1. Not finding help here? Sign up for a free 30min tutor trial with Chegg Tutors
    Dismiss Notice
Dismiss Notice
Join Physics Forums Today!
The friendliest, high quality science and math community on the planet! Everyone who loves science is here!

Lens and sensor setup

  1. Aug 11, 2004 #1
    im in a slight fix.
    i am presently using a light sensor. i was asked to use a lens along with it recently. is it because the obect i am going to sense is magnified by the lens so that sensor can detect it easily?

    but, lets take the situation where a real image is formed because of the lens. Dont we need a screen in this case to project the image, for the sensor to view it? or is it that the sensor doesnt need a projected image.


    lets imagine my sensor is a transmitter-detector led pair at an acute angle.
    can a light sensor detect the converging(or diverging) rays from the lens, or do i require a proper projected image for sensing.

    waiting for a reply.
     
  2. jcsd
Know someone interested in this topic? Share this thread via Reddit, Google+, Twitter, or Facebook

Can you help with the solution or looking for help too?
Draft saved Draft deleted