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In addition to the stock optical components described in these data sheets, we can provide a wide range of custom optics made to the users' own specification in a variety of materials (see our "Optical Material"). Medium to high volume orders are particularly welcome. Custom-made components are normally rather costly; however, you will find our prices very attractive. We can also arrange for you to discuss your requirements with the engineers involved.
Optical design software
Our manufacturer has powerful optical design software which enables us to provide the best components for a custom system. Some of the main functions of this software include:
Geometric aberration calculation of zoom lens
Automatic correction with adaptive method and damped least squares method
OFT calculation with autocorrelation method and DFT method
Tolerance calculation
and more
Optical Materials
We can provide optical components from a wide variety of optical material including:
| General optical glass: | Schott glass, Ohara glass |
| Special glass: | Fused silica, Dynasil fused silica, colour glass, float glass, Zerodur |
| Optical crystal: | Sapphire, CaF2, BaF2, MgF2, LiF, KBr, KCl, NaCl, MgO |
| Quartz, Silicon, Ge, ZnSe, ZnS, GaAs | |
| Calcite, YVO4, LiNbO3, BBO, TeO2, LBO, KTP, YAG |
The following table shows some of the main properties of the optical materials we supply:
| Materials | Refractive Index | Transmission range (mm) | Thermal Expansion Coefficient (10-6/K) |
| BK7 | 1.5164 (588 nm) | 0.330 - 2.1 | 7.5 |
| SF11 | 1.78472 (588 nm) | 0.370 - 2.5 | 6.8 |
| SF14 | 1.76182 (588 nm) | 0.420 - 2.0 | 8.1 |
| Fused silica | 1.4858 (308 nm) | 0.185 - 2.5 | 0.54 |
| CaF2 | 1.399 (5.0 m m) | 0.170 - 7.8 | 18.85 |
| Sapphire | 1.775 (1.0 m m) | 0.180 - 4.5 | 8.4 |
| Silicon | 3.4179 (10 m m) | 1.200 - 7.0 | 4.15 |
| Ge | 4.003 (10 m m) | 1.900 - 16 | 6.1 |
| ZnSe | 2.40 (10 m m) | 0.630 - 18 | 7.8 |
| ZnS | 2.2 (10 m m) | 0.380 - 14 | 6.5 |
| MgF2 | no = 1.3836 (405 nm) | 0.130 - 7.0 | a: 13.7 |
| ne = 1.3957 (405 nm) | b: 8.48 | ||
| LiF | 1.39 (500 nm) | 0.150 - 5.2 | 37 |
| KBr | 1.526 ( 10 m m) | 0.280 - 22 | 43 |
| YVO4 | no = 1.9500 (1.3 m m) | 0.400 - 5.0 | a: 4.46 |
| ne = 2.1554 (1.3 m m) | b: 11.37 | ||
| CaCO3 | no = 1.6557 (633 nm) | 0.210 - 2.3 | a: 24.39 |
| (Calcite) | ne = 1.4852 (633 nm) | b: 5.68 | |
| Quartz | no = 1.5427 (633 nm) | 0.200 - 2.3 | 7.07 |
| ne = 1.5518 (633 nm) | |||
| a -BBO | no = 1.6749 (532 nm) | 0.190 - 3.5 | a: 4.0 |
Lenses
Our manufacturer stocks thousands of test pieces of different radius for fabricating lenses. Because of our manufacturer’s large tool stocks, our customers may save both delivery time and the additional charge for tooling, which can be quite a high percentage of the cost for small orders.
| 1. Spherical Lens | Capability:30,000 pcs/month |
| 2. Cylindrical Lens | Materials: please refer to "Optical Material" sheet |
| 3. Achromatic Lens | Diameter: 1 - 2,000 mm |
| 4. Doublet and triplet | Focal length: 3 – 10,000 mm |
| 5. Aspheric Lens | |
| 6. Lenses Assembly |
Windows and Wedges
Capability:
Material: please refer to "Optical Material"
Diameter: f 1 - f 2000 mm
Thickness: as thin as 50m m
Flatness: up to l /50 @ 632.8 nm
Parallelism: up to 0.5 arc seconds
Surface quality: up to 10/5 scratch and dig
Prisms
Schmidt Prisms,
Penta Roof-Angle Prisms,
Polygonal Prisms,
Porro Prisms,
Pechen Prisms,
Amici-Dove Prisms,
Coupling Prisms,
Hollow Retroreflectors and others are also available.
Our manufacturers excel in producing special shape prisms.
Polarizing Optics
We supply birefringent crystals such as YVO4, LiNbO3, MgF2, BBO, TeO2 and Quartz crystals. Several new polarizing optical components have been developed based on some of our new birefringent crystals. The new devices include Glan Laser Polarizing Prisms, Rochon Polarizing Prisms, Polarizing Beamsplitters, new Phase Retardation Plates, Achromatic Fresnel Rhomb Retarders, Birefringent Filters and new Birefringent Wegdes.
Special Coatings
Inspection Instruments
Our products have all undergone strict quality control and careful inspection before delivery. Some of the main inspection instruments are:
0.5 arc second goniometer
Laser plano interferometer
Tywman Green interferometer
Pekin-Elmer lambda 19 UV/VIS/IR spectrophotometer
Zygo GPI-XP interferometer
pico-second Nd:YAG laser
40mW He-Ne laser
CW Diode pumped Green laser
Inspection reports and pictures are available on request.
Custom optics examples
0.8 mm tiny lens
Sapphire lenses
Single lens with double focal length using crystal birefringence
High extinction multiple polarization beamsplitter
1arc second precision right angle prism
Right angle prism with arc edges
Small precision retroreflector
50 mm thin crystals for femto-second ultra-short laser application
Elliptical golden reflective mirror
Wavelength variable narrow band filters
Narrow band filters with central wavelength at 0.7 – 10 mm
Neutral density filter
MgF2/ Quartz Achromatic waveplates
Sapphire waveplates