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Products Visual Optical Instruments Collimators

Motorized Collimators

Type KM

Type KM

Product description

The motorized collimators of the KM product line were developed for the „Active Alignment“ of cameras for the automotive industry. The high-precision linear motion guide, modular design and simple command structure allow customers to integrate these OEM collimators into their custom measurement setups easily.

Overview

Motorized Collimators

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.

Reticle Patterns

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.

Notes of ordering

The nomenclature of the motorized collimators is shown on the left. When ordering, the measuring system, focal length and filter type must be specified. It should also be noted that the standard configuration includes a reticle with crosshairs with a line width of 10 µm. If a different reticle is required, please contact us in advance. In all cases, a converter for the desired collimator system must be ordered as well. Each collimator is supplied with a corresponding calibration certificate indicating the positioning accuracy, reproducibility, repeatability and the achieved infinity setting of the objective.

Type KM
Converter

Converter

One converter is required for each collimator system (consiting of 1 upto 98 collimators). The converter is supplied with a power supply and the connection cable (Ethernet/USB 2.0) to the PC/switch box.

Hardware and Software Integration

Hardware and Software Integration

The illumination unit and the complete control and evaluation electronics are located in the collimator. Up to 98 collimators can be addressed, connected in series and controlled via a converter. The control commands can be integrated into the respective customer software and transmitted to the connected converter at a baud rate of 115200 baud. In addition to the simple software implementation, the series connection enables uncomplicated cabling and the possibility of quickly replacing collimators in the event of maintenance. For the replacement collimator, only the addressing of the outgoing collimator has to be transferred to the newly exchanged collimator. The exchange can thus be carried out in the shortest possible time and without great effort. Each collimator is supplied with an RS-485 connection cable.

Dimensions

Dimensions

The dimensions are shown in the graphic and table on the left. The clamping range and clamping diameter is the same for all 24 variants. This means that the user can continue to use the existing mechanical mounts even after the collimators have been modified to a different focal length by MÖLLER-WEDEL OPTICAL GmbH.

The achievable positioning accuraccy (A), reproducibility (R1) and repeatability (R2) of the motorized collimators for unidirectional or bidirectional positioning depend on whether a length measurement system is used or not.
Variants

Variants