公开(公告)号：US3791737A

公开(公告)日：1974-02-12

申请号：US3791737D

申请日：1972-06-16

Applicant: JOHANSSON A

Inventor： JOHANSSON A

IPC: G01J3/18 ,  G01J3/40 ,  G01J3/12

CPC classification number: G01J3/18

Abstract: A spectrometer where spectral lines within a wide wavelength range with a high resolution can be focused at one fixed output slit by using a diffraction grating which consists of separate areas having different numbers of grooves per unit length, the grating being arranged to refract spectral lines in superimposition or in alignment with each other, the instrument being suitable for flame photometer determination of substances.

Abstract translation: 一种光谱仪，其中具有高分辨率的宽波长范围内的光谱线可以通过使用衍射光栅聚焦在一个固定的输出狭缝处，该衍射光栅由每单位长度具有不同数量的凹槽的分离区域组成，该光栅被布置成折射光谱线 叠加或相互对准，仪器适用于火焰光度计测定物质。