Novel, lightweight, and low-cost illumination system for line-scan cameras

Autor:	Simon C. Webster, H. T. Brown
Rok vydání:	1992
Předmět:	Optical fiber Materials science business.industry General Engineering Physics::Optics Ranging Fresnel lens Atomic and Molecular Physics and Optics Critical illumination Numerical aperture law.invention Optics Planar law Köhler illumination business Diffuser (optics)
Zdroj:	Optical Engineering. 31:1654
ISSN:	0091-3286
DOI:	10.1117/12.58845
Popis:	A novel optical system designed as an illuminator for line-scan cameras is described. This system produces a linear illumination pattern on a planar surface and uses plastic Fresnel lenses to reduce the system cost and dimensions. A custom-made optical fiber array, which acts as a 1-D diffuser, forms part of a high numerical aperture projection system providing a half-angle cone of illumination in excess of 35 deg. This wide range of incident angles allows the imaging of surfaces ranging from near-specular to Lambertian diffusers.
Databáze:	OpenAIRE
Externí odkaz:	https://explore.openaire.eu/search/publication?articleId=doi_________::b8f50403cca4f4b890978a61a1cab7ee https://doi.org/10.1117/12.58845 Zobrazit plný text záznamu