| 摘要 |
FIELD: optical spectral instrumentation. SUBSTANCE: invention is meant for generation and registration of aomic and molecular spectra to conduct various spectroscopic studies, for qualitative and quantitative analysis in interference spectrorefractometry and other tasks in spectrum region 200-1000 nm. Spectrograph includes concave diffraction grating, input spectral slit arranged on Rouland circle with three pairs of knives placed in one plane and moved apart in symmetry with independent adjustment of opening width which butt joined surfaces are guides of longitudinal movement of knives. There is cassette provided with two dual pulling mechanisms to move diaphragm and film. Base of cassette has two concentric grooves. Outer groove matches focal plane, inner groove carries diaphragm with three grooves located in height flush to knives of input slit displaced over horizontal line relative to each other by more than length of one slit. EFFECT: expanded application field. |
