Knowledge Hub

01.03.2024 | Technical paper

Lens Details: What To Know Before You Purchase

By Stuart W. Singer and Jim Sullivan

Technical data sheets for optical lenses are not standardized, allowing vendors to present data in any way they choose, potentially leading to misleading claims and preventing fair comparisons. Generic terms like MTF often lack clarity about what they measure and how they're calculated, leaving buyers to decipher. Even when specifications are governed by standards such as ISO or DIN, they're often poorly understood and leave significant leeway.

13.03.2024 | Filters

Filter benefits

A number of unique features set Schneider-Kreuznach optical filters apart from other filters on the market. One of the most important features is the consistently high transmission without transmission fluctuations. The filters open quickly to provide maximum light output while blocking unwanted wavelengths. In addition, the tolerance is less than 1% and all filters are inspected and controlled to ensure they meet the highest quality standards.

08.03.2024 | Lenses

Focusing compact C-Mount lens

Find instructions on accurately focusing C-Mount lenses on our website. Our guide offers insights and techniques to help you achieve optimal focus for your industrial imaging needs. Discover how to focus C-mount lenses and enhance your imaging capabilities today. 

01.03.2024 | Technical paper

Learn the truth behind Megapixel lenses

By Stuart W. Singer and Jim Sullivan

Discover the truth behind the "megapixel" lens myth. By exposing the misconceptions perpetuated by leading manufacturers, we clarify the meaningless nature of this term and empower you to make informed choices for your camera setup. Join us as we demystify lens specifications and uncover the critical parameters that are essential to maximising your camera's potential.

09.09.2023 | Technical paper

Specifying lenses for megapixel cameras

By Stuart W. Singer

Continuing advances in high-resolution sensors with higher pixel densities and smaller pixels are challenging optics manufacturers to produce lenses with increased performance. To understand how lenses can affect the performance of imaging systems, it is necessary to grasp the physics behind diffraction, lens aperture, focal length, and the wavelength of light.

09.09.2023 | Technical paper

Matching Lenses and Sensors

By Stuart W. Singer

With pixel sizes of CCD and CMOS image sensors becoming smaller, system integrators must pay careful attention to their choice of optics.

11.12.2024 | Lenses

Wide-angle lenses

Capture wide scenes with lenses significantly shorter than the image circle, ideal for large views.

01.03.2024 | Technical paper

Bilateral telecentricity

By Dr. Rolf Wartmann

In the last few years, the techniques of noncontact optical measuring technology have experienced a tremendously rapid increase. This has come about, in the first place, because the use of electronic image processing has made it possible to automate whole chains of processes. In the wake of this development, the object-side telecentric lenses have become more and more widely accepted. Their ability to form an image independent of its distance, but always with the same size, is the basic precondition for a successful automatized measurement process. While object-sided telecentrics moved into the center of attention, the image side, i.e., the area between the lens and the camera, disappeared almost completely from view. At the same time, the organization of this side is just as important for highly exact measurement technology as that of the object side.

08.03.2024 | General

Tradition meets innovation

Over 110 years of optical manufacturing experience learn more about our company and capabilites.

01.03.2024 | Lenses

Renaming - read our new lens names

It is essential for our customers to understand how to effectively read and use lens specifications to make informed decisions in industrial imaging applications.

15.03.2024 | Lenses

Pixel Size - Sensor Size

Unlock the potential of your imaging system with our comprehensive pixel/sensor size guide. Understanding the relationship between lens compatibility and sensor size is critical to achieving optimal results in industrial imaging and machine vision applications.

01.03.2024 | Filters

MRC coating

Explore how MRC coating simplifies lens maintenance by making cleaning easier and more efficient. With a high wetting angle of contact, MRC-coated lenses repel water droplets, ensuring clear and pristine images even in challenging conditions.

01.03.2024 | Technical paper

New perspectives in coating

By Michael Haag

In our pursuit of product improvement, we have ventured into a new path of surface-coating technology. This approach provides novel possibilities for coating optical elements.

01.03.2024 | Technical paper

The image quality of lenses for digital photography

By Dr. Karl Lenhardt

Dive into our comprehensive guide as we explore the critical factors to consider when choosing a lens. From image quality to features and beyond, we'll equip you with the knowledge you need to make the right choice for your imaging needs.

26.03.2024 | Lens

What is a Variogon?

„Variogon" is the brand name for a vario-lens made by Schneider-Kreuznach. But what is a vario-lens? It is a lens that has no fixed focal length and can be changed by the user with certain limitations. This is accomplished without having to bring the image of the subject into focus again and again each time the focal length is changed. A lens of this kind is also known as a zoom lens.

01.03.2024 | Technical paper

Non-destructive measurement of antireflective coatings on curved surfaces

By Lothar Völker and Michael Schulz-Grosser

To minimize disruptive reflection losses, optical components such as lenses and eyeglasses are now equipped with highly effective antireflective coatings. However, the measurement methods used in quality control using scanning spectrophotometers are often non-destructive in practice and can hardly be used at arbitrary locations on a curved surface. A special measurement head design in conjunction with a diode array spectrometer provides a solution.