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Firmware Update

Canon New Patent - 300mm f/4

Canon applied for a patent about a telephoto lens 300mm F4. It realizes high-performance shake revision by using an electrooptic device.

Patent Details

  • Patent Publication No. 2011-27864
    • published 2011/02/10
    • filled 2009/07/23
  • Embodiment 1
    • focal distance f=294.00mm
    • Fno=4.14
    • angle of view 8.24 degrees
    • image circle 43.28mm
    • lens length 245.03mm
    • back focus 86.14mm
  • The camera shake:
    • The shake by a human is around 0.1-10Hz (low frequency).
    • The shake by a tripod is around 4-35Hz.
    • The shake by an in-vehicle camera is several Hz – around several hundred Hz (high frequency).
  • The conventional camera shake revision cannot revise a shake of the high frequency.
  • Because the shake revision revise a shake by mechanical movement.
  • The electro-optic effect supports movement of 100Hz or more kHz.
  • Canon’s patent:
    • It is revise a shake of the high frequency.
    • It adopts an electrooptic device.
    • The device changes a refractive index of the lens by an electric field.

Via Egami

Canon - 2,543 New Patents In 2010

This Marks The First Time A Japanese Company Exceeds 2,500 Patents In A Single Year

LAKE SUCCESS, N.Y., February 7, 2011 – Canon U.S.A., Inc., a leader in digital imaging, today announced its parent company, Canon Inc., registered a company record of 2,543 new patents in 2010, ranking fourth overall based on weekly patent counts issued by United States Patent and Trademark Office. Marking the 18th consecutive year the Company has ranked among the top five patent holders, the 2,543 patents received in 2010 represent a 15 percent increase from 2009, bringing the Company’s total number of patents since 2000 to more than 22,500.

“2010 was an exciting and groundbreaking year for Canon as it marked the highest number of patents the Company has ever received in a single year,” said Seymour Liebman, executive vice president, chief administrative officer and general counsel, Canon U.S.A. “These figures are a true testament to Canon’s long-standing legacy and commitment to innovation. Each year, Canon invests nearly ten percent of global revenue into research and development so we are able to continually enhance our current products and develop new technologies that keep us on the cutting edge of innovation.”

The patent portfolio of Canon has contributed to the successful introduction of several products in the marketplace today. The Canon PIXMA MG8120 and MG6120 introduced a new light guidance system – a first for personal desktop printers and incorporated Canon’s Full High Definition (HD) Movie Print1 mode. The Canon imagePRESS C7010VP, which was designed incorporating customer feedback, represents the next installment of the Company’s flagship imagePRESS lineup for the production and graphic arts markets. Additionally, Canon brought to market the CXDI-70C Wireless Digital Radiography (DR) detector which is the Company’s first wireless DR system.