The dove prism is primarily used to rotate an image without inversion. This means the image is rotated but remains the right way up. Dove prisms are commonly found in telescopes, cameras and other devices where beam alignment and image rotation are critical.
Dove prisms are used as image rotators. As the prism is rotated, the image passing through will rotate at twice the angular rate of the prism.
Dove prisms can be used with parallel or collimated light.
Normally used in total-internal-reflection mode with the hypotenuse face un-aluminized.
The useful aperture can be doubled by aluminizing or silvering the hypotenuse face of two identical prisms with their faces cemented together.
| 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 | |
Spectroscopic action: Dove prism can disperse the incident light into different colors of light waves, forming spectral lines, to divide the white light into rainbow spectrum. This property is widely used in spectroscopic instruments and spectrometers for analyzing the structure and chemical composition of substances.
Synthesis: Dove prism can also synthesize light waves of different wavelengths and combine the dispersive light waves into white light or other color light waves. This is widely used in colored optical products, such as colored window glass and photographic filters.
Magnification: In telescopes and microscopes, the Dow prism is used to magnify the image of an object. When light passes through the Dove Prism, it is refrained, narrowing the corresponding Angle, and making the object appear enlarged.
Rotation action: Dove prism can rotate the incident beam along its optical axis. This property is widely used in Angle measurement, optical gyroscope, three-dimensional imaging and other fields.
Image flip: Dow prism is widely used for image flip. The cross section of the prism is an isosceles trapezoid with a base Angle of 45°, and the light can be flipped after reflection. This property is very important in optical instruments.
Reduce weight and stray reflection: By cutting the edges and corners, the Dove prism can reduce weight and reduce the internal stray reflection, thereby improving the transmission and image quality.
Image rotation and handstand: Dove prisms can be used for image rotation and handstand applications. The light is fully reflected on the bottom surface, forming an inverted image, and the image rotates twice as fast as the rotation of the prism.
In short, Dove prism has multiple functions in the optical system, is a multi-functional optical element, widely used in physical experiments, optical scientific research, industrial control and other fields.
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