WBMA-30C02-10-550 Aperture Plate

[Features]
· This is a high quality window used to allow light to pass inside vacuum containers, to the reflecting side of partitions, and so on.
· As the transmittance has been enhanced using an antireflection film coating, it can be used as a window for sample observation, or as a window for irradiation by laser, etc.
· The 4% glass surface reflection has been constrained to 1% or less by application of an antireflection film coating of dielectric multilayer film.
· The use of high-quality materials ensures that, by passing through the glass, the image is not distorted or the laser light scattered.
· The angle of the transmitted beam does not change even if this aperture plate is inserted perpendicularly in the path of the laser light.
· * Extremely subtle interference fringes may be observed in the luminance distribution of transmitted light when a laser with a large diameter is used.
· * When used with wavelengths outside the specified wavelength range, transmittance loss will slightly increase.
· * Transmittance may decrease if a large incident angle is used.
[Product Specifications]
· [ Common Specifications]
· Material: BK7
· Substrate Surface Accuracy: λ/10
· Parallelism: < 5″
· Coating: Dielectric Multilayer Anti-reflective Film
· Incidence Angle: 0°
· Laser Yield Strength: 4 J/cm2 (Pulse Width 10 ns, Repetition Frequency 20 Hz)
· Scratch-Dig: 40-20
· Effective Diameter: 90% of External Diameter
· [Individual Specifications]
· Antireflection Film Coating Wavelength Region: 400-700 nm
· Outer diameter φD: φ30 mm
· Thickness t: 2 mm