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The working principle of ridge prism is based on total internal reflection (TIR) and refraction of light. When light enters a prism, it undergoes total internal reflection on the slopes of two right angled prisms and then exits from the other side. This structure not only changes the direction of light propagation, but also flips the image to the correct direction, which is a very important function in binoculars.
characteristic
- image correction：The ridge prism can flip inverted images to the correct direction and is an essential component in binoculars.
- Compact design：Compared to other types of image flipping systems, ridge prisms provide a more compact design solution, making binoculars more lightweight.
- High quality optical performance：Roof prism can provide high-quality images without introducing too much optical distortion.
- durability：Due to its simple and sturdy structure, the ridge prism is very durable and suitable for use in various environments.
Roof Prism is an optical element used to change the path of light, commonly found in optical systems, especially in binoculars. Its name comes from its unique shape, resembling the roof of a house. The ridge prism is mainly composed of two right angled prisms, whose inclined surfaces meet to form a 90 degree “ridge” edge. Imaging equipment.
application
Roof prism is mainly used in binoculars for image correction. In addition, they can also find applications in other optical systems that require compact optical paths and image flipping, such as certain types of monocular telescopes, optical measurement equipment, and high-precision imaging systems.
types of
There are two main types of ridge prisms, namely:
- Abbe Kaunig prism：This type of ridge prism improves optical performance by extending the optical path length and is commonly used in high-end binoculars.
- Schmidt Pechan prism：This type of ridge prism achieves total internal reflection by adding a reflective coating on one surface of the prism, making the entire system more compact.
advantages and disadvantages
advantage：
- Provide compact optical system design.
- Being able to flip images in the correct direction enhances the viewing experience.
- High quality image performance with minimal optical distortion.
disadvantage：
- Compared to other image flipping systems, the cost may be higher.
- Some types of ridge prisms may limit light flux and affect brightness.
The ridge prism, with its unique design and excellent optical performance, not only provides compact and high-quality images, but also meets the image correction needs of optical devices such as binoculars.
| Conventional indicators for processing ridge prisms | |
| material | optical glass |
| Product Category | roof prism |
| Processing size (mm) | 5-100 |
| Diameter tolerance (mm) | ±0.03 |
| Surface smoothness (American standard) | 20-10 or higher |
| Surface Accuracy | λ/ 10@632.8nm Or higher |
| Optical aperture | ＞90% |
| angular accuracy | ＜10″ |
| Ridge angle accuracy | ＜3″ |
| coating film | Customize according to demand |
