Main presenter
Co-presenter(s)
Name :
Leon Magiera
Name:
Josef Boehm
E-mail:
Leon.Magiera@pwr.wroc.pl
E-mail:
nojo.boehm@pgv.at
Institution or
Company:
Wroclaw University of Technology
Name:
Department:
E-mail:
City:
Wroclaw
Name:
State/Province:
E-mail:
Country:
Poland
Name:
Type of
presentation:
Lecture : 25 minutes.
E-mail:
Conference
strand and number:
Derive & TI-CAS ,
Number:
D31
Schedule:
Room:
Thursday, 16h00
1350
Related website:
Title of
presentation:
Teaching geometrical Optics with Derive / Paraxial Approximation
Abstract:
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.