Edmund Optics - telecentric lenses

TML-HP

Edmund Optics

Edmund Optics now offers a new line of TML-HP (High Power) Telecentric Measuring Lenses. Telecentric lenses have been designed to replace lenses that give inaccurate or inconsistent readings due to perspective errors that yield variations in magnification through the depth of field. The lenses are ideal for both on-line and off-line production environments that require accurate measurements.

The telecentric lenses offer a quality, compact, cost-effective solution for replacing standard lenses with fixed focal lengths. They build on Edmund Optics’ established TML Telecentric series, offering additional features including smaller fields of view, a high numerical aperture, and higher magnifications of 1X, 2X, and 4X. The 2X and 4X models also feature a double-telecentric design, giving the sharpest image while minimising errors to give the most accurate measurements.

The simplified non-focusing mechanical design offers adjustable iris control. A standard C-Mount camera interface increases flexibility of use on half-inch camera sensors. They contain a front filter thread for the addition of filters, polarisers or various types of illumination.

Moritex - micromachine, telecentric lenses

SOD-10X

Moritex

As a result of the increasing need for telecentric lenses with high magnification, Moritex has developed a new micromachine lens, the SOD-10X.

Most 10x – 20x vision applications require microscopes. The new Super Optical Device (SOD-10X) delivers up to 20x magnification without affecting resolution or numerical aperture.

The SOD-10X has 1.5mm spatial resolution, five times the resolution of standard micromachine lenses. Additionally benefiting from a high numerical aperture (0.23) and long working distance the SOD-10X provides the perfect machine vision lens for demanding applications such as semiconductor or LCD alignment and inspection.

Moritex micromachine lenses maintain a constant view angle to the subject. This is achieved by keeping the optical ray paths parallel to each other. The new C-mountable SOD-10X is highly telecentric and provides the vision engineer with the best possible image for repeatable and accurate image processing.

Lens telecentricity is crucial in machine vision applications such as alignment or gauging where view angle and magnification errors need to be minimised. In such applications, the parts being inspected are subject to fluctuations in position. The lenses maintain magnification and view angle to the subject as long as the part stays within the lens's depth of field.