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Optical Accessories & Components

Attachment Achromats & Reference Optics

Product description

Möller-Wedel Optical GmbH offers attachment achromats with different focal lengths for autocollimators/testing telescopes/collimators as well as for the measuring combination MELOS 530 and the centering testing instrument CIFOS. For interferometers, different types of Fizeau objectives and plane plates are offered. Test wedges are excellent for quickly checking the accuracy of autocollimators and collimator/telescope combinations such as the SIAM.

Typical Set of Attachment Achromats

This typical set is useful for e.g. the determination of negative effective focal lengths and convex or concave radii in combination with a MELOS 530 or for the centering of optical systems with the CIFOS measuring instrument.

Transmission Flat D30

Note: The transmission flat has been specially developed for the interferometer and any other use is not recommended.

Transmission Flat D50

Note: The transmission flats have been specially developed for the interferometer and any other use is not recommended.

Transmission Flat D100 & D150

Note: The transmission flats have been specially developed for the interferometer and any other use is not recommended.

Choice of Transmission Sphere

So-called Fizeau objectives (reference optics) are used for testing spherical surfaces. They generate a reference wave against which spherical specimens can be interferometrically tested. The Fizeau objectives are available with different radii (R(Fizeau)) and usable diameters (D(Fizeau)). In order to measure the total spherical area to be tested, the following condition must be met: R/D(Fizeau) ≤ R/D(test area). The technical data and the corresponding graph will help you to select the optimum Fizeau objective for your inspection task.

Transmission Sphere M60 x 1.0

Note: The transmission spheres are specially developed for the interferometer and any other use is not recommended.

Technical data M60x1.0

Transmission Sphere System

The transmission sphere system for the VI-direct 100 interferometer consists of an optical connector, which already contains parts of the lens system, and a transmission sphere system. The transmission sphere objective can thus be reduced to a minimum number of optical elements. The combination of connector and transmission sphere objective allows the test diameter to be enlarged. This results in a larger measuring range compared to standard 4 objectives. In addition, a D130 plano lens is available, which in combination with the optical connector, similar to a flaring lens, increases the test diameter of the VI-direct 100 interferometer to 130 mm by 30%.

Available Transmission Spheres

*Note: Additionally, an optical connector is needed! The transmission spheres are specially developed for the interferometer and any other use is not recommended.

Technical Data Transmission Sphere System

Transmission Sphere with Bayonet

Note: The reference objectives have been developed especially for the interferometers, any other use is not recommended. Remaining stock-please inquire!

Adapter M36 x 0.75

The Interferometer VI direct 10, 16 and 28 can also be equipped with transmission spheres from other manufacturers. For this purpose, the adpater shown on the right is required.

Note: Other adapters can also be offered on request.

Adapter M60 x 1.0

The VI direct 50 interferometer can be equipped with reference objectives from other manufacturers. For this purpose, the adapter shown on the left is required.

Note: Other adapters can also be offered on request.

Autocollimator-Test-Wedge

The certified autocollimator test wedge can be used as a reference or for quick on-site check of measurement accuracy of electronic autocollimators.

Test-Wedge, 8 Arcmin, D80

The certified test-wedge can be used to check the measuring accuracy of the secondary image angle measuring instrument (SIAM) for testing vehicle windscreens.

Angle Measurement Standard

Each GONIOMAT M and GONIOMAT A is supplied with an angle measurement standard for on-site inspection and calibration.