One is to enlarge the diameter of the laser beam; The second is to reduce the divergence angle of the laser beam. Therefore, it is used for long-distance illumination or projection.

And a focusing system.

The divergence angle of the expanded beam is inversely proportional to the beam expansion ratio. Compared with the unexpanded beam, the expanded beam can be focused smaller.

The magnification of laser beam expanding collimator is the magnification of beam diameter. The beam width product of the laser beam output from the laser is about a certain value. When the beam waist radius is enlarged by x times, its divergence angle is correspondingly compressed to the original 1/x, and the compressed divergence angle is actually the collimation of the laser. The product of spot size and divergence angle is optically invariant. When the divergence angle decreases, the compressed divergence angle cannot improve the beam quality, and the compressed divergence angle is the product of the beam waist radius and the divergence angle.

Parameters of laser beam expander in Pu Jie Chuangda Technology Co., Ltd.

model

Beam expansion multiple

Total length (mm)

Outside diameter (mm)

Maximum incident light diameter (mm)

Maximum output light diameter

(mm)

BJP- 1064-2X

2

87

34

16

32

BJP- 1064-3X

three

106

4 1.5

10

30

BJP- 1064-4X

four

Seventy-eight

36

seven

28

BJP- 1064-5X

five

80

34

10

28

Beijing Pu Jie Chuangda Technology Co., Ltd.