F-Theta Lens for Lasers

  • Update:Mar 26, 2017
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F-theta lenses are used in laser scanners (laser markers) and the laser wavelengths may be 355nm 266nm and other wavelengths. We can provide full range of f-theta lenses according to your applications.

Product Introduction

(1) 355nm Scan Lenses

STS Series f-theta Lenses at 355nm
Model F.L. mm WD mm Scan area mm (round/square) Scan Angle maxi E.P. mm Spot µm D1 mm D2 mm Screw
STY-355-70-100 100 122 Φ100/70×70 ±25º 8 12 33 90 M85×1
STY-355-110-160 160 185 Φ155/110×110 ±25º 8 15 33 90 M85×1
STY-355-110-160-B 160 187 Φ155/110×110 ±25º 8 15 33 90 M85×1
Part No. EFL (mm) Scan Angle (±°) Scan Length (mm) Scan Field (mm) Ent. pupil (mm) Average spot Size (um) Length (mm) Working Distance (mm)
STY-355-60-100-WT 100.0 25° 85.0 60x60 6.0 15.5 56.0 130.5
STY-355-76-108-WT 108.3 28.4° 107.7 76x76 6.0 - 49.0 146.0
STY-355-109-174-WT 173.9 25° 153.2 109x109 6.0 - 36.8 218.4
STY-355-112-160-WT 160.0 20° 158.0 112x112 7.0 13.5 50.0 177.79
STY-355-112-160Q-WT 160.0 29° 160.0 112x112 6.0 18 50.36 206.6
STY-355-155-250-WT 250.3 25.4° 219.2 155x155 10.0 - 61.0 309.6
STY-355-160-254-WT 254.0 25° 220.0 160x160 12.0 22.0 55.0 311.0
STY-355-130-269-WT 269.3 19.0° 183.0 130x130 4.0 - 47.0 276.1
STY-355-180-290-WT 290.0 25.5° 255.0 180x180 20.0 40.0 65.0 332.5
STY-355-250-410-WT 410.0 25.° 354.0 250x250 10.0 7.0 46.8 488.2
STY-355-320-580-WT 580.0 22° 455.0 320x320 10.0 27.0 38.0 668.0
STY-355-350-580-WT 580.0 25° 495.0 350x350 15.0 24.0 46.0 689.0
STY-355-500-810-WT 810.0 28° 850.0 500x500 24.0 55.0 57.0 880.0
STY-355-440-831-WT 831.1 21.4° 624.5 440x440 14.0 - 62.5 983.2
STY-355-470-912-WT 919.2 20.8° 678.0 470x470 14.0 - 40.0 1032.0

STS Series Standard ƒ-Theta Lenses at  355nm
Part No. FL (mm) SA (±°) SL (mm) SAR (mm x mm) MI (mm) AS (mm) Length (mm) MO (mm) MT WD (mm) PW
STS-3100/075 108.34 28.40 107.70 76x76 6.00 17.14 49.00 89 M85x1 145.95 Yes
STS-3160/075 173.90 25.00 153.15 109x109 6.00 21.10 36.75 89 M85x1 218.40 Yes
STS-3260/075 250.26 25.40 219.17 155x155 10.00 28.05 61.00 105 M85x1 309.62 Yes
STS-0257/075 269.29 19.00 183.00 130x130 4.00 13.50 47.00 900 M85x1 276.08 ---
STS-1330/075 328.18 25.20 303.39 212x212 14.00 36.00 108.4 1220 M85x1 260.21 Yes
STS-0580/075 580.80 22.00 455.60 320x320 10.00 39.00 37.96 890 M85x1 671.66 Yes
STS-0815/075 831.05 21.40 624.49 440x440 14.00 25.00 62.50 900 M85x1 983.23 Yes
STS-0920/075 919.21 20.80 678.02 470x470 14.00 40.97 40.00 89 M85x1 1032.00 Yes
Remark: FL=focal length; SA=scan angle; SL=scan length; SAR=scan area; MI=max. input beam diameter; AS=aperture stop; MO=max. outside diameter; MT=mounting thread; WD=working distance; PW=protective windows.
STS Series Telecentric ƒ-Theta Lenses at 355nm
Part No. FL (mm) SA (±°) SL (mm) SAR (mm x mm) MI (mm) AS (mm) Length (mm) MO (mm) MT WD (mm) PW
STS-4031/075 32.04 8.00 8.90 6x6 10.00 16.50 39.85 90 M85x1 28.99 ----
STS-3050/075 56.01 15.20 29.35 20x20 6.00 19.50 39.79 87 M85x1 75.89 Yes
STS-4110/075 109.38 24.20 89.79 63x63 6.00 33.07 86.00 121 M85x1 154.57 Yes
STS-4160/075 167.22 15.60 90.05 64x64 10.00 37.20 133.00 121 M85x1 264.36 Yes
STS-5256/075 256.82 14.60 124.46 86x86 6.00 24.00 173.50 138 M85x1 145.16 ----

(2) Wavelength 266nm

STS Series Standard ƒ-Theta Lenses at 266nm
Part No. FL (mm) SA (±°) SL (mm) SAR (mm x mm) MI (mm) AS (mm) Length (mm) MO (mm) MT WD (mm) PW
STS-3100/199 101.49 29.20 100.68 73x73 5.00 17.14 49.00 89.00 M85x1 136.52 Yes
STS-3160/199 162.31 25.00 142.66 105x105 5.00 21.10 36.75 89.00 M85x1 204.47 Yes
STS-0256/199 249.50 24.20 218.90 148x148 4.00 13.50 47.00 90.00 M85x1 254.00 ----
Remark: FL=focal length; SA=scan angle; SL=scan length; SAR=scan area; MI=max. input beam diameter; AS=aperture stop; MO=max. outside diameter; MT=mounting thread; WD=working distance; PW=protective windows.
STS Series Telecentric ƒ-Theta Lenses at 266nm
Part No. FL (mm) SA (±°) SL (mm) SAR (mm x mm) MI (mm) AS (mm) Length (mm) MO (mm) MT WD (mm) PW
STS-4030/199 30.10 14.60 15.00 10x10 6.00 12.72 55.54 47 M85x1 28.90 Yes
STS-3050/199 53.46 16.00 29.40 20x20 6.00 17.80 39.79 87 M85x1 71.70 ----
STS-4105/199 99.30 21.00 72.08 50x50 5.00 26.90 86.20 121 M85x1 142.17 Yes
STS-4162/199 159.78 16.20 90.27 64x64 10.00 32.30 133.00 121 M85x1 253.67 Yes

STY Series f-theta Lenses at 266nm
Part No. EFL (mm) Scan Angle (±°) Scan Length (mm) Scan Field (mm) Ent. pupil (mm) Average spot Size (um) Length (mm) Working Distance (mm)
STY-266-70-100-WT 100.0 28° 95.0 70x70 5.0 8.0 49.0 137.0
STY-266-110-160-WT 160.0 28° 160.0 110x110 5.0 10.0 36.7 200.0
STY-266-90-254-WT 254.0 18° 156.0 90x90 4.0 16.0 47.0 25.0

Scan Lenses (f-theta Lenses) at 193nm, 248nm, 405nm, 450-650nm, 633nm, 670nm, 808nm, 980nm, 1550nm

Telecentric ƒ-theta lenses focus the laser beam so it is almost perpendicular (within 1 degree) to the work surface over the entire scan field. This ensures the spot is round even in the corners of the scan field and if holes or channels are machined, they are perpendicular to the work surface. Color corrected ƒ-Theta lenses are designed to accommodate multiple wavelengths. Normally each wavelength would focus to a different point on the work surface. In a color corrected lens the focal point for each wavelength coincide. This is achieved by schlechtging an ideal combination of different glass types for the various lens elements in the lens. Color corrected ƒ-theta lens are primarily used for simultaneously viewing the work surface through the scan lens with a camera while laser processing. Another common application for color corrected scan lenses are for use in confocal scan microscopes which require a broad range of visible wavelengths.
Standard ƒ-Theta Lenses for 808nm

Part No. FL (mm) SA (±°) SL (mm) SAR (mm x mm) MI (mm) AS (mm) Length (mm) MO (mm) MT WD (mm) PW
STS-0101/094 97.53 28.00 75.71 53x53 10 18.00 40.00 90.00 M85x1 108.90 Yes
STS-0163/094 158.28 27.60 156.21 108x108 12 20.80 43.30 89.00 M85x1 176.42 Yes
STS-2163/094 158.88 26.80 150.05 103x103 20 29.00 66.00 128.00 M85x1 187.26 Yes
STS-0202/094 196.85 19.00 130.88 90x90 30 43.00 83.10 132.00 M85x1 237.41 Yes
STS-3254/094 248.66 19.20 168.83 115x115 30 47.93 75.50 130.00 M85x1 290.03 Yes
STS-0300/094 294.17 25.00 258.39 175x175 20 35.00 78.00 128.00 M85x1 346.21 Yes
STS-0400/094 397.87 21.40 303.07 213x213 20 33.00 53.00 118.00 M85x1 486.87 ---
STS-0420/094 410.93 25.20 374.59 250x250 30 54.64 52.00 136.00 M132x1 468.59 ---
STS-0555/094 556.24 21.40 426.26 290x290 25 40.00 65.40 130.00 M85x1 628.87 ---
STS-0635/094 636.51 25.60 594.02 415x415 30 58.25 48.50 133.00 M110x1 709.51 ---
STS-0825/094 803.55 28.00 642.68 450x450 30 54.00 58.00 130.00 M102x1 875.96 Yes

Remark: FL=focal length; SA=scan angle; SL=scan length; SAR=scan area; MI=max. input beam diameter; AS=aperture stop; MO=max. outside diameter; MT=mounting thread; WD=working distance; PW=protective windows.
Telecentric ƒ-Theta Lenses for 808nm

Part No. FL (mm) SA (±°) SL (mm) SAR (mm x mm) MI (mm) AS (mm) Length (mm) MO (mm) MT WD (mm) PW
STS-0053/094 56.33 11.00 21.61 14x14 10.00 17.50 55.15 90.00 M85x1 69.12 Yes
STS-0075/094 76.78 9.80 26.40 19x19 10.00 32.60 45.00 70.00 TK60 103.63 ---
STS-0080/094 79.55 21.20 58.15 39x39 25.00 27.70 83.40 107.00 M85x1 79.53 Yes
STS-5100/094 105.63 26.80 96.39 68x68 12.00 35.00 85.50 126.00 M85x1 135.25 Yes

Standard ƒ-Theta Lenses for 980nm

Part No. FL (mm) SA (±°) SL (mm) SAR (mm x mm) MI (mm) AS (mm) Length (mm) MO (mm) MT WD (mm) PW
STS-0101/094 99.46 28.00 75.71 53x53 10.00 18.00 40.00 90.00 M85x1 111.17 Yes
STS-0163/094 161.38 27.60 156.21 108x108 12.00 20.80 43.30 89.00 M85x1 179.88 Yes
STS-2163/094 162.00 26.80 150.05 103x103 20.00 29.00 66.00 128.00 M85x1 191.26 Yes
STS-0202/094 200.40 19.00 130.88 90x90 30.00 43.00 83.10 132.00 M85x1 241.65 Yes
STS-3254/094 253.12 19.20 168.83 115x115 30.00 47.93 75.50 130.00 M85x1 295.61 Yes
STS-0300/094 298.52 25.00 258.39 175x175 20.00 35.00 78.00 128.00 M85x1 351.32 Yes
STS-0400/094 400.16 21.40 303.07 213x213 20.00 33.00 53.00 118.00 M85x1 489.16 ---
STS-0420/094 419.58 25.20 374.59 250x250 30.00 54.64 52.00 136.00 M132x1 478.65 ---
STS-0555/094 565.20 21.40 426.26 290x290 25.00 40.00 65.40 130.00 M85x1 638.85 ---
STS-0635/094 649.59 25.60 594.02 415x415 30.00 58.25 48.50 133.00 M110x1 724.17 ---
STS-0825/094 812.18 28.00 642.68 450x450 30.00 54.00 58.00 130.00 M102x1 885.11 Yes

Remark: FL=focal length; SA=scan angle; SAR=scan area; MI=max. input beam diameter; MO=max. outside diameter; MT=mounting thread; WD=working distance; PW=protective windows.
Telecentric ƒ-Theta Lenses for 980nm

Part No. FL (mm) SA (±°) SL (mm) SAR (mm x mm) MI (mm) AS (mm) Length (mm) MO (mm) MT WD (mm) PW
STS-0053/094 57.39 11.00 21.61 14x14 10 17.50 55.15 90.00 M85x1 70.56 Yes
STS-0075/094 78.18 9.80 26.40 19x19 10 32.60 45.00 70.00 TK60 105.56 ---
STS-0080/094 80.96 21.20 58.15 39x39 25 27.70 83.40 107 M85x1 81.30 Yes
STS-5100/094 107.19 26.80 96.39 68x68 12 35.00 85.50 126 M85x1 137.17 Yes

Standard ƒ-Theta Lenses at 633nm

Part No. FL (mm) SA (±°) SL (mm) SAR (mm x mm) MI (mm) AS (mm) Length (mm) MO (mm) MT WD (mm)
STS-0155/123 154.63 11.00 59.28 40x40 15.00 40.00 50.00 70.00 No thread 192.00

Remark: FL=focal length; SA=scan angle; SL=scan length; SAR=scan area; MI=max. input beam diameter; AS=aperture stop; MO=max. outside diameter; MT=mounting thread; WD=working distance; PW=protective windows.
Standard ƒ-Theta Lenses at 633nm

Part No. FL (mm) SA (±°) SL (mm) SAR (mm x mm) MI (mm) AS (mm) Length (mm) MO (mm) MT WD (mm)
STS-0075/123 74.79 10.40 27.00 19X19 10.00 31.00 45.00 70.00 No thread 100.30
STS-1088/093 87.48 15.80 48.22 34X34 7.00 34.00 55.00 98.00 TK87 116.61
STS-0093/123 89.02 17.00 51.96 36X36 16.00 34.00 62.05 83.00 No thread 113.37
STS-1100/123 100.59 12.00 42.16 30X30 10.00 53.30 92.00 155.00 TK145 221.34
STS-1114/093 156.06 20.00 108.80 77X77 10.00 53.30 92.00 155.00 TK145 223.27
STS-0200/123 203.55 15.00 105.79 75X75 20.00 116.50 93.95 142.00 TK133 235.97

Standard ƒ-Theta Lenses at 670nm

Part No. FL (mm) SA (±°) SL (mm) SAR (mm x mm) MI (mm) AS (mm) Length (mm) MO (mm) MT WD (mm)
STS-1088/093 87.96 15.80 48.50 34X34 7.00 34.40 55.00 98.00 TK87 116.27
STS-1114/093 157.32 20.00 109.65 77X77 10.00 53.30 92.00 155.00 TK145 223.00
STS-040/093 157.47 19.60 107.73 76X76 5.00 53.40 90.00 155.00 TK145 225.22

Remark: FL=focal length; SA=scan angle; SAR=scan area; MI=max. input beam diameter; MO=max. outside diameter; MT=mounting thread; WD=working distance; PW=protective windows.

Standard ƒ-Theta Lenses at  405nm

Part No. FL (mm) SA (±°) SL (mm) SAR (mm x mm) MI (mm) AS (mm) Length (mm) MO (mm) MT WD (mm) PW
STS-3160/173 175.86 25 154.76 110x110 6.00 21.10 36.75 89 M85x1 220.73 Yes
STS-0375/173 375.32 31 420.36 300x300 10.00 35.50 48.00 116 M92x1 447.46 ----
STS-0580/173 594.12 22 466.36 326x326 10.00 39.00 37.96 89 M85x1 686.46 Yes

Remark: FL=focal length; SA=scan angle; SL=scan length; SAR=scan area; MI=max. input beam diameter; AS=aperture stop; MO=max. outside diameter; MT=mounting thread; WD=working distance; PW=protective windows.

Telecentric ƒ-Theta Lenses at 405nm

Part No. FL (mm) SA (±°) SL (mm) SAR (mm x mm) MI (mm) AS (mm) Length (mm) MO (mm) MT WD (mm) PW
STS-8050/173 55.03 22.80 42.10 29x29 7.50 16.20 52.00 90.00 M85x1 67.20 ----

ƒ-Theta Lens for Mask Imaging for Excimer Laser at 248nm

Part No. FL (mm) SA (±°) Magnification SAR (mm x mm) MI (mm) Length (mm) MO (mm) MT WD (mm)
STS-4200/198 221.10 14.00 0.33 200X200 10X10 38.6 88 M85x1 303.60

Remark: FL=focal length; SA=scan angle; SAR=scan area; MI=max. input beam diameter; MO=max. outside diameter; MT=mounting thread; WD=working distance; PW=protective windows.

Standard ƒ-Theta Lenses for Excimer Laser at 193nm

Part No. FL (mm) SA (±°) SL (mm) SAR (mm x mm) MI (mm) AS (mm) Length (mm) MO (mm) MT WD (mm)
STS-4056/198 56 18.8 25X25 7 15 34 87 M85X1 71.36 Yes
STS-4057/198 66.24 19.2 30X30 7 15 34 87 M85X1 83.78 Yes

Remark: FL=focal length; SA=scan angle; SL=scan length; SAR=scan area; MI=max. input beam diameter; AS=aperture stop; MO=max. outside diameter; MT=mounting thread; WD=working distance; PW=protective windows.

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