US 2020/0025611 A1 · COMPACT SPECTROMETER HAVING REFLECTIVE WEDGE STRUCTURE

Abstract

Systems and methods which provide a compact spectrometer using static Fourier transform interferometer (SFTI) cube configurations, such as are suitable for use with respect to mobile and portable electronic devices, are described. A SFTI cube of embodiments comprises a monolithic dual mirrored wedge beam splitter structure wherein mirrored wedge surfaces provide two reflective mirrors that are slightly tilted away from the orthogonal directions so that the resultant beams of light cross over one another and form an interference pattern. SFTI cube implementations of embodiments facilitate highly compact spectrometer configurations having a wide wavelength range, high resolution, high throughput, and low cost.

Claims44

Dependent claims

A system for generation of interferograms, the system comprising:

a monolithic beam splitter cube member having at least two reflective wedge surfaces, wherein the wedge surfaces are provided as part of a monolithic structure of the beam splitter cube member, and wherein a first and second reflective wedge surface of the at least two reflective wedge surfaces are tilted away from orthogonal directions by wedge angles α1 and α2 respectively so that beams of light provided by a beam splitter of the beam splitter cube member cross over one another and form an interference pattern;
and
a light source converter disposed in an optical input path of the beam splitter cube member.

Dependencies are inferred from the claim text.

Compact spectrometer having reflective wedge structure

Life of this patent

Compact spectrometer having reflective wedge structure

Life of this patent

Abstract

Claims44