Laser Beam Expander with Diopter Movement / BE-8.4-V
This is an optical system for expanding a small collimated laser beam to a larger one. Fine adjustment of the collimator is available using the diopter correction function. You can use in a high precision optical system like an interferometer or laser processing with lens designed for wave from aberration.
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Part Number
BE-8.4-V-S
◦The beam expander optical system is air-space with no bonded lenses and can be used for high powered laser applications.
◦With the Galilean type lens configuration, it reduces the number of aberration corrections and shortens the length of the beam expander.
◦By turning the diopter ring on the beam expander, you can have a varied collimated beam with beam divergence on the focused beam. A beam waist or an accurate adjustment of the collimation is required.
◦There is a wide variety with different magnification and wavelengths to choose from.
◦As for the beam expanders type for visible lasers (LBED, BE-V), the accessory (He-Ne laser connection adapter) has been changed to a separate product (LBED-ADP-1) from June 2021. For details, please refer to the important notice " Introduction to Laser Beam Expander Accessories".
◦BE-6-V-S and BE-8.4-V-S are modified versions of BE-6-V and BE-8.4-V respectively. They have extended diopter adjustment range for short VIS wavelength, and would be ideal for low-power laser.
◦With the Galilean type lens configuration, it reduces the number of aberration corrections and shortens the length of the beam expander.
◦By turning the diopter ring on the beam expander, you can have a varied collimated beam with beam divergence on the focused beam. A beam waist or an accurate adjustment of the collimation is required.
◦There is a wide variety with different magnification and wavelengths to choose from.
◦As for the beam expanders type for visible lasers (LBED, BE-V), the accessory (He-Ne laser connection adapter) has been changed to a separate product (LBED-ADP-1) from June 2021. For details, please refer to the important notice " Introduction to Laser Beam Expander Accessories".
◦BE-6-V-S and BE-8.4-V-S are modified versions of BE-6-V and BE-8.4-V respectively. They have extended diopter adjustment range for short VIS wavelength, and would be ideal for low-power laser.
| Catalog Code | W3091 |
|---|---|
| RoHS | Yes |
| CE | No |
| Download Product's Datasheet | |
| CAD data | |
| Guide | ▶We provide the laser beam expander holders (KLH-BE) for optical axis adjustment of the laser beam expander. WEB Reference Catalog Code/W4147 ▶We can also fabricate achromatic beam expanders with multiple wave lengths other than those found in on-line and in our catalog, call our Sales Division for more information. ▶Fabrication of beam expander for high-energy pulsed laser is also available. WEB Reference Catalog Code/W3200 |
| Attention | ▶By using in the opposite direction, it will not create a reduction in diameter of the collimated beam. Please use the appropriate optical system by determining the position of the beam waist and the divergence angle of the laser beam. ▶Fluorescence occurred in lenses may be observed when visible beam expanders (LBED/BE-V) are used for high-power 405 nm laser. |
| Laser Damage Threshold | 4J/cm2 |
| φB | φ36mm |
| φD | φ36mm |
| Design wavelength | 400 - 532nm ( Fluorescence occurred in lenses may be observed when using high-power 405 nm laser. ) |
| Magnification | 8.4× |
| Barrel Diameter φE | φ40mm |
| Barrel length A | 89.5±3mm |
| Weight | 0.16kg |
| Mounting thread C | M22 P0.75 |
| Input aperture (Maximum) | φ3.1mm |
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