Objective lens for a free-space photonic switching system

Details Objective lens for a free-space photonic switching system Objective lens for a free-space photonic switching system

G - Physics

02

B

G02B 9/18 (2006.01) G02B 13/22 (2006.01) H04Q 3/52 (2006.01)

Patent

CA 2101309

An objective lens for a free-space photonic switching system is disclosed. The objective lens is utilized to change a collimated array of beams into an array of spots which will focus on the array of spatial light modulating elements (S-SEEDs, for example). The requirements for the lens (low f-number, field of view, etc.), result in a lens which includes an external stop, positive doublet, a positive (e.g., plano-convex) lens and a negative (e.g., field flattener) lens, the latter pair of lenses being separated by a predetermined distance d.

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