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Gold-plated off-axis parabolic reflector
- Product manual: The gold-plated off-axis parabolic reflector is a first surface reflector made of aluminum based gold film material, and its reflective surface is part of the mother parabolic surface. They can focus collimated beams or collimated diverging light sources without color difference, and their off-axis design can separate the focus from the optical path in space. Reflective design eliminates the phase delay and absorption loss introduced by transmissive optical elements, making it highly suitable for femtosecond pulse lasers.
- Category：Ultra smooth glass non spherical surface、metal reflector、glass molded lens、Levicorn spindle、ultra precision optical mold
describe
Gold plated off-axis parabolic reflector is a specially designed optical component that combines the advantages of off-axis parabolic mirrors with the high reflective performance of metal coating technology. This type of mirror is widely used in optical systems that require high reflectivity, precise focusing, and elimination of spherical aberration, especially in infrared, far-infrared, and certain specific wavelength laser systems.
General
| Conventional indicators for processing off-axis parabolic reflectors | |
| material | 6061-T6 |
| Product Category | Off-Axis Parabolic Mirrors |
| Processing size (mm) | 10-400 |
| Diameter tolerance (mm) | ±0.03 |
| Surface smoothness (American standard) | 60-40 or 10-5 |
| Surface Accuracy | λ/ 10@632.8nm Or higher |
| damage threshold | >5J/cm2，20ns，20Hz，@1064nm |
| Optical aperture | ＞90% |
| reflectivity | <99.5% or higher |
| chamfer | Protective chamfer |
| coating film | Customize according to demand |
Basic principles
The design of off-axis parabolic mirrors is based on the geometric characteristics of parabolas, which can focus light parallel to their axis of symmetry on a single focal point while eliminating spherical aberration. Off axis design means that the reflective surface does not include the symmetry axis of the original parabolic surface, allowing light to be focused without being parallel to the mirror’s symmetry axis, providing greater design flexibility and reducing optical system blockage.
Gold plating treatment is to apply a thin layer of gold film on the surface of the reflector. Gold has extremely high reflectivity, especially in the infrared and far-infrared bands, making gold-plated mirrors particularly suitable for optical systems in these bands. Gold film also has good chemical and environmental resistance, and can maintain high performance under harsh conditions.
manufacturing process
The manufacturing process of gold-plated off-axis parabolic reflectors includes:
Shape processing: Firstly, high-precision processing techniques such as computer numerical control (CNC) grinding and polishing are used to form the precise shape of an off-axis parabolic surface.
Coating: Next, a thin gold film is uniformly deposited on the mirror surface through techniques such as physical vapor deposition (PVD).
application area
Gold plated off-axis parabolic reflectors have a wide range of applications in various fields, including:
- Infrared imaging: Used in military, security, and medical imaging systems to efficiently collect and focus infrared light.
- Astronomical observation: used in astronomical telescopes, especially when observing far-infrared celestial bodies.
- Laser system: Used in laser processing and laser communication systems to efficiently reflect lasers of specific wavelengths.
- Spectrometer: In spectroscopic analysis instruments, it is used to efficiently collect and focus spectral signals.
advantage
The main advantages of gold-plated off-axis parabolic reflectors include:
- High reflectivity: The gold film provides extremely high reflectivity, especially in the infrared and far-infrared bands.
- Accurate focusing: Eliminating spherical aberration and achieving precise focusing of light rays.
- Durability: Gold film has good chemical and environmental resistance, suitable for use under harsh conditions.
- Design flexibility: Off axis design reduces optical system blockage and provides greater design freedom.
conclusion
Gold plated off-axis parabolic reflector is a high-performance optical component suitable for various applications that require high reflectivity and precise focusing. Its unique design and manufacturing technology make it an indispensable part of many high-end optical systems.
If you are interested in our optical components, you can contact us and our engineers will reply to you as soon as possible.
