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GCO-150112 Laser Focusing Lenses

258.5

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258.5

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Laser 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	-	-