Young & Thompson
Wide-angle projection lens and projection display device using the same
A first lens group including two aspherical lenses, a second lens group consisting of three negative meniscus lenses, each negative meniscus lens having a convex surface facing the enlargement side, a third lens group having a negative refractive power and including at least one cemented lens, and a fourth lens group having a positive refractive power and including at least two cemented lenses and one aspherical lens are arranged in this order from the enlargement side. Predetermined conditional expressions are satisfied.
FUJIFILM Corporation
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G02B G02B G02B G02B
inventional inventional inventional inventional
Hiroshi
Yamada