Composite lens employing the BR optical element
Canon Develops New Camera-Lens Optical Element That Enables Extremely High Levels Of Chromatic Aberration Correction
MELVILLE, N.Y, August 27, 2015 – Canon U.S.A., Inc., a leader in digital imaging solutions, today announced that its parent company, Canon Inc., has developed Blue Spectrum Refractive (BR), a new optical element for use in camera lenses that corrects chromatic aberrations at an extremely high level to achieve superb imaging performance.
Canon BR Lens Construction and Fundamentals
The new Canon-developed BR optical element offers characteristics that significantly refract blue light, which lies within the short-wavelength range, to achieve impressive levels of chromatic aberration correction for outstanding imaging performance. The BR optical element, positioned between two glass lens elements to create a BR lens, will make its debut in the new EF 35mm f/1.4L II USM wide-angle fixed-focal-length lens, which is scheduled to go on sale in October 2015.
Canon EF 35mm f/1.4L II USM
Natural light, or white light, comprises a spectrum of wavelengths, or colors, each of which realizes a unique refractive index when passing through a lens. As all colors do not converge on the same point, this disparity causes chromatic aberrations, or color fringing, to occur in an image.
Cross section of the BR lens and the raw material used to make the BR optical element (organic optical material)
Canon develops optical elements by reviewing organic optical materials, beginning with the design of molecular structures, with the aim of achieving optimal chromatic aberration correction that suppresses color fringing. With the successful development of the BR optical element, which offers unique light-dispersion characteristics that significantly refract blue light-a wavelength that, until now, had proven particularly difficult to converge to a specific focal point-Canon is able to develop lenses that result in outstanding imaging performance by correcting chromatic aberrations at an exceptionally high level.
About Canon U.S.A., Inc.
Canon U.S.A., Inc., is a leading provider of consumer, business-to-business, and industrial digital imaging solutions to the United States and to Latin America and the Caribbean (excluding Mexico) markets. With approximately $31 billion in global revenue, its parent company, Canon Inc. (NYSE:CAJ), ranks third overall in U.S. patents granted in 2014† and is one of Fortune Magazine’s World’s Most Admired Companies in 2015. Canon U.S.A. is committed to the highest level of customer satisfaction and loyalty, providing 100 percent U.S.-based consumer service and support for all of the products it distributes. Canon U.S.A. is dedicated to its Kyosei philosophy of social and environmental responsibility. In 2014, the Canon Americas Headquarters secured LEED® Gold certification, a recognition for the design, construction, operations and maintenance of high-performance green buildings. To keep apprised of the latest news from Canon U.S.A., sign up for the Company’s RSS news feed by visiting www.usa.canon.com/rss and follow us on Twitter @CanonUSA. For media inquiries, please contact pr@cusa.canon.com.
† Based on weekly patent counts issued by United States Patent and Trademark Office.
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