DEVICE

• US 20150377775A1
• Filed: 09/03/2015
• Published: 12/31/2015
• Est. Priority Date: 03/04/2013
• Status: Active Grant

• Current Assignee: Panasonic Intellectual Property Management Co., Ltd. (Panasonic Holdings Corporation)
• Original Assignee: Panasonic Intellectual Property Management Co., Ltd. (Panasonic Holdings Corporation)
• Inventors: SAKAI, Koji, MATSUO, Naoya, HOSHINO, Narutoshi, SHIMOMURA, Tsutomu
• Granted Patent: US 10,018,556 B2
• Time in Patent Office: Days
• US Class Current: 1/1
• CPC Class Codes: G01N 21/0303 Optical path conditioning in cuvettes, e.g. windows; adapted optical elements or systems; path modifying or adjustment G01N21/031 - G01N21/15 take precedence
• CPC Class Codes: G01N 21/05 Flow-through cuvettes G01N21/09 takes precedence; handling fluid samples G01N1/10
• CPC Class Codes: G01N 21/35 using infrared light G01N21/39 takes precedence
• CPC Class Codes: G01N 21/3504 for analysing gases, e.g. multi-gas analysis
• CPC Class Codes: G01N 21/552 Attenuated total reflection

Abstract

A device includes a light emitting element, a light receiving element, an electronic part capable of processing a signal output from the light receiving element, an optical member covering the light emitting element and the light receiving element, and a board on which the light emitting element, the light receiving element, the electronic part, and the optical member are mounted. The board includes conductor wiring electrically connected to the light receiving element.

Claims

1. A device comprising:

a light emitting element;

a light receiving element;

an electronic part capable of processing a signal output from the light receiving element;

an optical member covering the light emitting element and the light receiving element; and

a board on which the light emitting element, the light receiving element, the electronic part, and the optical member are mounted,

wherein the board includes conductor wiring electrically connected to the light receiving element.

2. The device according to claim 1, wherein an upper surface of the light emitting element and an upper surface of the light receiving element are disposed at positions higher than a position of an upper surface of the electronic part.

3. The device according to claim 1, further comprising a support body disposed between the board and the optical member,

wherein the light emitting element and the light receiving element are mounted on the support body, and

the electronic part is mounted directly on the board.

4. The device according to claim 1, wherein the electronic part is disposed in a space surrounded by the optical member and the board.

5. The device according to claim 1, further comprising a reflection body disposed above the light emitting element and the light receiving element, and provided with a first opening immediately above the light emitting element and a second opening immediately above the light receiving element.

6. The device according to claim 5, wherein

the first opening has a shape flaring with farness from the surface of the board in a direction perpendicular to a surface of the board, and

the second opening has a shape flaring with farness from the surface of the board in a direction perpendicular to the surface of the board.

7. The device according to claim 5, wherein

the optical member includes a first reflection mirror,

the reflection body includes a second reflection mirror provided on an inner wall within the first opening, and a third reflection mirror provided on an inner wall within the second opening.

8. The device according to claim 5, wherein the reflection body is made of metal, and electrically connected with the optical member.

9. The device according to claim 5, wherein the reflection body includes a first translucent cover member closing the first opening, and a second translucent cover member closing the second opening.

10. The device according to claim 1, wherein the optical member includes metal material electrically connected to ground of the board.

11. The device according to claim 1, further comprising an optical filter laid on an optical path for guiding infrared light from the light emitting element toward the light receiving element side, and capable of transmitting infrared light in a predetermined wavelength band.

12. The device according to claim 11, wherein

the optical filter includes a first optical filter having a transmission band containing a wavelength band of infrared light absorbed by gas that is a detection target, and a second optical filter having a transmission band different from the transmission band of the first optical filter, and

the light receiving element includes a first light receiving element capable of photoelectrically converting infrared light transmitted through the first optical filter, and a second light receiving element capable of photoelectrically converting infrared light transmitted through the second optical filter.

13. The device according to claim 1, wherein

the optical member includes one end side, and the other end side on a side opposite to the one end side in a plan view,

the light emitting element is present on the one end side, and

the light receiving element is present on the other end side.

14. The device according to claim 1, wherein light emitted from the light emitting element is reflected on a side opposite to a side where the light emitting element is disposed, and is guided toward the light receiving element disposed on a side where the light emitting element is disposed.

15. The device according to claim 1, wherein

the optical member includes one end side, and the other end side on a side opposite to the one end side in a plan view, and

each of the light emitting element and the light receiving element is present at a position nearer to the one end side than the electronic part is.

16. The device according to claim 1, wherein

light emitted from the light emitting element travels in a direction perpendicular to the surface of the board, and

light after reflection travels in a direction perpendicular to the surface of the board toward the light receiving element.

17. The device according to claim 1, wherein the optical member have a larger length in a vertical direction than in a planar direction.

18. The device according to claim 1, wherein the optical member guides light emitted from the light emitting element toward the light receiving element.