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Objective Lenses
Product description：
The achromatic Objective Lense is an infinity corrected lens used for axial achromatic correction. It produces the same flat focus field for multiple imaging modes without introducing vignetting effect, so the observation image at the edge of the field of view can also be natural and clear. The objective lense with focal length can also be compatible with other wavelengths, when femtosecond laser (such as 770~790nm) or near-infrared (such as 1064nm) laser aberration correction was applied. CASTECH's laser objective lenses have the characteristics of high NA, high LIDT, high transmission, and high flatness of field of view.
Applications：
● Coaxial Observation
● Laser Import
● Laser Processing
● Chromatic Aberration Correction
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Telecentric F-Theta Lenses |
Non-telecentric F-Theta Lenses |
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Advantage |
• The shape of the central spot is consistent with that of the edge spot • Small distortion of the spot |
• Lower cost |
|
Disadvantage |
• Larger size • High cost |
• The magnification may varies with relative position •Large difference in spot size between center and edge |
Schematic diagram of light path
Products
-
Objective Lenses
- The achromatic Objective Lense is an infinity corrected lens used for axial achromatic correction.
-
Product description：
The achromatic Objective Lense is an infinity corrected lens used for axial achromatic correction. It produces the same flat focus field for multiple imaging modes without introducing vignetting effect, so the observation image at the edge of the field of view can also be natural and clear. The objective lense with focal length can also be compatible with other wavelengths, when femtosecond laser (such as 770~790nm) or near-infrared (such as 1064nm) laser aberration correction was applied. CASTECH's laser objective lenses have the characteristics of high NA, high LIDT, high transmission, and high flatness of field of view.
Applications：
● Coaxial Observation
● Laser Import
● Laser Processing
● Chromatic Aberration Correction
|
|
Telecentric F-Theta Lenses |
Non-telecentric F-Theta Lenses |
|
Advantage |
• The shape of the central spot is consistent with that of the edge spot • Small distortion of the spot |
• Lower cost |
|
Disadvantage |
• Larger size • High cost |
• The magnification may varies with relative position •Large difference in spot size between center and edge |
Schematic diagram of light path
|
Objective Lenses Model Number：CAOL-w-e-l-n |
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Wavelength (w) |
Expansion (e) |
Distance (l) |
NA (n) |
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1064 nm … |
20X 50X … |
20 mm 15.1 mm … |
0.45 0.67 ... |
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Typical Specifications |
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Wavelength |
Expansion |
Distance |
NA |
Resolution |
Transmission |
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1064 nm |
20X |
20 mm |
0.45 |
0.61 μm |
≥82% |
Housing dimensions(mm)：
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