Auteur principal			Co-auteurs(s)
Nom :	Leon Magiera		Nom :	Josef Boehm
Courriel :	Leon.Magiera@pwr.wroc.pl		Courriel :	nojo.boehm@pgv.at
Institution ou compagnie:	Wroclaw University of Technology		Nom :
Département:			Courriel :
Ville :	Wroclaw		Nom :
État/Province :			Courriel :
Pays :	Poland		Nom :
Type de présentation:	Conférence :  25 minutes.		Courriel :
Conférence et numéro :	Derive & TI-CAS  ,    Numéro : D31		Horaire :   Local :	jeudi, 16h00   1350
Site Internet :
Titre de la communication :	Teaching geometrical Optics with Derive / Paraxial Approximation
Résumé de la communication :
Tracing a ray of light through an optical system consists on calculating the changes in ray slope angle caused by reflection or refraction, and the changes in ray height on transition from one surface to the next. The paraxial region of an optical system is a threadlike region about the optical axis which is so small that all the angles made by the rays (i.e., the slope angles and the angles of incidence and refraction) may be set equal to their sines and tangents. Under this approximation (first order optics) ray tracing formulae are very simple. It will be demonstrated how to apply these simple formulae to calculate the important optical quantities (focal length, back focal length, aperture stop, entrance and exit pupil, size and image position ect.) and even for complicated multi-surfaces optical systems. Special cases of thick and thin lenses are considered and also multilens optical systems, in particular cemented and separated doublets.