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WBMA
Wavelength range
Diameter φD
Thickness t
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These optical windows have high-quality and may be used when light is passed through the opposite side of the partition or in the vacuum chamber. Since the windows have anti-reflection coatings the transmittance is increased so they can be used as a window for laser irradiation windows and the observation of the sample.

◦By anti-reflection coating with a dielectric multi-layer, it is reduced to less than 1% to 4% reflection loss of the glass surface.
◦Since we are using the high quality material, the image will not be distorted by the transmission of the glass, and the laser beam is not diffused.
◦When you insert an window perpendicular to the optical path of the laser, the angle of the transmitted beam will not be changed.

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Guide

▶Anti-reflection coatings are also available at your specified wavelength.
▶In addition to the products described on our website and in the catalog other sizes and wedged windows are available.
▶Please refer to here for Wavelength Characteristic Data (Reference Data, EXCEL file format).

Attention

▶When using a laser which has a large diameter, there is a possibility that very little interference fringes will be observed in the luminance distribution of the transmitted light. To avoid this effect of the interference fringes, we provide wedged substrates.
▶When used at wavelengths other than the specified wavelength region, the loss of transmittance increases slightly.
▶When used in a large incident angle, there is a possibility that the transmittance decreases. Also available are anti-reflection coating to increase the transmittance at a particular angle of incidence.

Common Specifications
MaterialBK7
Surface flatness λ/10
Parallelism<5″
CoatingDielectric multi-layer coating
Incident angle
Laser Damage Threshold4J/cm2 (Laser pulse width ; 10ns , Repetition frequency ; 20Hz)
Laser Damage Threshold4J/cm2
Surface Quality
(Scratch-Dig)
40-20
Clear aperture90% of the diameter
Outline Drawing

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Schematic

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Typical Transmittance Data

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T: Transmission
Spec
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Part Number
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    JP Yen Stock Qty
WBMA-15C02-10-550
WBMA-15C03-10-550
WBMA-20C02-10-550
WBMA-20C03-10-550
WBMA-25C02-10-550
WBMA-25C03-10-550
WBMA-25.4C03-10-550
WBMA-30C02-10-550
WBMA-30C03-10-550
WBMA-40C04-10-550
WBMA-50C05-10-550
WBMA-15C02-10-IR1
WBMA-15C03-10-IR1
WBMA-20C02-10-IR1
WBMA-20C03-10-IR1
WBMA-25C02-10-IR1
WBMA-25C03-10-IR1
WBMA-25.4C03-10-IR1
WBMA-30C02-10-IR1
WBMA-30C03-10-IR1
WBMA-40C04-10-IR1
WBMA-50C05-10-IR1
WBMA-15C02-10-IR2
WBMA-15C03-10-IR2
WBMA-20C02-10-IR2
WBMA-20C03-10-IR2
WBMA-25C02-10-IR2
WBMA-25C03-10-IR2
WBMA-25.4C03-10-IR2
WBMA-30C02-10-IR2
WBMA-30C03-10-IR2
WBMA-40C04-10-IR2
WBMA-50C05-10-IR2

400 - 700nm

φ15mm

2mm

400 - 700nm

φ15mm

3mm

400 - 700nm

φ20mm

2mm

400 - 700nm

φ20mm

3mm

400 - 700nm

φ25mm

2mm

400 - 700nm

φ25mm

3mm

400 - 700nm

φ25.4mm

3mm

400 - 700nm

φ30mm

2mm

400 - 700nm

φ30mm

3mm

400 - 700nm

φ40mm

4mm

400 - 700nm

φ50mm

5mm

633 - 1064nm

φ15mm

2mm

633 - 1064nm

φ15mm

3mm

633 - 1064nm

φ20mm

2mm

633 - 1064nm

φ20mm

3mm

633 - 1064nm

φ25mm

2mm

633 - 1064nm

φ25mm

3mm

633 - 1064nm

φ25.4mm

3mm

633 - 1064nm

φ30mm

2mm

633 - 1064nm

φ30mm

3mm

633 - 1064nm

φ40mm

4mm

633 - 1064nm

φ50mm

5mm

750 - 1550nm

φ15mm

2mm

750 - 1550nm

φ15mm

3mm

750 - 1550nm

φ20mm

2mm

750 - 1550nm

φ20mm

3mm

750 - 1550nm

φ25mm

2mm

750 - 1550nm

φ25mm

3mm

750 - 1550nm

φ25.4mm

3mm

750 - 1550nm

φ30mm

2mm

750 - 1550nm

φ30mm

3mm

750 - 1550nm

φ40mm

4mm

750 - 1550nm

φ50mm

5mm

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¥14,400

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¥19,800

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¥6,300

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¥8,100

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¥14,400

CONTACT
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LOW