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US 12,492,938 B2Granted
Hybrid reflective microscope objective
AssigneeThermo Electron Scientific Instruments LLC
InventorsYan Min, Francis J Deck
Life of this patent
Estimating the term…
Abstract
Provided are systems and methods related to hybrid reflective microscope objectives and lens systems used in a spectroscopy system. The objective lens system includes a primary aspheric mirror having a first R-value; and a secondary aspheric mirror having a second R-value smaller than the first R-value, where in the objective lens system has a working distance of at least 20 mm and a numerical aperture of 0.29-0.65, and wherein surfaces of the primary and secondary aspheric mirrors have a non-zero sixth order aspheric parameter.
Claims20
An objective lens system, comprising:
- a primary aspheric mirror having a first R-value;
- and
- a secondary aspheric mirror having a second R-value smaller than the first R-value, wherein the primary and secondary aspheric mirrors form a Schwarzchild structure having a working distance of at least 20 mm and a numerical aperture of 0.29-0.65, and wherein surfaces of the primary and secondary aspheric mirrors are defined by a series of aspheric parameters including a non-zero sixth order aspheric parameter.
Dependencies are inferred from the claim text.