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it home reported on september 4 that technology media 91mobile published a blog post yesterday (september 3), digging into the list published by the world intellectual property office (wipo) and found that samsung has applied for a patent for a six-fold prism periscope camera zoom.

apple's quadruple reflective prism design

apple uses a quadruple reflective prism design on the iphone 15 pro max, while samsung has increased the similar technology to sextuple in its patent to enhance its technological competitiveness.

it home cited a patent description that among these 6 prisms, 3 are concave lenses (light bulges outward) and 3 are convex lenses (light is concave inward), and they are arranged alternately to allow the light to move in a zigzag shape.

this increases the distance the light travels (180mm to 7000mm with ois at longer focal lengths), thus improving zoom capabilities.

as mentioned in the patent application, the purpose of this design is to develop an optical imaging system that can achieve high resolution while making the camera module thinner. in other words, the lens stack must be designed to be small enough to fit inside the phone.