Jm. Sasian et al., DESIGN, ASSEMBLY, AND TESTING OF AN OBJECTIVE LENS FOR A FREE-SPACE PHOTONIC SWITCHING-SYSTEM, Optical engineering, 32(8), 1993, pp. 1871-1878
The design, assembly, and testing details of an objective lens used to
image ar array of 4096 beams are discussed. The main characteristics
of the lens are a 15-mm focal length, a speed of f/1.5, diffraction-li
mited quality, telecentricity, f-sin(theta) mapping, an external stop,
and a simplicity of fabrication.