Trivia Question

Who sings the theme song for the “Big Bang Theory”?(a) Numeriklab(b) Ramin Djawadi(c) Justin Bieber(d) Barenaked Ladies(e) Grant Geissman

Trivia Question

Who sings the theme song for the “Big Bang Theory”?(a) Numeriklab(b) Ramin Djawadi(c) Justin Bieber(d) Barenaked Ladies(e) Grant Geissman

Trivia Question

Who sings the theme song for the “Big Bang Theory”?(a) Numeriklab(b) Ramin Djawadi(c) Justin Bieber(d) Barenaked Ladies(e) Grant Geissman

Trivia Question

Who sings the theme song for the “Big Bang Theory”?(a) NCIS - Numeriklab(b) Ramin Djawadi - Game of Thrones (composer)(c) Justin Bieber – The Karate Kid(d) Barenaked Ladies – BIG BAND THEORY(e) Grant Geissman wrote Two and ½ Men theme

Fig 5.1

Fig 5.6

Refraction at a Surface

Spherical Aberration and Paraxial Approximation

Week2-spherical_aberration.avi

NOTE:

R>0 if the REFRACTED beam through that surface is on the SAME SIDE as the radius of curvature for that surface.

R<0 if the REFRACTED beam through that surface is on the OPPOSITE side of the radius of curvature for that surface

Table 5.2

Sign conventions for lens formulas

INCOMING light to optic defines the POSITIVE side for sign convention for So

OUTGOING light from optic defines the POSITIVE side for sign convention of Si

f>0 represents a CONVERGING lens

f<0 represents a DIVERGING lens

Ray Tracing/ Magnification

Converging Lens/ Diverging Lens

http://www.phys.hawaii.edu/~teb/java/ntnujava/Lens/lens_e.html

Longitudinal versus Transverse Magnification

Image distorted since magnification in axial direction not same as transverse direction

Inversion of image from a lens

Inversion with Mirrors

The ‘thin lens’ limit of ray tracing is only on simple way of analyzing a system of optical components.

Phys 418 – Imaging covers ‘thick lenses’, a matrix approach to ray tracing, and computerized ray tracing.

Fisheye Lens ray tracing from Beam4

http://www.stellarsoftware.com/

Cell Phone lens – Note non-spherical surfaces

Fig 5.56, Fig 5.57

Examples of reflecting prisms. What are they used for?

http://www.phy.ntnu.edu.tw/ntnujava/index.php?topic=49

Link for animation of total internal reflection

Another link for animation of total internal reflection

http://www.phy.ntnu.edu.tw/ntnujava/index.php?topic=16

Fiber Optics

Endoscopy

Cartoon of image of blood vessel on end of fiber optic bundle

Imaging quality determined by

• Amount of light coupled into fibers

• Size of fibers

Smaller fibers give Better Resolution

Images Distorted due to Resolution

Medical Colonoscope

Stomach Images and Colon Polyps

StomachColon Polyps

Fiber Communications

Different Modes travel at different effective speeds through a fiber

Intermodal Dispersion ‘spreads out’ digital optical pulses in a fiber