Altechna VBE 1X-4X User Manual Download | Manualshive

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Variable Beam

Expander

1X-4X

User Manual

2020 version v.1.00

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Summary of Contents for VBE 1X-4X

Page 1: ...Variable Beam Expander 1X 4X User Manual 2020 version v 1 00 ...

Page 2: ...2 Contents 1 Introduction 3 2 Applications 4 3 Technical information 4 4 Alignment 5 5 Usage 9 ...

Page 3: ...damages arising from any defect or error in this manual or product Specifications and information contained in this manual are furnished for informational use only and are subject to change at any time without notice and should not be construed as a commitment by Altechna Altechna assumes no responsibility or liability for any errors or inaccuracies that may appear in this manual including the pro...

Page 4: ...otal transmission 97 y y Wavefront distortion λ 4 632 8 nm y y LIDT 10 J cm 1064 nm 10 ns 10 Hz y y Housing dimensions Ø41 5 x 120 136 7 mm y y Mounting thread SM1 Magnification Wavelength 1x 2x 3x 4x 1550 Ø8 Ø7 Ø5 Ø4 1342 Ø8 Ø7 Ø5 Ø4 1140 Ø7 Ø7 Ø5 Ø4 1020 1070 Ø7 Ø7 Ø5 Ø4 800 Ø7 Ø7 Ø5 Ø4 633 Ø6 Ø6 5 Ø5 Ø4 515 532 Ø6 Ø6 5 Ø4 Ø3 343 355 Ø4 Ø5 5 Ø3 Ø3 Table 1 Max input beam diameter mm ensuring diff...

Page 5: ... center it and set current beam position as a reference point by placing crosshair over the center fig 1 Figure 1 Setting beam position 2 Place 4 axis mount at 100 mm distance from the laser 3 Align the mount with the beam 4 Place the VBE into the 4 axis mount and unlock expansion and focusing cylinders with 1 3 mm hex fig 2 Figure 2 Unlocking expansion and focusing regulators ...

Page 6: ...s it should correspond to 260 mark on the scale fig 3 Figure 3 Setting the focusing most outwards 6 After VBE placement into optical beam path laser beam will be decentered on the screen By adjusting tilt θx θy get the laser beam spot back to the center of the camera where crosshair was placed for reference fig 4 Figure 4 Centering laser beam spot ...

Page 7: ...ationandfocusingarechanged thelaserbeamspotwillbedecenteredonthescreenagain 9 Set current beam position as a reference point by placing crosshair over the center fig 6 à Figure 6 Setting laser beam position 10 Set VBE expansion scale back to x4 and focusing most counter clockwise it should correspond to 260 mark on the scale fig 7 ...

Page 8: ...t θx θy get the laser beam spot back to the crosshair fig 8 Figure 8 Centering laser beam sport with crosshair 12 The VBE is aligned 5 Usage To set desired magnification on Variable laser beam expander three adjustment steps must be performed Adjustment procedure 1 Unlock expansion and focusing cylinders with 1 3 mm hex ...

Page 9: ... following input the following input beam diameters Ø3 mm 355 nm Ø3 8 mm 532 nm Ø4 mm 633 nm Ø4 mm 800 nm Ø4 mm 1064 nm Ø4 mm 1342 nm Ø4 mm 1550 nm In real applications focusing scale might require be even somewhat different fine tuning to obtain best collimation of the beam The reason lays in laser beam characterization parameters diameter divergence and M which are unique to every laser source A...

Page 10: ... tuning especially on the lower expansion end Please refer to the graph below for comparison of collimation curves for Ø2 mm beam with Ø4 mm and Ø6 mm beams fig 11 Expansion ratio times Collimation curves 0 60 120 180 240 1x 2x 3x 4x Focisung scale domomination Ø2 mm collimated beam geometric optics approximation Ø2 mm beam full angle divergence 1 mrad paraxial approx Ø2 mm beam full angle diverge...

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Page 12: ...Tel 370 5 272 5738 Fax 370 5 272 3704 info altechna com Mokslininku st 6A Vilnius Lithuania www altechna com ...

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