Material: bk7 or other materials length tolerance:+/-0.01 width tolerance:+/-0.01 center thickness tolerance:0.005mm surface quality:80-50~10-5 surface flatness
As request
"specification of our fisheye lens as follow:
*37mm 0.42x fisheye lens;
*72mm, 82mm 0.7x fisheye lens "
As request
Material:bk7 or(jgs1 jgs2 jgs3) glass qualityz:nd+/-0.001~+/-0.0001 vd +/-0.8%~+/-0.1% dimension tolerance:+/-0.20mm~+0.01/-0.01mm thickness tolerance:+/-0.20mm~+/-0.005mm surface quality:80-50~10-5 surface flatness: at 632.8nm lambda~ lambda /20 per 25mm clear aperture 80% ~100% angle tolerance 3-5 minutes~3 second chamfer 0.3+/-0.20mm x45degree no chamfer coating optional
As request
"we supply optical spherical ball lens
Specifications:
Material: bk7, lasfn9 glass or other optical glass
Sphericity: /4 at 633nm
Surface quality: 20-10
Diameter: 1m
Coating (optional): r<1.5% avg per surface, 400-700nm at 0angle of incidence"
As request
Basic properties of optical linbo3 crystal lens as follow: crystal structure:trigonal, point group 3m lattice parameters:a=b=5.148 , c=13.863 density:4.64 g/cm3 melting point:1250 degrees curie point:1142+/- degrees mohs hardness:55 dielectric constant :e11/e0 = 85; e33/e0 = 29.5 thermal conductivity:38 w/m egrees at 25 egrees thermal expansion coefficient:a1=a2 =2x10-6 egrees, a3=2.2x10-6/ degrees at 25degrees piezoelectric strain constant:d22 = 2.04 x 10-11 c/n, d33 = 19.22 x 10-11 c/n elastic stiffness constant:ce11 = 2.04 x 1011 n/m2, ce33 = 2.46 x 1011 n/m2
As request
