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GCO-15 Laser Focusing Lenses

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GCO-15 Laser Focusing Lenses

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GCO-15 Laser Focusing Lenses
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GCO-15 Laser Focusing Lenses

 

Air-spaced focusing lenses are designed to focus the high-power radiation emitted by lasers. The lenses are optimized for high precision applications such as used in laser machining systems for welding, cutting, drilling and strutting. They can also be used for collimating the laser beam delivered by fiber.
The Daheng’s air-spaced focusing lens product utilizes high quality triple lens elements which are optimized to obtain a diffraction-limited focus spot. With the design-specific optical coating, the lens system achieves transmission throughout at a designed wavelength up to 98%.
 
Spot size Dspot (1/e2)
 
The minimal possible focus spot size from an air-spaced focusing lens is calculated by the wavelength of the laser multiplied with the focal length of the lens, f', the FAP factor and the diffraction value M2 of the laser beam, and divided by the beam diameter Dbeam(1/e2).
 
Depth of focus
 
The depth of focus of an air-spaced focusing lens is defined by a doubled Rayleigh length. The Rayleigh length describes as a distance, along the optical axis, between the positions where the beam area is doubled in front of or behind the focal position.
The Rayleigh length ZR is calculated by the beam area in the focal plane multiplied with a factor (depending on the FAP-factor) divided by the wavelength and the diffraction value M2 of the laser.
 

GCO-15 Laser Focusing Lenses

 

 

 

Part No.

EFL

Wavelength

Out Diameter

Input Aperture

Length

Working Distance

Transmission

Damage Threshold

GCO-150101

25

355nm

25

12

17

17.2

98.5%

 

 

 10J/cm2@10ns 10Hz 1064nm

GCO-150102

48

355nm

30

23

20

40

98.5%

GCO-150103

60

355nm

40

34

27.6

47.5

98.5%

GCO-150111

25

532nm

25

12.5

13.5

19.7

98.5%

GCO-150112

50

532nm

35

23.5

23

42.2

98.5%

GCO-150113

77

532nm

41

35

24

66.6

98.5%

GCO-150121

25

1064nm

25

12.5

13.5

20.1

98.5%

GCO-150122

50

1064nm

35

23.5

20

41.7

98.5%

GCO-150123

77

1064nm

41

35

24

67

98.5%

GCO-150131

25

800nm

-

-

13.5

-

-

 

 

 

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