WaveBench with new ELCOMAT® wave

WaveBench Cine Autocollimator

WaveBench Cine Autocollimator

Product description

The WaveBench is a modular system developed for the film cine-rental business, consisting of an optical bench with autocollimator and modular components for adaptation to the customer\'s measurement tasks. The new ELCOMAT® wave is used as the cine autocollimator. This is the digital successor to the well known Mark III-45S camera tester developed by Möller-Wedel, which has been used for decades in the rental and service sector.

WaveBench with Cine Autocollimator for Cine, Broadcast, Photo, Rental and Factory

The WaveBench covers the following measurement tasks, including documenting and storing the results in a database:

  • Adjusting the flange focal length distance of lenses / shimming
  • Focus marking / determination of the back focus distance
  • Zoom curves / checking the back focus distance during zooming
  • Zoom marking and EFL / checking zoom or focal length markers
  • Testing and tracing of image quality / wavefront errors
  • MTF Test with optional module
  • Star Test with dot image tester
  • Determination of the camera flage distance with the support module

Advantages and Benefits of the ELCOMAT® wave

By using the ELCOMAT®wave, the transformation from analogue to digital inspection and shimming of lenses is achieved. For the first time, the uniquely high precision and objective measurement method can be used to test the much higher demandes of todays high-tech lenses to create a precisely calculated look. The measurement setup is also suitable for reproducing a specific bokeh of old classics in a defined way. The carefully coordinated interaction of all WaveBench components and modules has created a system that offers significant value added not only for service and rental, but also for the production and manufacture of cine lenses.

Determination of Flange Focus Distance and Aberrations

With the ELCOMAT®wave, the focus position can now be determined with up to four apertures instead of two, as with the Mark III 45S camera tester. This extends the test spectrum from one-dimensional to multi-dimensional focus position determination. This means that astigmatism and coma of isotropic lenses as a result of misalignment and decentration can now be qualitatively recorded, documented and, if necessary, corrected using the four apertures. Furthermore, anamorphic lenses can be checked for astigmatism and coma - an important aspect in service and testing. With the LED illumination of the ELCOMAT®wave, chromatic aberrations in red, green, blue and white can also be analysed.

Checking the Finite Distance Markings

Due to the adjustable distance, the ELCOMAT®wave can be used to test at any focus setting from infinity to close up. The integrated measuring sensors eliminate the requirement for a separate distance measuring device and allow finite distances to be set with millimeter accuracy.

Collimator Lenses for Adaption to Focal Lenght and Aperture

Interchangeable lenses in cassettes allow direct adaptation of the auto-collimator to the focal length range and apertures of the lenses to be tested. Modules with focal lengths of 140 mm, 300 mm and 400 mm are available. These can be used to test a range of lens from approximately 14 mm to 200 mm focal length. A new option is a converter for the 140 mm module; that extends the test range down to about 4 mm. This makes WaveBench suitable for broadcast applications.

Cassettes for Adapting the Mounts

The mount system is also adaptable through interchangeable cassettes. Currently, modules are available for the mount types PL-, EF- and E-Mount. An universal cassette for standard camera adapters is available on request.The cassette system allows for easy expansion to include other mount types on demand.

Accessories for the Traceability and Referencing

The traceability of the back focus of the mount systems is ensured via associated reference lenses (zero lenses) and measuring blocks. Existing conventional measuring blocks with dial gauges could also be used, but wear out the reflector surface. Another option for traceability of the flange focal distance can be realised with special optical accessories (plane plate and attachment optics) using the digital scale on the mount slide.

Star Test Module

The WaveBench can be equipped with a point image generator and thus a star test analysis can be carried out. Based on the changed shape of the light spot caused by the lens under test, conclusions can also be drawn about the dominant aberrations.

MTF Test Module

Optionally the reference mirror could be replaced with a MTF test target. With the corresponding software module the MTF of the lens under test can be evaluated. The MTF curves could be stored and compared with data from the database. In addition to testing with the ELCOMAT®wave for focus, astigmatism and coma the MTF test will also be sensitive to higher order optical errors such as opening errors and stray light. This makes the MTF test the ideal tool for cine lens manufactures and services bureaus.