Request InfoResolve Optics Ltd.Manufactured from non-browning optical glass, the Model 313-000 fixed focus lens from Resolve Optics operates at an aperture of f/1.4 to enable as much light as possible to be gathered and transmitted to the sensor. The 313-000 is optimized for use with 2/3-in. image format radiation resistant CID cameras. The lens is proven to withstand long-term exposure to radiation up to a dose of 100,000,000 rads and temperatures up to 131 °F (55 °C) without discoloration, meeting low light applications in space exploration and in the nuclear industry. 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