Polarizing Beam Splitter using WGF™
Wire grid polarizing beam splitter cube type (WGF™ PBS) using Asahi Kasei WGF™. A customizable wire grid polarizing beam splitter that features low angle of incidence dependence and is available in visible and infrared. (Standard products available)
Features
・Maintains stable optical performance with little dependence on incident angle
・The color and degree of polarization do not change even when reduced, improving the accuracy of image inspection.
・If you are already using a half mirror, you can expect brightness to improve by replacing it with WGF™ PBS.
Specification for standard product
| Coating | R < 0.5%(avg) @AOI 0° 400 - 700 nm |
| Materual | equivalents to BK-7 |
| Extinction Ratio | Tp:Ts > 2400:1 (ave) @AOI 0° 400 – 700 nm |
| Surface quality | 40-20 Scratch width < 21 µm / Dig < 200 µm (4 side surface) |
| Transmittance | Tp > 75% (avg) @AOI 0° 400 – 700 nm |
| Clear aperture | > 80% |
| Transmitted wavefront error | < 1/4λ @ 633 nm |
| Dimentions | 15 mm ｘ 15 mm ｘ 15 mm |
| Dimentional tolerance | ± 0.1 mm |
| Transmitted beam deviation | < 5 arcmin |
Custom product
- Free size development is possible from 10 mm to 50 mm.
- Glass (glass material) with a refractive index can be selected according to the device.
- We have a track record of use in board inspection equipment.
- Please contact us for other specifications such as coating specifications and slope AR.
Application
- for coaxial epi-illumination and Telecentric optical system
- Vision care system
- Semiconductor manufacturing/inspection equipment
Comparison for transmittance of AOI; Multilayer PBS vs. WGF PBS
Multi-layer PBS (MacNeille)
WGF™ PBS
*WGF™ is a product of Asahi Kasei Corporation.
Contact
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