angles

def angles (   self,   theta,   lam   ) Definition at line 1214 of file general_optics.py. 01214 : 01215 #return angle info for incoming and outgoing angles in degrees (for user convenience) 01216 if theta<0: 01217 sgn=-1 01218 else: 01219 sgn=1 01220 gratparm=self.order*lam*self.pitch*sgn 01221 littrow=asin(gratparm/2.0) 01222 phi=(((theta + math.pi/2.0) % math.pi ) - math.pi/2.0) #always wrap to front of grating! 01223 beta0=asin(gratparm-sin(phi)) 01224 self.parafocus_scale=math.cos(phi)/math.cos(beta0) #angular magnification along x 01225 #print "grating angles: ", lam, theta/deg, littrow/deg, beta0/deg 01226 return (littrow, beta0) 01227 def __str__(self):

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