F-Theta Lens


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06_MultielementLenses_2013_final.qxd

12/28/2012

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Page 6.21

Optical Coatings Optical Materials

F-Theta Lens

Windows Prisms and Retroreflectors Spherical Lenses

F-Theta Lens

SPECIFICATIONS: F-Theta Lens N-BK7 and N-SF11 1064 nm R ≤ 0.3% per surface at 1064 nm

Cylindrical Lenses

Optical Materials Design Wavelength Antireflection Coating

Multielement Lenses

F-Theta lenses are commonly used in conjunction with galvonometer scanning mirrors in laser marking, engraving, and cutting systems along with Nd:YAG or Fiber Laser Sources. F-Theta lenses provide a flat image field at the plane of interest. Standard features include air-spaced design for high damage threshold, anti-reflection coatings on all surfaces, and M85x1 screw thread for easy fixturing. In addition to the lenses shown below, CVI Laser Optics designs custom lenses for other OEM applications, specifications levels or price ranges. Please contact an Applications Engineer for further information.

Mirrors

$ Provides a flat field at the image plane of the scan $ Image velocity is proportional to the angular velocity of the scanning mirror

Beamsplitters

IPS a1-a2

v

D

SL

BFL FFL

Polarization Components

a2

Effective Focal Length Back Focal Length Scan Length Input Beam Diameter Image Spot Size Assembly Diameter Flange Focal Length Scan Angle (8)

Waveplates

EFL BFL SL BD IPS D FFL v

BD

FTL-1064-series F-theta scanning lens From our Shelves to Your Lab – Standard Products for Fast Delivery

Femtosecond Components

F-Theta Lens EFL (mm)

BFL (mm)

FFL (mm)

Scan Length (mm)

Input Beam Diameter (mm)

Scan Angle

Image Spot Size (mm)

a1/a2 (mm)

Assembly Diameter (mm)

Max Distortion (%)

PART NUMBER

1064 1064 1064

100.0 160.1 254.4

103.3 180.8 294.5

102.6 184.0 345.2

105.0 149.8 260.2

12.0 12.0 20.0

30.0° 26.8° 29.3°

16* 20 20

28/12 28/12 39.5/19.5

90 90 128.0

<0.3 <1.0 <0.15

FTL-1064-100 FTL-1064-160 FTL-1064-254

Filters and Etalons

Wavelength (nm)

*Over 65x65 mm image size

6.21 FTL

Appendix Index

Multielement Lenses www. cvilaseroptics.com