Apochromatic Objectives
Special low dispersion glasses allow for the design of lenses which are chromatically corrected for a range of wavelengths. Such lenses are referred to as having minimal secondary spectrum. Camera lenses are an extreme example of apochromatic lenses.
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| 54-8-35N | Objectives Chromatically Corrected for a Specific Wavelength Range |
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| 54-40-100 | Objectives Chromatically Corrected for a Specific Wavelength Range |
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| 54-54-540 | Objectives Chromatically Corrected for a Specific Wavelength Range |
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| 54-22-40 | Objectives Chromatically Corrected for a Specific Wavelength Range |
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| 54-12-180 | Objectives Chromatically Corrected for a Specific Wavelength Range |
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| 54-25-350 | Objectives Chromatically Corrected for a Specific Wavelength Range |
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| 54-40-174 | Objectives Chromatically Corrected for a Specific Wavelength Range |
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| 54-2-7 | Objectives Chromatically Corrected for a Specific Wavelength Range |
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| 54-22-79 | Objectives Chromatically Corrected for a Specific Wavelength Range |
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54-8-35N
Objectives Chromatically Corrected for a Specific Wavelength Range
Specs & Docs
54-8-35N
Objectives Chromatically Corrected for a Specific Wavelength Range
Specifications
Aperture (mm)
8
Back Focal Length (mm)
-35.9
Effective Focal Length (mm)
-34.6
F/#
-4.3
Outside Diameter (mm)
12.5
Wavelength Range (nm)
700 - 900
54-40-100
Objectives Chromatically Corrected for a Specific Wavelength Range
Specs & Docs
54-40-100
Objectives Chromatically Corrected for a Specific Wavelength Range
Specifications
Aperture (mm)
40
Back Focal Length (mm)
95.05
Effective Focal Length (mm)
99.9
F/#
2.5
Outside Diameter (mm)
50.8
Wavelength Range (nm)
700 - 900
54-54-540
Objectives Chromatically Corrected for a Specific Wavelength Range
Specs & Docs
54-54-540
Objectives Chromatically Corrected for a Specific Wavelength Range
Specifications
Aperture (mm)
54
Back Focal Length (mm)
523.0
Effective Focal Length (mm)
540.0
F/#
10.0
Outside Diameter (mm)
60.0
Wavelength Range (nm)
200 - 400
54-22-40
Objectives Chromatically Corrected for a Specific Wavelength Range
Specs & Docs
54-22-40
Objectives Chromatically Corrected for a Specific Wavelength Range
Specifications
Aperture (mm)
22
Back Focal Length (mm)
22.8
Effective Focal Length (mm)
40.0
F/#
1.8
Outside Diameter (mm)
28.6
Wavelength Range (nm)
480 - 550 & 1065
54-12-180
Objectives Chromatically Corrected for a Specific Wavelength Range
Specs & Docs
54-12-180
Objectives Chromatically Corrected for a Specific Wavelength Range
Specifications
Aperture (mm)
12
Back Focal Length (mm)
173.5
Effective Focal Length (mm)
179.2
F/#
15.0
Outside Diameter (mm)
25.4
Wavelength Range (nm)
300 - 365
54-25-350
Objectives Chromatically Corrected for a Specific Wavelength Range
Specs & Docs
54-25-350
Objectives Chromatically Corrected for a Specific Wavelength Range
Specifications
Aperture (mm)
24
Back Focal Length (mm)
362.0
Effective Focal Length (mm)
369.2
F/#
15.0
Outside Diameter (mm)
38.1
Wavelength Range (nm)
250 - 400
54-40-174
Objectives Chromatically Corrected for a Specific Wavelength Range
Specs & Docs
54-40-174
Objectives Chromatically Corrected for a Specific Wavelength Range
Specifications
Aperture (mm)
40
Back Focal Length (mm)
163.7
Effective Focal Length (mm)
173.0
F/#
4.3
Outside Diameter (mm)
50.8
Wavelength Range (nm)
700 - 900
54-2-7
Objectives Chromatically Corrected for a Specific Wavelength Range
Specs & Docs
54-2-7
Objectives Chromatically Corrected for a Specific Wavelength Range
Specifications
Aperture (mm)
2
Back Focal Length (mm)
5.9
Effective Focal Length (mm)
7.1
F/#
3.6
Outside Diameter (mm)
6.4
Wavelength Range (nm)
400 - 700
54-22-79
Objectives Chromatically Corrected for a Specific Wavelength Range
Specs & Docs
54-22-79
Objectives Chromatically Corrected for a Specific Wavelength Range
Specifications
Aperture (mm)
22
Back Focal Length (mm)
73.2
Effective Focal Length (mm)
79.0
F/#
3.6
Outside Diameter (mm)
28.6
Wavelength Range (nm)
400 - 700