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Prism

In optics, a prism is a transparent optical element with flat, polished surfaces that refract light. At least two of the flat surfaces must have an angle between them. The exact angles between the surfaces depend on the application. The traditional geometrical shape is that of a triangular prism with a triangular base and rectangular sides, and in colloquial use "prism" usually refers to this type. Some types of optical prism are not in fact in the shape of geometric prisms. Prisms can be made from any material that is transparent to the wavelengths for which they are designed.

N-BK7 Beamsplitter Penta Prism

Pentaprism beamsplitters are constructed by gluing a precision pentaprism and a wedge prism together, using an appropriate interference coating on one of the traditional reflective surfaces. Since slight movement of the pentaprism does not affect the true right angle at which light is reflected, the deviation between transmitted and reflected light is highly controllable and does not vary by more than 10 arc seconds.

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N-BK7 Penta Prisms

Pentagonal prisms cannot achieve internal total reflection based on the critical-angle principle. Therefore, the two reflective surfaces of this prism are generally coated with aluminum film and black paint, and the incident and outgoing surfaces are coated with MgF2 single anti-reflective coating.

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N-BK7 Corner Cube Retroreflectors Prisms

Corner Cube Retroreflector has been widely used in laser measurement, optical communication, robot navigation, traffic safety, scientific research and teaching due to its advantages of high-precision reflection, angle insensitivity, strong durability and easy installation and commissioning.

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BK7 And Fused Silica Glass Dove Prisms

Compatibility with Various Coatings: Dove Prisms can be coated with various materials to enhance their optical properties, such as anti-reflection coatings or aluminization, depending on the specific application requirements. Reduced Weight and Internal Reflection: As a truncated right-angle prism, the removal of the pinnacle contributes to reduced weight and minimized internal reflection, improving overall efficiency.

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60° Dispersion Equilateral Prism

Betensh Optics specializes in manufacturing custom equilateral prisms, which are triangular optical prisms with three identical side lengths and three 60° apex angles. These prisms are commonly used for dispersive purposes, such as separating a white light source into a spectrum of multiple colors. Depending on the substrate materials, equilateral dispersive prisms can be selected to break up different spectral regions. They function similarly to a diffraction grating but offer better brightness, greater endurance to power, and fewer issues with higher orders.

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MgF2 Coated, Half pentagonal prism Beamsplitter

Betensh Optics provides a variety of high-quality Half-Penta prisms with different coatings and sizes, including UV Fused Silica Half-Penta prisms, N-BK7 Half-Penta prisms, and CaF2 Half-Penta prisms. These Half-Penta prisms are widely used in optical systems, laser applications, medical instruments, and other industries.

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MgF2 Coated Paul prism

Paul prism (also known as laser linear generator lens) is an optical marking prism, which can be optimized for the input of laser beam with the diameter of 0.8mm. Paul optical prism makes the laser beam can be optimized into a straight line with uniform optical density, good stability and good linearity after passing through. Different from the cylindrical lens which produces the characteristics of central hot spot and faded edge gaussian beam, it can eliminate the distribution of central hot spot and faded edge of gaussian beam and form a straight line with uniform energy distribution.

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High Precision Rhomboid Prism Rhombic prism

rhomboid prisms are commonly used to displace a laser beam without changing its direction. In imaging applications, rhomboid prism will displace the optical axis without inverting the image. The lateral displacement is equal to the length of the prism. Rhombus prisms are widely used in the fields of optics, imaging, and photonics.

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BBAR Coated Hypotenuse Right Angle Prisms

Right angle prisms are often used to change the path of light, or to redirect a beam of light by 90°. Right angle prisms are prisms designed with a 90° angle, producing an inverted or inverted left-hand image depending on the orientation of the prism. Using two right angle prisms simultaneously is ideal for applications where image or beam displacement is required. These prisms are also called specular reflection prisms.

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N-BK7 and Fused Silica Roof Prism

The roof prism is a type of prism with two mutually perpendicular reflective surfaces. This prism can deflect light by 90 degrees and is not limited by the critical angle of total internal reflection, allowing it to accept incident light at larger angles. Roof prisms are relatively small in size and are commonly used in very compact binoculars because they allow the objective lens and the eyepiece to be aligned in a straight line.

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N-BK7 and Fused Silica Wedge Prisms

The characteristics of wedge prisms include their very small apex angle (typically less than 1/10 radian), which results in minimal deflection of light as it passes through, regardless of the angle of incidence. In optical instruments, two wedge prisms are often combined and rotated relative to each other to produce different deflection angles or to convert the minimum deflection angle of light into the relative rotation angle of the two prisms. This setup is used to compensate for small angular deviations in the measurement of light. Such prisms find applications in many optical instruments, including military rangefinders and camera viewfinders.

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