| 54 |
Title |
TI |
[EN] Circular Birefringence Refractometer: Method And Apparatus For Measuring Optical Activity |
| 71/73 |
Applicant/owner |
PA |
FISCHER PEER
;
GHOSH AMBARISH
|
| 72 |
Inventor |
IN |
FISCHER PEER, US
;
GHOSH AMBARISH, US
|
| 22/96 |
Application date |
AD |
Jun 27, 2007 |
| 21 |
Application number |
AN |
30584007 |
|
Country of application |
AC |
US |
|
Publication date |
PUB |
Sep 16, 2010 |
33
31
32 |
Priority data |
PRC
PRN
PRD |
US
2007072248
Jun 27, 2007
|
33
31
32 |
PRC
PRN
PRD |
US
80607406
Jun 28, 2006
|
| 51 |
IPC main class |
ICM |
G01J 4/02
(2006.01)
|
| 51 |
IPC secondary class |
ICS |
|
|
IPC additional class |
ICA |
|
|
IPC index class |
ICI |
|
|
Cooperative patent classification |
CPC |
G01J 4/02
G01N 21/23
|
|
MCD main class |
MCM |
G01J 4/02
(2006.01)
|
|
MCD secondary class |
MCS |
|
|
MCD additional class |
MCA |
|
| 57 |
Abstract |
AB |
[EN] A system and method for detection and measurement of circular birefringences in materials, such as optically active (chiral) liquids and materials that exhibit the Faraday effect. The method and apparatus permit the detection of optical activities via the difference in the directions of propagation the left- and the right-circularly polarized light (components). A beam of light is directed at an interface formed by the optically active medium and another medium such that a difference in the angles of refraction and/or reflection and/or diffraction between the left- and the right-circularly polarized components of the light beam can be detected. The difference in the propagation directions between the two circularly polarized light components is measured on a position sensitive detector and/or is detected as an intensity difference. The circular birefringence in isotropic liquids is a measure of their optical purity (enantiomeric excess) and hence the invention presents a method and apparatus to measure chirality. The invention is thus related to optical rotation (polarimetric) measurements, but has the advantage that it does not depend on path-length traversed through the sample. |
| 56 |
Cited documents identified in the search |
CT |
US000005486940A
US000006166807A
US000006466320B1
US000006620622B1
US000006687012B2
US000007301633B2
US000007599062B2
US020030081221A1
US020050094144A1
|
| 56 |
Cited documents indicated by the applicant |
CT |
|
| 56 |
Cited non-patent literature identified in the search |
CTNP |
|
| 56 |
Cited non-patent literature indicated by the applicant |
CTNP |
|
|
Citing documents |
|
CN000103733044A
CN000104406544A
CN000105469847A
CN000110268248A
CN000111125869A
CN000113758877A
JP002014521981A
JP002017223690A
US000007884944B2
US000008212995B2
US000009041935B2
US000009076632B2
US000009476699B2
US000009689666B2
US000010078232B1
US000010139340B2
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US000010184903B2
US000010394058B1
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US020170074806A1
US020170078540A1
US020170115214A1
US020220364982A1
WO002013025851A1
WO002018102413A1
|
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Sequence listings |
|
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Search file IPC |
ICP |
G01J 4/02
|
