OPTOMATIC Fully Automatic Optical Bench

DESCRIPTION MEASUREMENT PRINCIPLE Effective Focal Length A highly corrected collimator projects the image of a special target to infinity. The parallel ray bundles enter the lens under test parallel to the optical axis and emerge from the lens as a convergent beam intersecting in the focal plane. The target image formed in the focal plane of the lens under test is collected by a microscope assembly and focussed on the high resolution CCD array accurately located in the focal plane of the microscope. The microscope assembly with the CCD array is mounted on a motorised linear stage driven by a...

Flange Focal Length The Flange Focal Length (FFL) or the Flange Focal Distance (FFD) is the distance between the locating surface of the lens mount and the image plane. This parameter is especially important for the photographic lenses as distance between the locating surface of the lens mount and the film (image) plane. The self-centering sample holder of the OPTOMATIC has three stable pins with a diameter step providing a precise mechanical stop for the lens mounts. The pins are made of hardened and grinded steel to ensure the necessary stability. The locating surface of the lens mount must...

lens is positioned in a precision self-centering holder featuring four indexing stops at 90°and rotation over 360°. During the holder rotation, measurement data are taken in any of the indexing stop positions. A special alghoritm allows for automatic calculation and display of the centering errors. The result of the measurement can be given as radius of the run out circle (in ìm) with an accuracy of +/-0.5ìm or as tilt of the surface or of the lens axis (in arcsec). MTF-Measurement The set up for MTF measurement includes the standard optical head equiped with a high resolution relay lens. A narrow...

However, due to the measuring principle the accuracy is limited. This procedure is very cost effective and recommended for production quantities when relative measurements in comparison with a master are acceptable. The slit evaluation requires a special slit target to be mounted in the collimator. The MTF calculated from the slit evaluation is more accurate, however, it requires expensive hardware. The OPTOMATIC system includes a special illumination unit with an electronic shutter. The electronic shutter is software controlled and opens alternatively the double slit for EFL measurement or the...

• selection of rapid or accurate measurement routines offers highest operation flexibility • to increase the efficiency in production process, the software has capabilities to save the optimized process parameter for future use. • for production use the main functions can be transferred to a dedicated keyboard so that even unskilled operators can provide reliable measurement results. Since all the software modules used for measurement of different optical parameters are integrated into a main software program, the time necessary to change to another application is minimal. The measurement certificate...

INSTRUMENT SELECTION The OPTOMATIC equipment line includes: • OPTOMATIC - a versatile, horizontally set up instrument which is recommended when a large variety of samples should be tested and when flexibility and quickly changing measurement tasks are required. OPTOMATIC is also the prefered instrument for measurement of longer focal length. However, due to the horizontal set-up the OPTOMATIC is less suited for centration measurement. SOFTWARE 7 Measuring diopter power and MTF of IOL

• OPTOMATIC 2000 - is vertically set up and specially designed for measurement of lenses of large diameter (up to 200 mm). Due to the large aperture collimator with longer focal length OPTOMATIC 2000 is also the right choice for MTF measurement. All the basic models can be supplied in standard or customized versions to fulfill special requirements. • OPTOMATIC MICRO - is vertically set-up and dedicated to the measurement of small lenses and shorter focal lengths. OPTOMATIC MICRO is recommended for testing of mass production quantities of IOL’s or endoscopes lenses and for applications where centration...

ORDERING INFORMATION 9 resolution CCD array, precision microscope objective or highly corrected achromats in order to accomodate to different samples and different optical parameters. Moreover the software automatically adapts to different requirements when measuring under extreme conditions as too small or very long focal lengths, uncorrected lenses (poor image quality), poor contrast, etc. ORDERING INFORMATION TECHNICAL SPECIFICATION Considerations about accuracy OPTOMATIC has been designed to cover a large measuring range and in this way to become a universal measuring tool. To enable this...

TECHNICAL SPECIFICATION 10 The software also increases more than 20 times the resolution of the CCD, so that the measurement of the target image is made with a resolution smaller than 1ìm. The unavoidable inaccuracies of the system components are eliminated through individual calibration using high precision master lens certified by different national standard institutes. This sofisticated and costly calibration procedure assures the highest absolute accuracy of each instrument. The calibration values are stored in a special file and automatically used to correct the raw measurement data. The...

TECHNICAL SPECIFICATION 11 +5…+450 mm - 5…- 450 mm +5...+150 mm - 5...- 150 mm +5...+500 mm - 5...- 500 mm Centering Errors in Transmission and Reflection Measurement Range (Extension on request) Repeatability Accuracy Measurement Time ±0,5 ìm or ±2 arcsec ±1 ìm or ±5 arcsec 5-15 Sec Angle and power of wedges and plan-paralell plates Measurement Range Accuracy Power (optical effect) Measurement Time approx. 1° ±1 arcsec ± 0.002 dpt 1 sec 5...150 mm (EFL) 5-500 mm (EFL) 1...75 mm (EFL) 5-250 mm (EFL) 5...75 mm (EFL) 5-500 mm (EFL) MTF-Measurement on-axis in tangential plane Measurement Range •...