US 2022/0091037 A1Published application

Optical Sample Characterization

AssigneeLumus Ltd.

InventorsChaim ALDAAG, Tzofia LAVI, Dror HERMONI, Jonathan GELBERG, Yosef LAVIAN, Netanel GOLDSTEIN, Elad SHARLIN, Elad LAVI, Kobi GREENSTEIN, Amir SHAPIRA, Mordechai GILO, Tsion EISENFELD

Life of this patent

Estimating the term…

patentgrep

Loading patent…

Abstract

Optical sample characterization facilitates measurement and testing such as transmittance or reflectance at any discrete angle in a full range of angles of light propagation through a coated glass plate having a higher than air index of refraction. A rotatable assembly includes a cylinder having a hollow, and a receptacle including the hollow. The receptacle also contains a fluid having a refractive index matching the refractive index of the cylinder and coated plate. An optical light beam is input normal to the surface of the cylinder, travels through the cylinder, then via the index matching fluid through the coating, the coated glass plate, the fluid, the other side of the cylinder, and is collected for analysis. Due at least in part to the index matching fluid surrounding the coated plate, the plate can be rotated through a full range of angles (±90°, etc.) for full range testing of the coating.

Claims12

Dependent claims

An apparatus for optical testing of a sample in the form of a plate-shaped optical element (102), the apparatus comprising:

(a) a rotatable assembly comprising:
(i) a general-cylinder (100) having a central hollow (111) including a height axis of said general-cylinder (100), said hollow sized to receive at least a core area of the sample,
(ii) a turntable (406) aligned with said height axis and operable to rotate said rotatable assembly around the height axis of said general-cylinder (100), wherein the general-cylinder (100) is interchangeable and mounted to the turntable (406) by detachable means (410), and
(iii) a receptacle (110) including said hollow, said receptacle sized to receive at least a portion of the sample, and said receptacle sealed for receiving a quantity of index matching fluid (112), such that said fluid surrounds and is in contact with at least said core area, and is in contact with said general-cylinder (100), and
(b) an optical arrangement:
(i) aligned with said height axis,
(ii) including an optical source (4) for providing an optical light beam (420) normal to a circumferential surface area at a first side (100L) of said general-cylinder (100), such that said optical light beam impinges on the core area of the sample, and
(iii) including an optical detector (104) for accepting said optical light beam normal to a circumferential surface area at a second side (100R) of said general-cylinder (100) after said optical light beam has been transmitted through or reflected from the core area of the sample.

5 more elements

Dependencies are inferred from the claim text.

Facts

Application: 17/543,977Filed 7 Dec 2021
Priority: 8 Apr 2018
Published: 24 Mar 2022
Term ends: Not estimatedThe source records don’t support an estimate.

Classification7 codes

G01N 21/55
Systems in which incident light is modified in accordance with the properties of the material investigated: specular reflectivity
G01N 21/59
Systems in which incident light is modified in accordance with the properties of the material investigated: transmissivity
G01N 21/8422
Systems specially adapted for particular applications: investigating thin films, e.g. matrix isolation method
G01N 2021/8427
Investigating thin films, e.g. matrix isolation method: coatings

Family

Application62/654,460Us provisional application · filed 8 Apr 2018
Application17/043,842Continuation · filed 30 Sep 2020
Application17/543,977Continuation
US 11,221,294 B2Related patent
US 11,662,311 B2Related patent
US 2021/0055218 A1Published application
US 2022/0091037 A1This patent

From the US filing history. Foreign family members aren’t listed.