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An infrared-transmitting polymer based on common low-cost materials may lead to low-cost night-vision lenses that retain focus while imaging at variable distances. The polymer, developed by researchers from the University of Tsukuba, keeps its shape after stretching.
Designing conventional infrared night-vision lenses capable of easily changing focus from one position to another is typically difficult and costly. Without fabricating lenses to feature variable-focus capability, details that are important to capturing and understanding an image can be lost. Using a flexible polymer made from common materials is desirable for creating lower-cost, more readily available lenses.
The infrared lens in the researchers’ system is made from…