Category Archives: Patents

Ricoh files a patent for a Pentax 100-300mm f/4 full frame lens

Ricoh recently filed a patent in a Japan for a 100-300mm f/4 full frame lens that is most likely designed for the Pentax K-1 DSLR camera. Here are the details:

Posted in Patents | Tagged | 4 Comments

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

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.

Also posted in Pentax lenses | 16 Comments

Ricoh files a patent for a 200mm f/2.8 full frame lens (for Pentax K-1)

Ricoh has a new patent application filed in Japan for a 200mm f/2.8 ED IF DC full frame lens (most likely designed for the Pentax K-1):

Also posted in Pentax lenses | 12 Comments

The latest Ricoh patents

The latest Ricoh patents from Japan: → Ricoh has field a new patent applications in Japan for a lens with image stabilization and built-in low pass (AA) filter.

Posted in Patents | Leave a comment

Ricoh’s patents for a better visible AF patch

Ricoh filed a patent in Japan for a better visible AF patch / focusing points. See the before and after pictures from the patent application: Via Egami

Posted in Patents | Leave a comment