Anti-Reflective Coating on Lens Surface Minimizes Unwanted Reflections

Product Description

The F-Theta flat field scanning lens, also known as the field mirror and F-theta Focusing lens, is a professional industrial laser device based on galvanoscopic scanning of laser marking, cutting and engraving systems. There are a wide variety including F-Theta lenses and telecentric lenses, the recommended ones on this page are F-Theta lenses for laser wavelengh of 1064nm, 355nm and 10.6μm.
About how to choose scan scope:
A large scanning range means that there is no need to move the processed material, and the laser can scan a large range at once. However, the focus spot also increases, the distortion increases, the focal length increases, and the working axis also needs to be raised.
The extension of working distance inevitably leads to the loss of laser energy. Compared with small format field mirrors on the same equipment, laser energy will be weakened.
In addition, insufficient thinness of the spot can lead to a very rapid decrease in the power density of the laser (power grams are inversely proportional to the second power of the spot diameter),reducing the processing efficiency.
To ensure both scanning range and processing efficiency, it is necessary to increase the power of the laser. Therefore, the power of the laser, the working focus of the laser system and the actual processing needs simultaneously constrain the selection of the field mirror scanning range. You can provide us with specific feedback on the actual situation to obtain more accurate recommendations.
1064nm F-Theta lens:

Type		Wavelength (nm)	Scan Field (mm)	Focus Length (mm)	Max Ent Pupil (mm)	Diameter (mm)	Work Distance (mm)	Spot Diagram (um)	Thread (mm)
Short name	Complete name
F100	Fiber-1064-70-100	1064	70x70	100	12(10)	52x88	115.5	10	M85x1
F160B	Fiber-1064-110-160B	1064	110x110	160	12(10)	49x88	160.5	20	M85x1
F210	Fiber-1064-150-210	1064	150x150	210	12(10)	49.7x88	244.6	25	M85x1
F254	Fiber-1064-175-254	1064	175x175	254	12(10)	49.7x88	289.8	30	M85x1
F290	Fiber-1064-200-290	1064	200x200	290	12(10)	49.5x88	311.4	32	M85x1
F330	Fiber-1064-220-330	1064	220x220	330	12(10)	49.5x88	354.1	35	M85x1
F330D	Fiber-1064-220-330D	1064	220x220	330	18(10)	49.5x108	356.5	35	M85x1
F430	Fiber-1064-300-430	1064	300x300	430	12(10)	47.7x88	462.5	45	M85x1
F430D	Fiber-1064-300-430D	1064	300x300	430	18(10)	53.7x108	462.5	45	M85x1
F580	Fiber-1064-450-580	1064	450x450	580	18(10)	54x109	622	50	M85x1
Remark: Above "Diameter" refers to "height of lens" x "big face diameter of lens"

10.6um F-Theta lens:

Type		Focus Length (mm)	Working Distance (mm)	Scan Angle(±º)	Scan Field (mm)	Max Ent Pupil (mm)	Wavelength (nm)	Thread (mm)	Lens Diameter (mm)	Spot Diagram (um)
Short name	Complete name
F100	CO2-10.6-70-100	100	90.4	25	70x70	12	10640	M85x1	48	180
F100D	CO2-10.6-70-100-D36	100	88.2	25	70x70	12	10640	M85x1	36	180
F130D	CO2-10.6-90-130-D36	130	118	25	90x90	12	10640	M85x1	36	190
F150	CO2-10.6-110-150	150	135.5	25	110x110	12	10640	M85x1	48	195
F160	CO2-10.6-110-160	160	145.5	25	110x110	12	10640	M85x1	48	200
F160D	CO2-10.6-110-160-D36	160	143.3	25	110x110	12	10640	M85x1	36	200
F200	CO2-10.6-140-200	200	185	25	140x140	12	10640	M85x1	48	210
F230	CO2-10.6-140-230	230	216.3	25	140x140	12	10640	M85x1	48	220
F260	CO2-10.6-175-260	260	247.3	25	175x175	12	10640	M85x1	48	230
F300	CO2-10.6-210-300	300	287	25	210x210	12	10640	M85x1	48	250
F350	CO2-10.6-250-350	350	338.5	25	250x250	12	10640	M85x1	48	270
F430	CO2-10.6-300-430	430	420.8	25	300x300	12	10640	M85x1	48	300
F550	CO2-10.6-400-550	550	542.6	25	400x400	12	10640	M85x1	48	330
F670	CO2-10.6-500-670	670	665.6	25	500x500	12	10640	M85x1	48	400
F790	CO2-10.6-600-790	790	782.5	25	600x600	12	10640	M85x1	48	470
F850	CO2-10.6-600-850	850	843	25	600x600	12	10640	M85x1	48	500
Remark: Above "Diameter" refers to "height of lens" x "big face diameter of lens"

355nm F-Theta lens:

Type		Wavelength (nm)	Scan Field (mm)	Focus Length (mm)	Max Ent Pupil (mm)	Diameter (mm)	Work Distance (mm)	Spot Diagram (um)	Thread (mm)
Short name	Complete name
F100	UV-355-70-100	355	70x70	100	10(8)	52.7x88	112.7	10	M85x1
F160B	UV-355-100-160B	355	110x110	160	10(8)	52.2x88	192.3	15	M85x1
F160C	UV-355-100-160C	355	110x110	160	10(8)	52x88	191.6	15	M85x1
F210	UV-355-150-210	355	150x150	210	12(10)	52.2x88	261.4	20	M85x1
F254	UV-355-175-254	355	175x175	254	12(10)	53x88	292.3	25	M85x1
F290	UV-355-200-290	355	200x200	290	12	52x88	343.6	30	M85x1
F330	UV-355-220-330	355	220x220	330	12	52x88	380.6	30	M85x1
F430	UV-355-300-430	355	300x300	430	12	52x88	488.6	35	M85x1
Remark: Above "Diameter" refers to "height of lens" x "big face diameter of lens"

Each element in the F-Theta flat field scanning lens is coated with a high-power Anti-reflective coating, with a total transmittance >95%, and a damage threshold >5J/cm2, 20ns, 20Hz.
The following product structure diagram takes the 1064nm, F290 field mirror as an example:
Application examples:
Examples of commonly used laser equipment / laser systems / laser machines:

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