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Entry  Thu Jul 14 20:24:32 2011, Nicole, Summary, SUS, Photosensor Head Lessons Photosensor_Head.jpg
    Reply  Fri Jul 15 01:11:21 2011, Koji, Summary, SUS, Photosensor Head Lessons 
       Reply  Fri Jul 15 14:23:30 2011, Nicole, Summary, SUS, Photosensor Head Lessons 
    Reply  Fri Jul 15 08:48:36 2011, Jamie, Summary, SUS, Photosensor Head Lessons 
       Reply  Fri Jul 15 14:29:30 2011, Nicole, Summary, SUS, Photosensor Head Lessons 
Message ID: 4974     Entry time: Fri Jul 15 14:23:30 2011     In reply to: 4970
Author: Nicole 
Type: Summary 
Category: SUS 
Subject: Photosensor Head Lessons 

 

 Ah! I see! Thank you!

I should put the LEDs and photodiodes closer together so that more of the reflected light falls on the photodiodes and the photodiodes have a higher response.

Also the reflectivity of the mirror will be optimized if the incident light is normal to the mirror surface. We will be setting up the photosensor and mirror so that the LEDs

emit light normal to the mirror surfaceDuring displacement, this light may be slightly off-normal but still close to normal incidence. We want the photodiodes to be close to the LED since we want

them to detect light that is close to the path of normal incidence (small angles of reflection). [Thanks to Jenne for helping me figure this one out!]

 

Thank you for the suggestion ^___^

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