Overview of Elliptical mirror
An elliptical mirror is a special shaped mirror whose surface shape is part of an oval. This kind of mirror has a unique application in the field of optics, especially when it is necessary to transmit light from one point (focal point) to another. Elliptic mirrors take advantage of the geometric property of ellipses, which means that light reflected from any point on the ellipse will pass through the other focus of the ellipse.
Features of Elliptical mirror
High-Precision Focusing: Utilizing the geometric properties of ellipses, high-precision light focusing can be achieved.
Flexible Light Transmission: Light can be transmitted from one point to another over a large spatial range without being restricted to a straight path.
Improved Optical Performance: In specific optical systems, using elliptical mirrors can reduce aberrations and enhance the overall optical performance of the system.
However, there are also some challenges in the manufacturing and use of elliptical mirrors:
High Manufacturing Difficulty: Compared to planar or spherical mirrors, elliptical mirrors are more complex to manufacture and require precise machining techniques.
Specifications of Elliptical mirror
| Specifications | Commercial spec. | High precision spec. |
| Material | UV glass （Quartz, Fused silica） | |
| VIS glass （Schott, CDGM, HOYA, etc.) | ||
| IR material： （Sapphire, ZnSe, Silicon, etc.) | ||
| Special material: ( SiC) | ||
| Dimension | 5mm~350mm | |
| Dimension tolerance | ±0.1mm | ±0.05mm |
| Surface quality | 60/40 | 40/20 |
| Surface flatness | 1/4λ | 1/10λ |
| Clear aperture | >85% of dim | >90% of dim |
| Angle tolerance | 3 arc min | 5 arc sec. |
| Bevel | <0.2mm x 45deg | <0.1mm x 45deg |
| Coating | Up on clients’ request (Al, Ag mteal Coating) | |
Applications for Elliptical mirror
Optical Measurement: In optical measurement, elliptical mirrors can be used to improve the focusing of light, thereby enhancing measurement accuracy.
Astronomical Observation: In astronomy, elliptical mirrors are commonly used in telescopes and astronomical telescopes to improve observation precision and resolution.
Medical Imaging: In the field of medical imaging, elliptical mirrors can be used in microscopes and optical microscopes to enhance image quality.
Laser Focusing: In laser technology, elliptical mirrors can focus the laser beam to a small point, improving the accuracy and effectiveness of laser treatments.
Optical Fiber Communication: In optical fiber communication systems, elliptical mirrors are used to precisely guide light signals into optical fibers, enhancing communication speed and quality.
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