As the basic optical element, singlet lenses are commonly used in engineers’ design, and further assembly works for a variety of applications such as imaging collimating. At Dongqiao Optics, our manufacturing capability covers Plano Concave/Convex, Bi-Concave, Bi-Convex, Positive and Negative Meniscus, ranged from many variations of optical glass and fused silica and even crystal. With our reliable coating technique, AR or V-coatings can be applied to reach expectation. Special treatment i.e. edge blackening / special packaging / labeling also available upon request.
Our singlet lenses production competency helps our customers to build their unique and cutting edge applications such as microscopy device, diameter 2.5mm~3.5mm design, for projection/ observation applications, we can deliver 180+mm in diameter singlet lens. Besides regular visible spectrum singlet lenses, NIR / SWIR/ / LWIR/ MWIR lens are also available at our facility, please refer to our IR optics for more information.
|
COMMERCIAL GRADE |
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 |
CDGM, Ohara, Schott & Infrared Materials |
SINGLET LENSES
Configurations available:
Plano-Convex, Plano-Concave, Bi-Concave, Bi-Convex, Positive and Negative Meniscus
At Dongqiao Optics, we have been continuously providing the most precision micro and micro-miniature optical components manufacturing service as well as optical design and assembly for sophisticated micro imaging devices, for scientific, commercial, medical and sensory technology markets. We are equipped to meet the most challenging specifications and tolerances.
Our micro lenses fabrication capability ensure our clients products tiny as 3mm in diameter, 0.8mm in center thickness, 1/4 lambda of surface accuracy. All of our miniatures lenses are built in custom manner, please talk to our engineer for your own micro system requirement, to learn how we can help you today.
This product is polished spherical lenses made by optical glass fused silica, sapphire or other optical materials which have relatively high transmission rate for a diode with an anti-reflection coating. Widely used for coupling light in and out of fibers. It has the advantage of easy for fabrication, light weight which can be considered as the ideal components for optical communication applications.
Although due to the spherical aberration which leads to lower coupling efficiency, its unique easy-packaging attribute guaranteed ball lenses are suitable for series production for optical communication applications with no doubts, especially compared to aspheric lenses.
Dongqiao Optics supplies a broad range of ball lenses to your specifications; we offer in fused silica with excellent UV and IR transmission between 185nm to 2100nm, please refer to its transmission curve for detailed information. Sapphire ball lenses are also available upon custom specifications, in a range of alternative diameters.
BallLensSpecs |
COMMERCIAL GRADE |
FACTORY STANDARD |
PRECISION GRADE |
Materials |
BK7 or equivalent, Sapphire, Quartz, Fused Silica |
||
Diameter |
± 10µm |
± 5µm |
± 2.5µm |
Figure (Sphericity) |
5 Lambda(@632.8nm) |
3Lambda (@632.8nm) |
1Lambda (@632.8nm) |
Focal Length Tolerance (%) |
±5% |
±3% |
±0.2% |
Cosmetic(MIL-C-13830A) |
80-50 |
40-20 |
10-5 |
Further, It capability fits other applications such as endoscopy, bar code scanning or laser measurement.
For hemispheres Half-Ball Lenses, they offer uniform dispersion of light used in LED displays, focusing and coupling applications. Dongqiao Optics provides high refractive index glass and sapphire hemispheres products for little spherical aberration, through UV to IR spectrum.
Hemisphere Half Ball Lens Specs |
COMMERCIAL GRADE |
FACTORY STANDARD |
PRECISION GRADE |
Materials |
BK7 or equivalent, Sapphire, Quartz, Fused Silica |
||
Diameter |
± 25µm |
± 10µm |
± 2.5µm |
Figure (Sphericity) |
5 Lambda(@632.8nm) |
3Lambda (@632.8nm) |
1Lambda (@632.8nm) |
Focal Length Tolerance (%) |
±5% |
±3% |
±1% |
Cosmetic(MIL-C-13830A) |
80-50 |
40-20 |
20-10 |
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 ourtest plate radius available online for download to save your cost on custom achromatic doublet lens optical 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.
|
COMMERCIAL GRADE |
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.
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