Two new Ricoh patents for improved live view and random pattern focusing screen

Two new Ricoh patent applications were filed in Japan:

Ricoh patent to improve live view image quality and reduce flickering
The first Ricoh patent is to improve live view image quality and reduce flickering.

Ricoh random pattern focusing screen patent

The second patent is for a random pattern focusing screen  – on the left you can see a schematic diagram showing moire on a general focusing screen, on the right you see a focusing screen example based on the new patent – there is no moire. Here is the translated description of the patent:

Focusing screen of a single-lens reflex are often those who have a regular uneven, moire and diffraction or the like occurs, it gives the viewfinder image with a sense of discomfort to the user. So it can also be regarded as the focus by the occurrence of moire, personally to moire of OVF image has been helped. However, depending on the frequency of the subject because there is also a possibility that even if moire occurs not Jasupin, would not be better to not. By the way it will be used peaking in EVF is good, but it also may be displayed when not Jasupin, require extra attention, because would not be mistaken as Jasupin to the photographer.

Ricoh patent applications are focusing screen utilizing the randomness obtained by chemically or physically alter the material.

This entry was posted in Patents. Bookmark the permalink. Trackbacks are closed, but you can post a comment.
  • TinusVerdino

    They are talking about peaking the EVF. Is Ricoh working on a hybrid VF? You missed a part:

    Ricoh patent applications are focusing screen utilizing the randomness obtained by chemically or physically alter the material.
    Pentax full-size SLR viewfinder has become fun.

    • I thought the Pentax reference was just added by the admin of Egami.

      • TinusVerdino

        Wasn’t the entire last paragraph?

        • probably, but the rest of the paragraph helps understand the patent, the last sentence is just speculation

          • TinusVerdino

            But it may be an educated guess, and this is a rumor site isn’t it.

          • Kunzite

            A rumor site which makes up things or propagates made-up things is not very useful, IMO.
            And of course, just because Ricoh is filling patents about both flicker-free Live View and a new type of focusing matte screen – both features being present in today’s DSLRs – this doesn’t give any indication of a hybrid viewfinder. Neither does the quoted reference.

          • TinusVerdino

            their you go again with your limited imagination :p

          • Kunzite

            There you go again, preferring lies to the truth.

          • TinusVerdino

            You see lies where there are none. That is a disease.

          • Kunzite

            I’ll stop feeding the troll. Bye.

          • TinusVerdino

            I am not a troll, you are an idiot

          • Zos Xavius

            But they have already patented a hybrid viewfinder haven’t they? At the very least they have their own transparent mirror technology.

          • Kunzite

            I’m not sure that was a “hybrid viewfinder” per se, or a method of displaying additional information in an optical viewfinder.

            However, what I’m saying is that neither of these two patents are hinting at a hybrid viewfinder. The first is general (can be applied to Live View on either back LCD or an electronic viewfinder) and the later is specific to OVFs.

      • Kunzite

        Sure, Ricoh Imaging would not needlessly link a patent to a specific camera, or format.

  • Back to top