40 Degree Projection Lens

© Optovise Ltd 2013

Six Element Projection lens

The design required that the projection lens had a full field of 40 degrees with an  object size of 40mm. The requirement was that the lens was telecentric in object  space, with no more than 7 elements in the system.  The final design comprised of six glass elements - all spherical with no aspheric  surfaces in the design. All criteria were met with the average MTF of 0.6 at 30  cycles/mm, distortion less than 1% and the chromatic shift corrected with 84um of  focal shift in the visible range.  40 Degree projection lens layout         40 Degree Projection lens MTF Plot
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