FAST HIGH-SPEED LENS Russian patent published in 2005 - IPC

FIELD: optical engineering.

SUBSTANCE: lens is intended for operation with different radiation receivers inside spectral range up to 350 nm. Lens has three components and aperture diaphragm mounted between third and second components. First component is made of two single positive lenses, the second component has to be meniscus turned with its concavity to image. Second component is formed by two glued lenses - one negative and one positive. Third component has two lenses, each of which is glued of two lenses having focal power of opposite signs. First glued lens of third component has to be meniscus turned with its concavity to image. Distance between second and third components equals to (0,3…0,4)f'_l and focal powers of lens' components has to be (0,8…1,0)ϕ_l, 9-0,9…1,0)ϕ_l and (1,3…1,5)ϕ_l, where f'_l and ϕ_l are focal length and focal power of lens correspondingly. All lenses are made of materials with high radiation-optical resistance, which results to ability of using lens under condition of gamma-ray radiation having power of 5x10⁶ R/h. Back focal segment equals to 0,32 focal length. Illumination of surface is adjusted due to change in diameter of aperture diaphragm inside system.

EFFECT: increased radiation-optical resistance.

2 cl, 3 dwg