UV-VIS-IR Apochromats

UV-VIS-IR Achromate/Zeichnung(4k)

Polarization preserving by use of purely isotropic lens materialsto top

objectives which can be described as UV achromats too are produced from fused silica and CaF2. The objectives are manufactured either for one infinite conjugate (magnification ratio β' =M= 0) or for 1:1-imaging (β' = M= -1).
The use of new construction techniques and tools made it possible to replace the previously used birefringent and optically active crystal quartz by isotropic fused silica without a reduction of the imaging quality. Therefore, these objectives are now suitable for applications in which the preservation of the polarization orientation is crucial. The conversion is not yet finished for all models and for some time some systems will still be delivered with crystal quartz lenses. If you require a particular lens material we shall on your request gladly send you a corresponding quotation if a suitable system is available.
The transmission of the materials makes these objectives suitable for use in the wavelength region from approx. 180 nm up to 2.5 µm. The chromatic correction is achromatic in the UV and apochromatic in the wavelength range from 190 nm to above 1,2 µm (UV-VIS-IR), in this range the chromatic variation of back focal length (at M=0) is up to 0.8% of the focal length. Between 200 nm and 340 nm the variation amounts to 0.3% to 0.4% of the focal length.
When optimally focused then the objectives are diffraction limited for image points close to the optical axis. For finite fields (up to a few degrees image angle) it is not possible to correct for field curvature and astigmatism completely due to the limited choice of UV lens materials and by the limited number of lenses.
The paraxial focal lengths f as well as a back focal length s'* (measured from the rear surface of the holder and optimized for the whole aperture) are given for a selection of wavelengths in the following table for the objectives OUV 10.25 (doublet) OUV 4.25 (triplet) and OUV 1.4.25 (triplet, M = -1) as examples.
The given values hold for objectives made from CaF2 and fused silica. Data for other models as well as for the previously manufactured systems using CaF2 and crystal quartz are available on request.

Wavelength OUV 10.25 OUV 4.25 OUV 1.4.25
λ f s'* f s'* f s'*
2000 nm
1600 nm
1200 nm
1000 nm
  800 nm
  600 nm
  500 nm
  400 nm
  340 nm
  300 nm
  260 nm
  240 nm
  220 nm
  200 nm
  190 nm
242.1 mm
245.9 mm
248.7 mm
249.7 mm
250.5 mm
250.9 mm
250.9 mm
250.7 mm
250.4 mm
250.2 mm
250.0 mm
250.1 mm
250.6 mm
252.0 mm
253.6 mm
217.9 mm
221.3 mm
223.9 mm
224.8 mm
225.5 mm
225.8 mm
225.7 mm
225.3 mm
224.9 mm
224.5 mm
224.0 mm
223.8 mm
223.9 mm
224.8 mm
225.8 mm
97.5 mm
98.7 mm
99.6 mm
100.0 mm
100.2 mm
100.3 mm
100.2 mm
100.1 mm
99.9 mm
99.7 mm
99.5 mm
99.4 mm
99.4 mm
99.6 mm
99.9 mm
77.8 mm
79.1 mm
80.0 mm
80.3 mm
80.6 mm
80.8 mm
80.7 mm
80.6 mm
80.4 mm
80.3 mm
80.2 mm
80.1 mm
80.1 mm
80.4 mm
80.8 mm
97.6 mm
98.8 mm
99.7 mm
100.0 mm
100.2 mm
100.3 mm
100.2 mm
100.1 mm
99.9 mm
99.7 mm
99.4 mm
99.3 mm
99.3 mm
99.5 mm
99.8 mm
168.8 mm
173.7 mm
177.4 mm
178.7 mm
179.7 mm
180.2 mm
180.0 mm
179.4 mm
178.7 mm
178.1 mm
177.3 mm
177.1 mm
177.1 mm
178.0 mm
179.3 mm

Objective Holder Magnification Ratio β' = 0
Ø Focal Length Ø Length Thread Ordernr. Price 1 pc. Price 2-5 pc. Price 6-10 pc.
13 mm
15 mm
20 mm
25 mm
30 mm
40 mm
50 mm
60 mm
120 mm
150 mm
200 mm
250 mm
300 mm
400 mm
500 mm
600 mm
25 mm
25 mm
30 mm
35 mm
40 mm
50 mm
60 mm
70 mm
20 mm
20 mm
22 mm*
24 mm
29 mm*
34 mm*
39 mm*
43 mm
M23 • 1
M23 • 1
M28 • 1
M33 • 1
M38 • 1
M48 • 1
M58 • 1
M68 • 1
OUV 10.12
OUV 10.15
OUV 10.20
OUV 10.25
OUV 10.30
OUV 10.40
OUV 10.50
OUV 10.60
€ 1730
€ 1766
€ 1878
€ 2145
€ 2548
€ 2886
€ 3483
€ 4691
€ 1579
€ 1612
€ 1715
€ 1959
€ 2326
€ 2634
€ 3180
€ 4283
€ 1490
€ 1521
€ 1618
€ 1849
€ 2195
€ 2485
€ 3000
€ 4041
Version with two lenses. Aperture ratio 1:10 or 1:9.
* : preliminary data, subject to change.

Objective Holder Magnification Ratio β' = 0
Ø Focal Length Ø Length Thread Ordernr. Price 1 pc. Price 2-5 pc. Price 6-10 pc.
13 mm
15 mm
20 mm
25 mm
30 mm
40 mm
50 mm
60 mm
50 mm
60 mm
80 mm
100 mm
120 mm
160 mm
200 mm
300 mm
25 mm
25 mm
30 mm
35 mm
40 mm
50 mm
60 mm
70 mm
28 mm
28 mm
33 mm
38 mm
46 mm*
54 mm*
62 mm*
68 mm
M23 • 1
M23 • 1
M28 • 1
M33 • 1
M38 • 1
M48 • 1
M58 • 1
M68 • 1
OUV 4.13
OUV 4.15
OUV 4.20
OUV 4.25
OUV 4.30
OUV 4.40
OUV 4.50
OUV 4.60
€ 2027
€ 2151
€ 2393
€ 2654
€ 3193
€ 4016
€ 4994
€ 6231
€ 1850
€ 1964
€ 2185
€ 2423
€ 2915
€ 3667
€ 4559
€ 5689
€ 1746
€ 1853
€ 2062
€ 2286
€ 2750
€ 3460
€ 4301
€ 5367
Version with three lenses. Aperture ratio 1:4 or 1:5.
* : preliminary data, subject to change.

Objective Holder Magnification Ratio β' = -1
Ø Focal Length Ø Length Thread Ordernr. Price 1 pc. Price 2-5 pc. Price 6-10 pc.
13 mm
15 mm
20 mm
25 mm
30 mm
40 mm
50 mm
60 mm
50 mm
60 mm
80 mm
100 mm
120 mm
160 mm
200 mm
300 mm
25 mm
25 mm
30 mm
35 mm
40 mm
50 mm
60 mm
70 mm
28 mm
28 mm
33 mm
38 mm
46 mm*
54 mm*
62 mm*
68 mm
M23 • 1
M23 • 1
M28 • 1
M33 • 1
M38 • 1
M48 • 1
M58 • 1
M68 • 1
OUV 1.4.13
OUV 1.4.15
OUV 1.4.20
OUV 1.4.25
OUV 1.4.30
OUV 1.4.40
OUV 1.4.50
OUV 1.4.60
€ 2033
€ 2151
€ 2393
€ 2654
€ 3193
€ 4016
€ 4994
€ 6231
€ 1856
€ 1964
€ 2185
€ 2423
€ 2915
€ 3667
€ 4559
€ 5689
€ 1751
€ 1853
€ 2062
€ 2286
€ 2750
€ 3460
€ 4301
€ 5367
Version with three lenses. Aperture ratio 1:4 or 1:5.
* : preliminary data, subject to change.

Available on special orderto top

  • Antireflection coating → on request
  • Based on the construction principles of these objectives, similar constructions with other focal lengths, aperture ratios, magnification ratios, achromatisations, etc., can be designed and produced. → on request
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