IR NEUTRAL DENSITY FILTERS
Metallic-coated infrared neutral density filters (IR ND filters) obtain their optical density from a metal alloy coating on a substrate determined by the wavelength region of interest. Unlike the all-dielectric or absorption type, the metallic type ND filter employs a combination of absorption and reflection to reduce the intensity of light.
Andover's IR ND filters exhibit outstanding spectral neutrality, outperforming all others on the market.
· Provides attenuation with greater linearity over a wide spectral range
· Delivers superior durability
· Custom substrates available
General Specifications:
Dimensional Tolerances:
±0.2mm
Thickness:
1.0mm
Min. Clear Aperture:
90% of outside dimension
Surface Quality:
80/50 per MIL-O-13830B
Coating Quality:
80/50 per MIL-O-13830B
Coating Adherence:
Per MIL-M-13508C
Humidity:
Per MIL-STD-810F
Substrate Material:
Germanium
Flatness:
3–5 waves per 25mm
Parallelism:
10 arc minutes or better
Mechanical:
Unmounted
Note: Custom sizes and spectral characteristics available on request.
Description
Standard IR ND Filter, OD=0.3, 50mm diameter
商品属性 [尺寸] 50mm