Photoabsorption remote sensing (pars) imaging methods
US-2024255427-A1 · Aug 1, 2024 · US
Optical image measurement apparatus
US8970848B2 · US · B2
| Field | Value |
|---|---|
| Publication number | US-8970848-B2 |
| Application number | US-201013375160-A |
| Country | US |
| Kind code | B2 |
| Filing date | May 20, 2010 |
| Priority date | Jun 3, 2009 |
| Publication date | Mar 3, 2015 |
| Grant date | Mar 3, 2015 |
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Abstract
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A motion detector 220 calculates the Doppler frequency shift amount based on the movement velocity of an eye E. A drive controller 230 calculates the modulation frequency of the intensity of output light M based on this Doppler frequency shift amount. A light source unit 201 outputs the light M in which the intensity is modulated with this modulation frequency. The light M is divided into a signal light S and a reference light R. Interference light L is generated by superimposing the signal light S passing through the eye E and the reference light R. Two polarized components of the interference light L have a phase difference of 180°, resulting from a quarter-wave plate 207 . The polarized components L 1 , L 2 which are divided by a polarization beam splitter 211 are detected by CCD 212, 213 . A computer 250 forms a tomographical image based on these detection results.
First claim
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What is claimed is: 1. An optical image measurement apparatus according comprising: an optical system that divides light output from a light source into a signal light and a reference light, irradiates a measured object with said signal light, generates interference light by superimposing said signal light passing through said measured object and said reference light passing through a reference light path, and includes a detecting section that detects the interference light; a c…
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Physics · mapped topic
Human Necessities · mapped topic
Human Necessities · mapped topic
- G01N21/4795Primary
Physics · mapped topic
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- What does patent US8970848B2 cover?
- A motion detector 220 calculates the Doppler frequency shift amount based on the movement velocity of an eye E. A drive controller 230 calculates the modulation frequency of the intensity of output light M based on this Doppler frequency shift amount. A light source unit 201 outputs the light M in which the intensity is modulated with this modulation frequency. The light M is divided into…
- Who is the assignee on this patent?
- Fukuma Yasufumi, Akiba Masahiro, Chan Kinpui, and 1 more
- What technology area does this patent fall under?
- Primary CPC classification G01N21/4795. Mapped technology areas include Physics.
- When was this patent published?
- Publication date Tue Mar 03 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).