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US 12,566,133 B2Granted
Line field swept source oct system and spectroscopy system
AssigneeKineoLabs, Inc.
InventorsWalid A. Atia, Dale C. Flanders
Life of this patent
Estimating the term…
Abstract
A line field optical coherence tomography (OCT) system and an absorption spectrometer system employing a tunable or swept laser architecture. The laser is a cat's-eye configuration with a preferably transmissive tilt tuned interference thin film filter.
Claims15
An optical coherence tomography system, comprising:
- a tunable laser, including a gain chip;
- a collimating lens for collimating light from the gain chip, an end reflector, a focusing lens for focusing the collimated light on the end reflector, a thin film bandpass filter between the collimating lens and the focusing lens, a galvanometer for changing an angle of the thin film filter to the collimated light, an encoder of the galvanometer for producing an angle signal indicating an angle of the galvanometer, and a controller that compares the angle signal to a tuning function to produce a control function to drive the galvanometer;
- an interferometer including a reference arm and a sample arm and receiving light from the tunable laser;
- and
- a sensor for detecting an interference signal between light from the reference arm and the sample arm.
2 more elements
A spectroscopy system, comprising:
- a tunable laser, including a gain chip;
- a collimating lens for collimating light from the gain chip, an end reflector, a focusing lens for focusing the collimated light on the end reflector, a thin film bandpass filter between the collimating lens and the focusing lens, a galvanometer for changing an angle of the thin film filter to the collimated light, an encoder of the galvanometer for producing an angle signal indicating an angle of the galvanometer, and a controller that compares the angle signal to a tuning function to produce a control function to drive the galvanometer;
- a sample cell containing a sample;
- a detector for detecting light from the tunable laser after passing through the sample cell;
- and
- a processor that controls the angle control actuator and monitors a time response of the detector to resolve an absorption spectrum of the sample.
3 more elements
Dependencies are inferred from the claim text.