MgF2 Coated Double-Convex (DCX) Lenses

1: What is the difference between convex lens and double convex lens?

One or both of the lens faces is part of a sphere and can be concave or convex. A lens is called a convex lens if it is thicker at the center than at the edges. ... Double convex lenses have focal points on both sides of the lens; these and the points at twice the focal length are used to locate objects and images.

2: What does a double convex lens do?

The fact that a double convex lens is thicker across its middle is an indicator that it will converge rays of light that travel parallel to its principal axis. A double convex lens is a converging lens. A double concave lens is also symmetrical across both its horizontal and vertical axis.

3: What is the focal length of a double convex lens?

If the radius of a curvature of a double convex lens is 10 cm and 15 cm and its refractive index is 1.5, then what is its focal length? A double convex lens 1.5 and the radius of curvature are 20 cm and 40 cm.

Common Specification:

Material: Optical glass/Fused Silica
Design wavelength: 546.1nm
Diameter tolerance: +0/-0.05mm
Focal tolerance: +/-2%
surface quality : 40-20 S/D 
Centration: 1 arcmin 
Surface flatness: N=3 △N=0.5 
Clear aperture: 90%
Bevel: Protective
Coating Optional: Single layer MgF2, Multiple layers BBAR coating
Designed for 0° Angle of Incidence

What is a dcx lens?Simply put，dcx lenses also referred to as bi-convex lenses, have two positive, symmetrical faces with equal radii on both sides.

Double-convex lenses are used in image relay applications, or for imaging conjugated objects at close range. With a positive focal length and two convex surfaces of equal radius, double-convex lenses are used in a range of industries or applications.

Concave spherical lenses have a negative focal length that causes incident light to diverge (creating a virtual image). In contrast, spherical convex lenses have a positive focal length that causes incident light to converge.