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F-Theta Lenses
Flat field lenses for galvanometer scanning laser marking, engraving and cutting systems
F-theta lenses are often used in laser marking, laser engraving and laser cutting systems where constant scan rate and linear displacement are required. F-theta lenses induce spot distortion over the entire working area, providing a flat field to the image plane so that the spot position is proportional to the scanning angle CASTECH can provide both telecentric and non-telecentric F-theta field mirrors. Due to the use of high quality low-absorption materials, as well as unique polishing and coating technologies, CASTECH's F-theta lenses have high laser damage thresholds. All lenses have standardized threaded interfaces for compatibility and easy assembl.
Applications：
● Laser industrial processing
● Laser sensing system
● Ultrafast laser system
CASTECH's products are produced independently throughout the entire process and can be customized according to customer needs. Refer to the following list for standard products.
Schematic diagram of F-theta lens
Products
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F-Theta Lenses
- Flat field lenses for galvanometer scanning laser marking, engraving and cutting systems
-
Flat field lenses for galvanometer scanning laser marking, engraving and cutting systems
F-theta lenses are often used in laser marking, laser engraving and laser cutting systems where constant scan rate and linear displacement are required. F-theta lenses induce spot distortion over the entire working area, providing a flat field to the image plane so that the spot position is proportional to the scanning angle CASTECH can provide both telecentric and non-telecentric F-theta field mirrors. Due to the use of high quality low-absorption materials, as well as unique polishing and coating technologies, CASTECH's F-theta lenses have high laser damage thresholds. All lenses have standardized threaded interfaces for compatibility and easy assembl.
Applications：
● Laser industrial processing
● Laser sensing system
● Ultrafast laser system
CASTECH's products are produced independently throughout the entire process and can be customized according to customer needs. Refer to the following list for standard products.
Schematic diagram of F-theta lens
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F-Theta Lenses Model Number：FT-a-b-c |
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Wavelength (a) |
Focal Distance (b) |
Scan Field (c) |
|
355 nm ... |
109 (109.4 mm) 160 (160 mm) 174 (174.1 mm) 225 (255 mm) ... |
63 (63×63 mm) 99 (99×99 mm) 107 (107×107 mm) 158 (158×158 mm) ... |
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Typical Specifications |
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Material |
Max Input Beam |
Scan Field |
Wd |
M1/M2 |
|
UVFS |
6 mm |
63x63 mm2 |
151.5 mm |
13/35.5 |
|
UVFS |
7 mm |
99x99 mm2 |
194.43 mm |
13/23 |
|
UVFS |
10 mm |
158x158 mm2 |
319.7 mm |
13/28 |
Housing dimensions(mm)：
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