Ophthalmologic information processing apparatus, ophthalmologic apparatus, ophthalmologic information processing method, and recording medium
US-11980416-B2 · May 14, 2024 · US
Short coherence interferometry for measuring distances
US9155462B2 · US · B2
| Field | Value |
|---|---|
| Publication number | US-9155462-B2 |
| Application number | US-200913000276-A |
| Country | US |
| Kind code | B2 |
| Filing date | Jun 12, 2009 |
| Priority date | Jun 20, 2008 |
| Publication date | Oct 13, 2015 |
| Grant date | Oct 13, 2015 |
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Abstract
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A short coherence interferometer for measuring several axially spaced-apart regions of a sample, especially of an eye, which has a measuring optical path, through which the measuring radiation falls on the sample, a tunable interferometer for the axial, relative retardation of parts of the radiation, wherein the axial relative retardation is assigned to the axial spacing of the regions and a detector for producing an interference signal from interfering measurement radiation, scattered or reflected back from the sample as sample radiation. The tunable interferometer divides the sample radiation into two parts, which are axially relatively retarded and superimposed so as to interfere. During the superimposition, the tunable interferometer forms individual radiations, which represent quadrature components of the sample radiation, and the detector detects the individual radiations.
First claim
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The invention claimed is: 1. A Short-coherence interferometry method for measuring two axially spaced regions of a sample or an eye, comprising using a radiation source providing measurement radiation and using a coupling element; performing polarization splitting of the measurement radiation coming from the radiation source by the coupling element into a measurement beam and a reference radiation which has a polarization state different from the measurement beam; directing th…
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Human Necessities · mapped topic
- A61B3/1005Primary
Human Necessities · mapped topic
Physics · mapped topic
Human Necessities · mapped topic
Physics · mapped topic
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- What does patent US9155462B2 cover?
- A short coherence interferometer for measuring several axially spaced-apart regions of a sample, especially of an eye, which has a measuring optical path, through which the measuring radiation falls on the sample, a tunable interferometer for the axial, relative retardation of parts of the radiation, wherein the axial relative retardation is assigned to the axial spacing of the regions and a de…
- Who is the assignee on this patent?
- Hacker Martin, Ebersbach Ralf, Pabst Thomas, and 1 more
- What technology area does this patent fall under?
- Primary CPC classification A61B3/1005. Mapped technology areas include Human Necessities.
- When was this patent published?
- Publication date Tue Oct 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).