A K9 glass biconvex lens is a lens made of K9 optical glass with a biconvex shape. It is commonly used in applications such as imaging, beam expansion or reduction, and convergence, and is often used to focus a collimated beam or to collimate a point light source.
It is characterized by high purity, high light transmission, thermal stability and low refractive index, making it a good performer in optical applications. The design of the biconvex lens enables parallel beams to converge at a single point and is commonly used in laser systems to increase the focusing of the beam.
Description:
Double Convex Lenses (Double Convex Lenses) consist of two convex surfaces of equal radius that focus light into a single point with positive focal length. Due to the symmetrical shape of the two sides, it becomes a more suitable unit piece for 1:1 imaging applications. They are commonly used in imaging relay systems and for imaging objects at finite conjugate distances or for focusing, collimating, and expanding beams. Biconvex lenses are characterized by the fact that the greater the conjugate ratio, the greater the aberration produced. Biconvex lenses are used where the object and image are on opposite sides of the lens and the ratio of image distance to object distance (conjugate ratio) is between 0.2 and 5.