Features

• Zoom-type laser beam expander for high power variable up to 1~3 times.
• The diopter correction function allows fine adjustment of collimation.
• It can be used for high-precision optical systems such as interferometers and laser machining by lens design that takes wavefront aberration into consideration.
• The optical system of the beam expander has an air gap configuration without gluing lenses together. This allows it to be used with high-power lasers.
• The Galileo lens configuration reduces the number of aberration correction lenses and shortens the total length of the beam expander.
• By turning the diopter ring in the center of the beam expander, you can change the beam from focused to collimated to divergent.
• Use this when you need a strict collimating adjustment or when you want to change the position of the beam waist.
• Laser beam expander holder (BE-M22 H, BE-M34 H) with fine aori adjustment to fix the beam expander is available.
• * The beam expander cannot be used in the opposite direction to produce collimated light with reduced beam diameter.
• * Determine the divergence angle of the laser beam and the position of the beam waist, and use an appropriate optical system.