The article describes the current state of spectral endoscopic methods. Requirements to technical means are formulated and methods of their implementation are presented. Classification of spectral endoscopic devices is presented, prospects of application of tuneable acousto-optic filters as spectral elements in spectral endoscopy are noted. Examples of practical application of spectral endoscopy methods are presented for non-destructive testing and medical diagnostics. 1. Berci, G., Forde, K.A. History of endoscopy // Surgical Endoscopy, 2000, Vol. 14, # 1, pp. 5–15.
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• endoscopic diagnostics
• spectral filtration
• spectral visualisation
• imaging spectrometry
• three-dimensional endoscopic visualisation