Laser Optronic S.r.l. Via B. Quaranta, 57 20139 Milano – IT P.I. 06109950151 Codice SDI KRRH6B9 Tel:      +39 02 574651 Info commerciali o generiche: lop@laseroptronic.it Amministrazione: amministrazione@laseroptronic.it

MTFtesting Mastercard

Organizzazione con sistema per la qualità certificato da Dasa-Rägister S.p.A. in conformità alla UNI EN ISO 9001:2015 IQ-0223-04

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We offer a cost effective and modular optical test bench to measure Modulation Transfer Function (MTF) and transmittance of optical components in the Visible, SWIR, MWIR and LWIR spectral ranges. In addition to the basic MTF and transmittance measurements, other lens parameters such as EFL, BFL/FFL, distortion, and field curvature can be measured. The OptiShop design enables the user to switch from MTF to transmittance measurements without the need of re-alignment. The OptiShop allows for video and slit scanning MTF test.

VIETNAM:Alpha Industrial Park, Tu ThonVillage, Yen My District, HungYen Province 17721+84 221-730-8668sales-vn@avantierinc.com

MTF

A fiber collimator may be adjustable, with screws for controlling beam directional and working distance, or fixed. It may be polarization maintaining. The exact fiber collimator you need will depend on the specifications of your application and the wavelength of light you need to have collimated as well as on collimated beam size.

LensMTF

At Avantier we can produce custom high-performance fiber collimators for every application. Whether you need a non-adjustable, permanently attached collimator for pigtailed fibers or a thermal-resistant adjustable collimator for use with a high powered laser, we can get you what you need. Our experienced optical designers are available to work with you and come up with a solution that provides the collimation you need while surmounting any challenges you might have. Call us today to schedule a first introductory consult or place your custom order.

Fiber collimators designed to attach permanently to a fiber.These collimators are both compact and affordable, and a good solution for use with bare fibers.

Modulation transfer function

Sometimes, a fiber collimator is used together with another optical component to perform a special function. The combination of a fiber collimator and quarter-wave plate will produce a half-wave plate reflector, and a combination of a fiber collimator with a Faraday rotator will produce a fibered Faraday mirror.

Fiber collimators with mechanical interfaces that attach to a fiber connector. These can be designed to connect with whichever fiber connector you use; FC/PC, FC/APC and SMA are two popular options. These types of collimators are more expensive, but also more flexible as they can be easily attached or removed from a setup. Fiber collimators may include different types of lenses, including gradient-index (GRIN) lenses, singlet or doublet lenses. When you have a fiber with small mode radius and large beam divergent, you may need to use an aspheric lens to minimize aberrations.

Whereas the slit scan method is the traditional way of measuring optical systems’ MTF, now modern digital cameras from visible to far IR spectral ranges allow shorter testing times.  CI’s video capture MTF option allows for real-time measurement of optical components as well as systems. It is used when high throughput test rate is required. CI Systems has a developed diffraction limited, chromatically corrected objective for the SWIR, MWIR and LWIR MTF tests. It enables adequate sampling and low aliasing. OptiShop is designed to be useful as a quality test system for a wide range of FLIR’s and other cameras.

A fiber optic collimator designed for a large collimated beam will be longer and larger than one designed for a small beam. Collimators to be used in high power laser applications must also be optimized for the high power levels and heat present in such situations.

Ufficio di Roma Via N. Tommaseo, 3 00063 Campagnano di Roma (RM) – IT P.I. 06109950151 Codice SDI KRRH6B9 Tel:       +39 06 9041786 Info commerciali o generiche: lop@laseroptronic.it Amministrazione: amministrazione@laseroptronic.it

The output from an optical fiber can be collimated with a simple collimation lens placed at a fixed distance from the end of the fiber; a distance equal to the focal length. For ease of use, fiber collimators that are mounted to the fiber are often preferred.  These come in two types: