• AR Coated for HeNe Laser Wavelength of 633nm
• Fixed Magnifications Available from 3X to 20X
• Divergence Adjustable with Non-Rotating Optics
TECHSPEC® Arcturus™ HeNe Beam Expanders offer high performance optical designs packaged in a precise
opto-mechanical platform. Two full rotations of the adjustment knurl provide smooth movement for the
optics in order to vary the output from collimated to the minimum focus distance of 1.2 meters. The precise
adjustment mechanism keeps optics from rotating, which helps maintain bore sight accuracy and a minimally
aberrated beam. Adjustment lock secures position. TECHSPEC® Arcturus™ HeNe Beam Expanders are easily
secured to both metric and English threaded mounts. Four tapped holes (two M6 on 25mm centers and two
¼-20 on 1" centers) are located near the middle of the assembly for mounting.
Expansion Power: 3X, 5X, 10X, 15X, or 20X
Entrance Aperture (mm): 2.0 max
Optimized for 1.0 (1/e2)
Exit Aperture (mm): Entrance Beam x Mag (27 Max.)
Focus Range: 1.2m - ∞
Draconis™ Beam Expanders
80 +44 (0) 1904 788600 | Edmund Optics® N NEW PRODUCT NEW LOW PRICE
testing & detection targets illumination cameras imaging lenses microscopy lasers optomechanics optics
• AR Coated Versions for either Nd:YAG Laser Line or Broadband Applications
• Fixed Magnifications Available from 3X to 10X
• Divergence Adjustable through Non-Rotating Optical Design for Reduced Beam Wander
TECHSPEC® Draconis™ Beam Expanders feature high performance optical designs that have been optimized
and tested for Nd:YAG laser wavelengths and broadband use. These beam expanders offer diffraction-limited
performance over large input beam diameters and wide acceptance angles, eliminating the need for critical
alignment. Mechanical adjustment through a sliding optical design corrects errors in divergence or collimation.
Due to the lack of ghost images focusing on internal surfaces, these beam expanders ensure compatibility
with high power lasers. TECHSPEC® Draconis™ Beam Expanders’ C and T input/output mounting threads are
compatible with Edmund Optics’ line of threaded mounting components, or mounting can be achieved using
an optional mounting clamp.
Lens Element Material: Fused Silica, Corning 7980
Focus Range: 1.5m - ∞
Focus Travel: ±7.5mm
Transmitted Wavefront:
l/10 @ 1mm Input Beam Diameter; l/4 @ Input Beam Diameter;
4mm (3X), 3mm (5X & 10X); *2.2mm (10X)
Mount: Input: Male C-Thread (1" x 32 TPI)
Output: Male T2-Thread (M42 x 0.75)
TECHSPEC® Draconis™ Beam Expanders
Expansion
Power
Design
Wavelength Coating Entrance
Aperture (mm)
Exit
Aperture (mm)
Length Without
Threads (mm)
Housing Max.
Diameter (mm) Stock No.
Price
1-4 5-24 25+
3X 532nm
V-Coat @
532nm
11 33 88 46 #59-125 £602.65 £500.65
Call For OEM Quantity Pricing
5X 532nm 10 33 85 46 #59-126 £628.15 £517.65
10X 532nm 8 33 98 46 #59-127 £645.15 £534.65
3X 1064nm
V-Coat @
1064nm
11 33 88 46 #59-128 £602.65 £500.65
5X 1064nm 10 33 85 46 #59-129 £628.15 £517.65
10X 1064nm 8 33 98 46 #59-130 £645.15 £534.65
3X Broadband
UV
Broadband
11 33 88 46 #68-270 £602.65 £500.65
5X Broadband 10 33 85 46 #68-271 £628.15 £517.65
10X Broadband 8 33 98 46 #68-272* £645.15 £534.65
3X Broadband
VIS
Broadband
11 33 88 46 #59-131 £602.65 £500.65
5X Broadband 10 33 85 46 #59-132 £628.15 £517.65
10X Broadband 8 33 98 46 #59-133 £645.15 £534.65
3X Broadband
NIR
Broadband
11 33 88 46 #59-134 £602.65 £500.65
5X Broadband 10 33 85 46 #59-135 £628.15 £517.65
10X Broadband 8 33 98 46 #59-136 £645.15 £534.65
Accessories
Description Stock No. Price
M43 x 0.5 (male) Output Adapter #59-137 £33.15
M30 x 1.0 (male) Input Adapter #36-302 £33.15
Mounting Clamp, English #59-475 £84.15
Mounting Clamp, Metric #59-476 £84.15
Coating Options
Coating Center Wavelength (CWL) Wavelength Range (WR) Reflectivity per Surface over WR
V-Coat @ 532nm 532nm ±1nm 510 - 555nm Ravg <0.5%
V-Coat @ 1064nm 1064nm ±1nm 1030 - 1100nm Ravg <0.5%
UV Broadband 266nm, 355nm 260 - 365nm Ravg <0.5%, Ravg <0.25% @ V-Coat l
VIS Broadband 633nm ±1nm 425 - 700nm Ravg <1.0%
NIR Broadband 785nm ±1nm 750 - 1100nm Ravg <1.0%, Ravg <0.5% @ 780 - 950nm
Optics Coating: l/4 MgF2 @ 632.8nm
Design Wavefront Error: l/4 @ 632.8nm
Diameter (mm): 50.0
Mount: C-Mount (1" x 32 TPI)
Housing: Black Anodized Aluminum
TECHSPEC® Arcturus™ HeNe Beam Expanders
Expansion
Power Length (mm) Stock No.
Price
1-4 5-24 25+
3X 115.0 #58-208 £356.15 £313.65
Call
5X 107.5 #55-577 £381.65 £339.15
10X 118.0 #55-578 £398.65 £352.75
15X 120.5 #58-209 £449.65 £398.65
20X 122.5 #55-579 £543.15 £483.65
(2) x M6 x 1.0
Mounting Holes
4.0mm
11.5mm
96.64mm
Focus
Knurl
50.0mm
C-Mount
L
2 x ¼-20
Mounting Holes
63.7mm
25.4mm
64.1mm
25.0mm
Arcturus™ HeNe Beam Expanders
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