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Beam Expanders
Product description：
Beam expander is an optical component built to enlarge the diameter of collimated input beam and reduce beam divergence. It is primarily applied in laser scanning, laser processing, interferometry and remote sensing. A typical Galilean type beam expander consists of one negative lens and one positive lens.
CASTECH offers two types of beam expanders, fixed magnification and variable magnification. The fixed magnification beam expander is with compact design, while the magnification and divergence of variable type are adjustable.
Our product covers diverse magnifications and output diameters to meet various application requirements. Advanced polishing and coating technology have been used to ensure high beam quality and low insertion loss.
Applications：
● Laser scanning
● Short pulsed laser
● Ultra-short pulsed laser
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|
Fixed Magnification Beam Expander |
Variable Magnification Beam Expander |
|
Advantage |
• Compact structure • Lower cost |
• Variable magnification |
|
Disadvantage |
• Invariable magnification |
• Complex structure • Higher cost |
Figure: Common beam expander is derived from the Galilean telescopes which consists of a negative lens
and a positive lens that are also separated by the sum of their focal lengths.
Products
-
Beam Expanders
- CASTECH offers two types of beam expanders, fixed magnification and variable magnification. Our product covers diverse magnifications and wavelengths to meet various application requirements.
-
Product description：
Beam expander is an optical component built to enlarge the diameter of collimated input beam and reduce beam divergence. It is primarily applied in laser scanning, laser processing, interferometry and remote sensing. A typical Galilean type beam expander consists of one negative lens and one positive lens.
CASTECH offers two types of beam expanders, fixed magnification and variable magnification. The fixed magnification beam expander is with compact design, while the magnification and divergence of variable type are adjustable.
Our product covers diverse magnifications and output diameters to meet various application requirements. Advanced polishing and coating technology have been used to ensure high beam quality and low insertion loss.
Applications：
● Laser scanning
● Short pulsed laser
● Ultra-short pulsed laser
|
|
Fixed Magnification Beam Expander |
Variable Magnification Beam Expander |
|
Advantage |
• Compact structure • Lower cost |
• Variable magnification |
|
Disadvantage |
• Invariable magnification |
• Complex structure • Higher cost |
Figure: Common beam expander is derived from the Galilean telescopes which consists of a negative lens
and a positive lens that are also separated by the sum of their focal lengths.
|
Beam Expander Model Number：tBE-a-b-c-d-h |
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Type(t) |
Wavelength(a) |
Expansion(b) |
Thread(c) |
Divergence Adjustable(d) |
Package(h) |
|
F (fixed magnification) V (variable magnification) |
355 nm 532 nm 1064 nm ... |
2 (2X) 3 (3X) 103 (1X-3X)* 104 (1X-4X)* 208 (2X-8X)* ... |
22 (M22*0.75) 30 (M30*1) ... |
A (Yes) B (No) |
G01 G02 G03 G04 G05 G06 ... |
*Only suitable for V (variable magnification beam expander) type products.
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Typical Specifications |
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Expansion |
Material |
Input Aperture |
Exit Aperture |
Max Outside Diameter |
|
2 |
UVFS |
12 mm |
26 mm |
42 mm |
|
10 |
UVFS |
6 mm |
31 mm |
46 mm |
|
2X~8X* |
UVFS |
3 mm |
26 mm |
48 mm |
*Only suitable for V (variable magnification beam expander) type products.
Housing dimensions(mm)：
G01
G02
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