Silicon optics-large size silicon prism

Short Description:

Optical Prisms are used to redirect light at a designated angle. Optical Prisms are ideal for ray deviation, or for adjusting the orientation of an image. An Optical Prism’s design determines how light interacts with it. When light enters an Optical Prism, it either reflects off an individual surface or several surfaces before exiting, or is refracted as it travels through the substrate. For example, when light enters a right angle prism, it reflects off a single surface, causing the light to redirect at 90°. When light enters a wedge prism, though, a change in substrate thickness causes the light to deviate through refraction.

Production capability: 1000-3000pcs per month

Payment : Paypal, Western Union, T/T

Shipping method: Express, Airfreight, Ocean freight

We can provide

·Competitive Prices

·Quality ISO:9001-2015 Certified

·ROHS Compliant

·Short lead time

·Standard size stock available

·Fast Prototyping

·Custom Optics Fabrication

·Quality assurance

·Warranty & After sales service

Product Detail

Product Tags

Product Description

Silicon is usually used for lens in the 3 to 5µm. Its transmission is about 50% within the 1 to 6µm and above 50µm, which means that anti-reflection coating is required to improve the transmission. Besides, Silicon is also ideal for laser mirrors because of its high thermal capacity.

The refractive index of the monocrystalline silicon material is about 3.42, and the reflectivity of the silicon lens after polishing is about 30% in the air environment. Our common silicon lens and silicon window can be coated on the surface (Antireflection Coating), which can reduce the reflectivity to less than 1.5% between 3 to 5 um.

Some silicon elements, especially the silicon protected windows, are exposed to dust, acid, salt and so on in the harsh environment. The conventional multilayer antireflection coating will be damaged and affect the normal work of the equipment. At this time, we need to make DLC coating on the surface of the silicon lens

Yasi Optics offers a wide range of Optical Prisms in a variety of designs, substrates, or coating options. Designs include Right Angle, Amici, Penta, Schmidt, Wedge, Anamorphic, Equilateral, Dove, or Rhomboid prisms, in addition to Corner Cube Retroreflectors or Light Pipe Homogenizing Rods. Anti-reflection coatings include MgF2, UV-VIS, UV-AR, VIS 0°, VIS-NIR, or multiple laser line options.

Product Parameter

It is applicable in optical system such as infrared imaging,monitoring, inspection, telemetry, and infrared spectroscope ect. Its transmission wavelength  is 1.2--7 μm, which is commonly used in infrared optical system. For size available or customized size, pls contact with our sales for inquiry.

Technical    Requirement

Commercial Grade

Precision Grade

High Precision

Size range




Dimensional tolerance




Thickness tolerance




Angle tolerance




Surface quality




Surface accuracy





3-5μm  T >97%




Optical grade silicon

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