Dispersive element, spectrometer and method to spectrally separate wavelengths of light incident on a dispersive element

摘要

A dispersive element is disclosed which is designed to receive incident light (1) and disperse the incident light (1) into multiple spatially separated wavelengths of light. The dispersive body (DB) comprises a collimation cavity (COLL) to collimate the incident light (1), at least two optical interfaces (PRIS) to receive and disperse the collimated light (2) and a collection cavity (CLCT) to collect the dispersed light (3) from the at least two dispersive interfaces (op1, op2) and to focus the collected light (4).

主权项

1. A dispersive element to receive incident light and disperse the incident light into multiple spatially separated wavelengths of light, having a dispersive body made of an optically transparent material and comprising:
a collimation cavity to collimate the incident light; at least two optical interfaces to receive and disperse the collimated light into multiple spatially separated wavelengths of light; and a collection cavity to collect the dispersed light from the at least two dispersive interfaces and to focus the collected light, wherein the collimation cavity, the collection cavity and the least two optical interfaces are each comprised by the dispersive body and filled with a material of lower index of refraction compared to an index of refraction of the dispersive body.