Optical Lenses
Lenses are composed of two surfaces and can be flat (planar), spherical, aspheric, or cylindrical. These surface shapes can all be measured for surface form error, while also measuring the transmitted wavefront of a single lens or lens system. Fuzhou Mok Optics uses advanced interferometry technology to provide accurate lens measurement solutions to ensure optimal performance.
Optical Windows
Optical windows are composed of two flat, polished surfaces. First, the surface flatness of the window will determine its performance and needs to be measured. These surfaces may need to be parallel or have a well-defined wedge between them.
The uniformity of the refractive index is another important metric used to define the quality of an optical material. Homogeneity is usually measured by glass suppliers and refers to the variation in the refractive index throughout the optical material. Homogeneity can be measured using any of our interferometers, but our advanced models can quickly and reliably measure both nonlinear and linear uniformity.
Optical Mirrors
Mirrors are reflective surfaces used to direct light. Their advantage is that they provide the same performance regardless of wavelength. However, reflective elements have much higher surface shape requirements than refractive elements. These surfaces can be flat, spherical, aspheric, cylindrical, or freeform and can be measured using our interferometers and accessories, ensuring that your mirror elements are measured with the highest accuracy and reliability.
Prisms and Corner Cubes
Like mirrors, prisms are used to direct light where it is needed. Each face of a prism is built at a very specific angle relative to the other faces, providing a consistent output angle relative to the input. It is important to measure these angles for accuracy, as they cannot be changed after completion.
Common prism measurements include right-angle prism error, corner cube dihedral angle, surface flatness of prism faces, beam deviation, and transmitted wavefront error. Fuzhou Mok Optics’ advanced metrology solutions ensure that all of these critical parameters are accurately evaluated to meet stringent optical requirements.
Beamsplitters
Beamsplitters are unique in that they can both transmit and reflect light. This dual functionality makes the specifications of transmitted wavefront and surface form errors critical. Some beamsplitters are composed of component prisms, each of which must be measured prior to assembly. Fuzhou Mok Optics provides the necessary tools and techniques to accurately measure the transmitted wavefront and surface form for beamsplitter applications.
Spherical Surfaces
Spherical surfaces used for lenses and mirrors are defined by their radius of curvature. Together with surface form error, these two quantities will determine the performance of a lens or mirror. Verifying these two parameters is critical to ensuring the performance of an optical component. Spherical surface shape is tested using a transmission sphere to generate an ideal reference waveform, and Fuzhou Mok Optics provides precision test equipment to accurately measure radius of curvature and surface form.
Cylindrical Surfaces
Cylindrical optics are more challenging to test in optics than flat or spherical optics. Testing cylindrical optics with traditional interferometers requires generating a cylindrical wavefront that matches the curvature of the surface. Since cylindrical optics are inherently more difficult to manufacture, creating a good interferometric reference can be challenging.
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