Patent ID: 9030733
Filing Date: 2015-05-12
Classification: G01N,G02B,H01S

Abstract:
1. A method comprising: spatially relaying a first radiation component having a first wavelength in a range from UV to FIR wavelengths and a second radiation component having a second wavelength different from the first radiation component and within a range from 1 nm to 150 nm, wherein said relaying comprises splitting or combining the first and second radiation components using an optical relaying device which comprises: (a) a transparent plate comprising a material which is transparent for the first radiation component and (b) anti-reflection coatings on both side surfaces thereof, wherein the anti-reflection coatings have multilayer structures, transmitting the first radiation component across the optical relaying device with predetermined incident and emergent angles, respectively, wherein said anti-reflection coatings are effective for the first radiation component at the incident and emergent angles, respectively, and reflecting the second radiation component at the optical relaying device with a predetermined reflection angle being equal to at least one of said incident and emergent angles, wherein the reflection angle is at least 75°, and the first and second radiation components are split from each other toward different directions or combined into a common beam path.