Edmund Optics

Band-pass filters attenuate signal frequencies outside of a range (band) of interest. In image analysis, they can be used to denoise images while at the same time reducing low-frequency artifacts such a uneven illumination. Band-pass filters can be used to find image features such as blobs and edges.

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We also adjust the properties of the cement individually for each component. For this purpose, we combine flat optical and spherical as well as aspherical components with specific cements to form subgroups with multiple optical functions. In this way, we achieve an optimal beam path with maximum performance for each assembly.

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One method for applying band-pass filters to images is to subtract an image blurred with a Gaussian kernel from a less-blurred image. This example shows two applications of the Difference of Gaussians approach for band-pass filtering.

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Even with multiple media transitions in optical assemblies, we find the right solution that ensures the best beam passage. In this way, we reduce stray light and achieve the highest transmission for components such as deflection prisms, beam traps, projection solutions, beam splitters and much more through our machining.

We manufacture optical assemblies with complex optical properties for you – with the highest transmission. That is why we have a large selection of materials and a wide range of coating systems at our disposal. With modular production chains at the highest technical level and powerful measurement technology – in the in-house test center, with ZEISS your optics project is in the best hands from the idea to implementation.

Each individual part and each optical assembly is manufactured by us in specially coordinated processes. Depending on the task, we put together the necessary work steps in a modular manner and gear the production process entirely to the desired result.