Canon recently applied for a new patent for the production of curved sensors.
Technical patents and research results related to curved sensors have been published one after another, and Canon recently applied for a new patent for the production of curved sensors.
Canon surface sensor Production patent
In this patent, Canon describes a method of bending a two-layer stacked sensor during the production process: heat the resin to expand it, thereby squeezing the sensor above the resin, The sensor is bent into a curved surface. Considering that the current single-layer curved sensor is not yet mature, Canon’s patent may only be a protective patent.
CEA-Leti Curved CMOS is exhibited
When light passes through the lens, it will converge into a cone. Because the distance between the edge and center of the flat sensor and the lens is different, we need to use aspheric lenses to compensate for the edge imaging to ensure the edge and center The focus is the same, and the associated dispersion and phase difference also need to be compensated by fluorite lenses. Therefore, the use of curved sensors can greatly reduce the complexity of the lens structure, and the problem of vignetting caused by edge loss will also disappear.
Sony’s curved surface Sensor paper
Editor’s point of view:
Single-layer curved surface sensor has not yet been applied to the market on a large scale, Canon has already begun to apply for a patent for stacked curved surface sensor, I have to say that Canon has developed new technologies The speed is quite fast. Since the curved sensor has many advantages, I believe that various manufacturers will not leave behind the research in this area, and hope that they can solve the technical problems as soon as possible, so that the camera can have excellent imaging without the need for high-cost traditional lenses.
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