Refractive Elements in Spectrographs

Hopkins, George W.

HP Development Company

关键词: spectrograph;    gas monitors;    Raman;    diffraction grating;   

RP-ID  :  HPL-98-115

学科分类：计算机科学（综合）

美国|英语

来源: HP Labs

【 摘 要 】

A spectrograph design was needed for an application in medical optics. Requirements for resolution were modest, cost was to be minimized, and every photon was precious. The initial design used a concave, aberration-corrected, holographically-recorded, diffraction grating. This design costs too much and collected too few of the precious photons. Several design forms, which use refractive optics with a planar diffraction grating, were investigated. The design that was chosen and built uses two aspheric glass lenses, one for collimating and one for focusing, together with a planar diffraction grating. 10 Pages