Baoding Feilong Mould Factory specializes in manufacturing square brick mould boxes, pavement brick plastic moulds, tile plastic moulds, lawn brick mould boxes, hexagonal brick mould boxes, grinding stone brick mould boxes, brick mould boxes and other products. Founded in 1992, Baoding Feilong Mould Factory specializes in manufacturing square brick mould boxes, pavement brick plastic moulds, tile plastic moulds, lawn brick mould boxes, hexagonal brick mould boxes, grinding stone brick mould boxes, brick mould boxes and other products. Feilong Mould Box Mould Factory can customize all kinds of square brick mould boxes, pavement brick plastic moulds, tile plastic moulds, lawn brick mould boxes, hexagonal brick mould boxes, grinding brick plastic mould boxes and brick moulds according to your needs. Box, foreign plastic processing Feilong Plastic Mould Factory specializes in all kinds of mold box molds, road side stone molds, cement tube molds, ditch cover plastic molds, color brick plastic mold boxes, etc. Custom made.
Meniscus Lenses: The Positive Meniscus can increase the NA of the system while only adding slightly to the total spherical aberrations. The Negative Meniscus Lens is used to increase the focal length of another lens while maintaining the angular resolution of the optical assembly. This lens shape is best used when one conjugate is relatively far from the lens. The meniscus lens plays a divergent role in the optical path, and is commonly used in photographic system, objective lens system and laser measuring system.
We supply kinds of Plano-Convex Spherical Lens,Plano-Concave Spherical Lens,bi-convex Spherical Lens,bi-concave spherical lens,meniscus spherical lens,special spherical lens,achromatic spherical lens,ball lens,sphere lens etc.
Specification of our optical meniscus spherical lens as follow:
Hebei Feilong Plastic Mould Factory:
Phone handset contact: Liang Lijun (manager)
Address: Get off at the north exit toll station of Baoding High-speed Road, Hebei Province, one kilometer. Website: http://
Http://news.chinawj.com.cn 
Submission:
*Material BK7,CaF2 crystal,MgF2,Ge,BaF2 lens,ZnSe or other optical materials
*Dimension Tolerance +0.0 - -0.1mm
*Center Thickness +/-0.1mm
*Focal Length Tolerance+/-1%
*Surface Quality:60/40
*Surface Figure:lambda/2 at 633nm on plano side
*Clear Aperture >90%
*Chamfer 0.25mm at 45 degree typical
*Coating Optional
Meniscus Spherical Lens,Meniscus Spherical Lenses,Optical Glass Meniscus Lens,Glass Meniscus Lens
China Star Optics Technology Co.,Ltd. , https://www.csoptlens.com