Richard CanonNews / Thursday, February 15, 2018 / Categories: Canon Patents Canon Patent application for Improved flare control for DO elements One of Canon's many lens innovations, DO elements starting off with the 70-300 DO lens has been undergoing continual improvements. This is a possible improvement as Canon looks to improve the DO element's abilities in the infrared band to reduce flare. An image pickup apparatus for the long wavelength band of 8~14μm uses light (hereinafter, the far referred to as long wavelength infrared region). Therefore, if the diffraction efficiency of the diffractive optical element with respect to a specific diffraction order is low in a part of the far-infrared region, diffracted light having a diffraction order unnecessary for imaging can be generated. This is not preferable because it causes flare. US Patent Application 20180045975 Previous Article Mirrorless UWA APS-C Zoom Patent Application Next Article Canon Patent Application - Dual Pixel Sensor Improvements Print 5513 Leave a comment Name: Please enter a name. Email: Please enter an email address. Please enter a valid email address. Comment: Please enter comment. I agree This form collects your name, email, IP address and content so that we can keep track of the comments placed on the website. For more info check our Privacy Policy and Terms Of Use where you will get more info on where, how and why we store your data. You must read and accept this rules. Add comment