With the emergence of more sophisticated technologies, the science of imaging continues to evolve. However, not all devices and the images they produce are equal. Modular Transfer Function or MTF Testing
is done to measure the optical performance of a lens: How capable is it in producing defined, high-quality images?
Founded in 1991, Image Science is the leading name in delivering comprehensive MTF Measurement
services. They have a wide array of state-of-the-art equipment that adhere to the highest level of industry standards. Whichever industry you may be in, they can provide prompt yet accurate measurements at all times.Expertise in Different Parameters
While Image Science specializes in popular MTF testing protocols, they are also proficient in measuring a number of other parameters.
Phase transfer function. The PTF contains information about a target image’s position and orientation. If portions of it are displaced than others, then the whole target image is considered distorted.
Effective and flange focal lengths. The former is the distance between a lens’ rear focal and principal points. The latter, on the other hand, is the distance between the image sensor plane and the mounting flange of a lens mount system.
Field of view. The area of inspection of the user of the imaging device.
Encircled energy and ensquared energy. These are measures of energy concentration in an optical image.
Aberrations. There’s no such thing as a perfect imaging device. To some degree, it will contain some aberrations. Image Science can help measure the presence of the following aberrations:
Field curvature. The field of curvature refers to the phenomenon caused by the curved nature of imaging elements, making an object appear sharp only at certain portions of the frame.
Distortion. It is an aberration that causes physically straight lines to look as if they’re curved in images.
Astigmatism. It occurs when rays enter a lens along the sagittal plane where the imaging device is focused at, at a different point.
Chromatic abberation. This optical anomaly happens when an imaging lens is unable to focus different wavelengths at the same point.
Vignetting. This refers to the reduction of an image’s brightness toward the edges.A Wide Array of Test Benches and Applications
As a premier company that offers MTF measurement services, Image Science uses different MTF test benches. Their roster covers a diverse range of spectral ranges:Ultra-Violet B (193 to 360 nm)Near Ultra-Violet (325 to 500 nm)Visible (400 to 700 nm)Near Infrared (700 to 1000 nm)Short-wave Infrared (1 to 3 um)Medium-wave Infrared (3 to 5 um)Long-wave Infrared (8 to 12 um)
Image Science supplies these benches to clients for different applications — from research and development to product testing. For instance, if a client wants to measure the optical performance and distortion of large cinematography lenses. Image Science can provide a test bench for that.
If you need to conduct MTF testing for your imaging device, Image Science is here to deliver accurate measurements for you. Learn more about them on their website, www.image-science.co.uk. For enquiries, call them at (+44) 01865-400867 or email them at [email protected]