All articles tagged with #lens design
Canon has filed a Japanese patent (JP 2026-152979) describing a telephoto zoom lens with a built-in empty slot designed to accept a 1.4x teleconverter. This design allows users to extend focal length without increasing the physical size of the lens, potentially offering a cost-effective alternative to built-in extenders for high-end 'big white' lenses.
Researchers have developed new instruments to evaluate specialized eyeglass lenses that slow the progression of nearsightedness, potentially leading to improved lens designs and treatments for millions of children. The instruments measure lens performance under real-world viewing conditions and reproduce the myopic eye's pupil and refractive errors. The optical properties of this relatively new technology have not been extensively studied and compared, and the insights gained from this new approach could help inform future lens designs that are even more effective at preventing visual decline.