Points To Note When Using A Cylindrical Lens

Mar. 15, 2019

In most cases, the cylindrical lens is made of glass, wherein the cylindrical surface of the cylindrical lens is a precisely treated optical surface. A typical cylindrical lens is a Plano Concave Cylindrical Lens that adds flexibility to manufacturing and testing. Very similar to a spherical lens, the cylindrical surface is affected by the surface accuracy and is further processed after polishing. Surface accuracy is determined by surface irregularities and surface quality, which are the same as spherical lenses. Unlike spherical lenses, cylindrical lenses have other specifications, including guidelines and busbars (Figure 1). These axes are used to define the angle between the planes. These specifications require specific analysis of specific issues.

Points To Note When Using A Cylindrical Lens

The following specifications are subject to specific analysis based on the target application:

Quasi-line wedge angle (eccentricity)

When the alignment is not perpendicular to the thickness of the lens, a guideline wedge angle is produced. Similar to the spherical eccentricity in a spherical optic, the collimated wedge angle is the displacement of the actual optical axis. If the cylindrical lens has a collimated wedge angle, the following mechanical and optical aberrations may occur in the system, including:

Uneven line thickness at both ends of the focal plane

Beam deviation on the alignment

Points To Note When Using A Cylindrical Lens

Busbar wedge angle

When the busbar is not perpendicular to the thickness of the lens, a busbar wedge angle is generated. This wedge angle causes the beam to be angularly offset, which can significantly increase the pointing error of the system. If the cylindrical lens has a bus wedge angle, the following mechanical and optical aberrations may occur in the system, including:

Uneven line thickness at both ends of the focal plane

Beam deviation on the bus

Focus plane tilt

BRD is specialized in produce Optical Spherical Lens .Our products are very popular, if you are interested in our products, please contact us as soon as possible. 

Points To Note When Using A Cylindrical Lens

Contact us
  • Head Office
  • Tel: +86 431 8188 4163
  • Add: No.399 Bo Cai Road, High-Tech Industrial Development Area, Changchun, Jilin, China, Zip code 130012
  • UK Office
Send Inquirey