Ricoh filed patents for several lenses designed for cameras with 1″ sensor

Ricoh 75mm f:2.8 lens patent designed for 1 inch sensor camera
Ricoh filed several patents in Japan for 75mm f/2.8, 50mm f/2.4, 25mm f/1.8 and 35mm f/1.8 lenses designed for cameras with 1 inch sensor.

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