Custom Optics
The skillful engineers and technicians at GolddragonOptics are developing specialized fabrication techniques for optical components to meet a wide range of requirements up to the highest international standards.

In addition to standard optical components described in the previous pages of this catalog, GolddragonOptics can produce a wide variety of custom products in various materials with customer specified tolerances. Please contact our sales engineers for assistance with your custom requirement.

Optical Design
GolddragonOptics has a powerful optical design software which enable us to optimize your custom system. Some of the main functions of this software include:
Windows and Wedges
Materials: Opticsl glass, UV-grade fused silica, CaF2, Ge, Si, etc.
Diameter: F2 - f300 mm
Thickness: As thin as 80um
Parallelism: Up to 1 arc seconds
Surface quality: Up to 10-5 scratch and dig

Lenses
GolddragonOptics possesses thousands of radius test pieces for fabricating lenses in stock. Our customers will benefit from our large tools inventories because they do not need to pay additional tooling charge, In addition to that, our customers can have greater flexibility in designing their systems since there is a wide valiety of radius that can be selected. Large tool stock further means quicker delivery due to saving time in the fabrication of tools.
1. Spherical Lens
2. Cylindrical Lens
3. Achromatic Lens
4. Lens Assembly
Materials: Opticsl glass, UV-grade fused silica, CaF2, Ge, Si, etc.
Diameter: F5- f150 mm
Focal Length: 8 - 1, 000 mm
Surface quality: Up to 20-10 scratch and dig

Prisms
GolddragonOptics has developed the ability to fabricate with high precision Penta Prism (up to 1" at 90 deviation) and Beamsplitter Penta Prisms. Schmidt Prisms, Penta Roof-Angle Prisms, Polygonal Prisms, Porro Prisms, Pechen Prisms, Amici-Dove Prisms, Coupling Prisms, Hollow Retroreflectors, ...Are also available in GolddragonOptics. GolddragonOptics is especially good at fabricating special shape prisms.

Special Coatings
With the combination of advanced coating machines and many experienced coating engineers as well as the latest design techniques, we are able to do a wide range of coatings. The main coatings GolddragonOptics provides are listed following.
1. Single Layer MgF2 Anti-Reflectance Coatings
2. Multilayer Anti-Reflectance Coatings
3. Multilayer Broad-Band Anti-Reflectance Coatings
4. Partial Reflective Coatings
A. All Dielectric Beam Splitter Coatings
B. Metal Broad-Band Beam Splitter Coatings
5. High Reflective Coatings (Mirror, Total reflection)
A. Dielectric coatings: Narrow-Band, Broad-Band.
B. Metal Mirrors: Protect-Al, Enhance-Al, Protect-Ag, Enhance-Ag, Protect-Au, Enhance-Au.
6. Filter Coatings
A. Long Wavelength Pass Filter (LWP)
B. Short Wavelength Pass Filter (SWP)