Category Archives: Patents

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

By admin | Published: May 18, 2021

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

Posted in Patents | 3 Comments

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:

Also posted in Pentax lenses | 3 Comments

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?):

Posted in Patents | 6 Comments

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:

Also posted in Pentax lenses | Tagged , | 4 Comments

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:

Also posted in Pentax lenses | Tagged , | 16 Comments

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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