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Patent News: Ricoh 75mm Lens For 1 inch Sensor

75mm F2.8 Lens image

Ricoh filled a patent of a 75mm Lens with F2.8 aperture for a 1″ sensor based camera, currently Ricoh doesn’t make any compact or mirror less camera with 1″ sensor and that clearly means Ricoh is can enter in 1″ sensor based compact products.

Do contribute a better translation if you can

Description, self-interpretation of the patent literature

  • Patent Publication No. 2016-61902
    • Published 2016.4.25
    • Filing date 2014.9.17
  • Example 1
    • f = 75.0mm
    • F = 2.83
    • 2ω = 12.2 degrees
  • Ricoh patents
    • [0002] been widely put into practical use a so-called “industrial cameras”, for example, are being developed such as an image input device for machine vision.
    • [0003] an imaging lens used in an image input device of machine vision, much variation in lens performance due to focusing, it is important that stable.
    • Feeding the front lens

See more patents by Ricoh

BTW : Do you know  Ricoh GR II is an excellent APS-C sensor based camera and available at $599 on B&H and Amazon.com

Ricoh Patent - IR Sensor For Accurate Auto Focus

Ricoh-Patent-sensor-imagePentax / Ricoh filed a patent to correct focus shift caused by infrared light. In the patent we can clearly see that Rioch is working on 2nd IR (infrared)  AF (Auto Focus) Sensor for correcting the Focus shift when the Phase AF sensor fails to do the correct Job in absence of visible light (In a situation when only IF is present).

Description, self-interpretation of the patent literature

  • Patent Publication No. 2015-172640
    • Published 2015.10.1
    • Filing date 2014.3.1
  • Ricoh patents
    • AF sensor has a spectral sensitivity in the visible light to infrared light
    • AE sensor has a spectral sensitivity in the visible light
    • IR sensor has a spectral sensitivity characteristics to infrared light
    • Based on the signal ratio of the AE sensor and the IR sensor, to correct the focal shift due to chromatic aberration of infrared light

See more Ricoh Patent

source – egami

Ricoh Patent - 60mm F2.8 Fullframe Macro Lens

Pentax-Fullframe-lens-paten

Latest Ricoh (Pentax is a brand name used by Ricoh Imaging Company) Patent information surfaced over the web, Ricoh/Pentax patent a 60mm F2.8 Fullframe Macro Lens with built-in optical IS.

Also see  – according to latest news / rumors – Pentax Full-Frame Coming on 2014

Continue reading Ricoh Patent – 60mm F2.8 Fullframe Macro Lens