Occlusion sensing for an infusion pump
US-9717849-B2 · Aug 1, 2017 · US
Sensor head and optical sensor
US8934739B2 · US · B2
| Field | Value |
|---|---|
| Publication number | US-8934739-B2 |
| Application number | US-201113198268-A |
| Country | US |
| Kind code | B2 |
| Filing date | Aug 4, 2011 |
| Priority date | Aug 6, 2010 |
| Publication date | Jan 13, 2015 |
| Grant date | Jan 13, 2015 |
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Abstract
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A sensor head for an optical pressure sensor according to the present invention includes: a light-emitting optical fiber for transmitting light emitted from a light source; a reflecting plate whose position relative to an end surface of the light-emitting optical fiber moves in accordance with a pressure and which reflects the light emitted from the end surface of the light-emitting optical fiber; a first optical fiber and a second optical fiber, each of which has an end surface that the light reflected by the reflecting plate enters, the first optical fiber transmitting the light thus entered to a first photodetector and the second optical fiber transmitting the light thus entered to a second photodetector; and a light-intensity variation section that changes a transmission loss in the light-emitting optical fiber in accordance with a change in humidity in the sensor head.
First claim
Opening claim text (preview).
The invention claimed is: 1. A sensor head for use in an optical sensor for measuring a physical quantity, the sensor head comprising: a first optical fiber for transmitting light emitted from a light source; a reflector whose position relative to an end surface of the first optical fiber moves in accordance with the physical quantity and which reflects the light emitted from the end surface of the first optical fiber; a second optical fiber and a third optical fiber, each of…
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Physics · mapped topic
- G01L9/0077Primary
Physics · mapped topic
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Frequently asked questions
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- What does patent US8934739B2 cover?
- A sensor head for an optical pressure sensor according to the present invention includes: a light-emitting optical fiber for transmitting light emitted from a light source; a reflecting plate whose position relative to an end surface of the light-emitting optical fiber moves in accordance with a pressure and which reflects the light emitted from the end surface of the light-emitting optical fib…
- Who is the assignee on this patent?
- Awaji Daisuke, Sakamoto Akira, Fujikura Ltd
- What technology area does this patent fall under?
- Primary CPC classification G01L9/0077. Mapped technology areas include Physics.
- When was this patent published?
- Publication date Tue Jan 13 2015 00:00:00 GMT+0000 (Coordinated Universal Time) (B2). Legal status and post-grant events are not shown on this page.
- What related patents are in patentsdb?
- We list 8 related publications on this page (citations in our corpus or others sharing the same primary CPC).