Reflecting prism for optical resonant cavity, and optical resonant cavity and spectral measurement instrument thereof

Abstract

The present application discloses a reflecting prism for an optical resonant cavity, an optical resonant cavity and a spectral measurement instrument. Said optical resonant cavity has a sample measurement region, and said reflecting prism comprises a first surface for receiving light rays passing through said sample measurement region, a second surface for emitting light rays to said sample measurement region, and a third surface between said first surface and said second surface, said third surface for totally reflecting the light rays received from said first surface to said second surface. The reflective prism for the optical resonant cavity, the optical resonant cavity and the spectral measurement instrument provided by the present application can be favorable to the miniaturization of the reflecting prism of the optical resonant cavity, and thus help reduce the material absorption loss of light rays.

Dependencies are inferred from the claim text.