BEAM EXPANDERS

Beam expanders consist two or more elements which change the size and angular divergence characteristics of a beam passing through it. Beam expanders can be used such as 1) By expanding a beam prior to focusing, smaller spot size can be achieved. 2) Improving a beam's collimation. 3) By using it in opposite direction, beam expander  can reduce the beam diameter which is useful in some of the acousto-or electro-optic modulator application.

Beam expander are widely used in industrial laser marking/engraving and cutting system where the requirement to the laser beam quality is very critical.

We offer industrial standard beam expander for CO2, Nd:YAG, Green,  UV laser system.

    1.Beam Expander for CO2 Laser  (10.6um)        

　

        

          

    a) Fixed type

P/N

Magni-

fication

Input CA (mm)

Output CA

(mm)

Dia 1

(mm)

Dia 2

(mm)

L2

(mm)

L1

(mm)

 BEX-10.6-1.5

 1.5 10 15 20 20 --

34.50

 BEX-10.6-2

 2 10 15 22 22 -- 32.50

 BEX-10.6-2A

 2 11 16 22 22 -- 34

 BEX-10.6-2B

 2 11 16 22 22 -- 36
 BEX-10.6-2.5 2.5 10 20 27 27 -- 54
 BEX-10.6-3A 3 10 15 20 20 -- 59
 BEX-10.6-3B 3 10 20 20 28 35 59
 BEX-10.6-3C 3 10 20 20 28 60 110
 BEX-10.6-3.3 3.3 10 15 20 20 -- 67

 BEX-10.6-4

 4 10 20 20 28 45 66

 BEX-10.6-4C

 4 10 23 20 30 90 135
 BEX-10.6-5 5 12 23 20 30 45 70

 

       b) Adjustable divergence type

P/N

Magni-

fication

Input CA (mm)

Output CA

(mm)

Max. Outer Dia 

(mm)

L2

(mm)

L1

(mm)

BEX-10.6-2Z

 2 10 15 22 37 48

BEX-10.6-2Z1

 2 10 22 32 38 48

BEX-10.6-2ZG

 2 10 15 22 40 51

BEX-10.6-2Z3

 2 15 28 36 38 48
BEX-10.6-2.5Z 2.5 10 15 20 45 59
BEX-10.6-2.5Z1 2.5 10 15 20 25 34
BEX-10.6-2.5Z2 2.5 10 20 28 40 56
BEX-10.6-3Z1 3 10 15 20 50 62
BEX-10.6-3Z2 3 10 20 28 50 60
BEX-10.6-3Z3 3 10 15 20 28 37
BEX-10.6-3Z4 3 10 25 33 47 60
BEX-10.6-3Z5 3 15 35 44 60 73
BEX-10.6-3Z6 3 15 28 36 51 60
BEX-10.6-4Z 4 10 15 20 45 59
BEX-10.6-4Z1 4 10 20 28 60 70
BEX-10.6-4Z2 4 15 28 36 58 66
BEX-10.6-5Z 5 10 15 20 45 59
BEX-10.6-5Z1 5 10 23 30 60 71
BEX-10.6-6Z 6 10 25 32 64 75
BEX-10.6-6Z1 6 10 35 44 64 75
BEX-10.6-8Z1 8 10 35 44 103 120

Instruction:

1. L1 is set to nominal length as table specified by factory

2. User to adjust L1+/-3mm to achieve ideal divergence     

　

Outline drawing