Laser Beam Expander with Diopter Movement / BE_LBED

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.

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".

Product Image	Outline Drawing

Specifications

Part Numbe	Design Wavelength	Expansion Ratio	Input Aperture (MAX)	Barrel Length A	φB	Mounting Thread C	φD	Diameter φE	Laser Damage Threshold^*	Weight
BE-2-266	266nm	2x	φ15.5mm	72.0±4mm	φ57mm	M34 P1	φ48mm	φ60mm	1.4J/cm²	0.3kg
BE-3-266	266nm	3x	φ10.5mm	79.5±4mm	φ57mm	M34 P1	φ48mm	φ60mm	1.4J/cm²	0.3kg
BE-4-266	266nm	4x	φ9.0mm	90.5±4mm	φ57mm	M34 P1	φ48mm	φ60mm	1.4J/cm²	0.3kg
BE-5-266	266nm	5x	φ7.0mm	119.5±4mm	φ57mm	M34 P1	φ48mm	φ60mm	1.4J/cm²	0.4kg
BE-7.5-266	266nm	7.5x	φ4.5mm	129.0±4mm	φ57mm	M34 P1	φ48mm	φ60mm	1.4J/cm²	0.4kg
BE-10-266	266nm	10x	φ3.5mm	173.0±4mm	φ57mm	M34 P1	φ48mm	φ60mm	1.4J/cm²	0.4kg
BE-2-355	355nm	2x	φ15.5mm	75.0±4mm	φ57mm	M34 P1	φ48mm	φ60mm	2J/cm²	0.3kg
BE-3-355	355nm	3x	φ10.5mm	83.0±4mm	φ57mm	M34 P1	φ48mm	φ60mm	2J/cm²	0.3kg
BE-4-355	355nm	4x	φ9.0mm	94.5±4mm	φ57mm	M34 P1	φ48mm	φ60mm	2J/cm²	0.3kg
BE-5-355	355nm	5x	φ7.0mm	125.0±4mm	φ57mm	M34 P1	φ48mm	φ60mm	2J/cm²	0.4kg
BE-7.5-355	355nm	7.5x	φ4.5mm	134.5±4mm	φ57mm	M34 P1	φ48mm	φ60mm	2J/cm²	0.4kg
BE-10-355	355nm	10x	φ3.5mm	181.0±4mm	φ57mm	M34 P1	φ48mm	φ60mm	2J/cm²	0.5kg
BE-2-V	400～700nm	2x	φ6.0mm	42.0＋3/－2mm	φ36mm	M22 P0.75	φ26mm	φ40mm	4J/cm²	0.12kg
LBED-3	400～700nm	3x	φ5.4mm	42.0＋3/－2mm	φ36mm	M22 P0.75	φ26mm	φ40mm	4J/cm²	0.12kg
BE-4.1-V	400～700nm	4.1x	φ4.1mm	62.0±3mm	φ36mm	M22 P0.75	φ26mm	φ40mm	4J/cm²	0.13kg
LBED-5	400～700nm	5x	φ3.2mm	50.5±3mm	φ36mm	M22 P0.75	φ26mm	φ40mm	4J/cm²	0.12kg
BE-6-V-S	400～532nm^*1	6x	φ4.3mm	102.0±3mm	φ36mm	M22 P0.75	φ36mm	φ40mm	4J/cm²	0.17kg
BE-6-V	400～700nm	6x	φ4.3mm	102.0±3mm	φ36mm	M22 P0.75	φ36mm	φ40mm	4J/cm²	0.17kg
BE-7.6-V	400～700nm	7.6x	φ3.4mm	80.0±3mm	φ36mm	M22 P0.75	φ36mm	φ40mm	4J/cm²	0.15kg
BE-8.4-V-S	400～532nm^*1	8.4x	φ3.1mm	89.5±3mm	φ36mm	M22 P0.75	φ36mm	φ40mm	4J/cm²	0.16kg
BE-8.4-V	400～700nm	8.4x	φ3.1mm	89.5±3mm	φ36mm	M22 P0.75	φ36mm	φ40mm	4J/cm²	0.16kg
LBED-10	440～700nm	10x	φ2.6mm	109.5±3mm	φ36mm	M22 P0.75	φ36mm	φ40mm	4J/cm²	0.18kg
BE-12.6-V	450～700nm	12.6x	φ2.1mm	138.0±3mm	φ36mm	M22 P0.75	φ36mm	φ40mm	4J/cm²	0.2kg
BE-14.3-V	460～700nm	14.3x	φ1.8mm	158.5±3mm	φ36mm	M22 P0.75	φ36mm	φ40mm	4J/cm²	0.2kg
BE-16.8-V	480～700nm	16.8x	φ2.1mm	190.0±3mm	φ36mm	M22 P0.75	φ46mm	φ40mm	4J/cm²	0.3kg
BE-18.5-V	500～700nm	18.5x	φ1.9mm	211.0±3mm	φ36mm	M22 P0.75	φ46mm	φ40mm	4J/cm²	0.3kg
BE-21-V	510～700nm	21x	φ1.7mm	241.0±3mm	φ36mm	M22 P0.75	φ46mm	φ40mm	4J/cm²	0.3kg
BE-1.5-LD	780～830nm	1.5x	φ16.1mm	51.0＋4/－2mm	φ57mm	M34 P1	φ48mm	φ60mm	4J/cm²	0.3kg
BE-2-LD	780～830nm	2x	φ15.3mm	53.0±4mm	φ57mm	M34 P1	φ48mm	φ60mm	4J/cm²	0.3kg
BE-3-LD	780～830nm	3x	φ10.1mm	64.0±4mm	φ57mm	M34 P1	φ48mm	φ60mm	4J/cm²	0.3kg
BE-4-LD	780～830nm	4x	φ8.9mm	95.5±4mm	φ57mm	M34 P1	φ48mm	φ60mm	4J/cm²	0.3kg
BE-5-LD	780～830nm	5x	φ7.2mm	125.5±4mm	φ57mm	M34 P1	φ48mm	φ60mm	4J/cm²	0.4kg
BE-7.5-LD	780～830nm	7.5x	φ4.7mm	135.5±4mm	φ57mm	M34 P1	φ48mm	φ60mm	4J/cm²	0.4kg
BE-10-LD	780～830nm	10x	φ3.6mm	186.5±4mm	φ57mm	M34 P1	φ48mm	φ60mm	4J/cm²	0.5kg
BE-1.5-1064	1064nm	1.5x	φ16.0mm	52.0＋4/－3mm	φ57mm	M34 P1	φ48mm	φ60mm	4J/cm²	0.3kg
LBED-2Y	1064nm	2x	φ15.1mm	49.0＋4/－0mm	φ57mm	M34 P1	φ48mm	φ60mm	4J/cm²	0.3kg
LBED-3Y	1064nm	3x	φ10.2mm	64.5±4mm	φ57mm	M34 P1	φ48mm	φ60mm	4J/cm²	0.3kg
LBED-4Y	1064nm	4x	φ8.6mm	93.5±4mm	φ57mm	M34 P1	φ48mm	φ60mm	4J/cm²	0.3kg
BE-5.3-1064	1064nm	5.3x	φ6.8mm	127.5±4mm	φ57mm	M34 P1	φ48mm	φ60mm	4J/cm²	0.4kg
BE-7-1064	1064nm	7x	φ5.1mm	179.5±4mm	φ57mm	M34 P1	φ48mm	φ60mm	4J/cm²	0.5kg
BE-10-1064	1064nm	10x	φ3.6mm	188.5±4mm	φ57mm	M34 P1	φ48mm	φ60mm	4J/cm²	0.5kg