A SUPER WIDE ANGLE CAMERA LENS FOR SURVEILLANCE

摘要

PURPOSE: A super wide angle camera lens for monitoring is provided to photograph a very wide range of view by employing an optical system having an image angle of 190 degrees or greater and a small thickness of about 14mm or less. CONSTITUTION: A first lens(L1) has one aspherical surface and a meniscus shape convex toward an object. A second lens(L2) is concave on both sides thereof. A third lens(L3) has one aspherical surface and a meniscus shape convex toward an object. A fourth lens(L4) is convex on both sides thereof. A fifth lens(L5) is convex on both sides thereof. A sixth lens(L6) has one concave surface attached to the fifth lens and the other surface flat. An aperture(AS) is interposed between the third and fourth lenses and allows only light necessary for image forming to pass.