Place of Origin:

Jilin, China

Brand Name:

EFFORT, Effort Technology

Model Number:

Effort glass window

Material:

Plastic, PMMA, PVC,Acrylic

Usage:

Optical

Structure:

Plano-concave

Shape:

square,round

Product name:

Google Cardboard Lens

Parallelism:

<10 arc seconds

Dimension.tol:

+0.0, -0.15mm

Bevel:

0.25mmX45 degree

Thickness tolerance:

±0.1mm

Surface quality:

10-5 scratch and dig

Clear Aperture:

>90% of diameter

Density:

2.2g/cm3