Category Archives: Patents

Another Pentax 70-300mm f/4.5-5.6 lens patent field in Japan

Rumors for a new HD Pentax-D FA 70-300mm f/4.5-5.6 ED PLM WR SR lens have been going on for a while – see also the latest Pentax lens roadmap that indicates a similar zoom lens: A corresponding 70-300mm lens was already filed by Ricoh back in 2020. Another 70-300mm f/4.5-5.6 lens patent was just listed […]

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Ricoh has filed a patent for a 24-90mm f/4 full-frame DSLR lens

Ricoh has filed a patent for a 24-90mm f/4 full-frame DSLR lens. Pentax already had a 24-90mm f/3.5-4.5 SMC FA IF AL lens for K-mount: Here are the details from the patent application:

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New: Ricoh patent application for 21mm f/2.4, 18mm f/2.4, 16mm f/2.4, and 14mm f/2.4 full-frame lenses

Ricoh has a new patent application for multiple full-frame lenses including 21mm f/2.4, 18mm f/2.4, 16mm f/2.4, and 14mm f/2.4:

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Ricoh filed a patent for a 18-100mm f/2.8 APS-C lens

Ricoh has filed a patent for a 18-100mm f/2.8 APS-C lens (28-150mm equivalent) – here are the details:

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Ricoh filed a patent for a 100-300mm f/2.8-4 SR full-frame mirrorless lens

A few days ago Ricoh filed a patent application in Japan for several full-frame mirrorless telephoto lenses: 70-300mm f/4.5-5.6 100-400mm f/4.5-5.6 100-300mm f/2.8-4 A month ago another Ricoh patent also described sumular mirrorless lenses: 70-400mm 70-300mm The third 150-600mm lens described in the patent is for DSLR cameras (equipped with image stabilization)

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Canon patents AA filter image sensor shift simulator to minimize moiré, a technology used by Pentax for years

It seems that Canon filed a patent application for technology that is using image sensor shift to reduce the need for an AA filter:

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Ricoh filed two new patents for Pentax APS-C DSLR lenses

     Ricoh filed two new patents for APS-C DSLR lenses:

Also posted in Pentax lenses | 3 Comments