Patent ID: 11913834
Assignee: ENDRESS+HAUSER OPTICAL ANALYSIS, INC.
Field: Measurement (Instruments)
Classification: CPC G | IPC G

Claim 12:
13. An optical measurement probe for capturing a spectral response through an intervening material emitting unwanted background radiation, the probe comprising:
a first lens configured to receive light and collimate the light into a collimated excitation beam defining a first aperture;
an objective element adapted to focus the collimated excitation beam to a point or region in a sample through the intervening material, wherein the objective element is further adapted to receive light scattered by the sample and the intervening material and to collimate the scattered light into a collimated collection beam defining a second aperture; and
an optical element disposed in the collimated collection beam, wherein the optical element is adapted to redirect the collimated excitation beam to the objective element; and
a blocking element disposed within the collimated collection beam and configured to remove the light scattered by the intervening material from at least a portion of the collimated collection beam received from the sample, wherein the blocking element is a bandpass filter disposed in the collimated excitation beam between the optical element and the objective element.