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US 4,441,814 AGranted
Spectrograph providing spectral reference marks
OwnerWilliam T. Buchananinventor
Life of this patent
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OwnerWilliam T. Buchananinventor
Estimating the term…
A slitless spectrograph simultaneously records spectra of transient or moving light sources along with spectral references marks positioned alongside the spectra for calibration of unknown spectral lines. The reference marks are provided by groups of optical components which cause undispersed light from the unknown source to be focused on a film above or below the spectrum. The angles at which the light beams creating the references marks strike the grating of the spectrograph are specifically selected such that the rate of movement of the reference marks caused by a change in the incident angle of light from the light source into the spectrograph is related to the rate of change of the position of dispersed light which falls at the position of the reference mark when the spectrograph is precisely aimed at the light source.
In a spectrograph including means for dispersing a first beam of light from a light source into spectral components along an axis of dispersion and means for focusing and recording said spectral components, the improvement comprising:
A method of recording and calibrating the spectrum of an unknown light source, comprising the steps of:
In a slitless spectrograph including means for dispersing a first beam of light from a light source comprising a plurality of wavelengths into spectral components by wavelength along an axis of dispersion, and means for focusing and recording said spectral components, the improvement comprising:
A spectrograph comprising:
Dependencies are inferred from the claim text.