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F-Theta Scan lens - made of Optical Glass

F-theta scan lenses are commonly used in conjunction with galvanometer scanning mirrors in laser engraving, cutting, and marking systems. The reason it being named as F-theta is due to the radial image height equals to focal length of the lens multiplied by the angle of the chief ray makes in the object space. Hence, from the image height, the distortion of the image can be calculated at each field of interest. Typically the F-theta distortion of this lens is kept less than 1% so that it produces a precise spot on the flat field on image plane.

 

Part No. EFL (mm) Scan Field (mm) Input Beam (mm) Focus Spot Size (um) Scan Angle (±°) Thread M1-M2 WD (mm) Window Size Wavelength (nm)
SL-2000-100-160 160.0 100x100 10.0 77.3 24.8 M55x1 13.70 179.6 64x2 2000
SL-2000-175-254 254.0 175x175 10.0 96.2 27.8 M55x1 13.70 281.7 90x3.5 2000
SL-1550-100-160 160.0 100x100 9.0 43.0 25.0 M85x1 14.00 175.6 68x3 1550
SL-1550-240-420 420.0 240x240 10.0 91.0 23.1 M85x1 13.00 504.3 82x3 1550
SL-1064-45-80 80.0 45x45 10.0 11.8 23.0 M55x1 13.00 91.3 47x2 1064
SL-1064-70-100 100.0 70x70 14.0 11.0 25.0 M85x1 14.00 98.8 76x3 1064
SL-1064-80-125-D15 125.0 80x80 15.0 17.5 26.4 M85x1 18.20 152.6 106x3 1064
SL-1064-56-125 125.0 56x56 15.0 16.5 18.6 M85x1 18.20 151.2 110x2.5 1064
SL-1064-70-160-D30 160.0 70x70 30.0 25.0 18.0 M100x1 35.00 172.3 116x3 1064
SL-1064-112-163 163.0 112x112 10.0 30.0 25.0 M85x1 20.00 184.9 76x3 1064
SL-1064-100-165-D25 165.0 100x100 25.0 18.3 22.5 M85x1 30.00 197.1 126x3 1064
SL-1064-120-280-170 170.0 120x120 14.0 26.5 29.0 M85x1 17.00 195.8 110x2.7 1064
SL-1064-160-210 210.0 160x160 10.0 50.0 25.0 M85x1 12.54 246.2 94x2.5 1064
SL-1064-140-210 210.0 140x140 14.0 24.5 25.0 M85x1 14.00 238.4 86x2.5 1064
SL-1064-100-254-D30 254.0 100x100 30.0 13.5 16.0 M85x1 30.00 303.3 110x2.5 1064
SL-1064-180-254 254.0 180x180 20.0 47.0 25.2 M85x1 20.00 295.0 120x3 1064
SL-1064-175-F254B 254.0 175x175 10.0 37.5 23.0 M85x1 14.00 280.0 75x2 1064
SL-1064-175-254 254.0 175x175 16.0 43.6 25.0 M85x1 20.00 288.9 97x2.5 1064
SL-1064-180-260 260.0 180x180 10.0 47.0 25.0 M85x1 22.00 304.7 97x2.5 1064
SL-1064-200-310-D25 310.0 200x200 25.0 24.5 26.0 M85x1 30.00 352.3 116x3 1064
SL-1064-205-330 330.0 205x205 14.0 50.0 25.0 M85x1 20.00 385.0 98x2.5 1064
SL-1064-300-420 419.8 300x300 14.0 50.5 29.0 M85x1 20.00 492.0 110x2.5 1064
SL-1064-500-815 815.0 500x500 24.0 50.0 25.0 M85x1 30.00 962.0 150x3 1064
SL-980-53-98 98.0 53x53 10.0 10.0 25.0 M85x1 13.00 114.8 68x2 980
SL-980-70-100 100.0 70x70 14.0 11.0 25.0 M85x1 14.00 98.0 76x3 980
SL-980-109-160 160.0 109x109 12.0 22.0 28.0 M85x1 12.00 186.1 64x2 980
SL-980-92-210-D30 210.0 92x92 30.0 33.5 20.0 M112x1 43.00 255.6 130x3 980
SL-980-130-210-D30 210.0 130x160 30.0 25.0 20.0 M112x1 43.00 255.8 130x3 980
SL-980-170-250-D30 250.0 170x170 30.0 30.0 25.0 M160x1 38.50 290.0 174x3 980
SL-980-209-400-D20 400.0 209x209 20.0 31.0 21.1 M85x1 26.00 485.9 90x2.5 980
SL-980-250-410-D30 410.0 250x250 30.0 24.0 25.0 M98x1 38.50 468.0 122x3 980
SL-980-280-420-D20 420.0 280x280 20.0 41.0 26.4 M85x1 25.60 465.3 104x3 980
SL-980-340-500-D20 498.4 340x340 20.0 125.5 26.8 M85x1 26.00 568.7 140x3 980
SL-980-400-635-D30 635.0 400x400 30.0 43.8 25.1 M120x1 36.50 734.0 148x4 980
SL-532-70-100 100.0 70x70 14.0 12.0 25.0 M85x1 14.00 100.9 74x2.5 532
SL-532-115-165 165.0 115x115 10.0 18.5 28.3 M85x1 13.00 183.5 74x2.5 532
SL-532-115-170 170.0 115x115 14.0 21.6 25.0 M85x1 17.00 195.4 100x3 532
SL-532-150-254 254.0 150x150 10.0 21.5 25.0 M85x1 16.00 280.0 97x3 532
SL-532-180-254 254.0 180x180 10.0 27.0 25.0 M85x1 20.00 303.3 86x2.5 532
SL-532-225-410 410.0 225x225 14.0 28.5 22.0 M85x1 20.00 445.5 80x4 532
SL-532-297-420 420.0 297x297 15.0 30.5 28.5 M85x1 17.00 477.7 112x3 532
SL-532-335-520 520.0 335x335 16.0 33.5 25.7 M85x1 24.00 599.2 118x3 532
SL-532-500-750 750.0 500x500 16.0 37.4 27.7 M85x1 20.00 911.2 152x3 532

 

Remark: The spot size is simulation result, it does not reflect the actual spot size on workpiece as the simulation does not consider the material properties and how the laser being absorbed during machining.