveguide.

8. The detecting device of claim 1, wherein the detecting module further comprises an outer cover covering the light source unit, the light detecting unit and the packaging unit.

9. The detecting device of claim 1, wherein the light source unit comprises:

a first light-emitting element configured to emit the first beam; and

a second light-emitting element configured to emit the second beam, wherein the first light-emitting element and the second light-emitting element alternately emit the first beam and the second beam, and the light detecting unit comprises a light detector.

10. The detecting device of claim 1, wherein the light detecting unit comprises:

a first light detector, wherein the optical microstructure unit transmits the first beam from the biological tissue to the first light detector; and

a second light detector, wherein the optical microstructure unit transmits the second beam from the biological tissue to the second light detector, and the light source unit simultaneously emits the first beam and the second beam.

11. The detecting device of claim 10, wherein the light source unit comprises:

a light-emitting element having a light-emitting surface and being configured to emit an original beam from the light-emitting surface, wherein a wavelength of the original beam is identical to the wavelength of the first beam; and

a wavelength converting material covering a first portion of the light-emitting surface, and exposing a second portion of the light-emitting surface, wherein at least a part of the original beam emitted by the first portion is converted into the second beam by the wavelength converting material, and the first beam is formed by the original beam emitted by the second portion.

12. The detecting device of claim 1, wherein the optical microstructure unit comprises:

a first optical microstructure disposed on the transmission paths of the first beam and the second beam from the light source unit, configured to transmit the first beam and the second beam from the light source unit to the biological tissue; and

a second optical microstructure disposed on the transmission paths of the first beam and the second beam from the biological tissue, configured to transmit the first beam and the second beam from the biological tissue to the light detecting unit.

13. The detecting device of claim 1, further comprising a calculating unit electrically connected to the light detecting unit, wherein the light detecting unit converts the first beam and the second beam being detected into an electrical signal, and the calculating unit calculates the physiological parameter according to the electrical signal.

14. The detecting device of claim 1, wherein the physiological parameter is a blood oxygenation.

15. The detecting device of claim 1, wherein the light source unit comprises a light-emitting diode, an organic light-emitting diode or a laser diode.

16. The detecting device of claim 1, wherein the at least one detecting module is a plurality of detecting modules, and the detecting modules are arranged in a two-dimensional array.

17. The detecting device of claim 1, wherein the packaging unit is capable of being penetrated by the first beam and the second beam.

18. The detecting device of claim 1, wherein the wavelengths of the first beam and the second beam fall within wavelength ranges of a red light and an infrared light.

19. The detecting device of claim 1, wherein the light source unit and the light detecting unit are located at an identical side of the biological tissue.

20. The detecting device of claim 1, wherein the light detecting unit comprises a photodiode.