MOTORIZED COLLIMATORS

Overview

 

The motorized collimators are designed to fulfill the high demands in the automotive industry for flexible use, fast interchangeability, easy integration into own software applications. The collimators can also be adapted to different test specimen specifications or measurement tasks easliy. In addition to 6 different focal lengths, two filter variants (machine vision, human vision) are available. The high-precision motorized linear guide has a travel of ±9 mm. Additionally, the linear guide can be supplied with a length measuring system to increase position repeatability and reproducibility. Depending on the focal length of the collimator, the travel distance allows imaging distances from +0.1 m to ∞ and from -∞ to - 0.1 m. The machine vision filter (white light filter) has an almost constant intensity distribution over the entire visible spectrum and has a color temperature of approx. 5700K. The human vision filter reproduces the sensitivity curve of the human eye (photopic eye filter) and has its maximum sensitivity at approx. 520 nm. A special diffuser ensures high homogeneity (Lambert characteristic) over the whole reticle structure.

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The collimators can be supplied with different reticle patterns for MTF (e.g. 10 µm crossline, negative) or SFR (e.g. checkerboard pattern) applications.

Due to the modularity, the ideal solution for the corresponding application can be selected from 24 different collimators of almost identical design. This also allows an existing system to be quickly adapted to a new measurement task by MÖLLER-WEDEL OPTICAL GmbH. Thus, the filters, reticle or focal length can be changed and can be used for their new purpose after a recalibration.

The calibration procedure used for focus determination and the high positioning accuracy of the linear motion guide make it possible to adjust the reticle at the factory ±5 µm exactly into focus of the objective used and to calibrate the average deviation from the ideal focus position as a zero reference for the system.

Each collimator is delivered with a calibration certificate stating the positioning reproducibility, repeatability and the achived infinity setting of the objective.