公开(公告)号：US20180136039A1

公开(公告)日：2018-05-17

申请号：US15579201

申请日：2016-06-07

Applicant: University of Rochester

Inventor： Jannick P. Rolland ,  Jacob Reimers

IPC: G01J3/02 ,  G01J3/18 ,  G01J3/28

CPC classification number: G01J3/021 ,  G01J3/0208 ,  G01J3/18 ,  G01J3/2823

Abstract: Expanded performance opportunities for imaging spectrometers are described using φ-polynomial freeform surfaces in reflective and diffractive optics. The imaging spectrometers are generally of a type that include an entrance aperture for admitting radiation over a range of wavelengths, a detector array, a primary reflective optic with optical power, a secondary reflective diffractive optic, and a tertiary reflective optic with optical power for collectively imaging the entrance aperture onto the detector array through a range of dispersed positions. One or more of the primary reflective optic, the secondary reflective diffractive optic, and the tertiary reflective optic can include a φ-polynomial optical surface with no axis of symmetry and represented by a function that depends on both a radial component and an azimuthal

公开(公告)号：US10444069B2

公开(公告)日：2019-10-15

申请号：US15579201

申请日：2016-06-07

Applicant: University of Rochester

Inventor： Jannick P. Rolland ,  Jacob Reimers

IPC: G01J3/28 ,  G01J3/02 ,  G01J3/18

Abstract: Expanded performance opportunities for imaging spectrometers are described using ϕ-polynomial freeform surfaces in reflective and diffractive optics. The imaging spectrometers are generally of a type that include an entrance aperture for admitting radiation over a range of wavelengths, a detector array, a primary reflective optic with optical power, a secondary reflective diffractive optic, and a tertiary reflective optic with optical power for collectively imaging the entrance aperture onto the detector array through a range of dispersed positions. One or more of the primary reflective optic, the secondary reflective diffractive optic, and the tertiary reflective optic can include a ϕ-polynomial optical surface with no axis of symmetry and represented by a function that depends on both a radial component and an azimuthal component.