Hi All,   
      
   I am working on a project: we have a light sensor with only around 40 degrees   
   field of view. Our goal is to measure the strength of the sunlight without   
   introducing too much of a bias based on the time of the day - when the sun   
   shines at a different    
   angle. We want to keep the sensor stationary.   
      
   I was thinking about using a set of lenses to change the angle of the rays but   
   I am stuck, since one lens would only focus the parallel rays of different   
   angles to different points in the focal plane - and our sensor has a fairly   
   small surface area.   
      
   Some of the diffusers I have found were only changing the angles with up to 10   
   degrees which is not enough, since we want to measure from -75 to 75 degrees.   
      
   Another concern is to find a solution which doesn't filter out much of the   
   light spectrum.   
      
   Does anyone have any ideas on how to solve this challenge?    
      
   Thank you in advance!   
      
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