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Entry  Wed Feb 6 20:19:52 2013, Manasa, Update, Optics, G&H and LaserOptik mirrors 
    Reply  Thu Feb 7 14:10:25 2013, Manasa, Update, Optics, LaserOptik - AR Reflectivity - Bad data SN6_R.pngSN6_R.png
       Reply  Fri Feb 8 21:14:52 2013, Manasa, Update, Optics, G&H - AR Reflectivity  pr2.png27_1044419003.bmp
          Reply  Fri Feb 8 22:49:31 2013, Koji, Update, Optics, G&H - AR Reflectivity  
             Reply  Fri Feb 8 23:04:40 2013, Manasa, Update, Optics, G&H - AR Reflectivity  
          Reply  Sat Feb 9 19:34:34 2013, rana, Update, Optics, G&H - AR Reflectivity  
          Reply  Mon Feb 11 19:55:47 2013, Manasa, Update, Optics, G&H - AR Reflectivity  
             Reply  Wed Feb 13 09:28:56 2013, Steve, Update, Optics, G&H - HR plots 
Message ID: 8047     Entry time: Fri Feb 8 23:04:40 2013     In reply to: 8046
Author: Manasa 
Type: Update 
Category: Optics 
Subject: G&H - AR Reflectivity  

Quote:

D = 2 d Tan(\phi) Cos(\theta), where \phi = ArcSin(Sin(\theta) * n)

\theta is the angle of incidence. For a small \theta, D is propotional to \theta.

n1Sin(\theta1) = n2 Sin(\theta2)

So it should be

\phi = ArcSin(Sin(\theta) / n 

I did check the reflected images for larger angles of incidence, about 20 deg and visibly (on the IR card) I did not see much change in the separation. But I will check it with the camera again to confirm on that.

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