Pyrex Concave Mirrors

产品指标如下：

Material                                            Pyrex glass or substitute

Dia tolerance (inch)                          +0, -0.005

Dia tolerance (mm)                           +0, -0.13

Center Thickness tolerance                ±0.010” (±0.25 mm)

Clear Aperture                                  85% Central Diameter

Parallelism                                        3 arc min

Surface Accuracy                              1/4 wave at 633 nm

Surface Quality                                  60/40

Coating                                            Protected Silver

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