Filter
AssigneeBAH Holdings LLC
InventorsNone recorded
Life of this patent
Estimating the term…
Abstract
A filter for use in a spectrometer to filter transmitted radiation and wherein the filter has a birefringent element responsive to an applied signal, a first polarizer for polarizing the radiation transmitted by a sample, a second polarizer for polarizing the radiation transmitted by the birefringent element, and wherein the birefringent element has a birefringent member having a first birefringence and the birefringent member being responsive to a force applied thereto to generate an additional second birefringence; and the filter having a driver for applying a force to the birefringent member in accordance with the applied signal, and the driver has a piezoelectric member coupled to the birefringent member on one end or at two opposite ends.
Claims5
A filter for use in a spectrometer, the filter being arranged to filter radiation transmitted by a sample, the filter comprising:
- a first polarizer for polarizing the radiation transmitted by the sample;
- a birefringent element responsive to an applied signal, wherein the birefringent element modifies the polarization of the polarized radiation in accordance with the wavelength of the radiation and the applied signal;
- and,
- a second polarizer for polarizing the radiation transmitted by the birefringent element, the radiation being transmitted in a transmission direction, characterized in that the birefringent element comprises:
- a birefringent member having a first birefringence, the birefringent member being responsive to a force applied thereto to generate an additional second birefringence;
- and, a driver for applying a force to the birefringent member in accordance with the applied signal, and the driver comprises a piezoelectric member coupled to the birefringent member on one end or at two opposite ends.
Dependencies are inferred from the claim text.