Ronar-Smith® Beam Expanders

Ronar-Smith® Laser Beam Expanders demand the highest quality in beam broadening and collimation without compromising on the expanded beam quality. We value safety as much as we do and you can be assured that all our beam expanders are subjected to rigorous testing prior to market sales. All our beam expanders are telescopic by nature and require a collimated beam input while delivering an expanded collimated beam at the output. 
 *G type : Galilean design without internal focus 

Don’t limit what you see. Customization may be available for this product. Let us know your specifications in the RFQ form. You may also browse our manufacturing capabilities.

Part NumberWavelength (nm)MagnificationTypeInput CA (mm)Output CA (mm)Mounting ThreadMax. Outer Dia (mm)Total Length (mm)Max. Input Beam Dia (1/e2) (mm)
BXZ-2000-1-3X *NEW*20001-3XManual Zoom10.020.0M36x141.0136.97.0@1X 5.0@3X
BXZ-1980-1-3X-CON *NEW*19801-3XManual Zoom21.039.0M53x0.7559.0161.010.0
BEX-2000-1.5X20001.5XFixed8.031.0M30x146.085.0-
BEX-2000-2X20002XFixed8.031.0M30x146.085.0-
BEX-2000-3X20003XFixed8.031.0M30x146.085.0-
BEX-2000-4X20004XFixed8.031.0M30x146.085.0-
BEX-2000-5X20005XFixed8.031.0M30x146.085.0-
BEX-2000-6X20006XFixed8.031.0M30x146.085.0-
BEX-2000-7X20007XFixed8.031.0M30x146.085.0-
BEX-2000-8X20008XFixed8.031.0M30x146.085.0-
BEX-2000-10X200010XFixed6.031.0M30x146.085.0-
BEX-1550-2.5X15502.5XFixed8.023.0M22x0.7534.065.2-
BEX-1550-3X15503XFixed8.023.0M22x0.7534.070.6-
BEX-1550-7X15507XFixed10.025.0-32.075.0-
BEX-1550-8X15508XFixed10.030.0M22x0.7543.096.0-
BEX-1550-10X155010XFixed10.058.0-65.098.0-
BEX-1550-20X155020XFixed7.049.0M22x0.7560.0120.0-
BEX-1064-1X-MOT10641XMotorized14.018.0--95.08.0
BEX-1064-1X-V210641XFixed18.020.0M28x133.063.8-
BEX-1064-1.2X10641.2XFixed16.023.0M22x0.7529.054.9-
BEX-1064-1.5X10641.5XFixed15.523.0M22x0.7525.044.5-
BEX-1064-1.5X-C10641.5XFixed12.024.0C-mount35.067.9-
BEX-1064-2X1i10642XFixed15.023.0M22x0.7529.050.0-
BEX-1064-2X-C10642XFixed8.024.0C-mount35.067.9-
BEX-1064-2.5X110642.5XFixed11.023.0M22x0.7529.084.8-
BEX-1064-2.8X10642.8XFixed9.024.0M13x0.7530.083.5-
BEX-1064-3Xi10643XFixed10.020.0M22x0.7526.060.0-
BEX-1064-3X-C10643XFixed10.024.0C-mount35.067.9-
BEX-1064-4Xi10644XFixed10.022.0M22x0.7529.081.1-
BEX-1064-5X-D810645XFixed13.536.0M30x147.0113.08.0
BEX-1064-5X10645XFixed10.023.0M22x0.7529.072.0-
BEX-1064-5Z110645XFixed10.032.0M30x146.080.0-
BEX-1064-6Xi10646XFixed5.022.0M22x0.7529.071.2-
BEX-1064-7X10647XFixed6.023.0M22x0.7529.076.4-
BEX-1064-8Xi10648XFixed10.023.0M22x0.7529.077.3-
BEX-1064-10X-V1106410XFixed8.022.0M22x0.7529.083.5-
BEX-1064-13X-D4
106413XFixed12.068.0M30x181.0198.04.0
BEX-1064-15X106415XFixed7.528.0M30x145.099.1-
BEX-1064-15X-D4
106415XFixed12.068.0M30x181.0198.04.0
BEX-1064-20X106420XFixed8.028.0M22x0.7545.091.2-
BEX-1064-40X106440XFixed8.0128.0M30x1157.0188.7-
BEX-633-3X6333XFixed10.022.0M22x0.7533.063.7-
BEX-633-5X6335XFixed8.023.0M22x0.7533.0110.0-
BEX-633-8X6338XFixed11.023.5M28x0.5535.0117.5-
BEX-633-10X63310XFixed8.023.0M22x0.7530.0146.0-
BEX-633-20X63320XFixed8.076.0M22x0.7530.0198.0-
BEX-633-40X63340XFixed8.0100.0M22x0.7540.0246.0-
BEX-633-50X63350XFixed10.081.0M22x0.7530.0304.0-
BEX-532-1X5321XFixed15.018.0M30x136.063.0-
BEX-532-1.5X5321.5XFixed10.023.0M22x0.7530.068.8-
BEX-532-2X2-V15322XFixed8.023.0M22x0.7533.061.5-
BEX-532-3Xi5323XFixed8.023.0M22x0.7530.083.0-
BEX-532-4Xi5324XFixed6.023.0M22x0.7530.083.0-
BEX-532-5Xi5325XFixed8.024.0M22x0.7530.081.5-
BEX-532-6X25326XFixed5.017.0-25.070.6-
BEX-532-10Xi53210XFixed8.024.0M22x0.7530.085.3-
BEX-532-15X53215XFixed6.032.0M30x130.085.0-
BEX-532-20X53220XFixed6.038.0M30x140.095.2-
BEX-532-25X-D153225XFixed10.036.0M40x0.7550.0153.01.0
BEX-450-20X45020XFixed6.031.0M43x0.546.097.01.4
BEX-450-10X45010XFixed9.028.0M43x0.546.085.62.5
BEX-450-7X4507XFixed20.026.0-38.0128.02.0
BEX-450-5X4505XFixed8.028.0M43x0.546.078.02.0
BEX-450-3X4503XFixed8.018.0M27x0.7528.052.53.0
BEX-450-2X4502XFixed8.018.0M27x0.7528.052.53.0
BEX-450-1.5X4501.5XFixed8.018.0M43x0.528.052.55.0
BEX-405-1.5X4051.5XFixed8.026.0M30x146.062.3-
BEX-405-2X4052XFixed8.026.0M30x146.062.3-
BEX-405-3X-V14053XFixed8.018.0M22x0.7528.052.5-
BEX-405-5X4055XFixed8.028.0M30x146.078.0-
BEX-405-7X-V14057XFixed8.026.0M30x136.064.0-
BEX-405-10X40510XFixed9.028.0M30x146.085.6-
BEX-405-20X40520XFixed6.031.0M30x146.077.0-
BEX-355-1X3551XFixed15.018.0M30x136.061.0-
BEX-355-1.5X3551.5XFixed6.024.0M30x146.076.5-
BEX-355-2X-V13552XFixed8.028.0M30x146.082.07.0
BEX-355-2X23552XFixed6.023.0M22x0.7533.057.0-
BEX-355-2.5X3552.5XFixed12.023.4M30x136.061.0-
BEX-355-3X-D13553XFixed4.05.0M13x0.516.038.91.2
BEX-355-3X3553XFixed6.024.0M30x146.077.3-
BEX-355-4X-V13554XFixed8.028.0M30x146.082.0-
BEX-355-5X3555XFixed6.028.0M30x146.073.5-
BEX-355-7X3557XFixed6.028.0M30x146.088.1-
BEX-355-7X-D13557XFixed4.09.6M14x0.516.054.01.0
BEX-355-8X3558XFixed6.028.0M30x146.084.0-
BEX-355-10X-V135510XFixed9.028.0M30x146.097.02.0
BEX-355-10X-D0.835510XFixed8.018.0M22x0.7528.071.50.8
BEX-355-10X-D135510XFixed4.013.6M18x0.520.050.01.0
BEX-355-15X-D135515XFixed4.019.0M24x0.527.069.01.0
BEX-355-20X-V135520XFixed10.028.0M30x146.097.0-
BEX-355-30X35530XFixed8.036.0M30x145.0173.01.0
BEX-266-1.5X2661.5XFixed8.024.0M22x0.7530.063.7-
BEX-266-2X2662XFixed8.024.0M22x0.7530.073.0-
BEX-266-3X2663XFixed10.023.0M22x0.7530.068.7-
BEX-266-5X2665XFixed10.023.0M22x0.7530.069.6-
BEX-266-10X26610XFixed6.023.0M22x0.7530.095.6-
BEX-266-20X26620XFixed1.530.0M22x0.7530.096.0-
BEX-3.9-14X390014XFixed11.049.0M30x160.0113.03.0
BEX-9.4-1X94001XFixed16.018.0-20.044.1-
BEX-9.4-2X94002XFixed16.523.0-20.051.0-
BEX-9.4-2.5X94002.5XFixed13.021.0-20.056.0-
BEX-9.4-3X194003XFixed10.022.0-20.032.5-
BEX-9.4-3X294003XFixed18.030.0-20.061.0-
BEX-9.4-4Z194004XFixed10.020.0-20.069.0-
BEX-9.4-5Z194005XFixed13.023.0-20.037.0-
BEX-10.6-1X106001XFixed16.018.0-20.027.9-
BEX-10.6-2Z1-V1106002XFixed10.723.0M22x0.7532.054.5-
BEX-10.6-2Z3i-V1106002XFixed15.528.0M22x0.7536.059.0-
BEX-10.6-2.5Z2i106002.5XFixed16.021.0-20.060.0-
BEX-10.6-3Z2i106003XFixed10.020.0M33x0.7540.054.9-
BEX-10.6-3Z5i106003XFixed16.036.0M22x0.7528.059.0-
BEX-10.6-3Z6i106003XFixed15.528.0M22x0.7528.059.0-
BEX-10.6-3.5Z106003.5XFixed10.516.0M22x0.7528.071.0-
BEX-10.6-4Z1i106004XFixed10.020.0M33x0.7540.069.8-
BEX-10.6-4Z2i106004XFixed15.028.0M22x0.7528.071.0-
BEX-10.6-5Z1i106005XFixed13.023.0M22x0.7530.070.0-
BEX-10.6-6Zi106006XFixed11.026.0M33x0.7540.054.9-
BEX-10.6-6Z1i106006XFixed11.036.0M22x0.7532.050.0-
BEX-10.6-8Z1106008XFixed13.033.0M22x0.7536.048.1-
BEX-10.6-8Z2106008XFixed10.523.4M22x0.7528.057.4-
BEX-10.6-10Z1i1060010XFixed10.036.0M22x0.7528.061.0-
BEX-10.6-12X1060012XFixed10.036.0M22x0.7544.075.5-
BEX-10.6-15X1060015XFixed10.040.0M22x0.7536.060.0-
BEX-10.6-20X1060020XFixed9.052.0M25x0.7520.027.9-
BEX-10.6-30X1060030XFixed16.097.0M41x0.75108.0145.03.0
BEX-10.6-1.5Z106001.5XFixed12.014.0M22x0.7528.071.0-
BEX-10.6-2Z4106002XFixed10.015.0M22x0.7536.067.3-
BEX-10.6-2.5Z106002.5XFixed10.015.0M22x0.7530.070.0-
BEX-10.6-2.5Z1106002.5XFixed10.016.0M22x0.7532.076.0-
BEX-10.6-3Z1106003XFixed10.016.0M22x0.7544.075.0-
BEX-10.6-3.3Z1106003.3XFixed10.015.0M22x0.7544.0121.7-
BEX-10.6-3Z3T106003XFixed10.016.0M16x0.7520.037.0-
BEX-10.6-3.5Z106003.5XFixed10.516.0M22x0.7544.0125.0-
BEX-10.6-4Z106004XFixed8.015.0M30x150.0109.2-
BEX-10.6-5Z106005XFixed10.016.0M30x153.0118.4-
BEX-10.6-6Z2106006XFixed10.015.0M30x165.0144.0-
BET0101.5106001.5XFixed23.028.0M30x139.675.2-
BET0102A106002XFixed23.028.0M30x139.675.6-
BET0102.5106002.5XFixed23.028.0M30x139.675.6-
BET0103A106003XFixed23.028.0M30x139.669.9-
BET0104A106004XFixed23.028.0M30x139.675.2-
BET0105A106005XFixed23.028.0M30x139.672.1-
BET0106A106006XFixed23.028.0M30x139.672.1-
BET0107A106007XFixed23.028.0M30x139.679.1-
BET0108A106008XFixed23.028.0M30x139.677.4-
BET0109A106009XFixed23.028.0M30x139.688.0-
BET0110A1060010XFixed18.030.0M30x137.688.0-
BET0101.5-WC106001.5XWater Cool23.028.0M32x0.7550.072.0-
BET0102A-WC106002XWater Cool23.028.0M32x0.7550.072.0-
BET0102.5-WC106002.5XWater Cool23.028.0M32x0.7550.072.0-
BET0103A-WC106003XWater Cool23.028.0M32x0.7550.072.0-
BET0104A-WC106004XWater Cool23.028.0M32x0.7550.072.0-
BET0105A-WC106005XWater Cool23.028.0M32x0.7550.072.0-
BET0106A-WC106006XWater Cool23.028.0M32x0.7550.072.0-
BET0107A-WC106007XWater Cool23.028.0M32x0.7550.072.0-
BET0108A-WC106008XWater Cool23.028.0M32x0.7550.072.0-
BET0110A-WC1060010XWater Cool23.028.0M32x0.7550.072.0-
BXZ-1550-1-4X15501X - 4XManual Zoom23.028.0--126.813.0@1X 12.0@4X
BXZ-1550-2-8X-D6
15502X - 8XManual Zoom15.055.0M32x0.7587.0218.011.0@3X 6.0@8X
BXZ-1064-1-3X-A110641X - 3XManual Zoom23.038.0--131.310.0@1X 8.0@3X
BXZ-1064-1-4X10641X - 4XManual Zoom23.028.0--176.03.0@1X 2.0@4X
BXZ-1064-1-4X-G-48OP
10641X - 4XManual Zoom22.048.0M72x182.0241.013.0@1X 9.0@4X
BXZ-1064-1-8V10641X - 8XManual Zoom12.033.0M51x0.7554.0162.05.0@1X 3.0@8X
BXZ-1064-2-4X-G710642X - 4XManual Zoom12.034.0--187.57.0@2X 6.5@4X
BXZ-1064-2-8X-A10642X - 8XManual Zoom16.060.0M34x0.75-212.78.0@2X 5.0@8X
BXZ-1064-2-8V10642X - 8XManual Zoom12.033.0M51x0.7554.0158.55.0@2X 3.0@8X
BXZ-1064-2-8X-G-V210642X - 8XManual Zoom, Galilean type without internal focus12.032.0M53 x 0.7564.0220.06.0@2X 2.5@8X
BXZ-1064-2-10X10642X - 10XManual Zoom23.035.0--172.08.0@2X 3.0@10X
BXZ-1064-1-3X-G10641X - 3XManual Zoom23.026.0--120.09.0@1X 5.0@3X
BXZ-1064-0.5-2X-D10-CON10640.5X - 2XManual Zoom18.032.0M51x0.7555.5150.010.0
BXZ-980-1-3X-A1-CON9801X - 3XManual Zoom19.037.0M55x0.7560.0141.510.0
BXZ-532-1-3X5321X - 3XManual Zoom23.023.0--110.06.0@1X 5.5@3X
BXZ-532-1-4X5321X - 4XManual Zoom23.028.0--141.86.0@1X 4.0@4X
BXZ-532-1-8V5321X - 8XManual Zoom12.033.0M51x0.7554.0162.03.0@1X 3.0@8X
BXZ-532-2-6X5322X - 6XManual Zoom23.011.0--89.03.0@2X 1.0@6X
BXZ-532-2-8V5322X - 8XManual Zoom12.033.0M51x0.7554.0158.55.0@2X 2.0@8X
BXZ-532-2-10X5322X - 10XManual Zoom23.035.0--172.08.0@2X 3.0@10X
BXZ-532-1-3X-G5321X - 3XManual Zoom23.026.0--120.09.0@1X 5.0@3X
BXZ-532-1-5X-G35321X - 5XManual Zoom23.028.0--246.06.0@1X 3.0@5X
BXZ-532-2-8X-G-V25322X - 8XManual Zoom, Galilean type without internal focus12.032.0M53x0.7564.0220.06.0@2X 2.5@8X
BXZ-355-1-3X3551X - 3XManual Zoom23.038.0--131.06.0@1X 5.0@3X
BXZ-355-1-4X3551X - 4XManual Zoom23.028.0--138.05.0@1X 4.0@4X
BXZ-355-1-8V3551X - 8XManual Zoom12.033.0M51x0.7554.0162.03.5@1X 2.5@8X
BXZ-355-2-4X-G73552X - 4XManual Zoom12.034.0--179.57.0@2X 6.0@4X
BXZ-355-2-8V3552X - 8XManual Zoom12.033.0M51x0.7554.0158.54.0@2X 2.0@8X
BXZ-355-2-8X-QA3552X - 8XManual Zoom23.060.0--200.86.0@2X 4.0@8X
BXZ-355-2-10X3552X - 10XManual Zoom23.035.0--172.08.0@2X 3.0@10X
BXZ-355-1-3X-G3551X - 3XManual Zoom23.026.0--120.09.0@1X 5.0@3X
BXZ-355-2-8X-G-V23552X - 8XManual Zoom, Galilean type without internal focus12.032.0M53x0.7564.0220.06.0@2X 2.5@8X
BXZ-266-1-7X2661X - 7XManual Zoom23.032.0--191.85.0@1X 3.0@7X
BXZ-266-2-7X2662X - 7XManual Zoom23.032.0--180.35.0@2X 3.0@7X
BXZ-257-1-5X-G4
2571X -5XManual Zoom12.028.0M54x0.7565.0199.04.0
BXZ-9.4-0.25-2X94000.25X - 2XManual Zoom23.038.0--119.910.0@0.5X 10.0@2X
BXZ-9.4-0.3-1X94000.3X - 1XManual Zoom23.014.0--82.39.0@0.3X 10.0@1X
BXZ-9.4-0.5-3X94000.5X - 3XManual Zoom23.038.0--138.010.0@0.5X 8.0@3X
BXZ-9.4-1-3X94001X - 3XManual Zoom23.030.0--126.49.0@1X 6.0@3X
BXZ-9.4-1-4X94001X - 4XManual Zoom23.048.0--140.910.0@1X 8.0@4X
BXZ-9.4-2-8X94002X - 8XManual Zoom23.036.0--172.06.0@2X 3.0@8X
BXZ-9.4-0.5-3X-G894000.5X - 3XManual Zoom23.058.0--383.08.0@0.5X 5.0@3X
BXZ-9.4-1-4X-G794001X - 4XManual Zoom23.049.0--252.07.0@1X 3.0@4X
BXZ-9.6-1-4X-V296001X -4XManual Zoom17.038.0M55 x 0.75-160.0-
BXZ-10.6-0.25-2X106000.25X - 2XManual Zoom23.030.0M50 x150.0120.010.0@0.5X 10.0@2X
BXZ-10.6-0.5-3X106000.5X - 3XManual Zoom23.038.0--138.010.0@0.5X 8.0@3X
BXZ-10.6-1-3X106001X - 3XManual Zoom18.030.0--126.49.0@1X 6.0@3X
BXZ-10.6-1-4X-B106001X - 4XManual Zoom18.048.0M66 x 0.75-140.910.0@1X 8.0@4X
BXZ-10.6-1-4X-V2106001X - 4XManual Zoom17.038.0M55 x 0.75-160.0-
BXZ-10.6-2-6X-A106002X - 6XManual Zoom23.028.0--213.03.5@2X 3.0@6X
BXZ-10.6-2-8X106002X - 8XManual Zoom23.036.0--182.05.0@2X 3.0@8X
BXZ-10.6-1-4X-G106001X - 4XManual Zoom23.028.0--150.06.0@1X 4.0@4X
BXZ-10.6-1.5-3X-G9106001.5X - 3XManual Zoom23.038.0--114.57.0@1.5X 9.0@3X
BXZ-1550-1-4X-MOT15501X - 4XMotorized Zoom23.028.0--277.013.0@1X 12.0@4X
BXZ-1550-0.5-5X-MOT15500.5X - 5XMotorized Zoom23.040.0--225.94.0@0.5X 2.0@5X
BXZ-1064-0.5-2X-D10-MOT10640.5X - 2XMotorized Zoom18.032.0--150.010.0
BXZ-1064-1-3X-MOT10641X - 3XMotorized Zoom23.028.0--179.28.0@1X 6.0@3X
BXZ-1064-1-8X-MOT10641X - 8XMotorized Zoom23.032.0--159.06.0@1X 3.0@8X
BXZ-532-1-4X-G-MOT5321X - 4XMotorized Zoom23.018.0--168.05.0@1X 2.0@4X
BXZ-532-1-8X-MOT5321X - 8XMotorized Zoom23.032.0--159.06.0@1X 2.0@8X
BXZ-355-1-8X-MOT3551X - 8XMotorized Zoom23.032.0--136.04.0@1X 2.0@8X
BXZ-266-1-3X-G2661 - 3XManual Zoom16.026.0M46x150.0120.06.0@1X 3.0@4X
BXZ-266-1-7X-MOT2661X - 7XMotorized Zoom23.032.0--136.05.0@1X 3.0@7X
BXZ-257-1-5X-G4-MOT
2571X - 5XMotorized Zoom12.028.0-50.0207.07.0@1X 4.0@5X
BXZ-9.4-0.25-2X-MOT94000.25X - 2XMotorized Zoom23.032.0--130.012.0
BXZ-9.4-2-8X-MOT94002X - 8XMotorized Zoom23.036.0--190.06.0@2X 3.0@8X
BXZ-10.6-1-3X-MOT106001X - 3XMotorized Zoom23.038.0--199.08.0@1X 6.0@3X
BXZ-10.6-1-4X-MOT106001X - 4XMotorized Zoom23.047.0--189.010.0@1X 8.0@4X
BXZ-10.6-2-6X-MOT106002X - 6XMotorized Zoom23.028.0--213.03.5@2X 3.0@6X
BXZ-10.6-2-8X-MOT106002X - 8XMotorized Zoom23.030.0--190.05.0@2X 3.0@8X

What makes our beam expander products unique is the broad wavelength input that we carry and the customization services that we provide for customers who need specific requirements in their industrial and production line. The parameters that we are able to provide customization include wavelength-specific filtering, anti-reflection coating, magnification factor selection, input/output clear aperture, and maximum beam intensity.

  • Fixed Beam Expander (BEX)

Beam expander in laser system development is utilized for calibrating various elements. The diameter of the laser beam at the laser system output is adapted to the required diameter at the input of the objective lens. The beam expander is also primarily used in laser-material processes.

Fixed beam expanders are also designed for specific beam expansion applications such as laser engraving. They also feature anti-reflection coatings and high transmissivity to maximize the efficiency of the beam expansion and reduce losses. The disadvantage lies in the fixed magnification factor and applications that require tuning of the output beam size are unable to perform.

  • Manual Zoom Beam Expander (BXZ)

Zoom Beam Expander accounts for the short-fall of fixed beam expander by allowing the user to tune manually to the required magnification factor, depending on various processes that is required. These beam expanders are also designed for high power applications where magnification adjustments may be required.

The concept of zoom beam expander works on the internal translation stages and focusing mechanisms to adjust and account for the changes in magnification continuously. It also takes laser divergence into consideration and performs relative adjustments without affecting the overall housing length.

  • Motorized Zoom Beam Expander (BXZ-MOT)

Motorized Zoom Beam Expander accounts for the short-fall of fixed beam expander by allowing the user to tune automatically to the required magnification factor, depending on various processes that is required. These beam expanders are also designed for high power applications where magnification adjustments may be required.

The concept of zoom beam expander works on the internal translation stages and focusing mechanisms to adjust and account for the changes in magnification continuously. It also takes laser divergence into consideration and performs relative adjustments without affecting the overall housing length.

  • CO2 Beam Expander (UniBet & MiniBet)

UniBET series beam expanders are developed for higher power (>100w) CO2 laser without water cool. It has a consistent outer dimension and connecting thread M30x1.

MiniBET series are smaller in size, all have the same external diameter of 20mm, total range ranging from around 28mm to 70mm only. Thread M16x0.75 and it is widely applied in a compact CO2 laser system.

  • CO2 Water Cool Beam Expander (BET-WC)

A laser beam expander is designed to increase the diameter of a collimated output beam. It is used in applications such as laser scanning, interferometer, and remote sensing. BET-WC Series water cool beam expanders are developed for even higher power (>200W) CO2 lasers with consistency in outer dimension and water pipe connection.

  • Fixed Beam Expander (BEX)

Magnification: 1x – 50x
Beam Divergence: Adjustable
Design Type: Galilean
Pointing Stability: < 1 mrad
Wavelength: 266 / 355 / 405 / 532 / 633 / 1064 / 1550 / 2000 / 9400 / 10600nm

  • Manual Zoom Beam Expander (BXZ)

Magnification: Continuous Zoom
Beam Divergence: Adjustable
Pointing Stability: <1 mrad
Operational Type: Manual
Wavelength: 266 / 355 / 405 / 532 / 633 / 1064 / 1550 / 2000 / 9400 / 10600nm

  • Motorized Zoom Beam Expander (BXZ-MOT)

Adjustment Speed: per magnification 5 sec
Baud Rate: 9600 bit/sec
Power Input: 9V
Interface: RS232 and USB
Pointing Stability: <1 mrad
Wavelength: 266 / 355 / 405 / 532 / 633 / 1064 / 1550 / 2000 / 9400 / 10600nm

  • CO2 Beam Expander - UniBet

Collimation of COLaser: >100W
Fixed Magnifications:
1.5x – 10x
Design: Galilean
Adjustable: Divergence

  • CO2 Beam Expander - MiniBet

Collimation of COLaser: >100W
Fixed Magnifications:
1.5x – 6x
Design: Galilean
Adjustable: Divergence

  • CO2 Water Cool Beam Expander (BET-WC)

Collimation of COLaser: >200W
Fixed Magnifications:
1.5x – 10x
Design: Galilean
Adjustable: Divergence

Beam Expander Application Note

Laser Optics Beam Expander
BXZ Series

The Ronar-Smith® Beam Expander demands the highest beam broadening and collimation quality without compromising on the expanded beam quality. We value safety as much as we do quality, and that is why we ensure all our beam expanders are subjected to rigorous testing prior to market sales. Our beam expanders are telescopic by nature and require a collimated beam input while delivering an expanded collimated beam at the output.

What makes our beam expander products unique is the broad wavelength input we carry and the customization services we provide. Our product customization services are of great value for customers who need specific requirements in their industrial and production lines. The parameters that we are able to provide with customization include wavelength-specific filtering, anti-reflection coating, magnification factor selection, input/output clear aperture, and maximum beam intensity.

We provide ready-stock Ronar-Smith® beam expanders in three configurations: fixed (BEX series), zoom (BXZ series), and motorized zoom (BXZ-MOT series).

Working Principles

Fixed Beam Expander (BEX Series)

Figure 1. Fixed Beam Expander

Beam expanders in laser system development are utilized for calibrating various elements. The diameter of the laser beam at the laser system output is adapted to the required diameter at the input of the objective lens. The beam expander is also primarily used in laser-material processes.

Fixed beam expanders are also designed for specific beam expansion applications such as laser engraving. They also feature anti-reflection coatings and high transmissivity to maximize the efficiency of the beam expansion and reduce losses. The disadvantage lies in the fixed magnification factor and applications that require tuning of the output beam size are unable to perform.

Zoom Beam Expander (BXZ and BXZ-MOT Series)

Figure 2. Zoom Beam Expander

The zoom beam expander accounts for the shortfall of the fixed beam expander by allowing the user to tune either manually or automatically (motorized) to the required magnification factor, depending on various processes that are required. These beam expanders are also designed for high-power applications where magnification adjustments may be required.

The concept of the zoom beam expander works on the internal translation stages and focusing mechanisms to adjust and account for the changes in magnification continuously. It also takes laser divergence into consideration and performs relative adjustments without affecting the overall housing length.

Versatile Beam Expansion: From Tunable to Automation

The function of a beam expander is to take an input collimated light and expand (or reduce) its output beam diameter. For example, the BXZ-9.4-0.5-3X zoom beam expander allows for the laser output beam diameter to be magnified by 0.5 to 3 times its input beam diameter.

Operation Principle

Beam expanders primarily make use of two types of optical designs, namely Keplerian and Galilean. Keplerian design involves the use of a positive lens pair. While the Galilean design makes use of a negative and a positive lens pair. For our RONAR-SMITH® zoom beam expanders (BXZ series), the Galilean design is adopted. Galilean designs are generally shorter than Keplerian ones with the same magnification level.
Such designs, without tight focusing, prevent the ionisation of air when high energy lasers are used.

Figure 1. Design of beam expander.

The key specifications of the different zoom beam expanders are listed below. Compared to similar products in the market, we offer versatile tunability and automatic control at different laser wavelengths.

Wavelength257nm, 355nm, 532nm,
1064nm, 1550nm, 1940nm,
2.800um, 9.4um, 10.6um
Magnification0.25—10X
Divergence
adjustability
Yes
Angle of incidence0 ± 0.06°
Pointing stability< 1.0 mrad
Other specificationsRefer to catalog
Table 1. Key specifications of the zoom beam expander

With in-house design capability, a typical zoom beam expander outline is shown in Figure 2. All designs come with a detailed specification table and operation manual.

Figure 2. Outline of a typical zoom beam expander.

Applications

(a) Automatic Tunable Beam Expander

Following the global trend in automation, we came up with a new series of automatic beam expanders. The unique design of an integrated printed circuit board provides an integrated communication port, a memory-based calibration function, and a high accuracy of 10um.

Figure 3. Automatic beam expander and in-house
developed control board

(b) Reflective Design

To minimize the tight focusing effect in the Keplerian design, we came up with new modules based on reflective focusing optics. It could be used as a stand-alone module, or integrated with other transmission-based beam expanders.

Figure 4. Design of reflective beam expander

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FAQ

A laser beam expander is an optical device used to increase the diameter of a laser beam. The purpose of a beam expander is to reduce the divergence of the laser beam, which is the tendency of the beam to spread out as it travels. By increasing the diameter of the beam, the beam expander reduces the divergence, allowing the beam to travel further without spreading out too much.

A typical laser beam expander consists of two lenses placed a certain distance apart, with the distance between the lenses being equal to the sum of their focal lengths. The first lens diverges the laser beam to a larger diameter, and the second lens then collimates the enlarged beam to be parallel. The amount of expansion is determined by the ratio of the focal lengths of the two lenses.

Laser beam expanders are commonly used in laser machining, laser cutting, and laser marking applications, where a precise and focused laser beam is required. They can also be used in scientific research, such as in laser spectroscopy or microscopy.

Here are the general steps for using a laser beam expander:

  1. Set up the laser beam expander: Mount the laser beam expander onto a stable platform or optical bench. Make sure the input and output ports are properly aligned and secured.
  2. Connect the laser: Connect the laser source to the input port of the beam expander. Ensure that the laser is properly focused and aligned.
  3. Adjust the beam expander: Depending on the type of beam expander, adjust the optical elements to expand or collimate the laser beam. Some beam expanders have adjustable lenses or mirrors, while others may require the use of fixed optics.
  4. Check the beam profile: Use a beam profiler or other measuring tool to check the spatial profile and divergence of the expanded beam. Adjust the beam expander as necessary to achieve the desired beam quality.
  5. Use the expanded beam: Once the beam expander is properly set up, use the expanded beam for your desired application, such as laser cutting, welding, or marking.

It’s important to note that laser safety should always be a top priority when working with lasers and laser beam expanders. Always wear appropriate protective eyewear and follow all safety guidelines and regulations.

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