ACCESSORIES & COMPONENTS

Modular Components

 

The free interchangeability of the components allows many combination possibilities and ensures economical solutions. So one can combine modules (e.g. objective tubes, eyepieces etc.), to make a telescope, a collimator or even an autocollimator.

 

Setting up different combinations is very easy since the basic components are fully compatible with each other

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Depending on the application, the user first chooses a reticle sleeve with an eyepiece, a reticle sleeve with illuminator, or an autocollimation eyepiece to build a telescope, a collimator, or an autocollimator, respectively. They can then attach an objective tube which is available in a range of focal lengths and free aperture sizes. The user chooses one reticle to be installed for telescopes or collimators, two reticles must be chosen for autocollimators. Eyepieces are available in a range of magnifications and fully exchangeable. Extension to other measurement tasks could not be simpler by exchanging one of the parts just described. All modular components are available separately and the user is free to set up the components as they wish

Click on a section button below to learn more.

MODULAR COMPONENTS

Objective Tubes

Objective tubes are the core components of all testing telescopescollimators and autocollimators. The cylindrical tube is hard chromed for high wear-resistance. All objective tubes of a standard design are fitted with two-element objectives (achromats). By interchanging the objective tube (alteration of the focal length) the measuring range and the accuracy is altered.

Objective tubes are available either with fixed distance settings or with variable focus adjustment. The variable focus adjustment is realized by tube extension. Focusable objective tubes are used where discrete distances have to be focused or if the collimators, telescopes or autocollimators should be used at other wavelengths.

 

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Objective Tubes with Fixed Focus Settings
 

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To open PDF of Objective Tube Fixed Focus specifications & drawing, click on PDF icon on left.

To magnify spec drawing above click on image.

Objective Tubes with Adjustable Focus Settings
 

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To open PDF of Objective Tube Adjustable Focus specifications & drawing, click on PDF icon on left.

To magnify spec drawing above click on image.

 

MODULAR COMPONENTS

Reticle Sleeves


Reticle sleeves are available with eyepiece or illumination:
 

Reticle adapter sleeve with reticle and eyepiece forms with an objective tube a testing telescope.
 

Reticle adapter sleeve with illumination forms with an objective tube a collimator

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Reticle Sleeves with Eyepiece
 

Notes on ordering:


Please specify reticle and eyepiece. Instead of eyepiece with f=14.7 mm eyepieces with f=10 mm or 25 mm can be used.

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To open PDF of Reticle Sleeve w/ Eyepiece specifications & drawing, click on PDF icon on left.

To magnify spec drawing above click on image.

Reticle Sleeves with Illumination
 

Notes on ordering:


Please specify reticle and illumination when ordering.

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To open PDF of Reticle Sleeve w/ Illumination specifications & drawing, click on PDF icon on left.

To magnify spec drawing above click on image.

 

MODULAR COMPONENTS

Autocollimation Eyepieces


Selecting an autocollimation eyepiece with illumination and an eyepiece along with an objective tube allows you to create an autocollimator designed for your specific needs.

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AUTOCOLLIMATION EYEPIECES

Notes on ordering:

 

When considering placing an order please note the following:

As standard all autocollimation eyepieces are fitted with the bulb illumination 6V/5W and eyepiece f=14.7 mm.

Optionally, the autocollimation eyepiece can be equipped with an eyepiece  f=10 mm or 25 mm.

Please specify reticlesillumination and eyepiece when ordering.

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To open PDF of Autocollimation Eyepieces specifications & drawing, click on PDF icon above.

To magnify spec drawings on the left, click on image.

 

MODULAR COMPONENTS

Eyepieces


Although eyepieces with a focal length of f=14.7mm are typically used in most applications, Möller-Wedel Optical GmbH also offers two additional eyepieces with focal lengths of f=10mm and f=25mm to accommodate your specific applications.

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EYEPIECES

Selection Criteria

 

In contrast to the usually used eyepiece with f=14.7 mm an eyepiece with f=10 mm gives a larger magnification but lesser image field and eyepiece f=25 mm gives a smaller magnification but larger image field.

Note: After removing the eyepiece cover ring all eyepieces can be upgraded with a C-Mount-Adapter to connect a CCD-Camera to the eyepiece.

Click on the PDF icon on the right to open the Eyepiece specification sheet

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Comparison Between CCD Chip Size and Eyepiece Focal Length

When using a C-mount adapter in combination with one of our eyepieces, the resulting magnification has an effect on the image field on a CCD chip. For example, a combination with an eyepiece with a focal length of 10 mm produces a strongly magnified image of the eyepiece reticle, so that with a 4.8x6.4 mm "½" chip only 30% of the height and 40% of the width of the reticle structure are imaged on the chip. If almost the entire reticle structure is to be imaged, the eyepiece with a focal length of 25 mm must be selected. Then 75% of the height and 100% of the width of the reticle image are displayed on the same chip size. Therefore, the eyepiece should always be selected to match the selected application. Similar effects occur when interacting with the human eye. However, these depend strongly on the user and cannot be specified exactly.

Below you will find illustrative examples of the image field used for different CCD chip sizes and corresponding eyepieces.

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Eyepiece f=10mm

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Eyepiece f=14.7mm

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Eyepiece f=25mm

 

EYEPIECES

Eyepiece f=25mm

 

  • Larger image field
     

  • Mount of a C-mount-adapter
     

  • Magnification: 10x

Art. No.      Description

217 025      Eyepiece f=25 M27x0.5

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EYEPIECES

Eyepiece f=10mm

 

  • Magnified observation of the reticle image at reduced image field
     

  • Mount of a C-mount-adapter
     

  • Magnification: 25x

Art. No.      Description

217 010     Eyepiece f=10 M27x0.5

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EYEPIECES

Eyepiece f=14.7mm

 

  • Standard measuring tasks
     

  • Mount of a C-mount-adapter
     

  • Magnification: 17x

Art. No.      Description

217 015       Eyepiece f=14.7 M27x0.5