Canon’s patent for folding optical technology first exposed, design for new EVF
Recently, Canon has made a report on the structure design of electronic viewfinders for mirrorless cameras. The patent was exposed in the relevant department in Japan. It is reported that the EVF patent applies folding optical technology.
This project with the patent number 2020-95073A points out a method of using folding optical technology to create an electronic viewfinder. This technology was previously commonly used in smartphone lens manufacturing and other usage scenarios where the optical path would be longer than the device size. Prism binoculars are a good example of applying folding optics technology.
In this patent, the EVF will maximize light reflection through a polarizer. This patent is likely to be put into production in the near future and become a product that consumers can buy. Currently, camera viewfinders are mainly divided into optical viewfinders, electronic viewfinders, and photoelectric hybrid viewfinders. The electronic viewfinder uses an image processor to convert the image on the sensor into an electrical signal and display it on a miniature display screen. It has the characteristics of wide field of view and rich display information. The application of folding optical technology in the electronic viewfinder will bring users a better photography experience.
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