Optical Meniscus Lenses

Optical Meniscus Lenses
*Lenses have many applications in range from the simple collection of the scanning of laser beams to precise imaging and image transferring. Lenses are classified as single, cylindrical and achromatic lenses according to the different applications. Our company provides these lenses with the material of optical glasses, crown glass and Flint glass, fused silica, sapphire, silicon and germanium. Special focusing systems are able to be designed by engineers upon request.

*Positive meniscus lenses is convex-concave lens thicker at the center than at the edges. They are used to minimize spherical aberration. When used in combination with another lens, it’s will shorten the focal length, and increase the NA of system.

Negative meniscus lenses is convex-concave lens thinner at the center than edges. They increase the divergence of the beam without introducing any significant spherical aberration. When used in combination with another lens, they will increase the focal length, and decrease the NA of the system.

*Specifications:
Material: Grade A optical glass or Fused Silica
Dimension Tolerance: +0.0, -0.1mm
Center Thickness Tolerance: ±0.1mm
Paraxial Focal Length: ±2%
Surface quality: 60/40
Clear Aperture: >85%
Surface Figure: λ/4 @633nm
Centration: 3 arc minutes
Bevel: <0.25mm×45°
Coating: Upon requirement

*Please feel free to contact with us.Your specific requirements will be satisfied in professional service.More information,please refer to http://www.dnd-optics.com