Calcium Fluoride and UV Fused Silica Elements
Broadband Color-Corrected Design from 193nm to 1000nm
Ideal for Fluorescence and Spectroscopy Applications
Designed with broadband applications in mind, our UV-to-NIR corrected lenses provide a consistent focal length (see chromatic shift information below) and spherical aberrations free performance for wavelengths ranging from 193nm to 1000nm. Manufactured with premier grades of Calcium Fluoride and Fused Silica, these infinite-conjugate triplets are perfect for imaging applications utilizing a wide spectrum of wavelengths. Typical uses include fluorescence research in which the emitted light is in the visible and near infrared regions of the spectrum or in dual-pass systems in which the same lens is used to illuminate the excitation material as well as collect the emissions from it.
|
FACTORY STANDARD |
PRECISION GRADE |
|
Diameter Tolerance(mm) |
±0.05 |
±0.03 |
±0.0125 |
Center Thickness(mm) |
±0.01 |
±0.03 |
±0.025 |
Radius (%) |
±1% |
±0.5% |
±0.3% |
Focal Length Tolerance (%) |
±3% |
±1% |
±0.5% |
Cosmetic(MIL-C-13830A) |
100-80 |
40-20 |
10-5 |
Figure Tolerance in λ(Pow/irreg) |
3 - 1 |
2 - 1/4 |
1 - 1/10 |
Centration (Arc min) |
6 |
<3 |
<1 |
Dia. To Thick Ratio |
9~50:1 |
||
Coating (T% avg) |
96-98% |
99% |
99.5% |
Materials |
For extremely precision sensitive system requirement, achromatic lens buys please contact us for further new information on optical materials, our engineers are more than happy to evaluate your design and have our experiences of manufacturing input help to define the most appropriate tolerances.
At Dongqiao Optics, with decades fabrication experiences, we have been providing our customer a vast number of achromatic lenses for their applications in different precision grades, please check our test plate radius available online for download to save your cost on custom achromatic doublet lens design. Particularly for cost-sensitive design, our series production capability always ensures a satisfying pricing solution.
As optical designers widely use doublets which contribute latitude to eliminate chromatic and spherical aberrations more thoroughly. We also provide excellent suggestions for glass material selection in individual design as we distinguish the importance of refractive index precision in material selection stage despite the design data in software.
Universally, with particular flint glass designers might choose, certain glass’ deliquescence attribute lead to cosmetic failure after polishing, or even affect the transmission after coating. Let us help to avoid such problem in your design to live process.
|
FACTORY STANDARD |
PRECISION GRADE |
|
Diameter Tolerance(mm) |
±0.05 |
±0.03 |
±0.0125 |
Center Thickness(mm) |
±0.01 |
±0.03 |
±0.025 |
Radius (%) |
±1% |
±0.5% |
±0.3% |
Focal Length Tolerance (%) |
±3% |
±1% |
±0.5% |
Cosmetic(MIL-C-13830A) |
100-80 |
40-20 |
10-5 |
Figure Tolerance in λ(Pow/irreg) |
3 - 1 |
2 - 1/4 |
1 - 1/10 |
Centration (Arc min) |
6 |
<3 |
<1 |
Dia. To Thick Ratio |
9~50:1 |
||
Coating (T% avg) |
96-98% |
99% |
99.5% |
Materials |
For extremely precision sensitive system requirement, please contact us for further information, our engineers are more than happy to evaluate your design and have our experiences of manufacturing input help to define the most appropriate tolerances.
Achromatic cylindrical lenses are ideal for eliminating spherical and chromatic aberration at the image plane, for example using monochromatic light source, achromatic cylindrical lenses can form a 50-90% smaller spot comparing to a singlet lens.
Achromatic cylindrical lenses are typically introduced into system designs for the highest-power laser or imaging applications, such as anamorphic projection and anamorphic photography, Dongqiao Optics can manufacture such lenses based on the custom design doublet or triplet achromatic cylindrical cemented lenses by using centering alignment device with UV curing unit, which allows us to process precision bonding and testing simultaneously. Every singlet is fully inspected before bonding.
Please check out our anamorphic lenses for more information. If you are in the stage of developing your own anamorphic lenses, don’t hesitate to contact one of our optical engineers for a free consultation to receive design input/ suggestions from the manufacturing perspective.
AchromaticCylindrical Lenses |
COMMERCIAL GRADE |
FACTORY STANDARD |
PRECISION GRADE |
Size Tolerance Length/Width(mm) |
+0/-0.30 |
+0/-0.25 |
+0/-0.25 |
Diameter (mm) |
+0/-0.15 |
+0/-0.10 |
±0.025 |
Wedge (along axis) |
5 mrad |
3 mrad |
1 mrad |
Focal Length Tolerance (%) |
±2% |
±2% |
±1% |
Cosmetic(MIL-C-13830A) |
80-50 |
60-40 |
10-5 |
Irregularity (Lambda @ 632.8nm) |
1 L |
1/2 L |
1/10 L |
Centration (Arc min) |
<5' |
<3' |
<1' |
Coating (T% avg) |
99% |
99.5% |
99.5% |
Materials |
Optical Glasses Depends On Design |
3 |
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