BSW-20 Beam Displacers BSW-20-4.8-VIS
BSW beam shifters precisely tilt glass windows for lateral displacement. Superposing shifted images improves resolution up to 4 times beyond pixel limits. A bearing-free, frictionless design ensures reliable continuous operation. BSW-20 has a large 20 × 20 mm² clear aperture for imaging, projectors, cameras, fiber coupling, 3D printing, surveillance, display inspection and metrology. ICC-4C-2000 and software provide plug-and-play shifting, a cost-effective option when smaller pixels/larger sensors cannot be used. Geometry, drive and optics are customizable. Configuration: place the window between sensor and lens; image shifting needs a dual-channel current controller, with camera or BSW as master. Standard products, original table: Model | Mounting | Clear Aperture (mm) | Wavelength Range(nm) | Dimensions | Maximum Beam Shift(μm) BSW-20-4.8-VIS | Unmounted | 20 x 20 | 400 - 650 | 47 x 35 x 3.4 | 4.8 BSW-20-4.8-VIS-M | Mounted in Housing | 20 x 20 | 400 - 650 | 50.8 x 50.8 x 12 | 4.8
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Overview
Specifications
| Parameter | Value |
|---|---|
| Drive Type | Voice-coil drive |
| Single-Axis Mechanical Tilt Angle | ±5.2 mrad（±0.3°） |
| Mechanical Tilt with Both Axes Driven Simultaneously | ±3.5 mrad（±0.2°） |
| Circular Field of View | Supports Maximum Beam Shift 4.8 µm (Peak-to-Peak) |
| Effective Clear Aperture | 20 mm × 20 mm |
| Window Thickness | 2 mm |
| Dimensions | 50.8 mm × 50.8 mm × 12 mm |
| Weight | 53 g |
| Motion Mode | Two-Dimensionally Programmable |
| Position Control | Open Loop |
| External Sensor Feedback Control | Optional |
| Ratio Drift | 1000 ppm/K |
| Resolution [With ICC-4C-2000] | 4 µrad (with ICC-4C-2000) |
| Static Motor Constant | 17.5 mrad/A（1.0°/A） |
| Dynamic Motor Constant | 1.2 × 10⁴ rad/(As²) |
| Resonant Frequency | 130 ± 5 Hz |
| Bandwidth [Sine Wave ；±2.3 mrad] | 250 Hz（ Sine Wave ，±2.3 mrad） |
| Typical Transition Time | 1.3 ms( Rise Time ) |
| Settling Time | 4 ms |
| Window Material and Surface Treatment | B 270,VIS Coating |
| Refractive Index | 1.523 |
| Abbe Number | 58.5 |
| Transmittance [VIS Coating ;400–680 nm;0–34°AOI] | VIS Coating ,400–680 nm > 98%,0–34°AOI |
| Surface Quality | 5/5×0.2;L1×0.04;C3×0.2;(ISO 10110, Equivalent to Scratch-Dig 60/40) |
| Transmitted Wavefront Error [RMS] | <80 nm |
| Maximum Continuous Current [RMS; Single Axis] | 300 mA |
| Maximum Continuous Current [RMS; Dual Axis; Per Channel] | 200 mA |
| Maximum Peak Current [Continuous 10 ms] | 1 A ( Continuous 10 ms) |
| Average Power Consumption | < 2 W |
| Standard Actuator Resistance per Channel | 9.8 Ω |
| Temperature Sensor | ILM75BTP,147 or Compatible;2C-address:1001100x (R:0x98 / W:0x99) |
| EEPROM | M24C64-FMC6TG or compatible model; I2X-address: 1010000x (R: 0xA0 / W: 0xA1) |
Key Features
Datasheet
Supplier Information
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