Bessel Lens

Laser Optics Bessel Lens

Part No.

Material

Wavelength

Working Distance

Input beam @ 1/e²

Depth of Focus

Focus line width

BESL-355-10-D10

Fused Silica

355nm

14.53mm

4mm

0.8mm

< 1µm

6mm

1.2mm

8mm

1.7mm

BESL-1064-5-D10

Fused Silica

1064nm

5.16mm

4mm

0.7mm

< 1µm

6mm

1.1mm

8mm

1.5mm

Bessel Lens Diagram Bessel Lens Diagram 4

Bessel Lens Diagram 3 Bessel Lens Diagram 2

Bessel Lens is applicable in laser processing technology particularly in laser cutting and deep-hole drilling of steel, glass, and other materials. Bessel beam, which has a small focusing spot size and long focus depth is generated by allowing laser light to pass through a combination of the axicon lens and focusing lens. The tunability of depth of focus of the output beam by adjusting the size of the input beam diameter is the most attractive feature of this Bessel beam optical system. 

Our company offers Bessel Lens at two wavelengths 355nm and 1064nm with the tunability of output beam focus depth 0.7-1.5mm with respect to the input beam size 4-6mm.

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