Spherical lenses often used for aiming and focusing of monochromatic light source.Plano-Concave Lenses have a negative focal length and is typically used to cause a collimated beam to diverge as in a Galilean type beam expander or Telescope. Because the spherical aberration of thePlano-Concave is negative, it can be used to balance the aberration of other lenses. This lens is widely use in optical display systems, projection optics systems, imaging and laser measureemnt systerms.
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 spherical lens as follow: Plano-Concave Spherical Lens,Optical Plano-Concave Lens,Double-Concave Lens Kit,Simple Double-Concave Lens Kit China Star Optics Technology Co.,Ltd. , https://www.opticsrealpoo.com
Represents pesticide concentration 1, pc - percent concentration. 2. The concentration of ppm-million is now abolished and changed to 10-6 or mg/kg (mg/kg). 3, ec - effective concentration. 4, lc - lethal concentration. 5, med - the minimum effective concentration. 6, lc50 - half lethal concentration. 7, tl50 - drug resistance in the concentration.
Represents pesticide dosage form 1, ec-emulsification. 2, ol - oil agent. 3, es - emulsion, latex, emulsion, emulsion. 4, ep - milk powder. 5, me - microemulsion. 6, sl - suspension agent. 7, ws - water suspension. 8, sc - suspension. 9, gf or gm - aerosol. 10, wp - wettable powder. 11, sp - soluble powder. 12, g - granules. 13, fo - micro powder. 14, me-paste. 15, wg - water dispersion (granule) agent.
*Material: BK7,fused silica,MgF2,BaF2,CaF2,ZnSe,ZnS,Ge or other optical crystals
*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
The pesticide symbols marked on the pesticide packaging and pesticide instruction manual are generally composed of 1-3 English letters, some of which represent pesticide concentration, and some represent pesticide dosage forms. Only by knowing the meaning of these pesticide symbols can the pesticide be applied accurately and effectively, otherwise the cost of medicine or the loss of crop damage will be increased.
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