Category Archives: Patents

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

By admin | Published: September 24, 2020

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

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New: Ricoh 23mm and 28mm f/2.8 APS-C lens patent for a compact camera (new Ricoh GR maybe?).

By admin | Published: September 10, 2020

Ricoh has a new patent for a 23mm and 28mm f/2.8 APS-C lenses designed for a compact camera (new Ricoh GR maybe?):

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Pentax DFA 70-300mm f/4.5-5.6 SR lens patent

By admin | Published: June 19, 2020

Ricoh has a patent (P2018-224783) for what appears to be a new Pentax DFA 70-300mm f/4.5-5.6 SR or similar:

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The patent for the Pentax HD FA 50mm f/1.4 SDM AW lens was filed by Ricoh

By admin | Published: August 24, 2019

The patent for the Pentax HD FA 50mm f/1.4 SDM AW lens was filed in Japan by Ricoh – see patent application 2019-139158. It has been widely reported that the new Pentax 50mm f/1.4 lens was designed by Tokina and it is a copy of the Tokina Opera 50mm f/1.4 FF lens:

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Ricoh OVF/EVF switchable hybrid viewfinder patent

By admin | Published: October 9, 2018

Ricoh has a new patent 2018-151588 for an optical (OVF) / electronic (EVF) switchable hybrid viewfinder:

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Ricoh (Pentax) filed a patent for a DSLR cameras focusing screen

By admin | Published: October 2, 2018

Ricoh (Pentax) filed a patent for a DSLR cameras focusing screen (JP 2018-151549):

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Ricoh has a new patent for a Pentax DA* 11-18mm f/2.8 lens

By admin | Published: June 21, 2018

Ricoh has filed a patent in Japan for what appears to be a new Pentax DA* 11-18mm f/2.8 DSLR lens. The patent was published today (June 21st) but it was first registered back in December 2016. Tokina already has an 11-16mm f/2.8 while Pentax currently has the 15-30mm f/2.8 lens. Here is one of the calculations […]

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