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specializes in producing CR-39resin lens, sphere lens, cylinder lens, round-top bifocal, flat-top bifocal, invisible lens, progressive lens, 1.499index, 1.56index, 1.61index UC, HC, HMC CR-39 Single Vision Lens N=1.499; 1.56; 1.60 Dia.65mm; 70mm Sph:.....

CR-39 Round Top Bifocal Lens N=1.499 Dia.70/28mm Semi-finished: base 6.00 the edge thickness 6.0mm base 4.00 the edge thickness 6.0mm Finished Distance: 0.00 to +3.00; Add: +0.25 to +3.00; Minus Distance: -0.25 to -1.00; Add: +0.25 to.....

Plano-Concave Lens Plano-concave lens is simple lens with negative focal lengths. They are often used to expand light or increase focal lengths in existing systems. Biconcave Lenses Biconcave Lenses have negative focal lengths. They are often.....

1/3"Super Had CCD Min. Illumination:0.5Lux， 3.6mm、4mm、6mm、8mm、12mm focal optional Swing:0~355° Revolution range:0～355°，Tilt Revolution range;0～90 32 presets, 4 Group OSD menu, swing RS485 communication support multi-protocol:.....

Model NO.: HL-A015 Item Name: F500114EQ Aperture： 114mm(4.5″) Focal length： 500mm(f/4.5) Finderscope： 6×30 Most height： 135cm width: 　 Material Heavy duty, aluminum tuipod Outer packing: 　 Carton dimensions: 　 Remark:.....

1/3? Sony CCD dome camera, 420TVL, 1Lux/F1.2, with built-in 3.6~8mm varifocal lens Φ108mm housing diameter