Imaging systems for optical computing devices
First Claim
1. A method of operating an optical computing device, comprising:
- optically interacting electromagnetic radiation with a sample and at least one integrated computational element arranged in an optical train of the optical computing device, the sample being configured to generate optically interacted radiation, and the at least one integrated computational element including a plurality of layers of materials;
transmitting the electromagnetic radiation through a sampling window arranged adjacent the sample, the sampling window having one or more surfaces that generate one or more stray signals;
receiving and focusing the optically interacted radiation with a first focal lens and thereby generating a primary focal point;
aligning the primary focal point at a spatial aperture defined in a structural element arranged within the optical train such that the optically interacted radiation passes through the spatial aperture unobstructed; and
substantially blocking a transmission of the one or more stray signals with the structural element.
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Accused Products
Abstract
Optical computing devices are disclosed. One optical computing device includes an electromagnetic radiation source that emits electromagnetic radiation into an optical train to optically interact with a sample and at least one integrated computational element, the sample being configured to generate optically interacted radiation. A sampling window is arranged adjacent the sample and configured to allow transmission of the electromagnetic radiation therethrough and has one or more surfaces that generate one or more stray signals. A first focal lens is arranged to receive the optically interacted radiation and the one or more stray signals and generate a primary focal point from the optically interacted radiation. A structural element defines a spatial aperture aligned with the primary focal point such that the optically interacted radiation is able to pass therethrough while transmission of the one or more stray signals is substantially blocked by the structural element.
114 Citations
12 Claims
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1. A method of operating an optical computing device, comprising:
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optically interacting electromagnetic radiation with a sample and at least one integrated computational element arranged in an optical train of the optical computing device, the sample being configured to generate optically interacted radiation, and the at least one integrated computational element including a plurality of layers of materials; transmitting the electromagnetic radiation through a sampling window arranged adjacent the sample, the sampling window having one or more surfaces that generate one or more stray signals; receiving and focusing the optically interacted radiation with a first focal lens and thereby generating a primary focal point; aligning the primary focal point at a spatial aperture defined in a structural element arranged within the optical train such that the optically interacted radiation passes through the spatial aperture unobstructed; and substantially blocking a transmission of the one or more stray signals with the structural element. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9)
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10. A method of operating an optical computing device, comprising:
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optically interacting a sample with electromagnetic radiation transmitted through an integrated computational element arranged adjacent the sample and generating a modified electromagnetic radiation therefrom, the integrated computational element including a plurality of layers of materials, and the integrated computational element having one or more surfaces that generate one or more stray signals; receiving and focusing the modified electromagnetic radiation with a focal lens and thereby generating a primary focal point; aligning a first detector such that the primary focal point comprising the modified electromagnetic radiation impinges upon the detector; and generating with the first detector an output signal corresponding to a characteristic of the sample. - View Dependent Claims (11, 12)
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Specification