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(Total 4 Products for Optical Lens Function)
The line connecting the centers of curvature on both sides is called the principal axis, and the central point O is called the optical center. Light passing through the optical center does not refract no matter where it comes from. The beam parallel to the main axis refracts on the concave lens and diverges to the...
Function of concave lens optical
With two concave surfaces, biconcave lenses have negative focal length, causing collimated incident light to diverge, and they are ideal for expanding the focal length of an optical system. Bena’s biconcave lenses are offered with various materials, including UV Fused silica, ZnSe, Silicon, Ge, CaF2, MgF2, N-SF10,...
Penta Prism Penta Prism containing two reflecting surfaces at 45 to each other, and two refracting faces perpendicular to the entering and emerging beams. It provides a 90° deviation of the beam from the focus plane. supply custom Penta Prism, including N-BK7 Penta Prism and UV Fused Silica Penta Prism for use in the...
When used in light sparse medium, it can diverge the incident beam, so it is also called divergent lens. It is also called negative lens because its focal length is negative. For thin concave lens, the imaging formula, transverse magnification formula and sign rule are the same as those for convex lens. The image...
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