Physikdidaktik, Fakultät 2—Pädagogische Hochschule Weingarten, college of Education, Kirchplatz 2, 88250 Weingarten, Germany (saschagrusche


You are watching: What is the purpose of the slit in the spectroscope

Sascha Grusche, "Basic slot spectroscope reveals three-dimensional scenes with diagonal slices of hyperspectral cubes," Appl. Opt. 53, 4594-4603 (2014)
Previously assigned OCIS codesImaging solution (110.0110)Multispectral and hyperspectral imaging (110.4234)Spectroscopy (300.0300)Spectra (300.6170)Vision, color, and visual optics (330.0330)Vision - binocular and also stereopsis (330.1400)
HistoryOriginal Manuscript: march 25, 2014Revised Manuscript: may 29, 2014Manuscript Accepted: may 30, 2014

Abstract

A basic slit spectroscope is usually held close to the eye to create the spectrum of a solitary slit view. However, a an ext distant viewer may have actually multiple slit views at once, an effect of dispersion that has been overlooked. Investigations of spectroscopic image geometry expose that the maximum field of view equals the dispersion angle. Spectrally decoded camera-obscura projections compose three-dimensional photos of a scene, emulating a Benton hologram. The images represent diagonal part of a hyperspectral datacube. Consequently, the spectroscope have the right to be used as an autostereoscopic display and also for a fourth an approach of hyperspectral data acquisition, called spatiospectral scanning.

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