Type KM - Motorized Collimators

The collimators are designed for "active alignment" of cameras for the automotive industry. As standard, the collimators are equipped with a reticle for MTF measurement (transparent crosshair on dark background, slit width 10 µm). There are 4 different focal lengths to choose from. These allow an ideal adaptation of the achievable image distances to the optics to be tested. All motorized collimators feature a high-precision linear guide with a travel of ±9 mm. Depending on the focal length, image distances from + 0.1m to +∞ and from -∞ to -0.1m can be generated. In addition to the focal length, various illuminations can be selected. As white light profiles D65 (6500K), Machine Vision (5700K) or Human Vision (Photopic Eye Filter) are available. Narrowband spectra include 850 nm (NIR) and 940 nm (NIR), further narrowband spectra from the visible to the NIR range are available on request. With the motorized collimators, it is also possible to integrate two different light sources into one collimator as an option: 1. D65, machine vision or a narrowband spectrum 2. a narrowband spectrum from the visible or NIR range The modular design of the collimators means that the variants can be freely configurated. The filter and objecti-ve lens can be adapted to the inspection task. The length measurement system included with motorized collimators, significantly improves the achievable accuracy and reproducability of positioning. The calibration procedure used to determine the focus position and the high positioning accuracy of the linear guide allow the reticle to be set at the factory to within ±5 µm of the focus of the objective lens being used. The average deviation from the ideal focus position is then stored as the zero reference for the system.

The collimators can be supplied with different reticle patterns for MTF applications (e.g. 10 µm crossline, negative) or SFR (e.g. chessboard pattern). 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 supplied with a corresponding calibration certificate indicating the positioning accuracy, reproducibility, repeatability and the achieved infinity setting of the objective.