Optical systems and optical measuring apparatus
AssigneeYokogawa Electric Corporation
InventorTakeshi Sawada
Life of this patent
Estimating the term…
Abstract
Provided is an optical system including: a first linear polarizer of a reflection type which receives linearly polarized light transmitted through a sample; and a switching unit which controls a polarization direction of the first linear polarizer, to switch between causing the linearly polarized light received by the first linear polarizer to be transmitted and reflected, where the number of times that light transmitted through the first linear polarizer is transmitted through the sample before reaching an optical receiver is different from the number of times that light reflected by the first linear polarizer is transmitted through the sample before reaching the optical receiver.
Claims18
An optical system comprising:
- at least one roof mirror for twice reflecting linearly polarized light transmitted through a sample, back through the sample;
- a first linear polarizer of a reflection type which receives the reflected linearly polarized light reflected back through a sample;
- and
- a switching unit which controls a polarization direction of the first linear polarizer, to switch between causing the reflected linearly polarized light received by the first linear polarizer after being reflected back through the sample to be reflected, wherein
- a quantity of times that light transmitted through the first linear polarizer is transmitted through the sample before reaching an optical receiver is different from a quantity of times that light reflected by the first linear polarizer is transmitted through the sample before reaching the optical receiver.
Dependencies are inferred from the claim text.