supply ultra-thin magnifying glass card magnifier fresnel magnifying glass （special sample link）

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supply ultra-thin magnifying glass card magnifier fresnel magnifying glass （special sample link）

供应超薄放大镜卡片放大镜菲涅尔放大镜（特殊样品链接）

EXW Price: Min. order:

USD $0.1
≥500/piece

USD $0.09
≥10000/piece

USD $0.09
≥50000/piece

500 piece

Weight 0.2 kg/piece
Item No. 762541001910

specifications

Specifications

Specifications		Stock	Quantity
85x55mm(85X55MM)	USD $0.0	9947229 piece available
thickness is about 0.5mm(厚度约0.5MM)	USD $0.0	999999 piece available

Summary 0 piece Subtotal:USD $ 0 Selected ∧

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Description

Packaging information

CTN Size: 80 × 40 × 50 cm

G.W./CTN:28 kg

QTY/CTN:600 piece/carton

菲涅尔镜片是根据法国光物理学家FRESNEL发明的原理采用PVC材料压制而成。镜片（0.45-0.5mm厚）表面刻录了一圈圈由小到大，向外由浅至深的同心圆，从剖面看似锯齿。圆环线多而密感应角度大，焦距远；圆环线刻录的深感应距离远，焦距近。同一行的数个同心环组成一个垂直感应区，同心环之间组成一个水平感应段。垂直感应区越多垂直感应角度越大；镜片越长感应段越多水平感应角度就越大。

Update time：20260412154001