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Reflective collimators

Optical Surfaces has developed self-aligning isolating feet as a new option for its range of fully enclosed, pre-aligned reflective collimators. Aimed at organisations that need the flexibility of being able to use a reflective collimator on different experiments around their laboratory, the isolating feet allow a ±10mm height adjustment and enable easy relocation of the reflective collimator without any loss of performance. 

The isolating feet clamp onto standard optical tables and operate in two modes. When the unit is static the isolating feet are set in ‘no floating mode’. However, to ensure smooth and safe transfer from one place to another the isolating feet may be set in ‘floating mode’.

Stability and performance is achieved using a zero expansion off-axis parabola, manufactured to better than lambda/10 p-v surface accuracy. The optics within each unit are secured by the use of stress-free mounts and come pre-aligned for optimum performance. The off-axis design produces no central obscuration, ensuring highly efficient transmission.

The all-reflecting design is achromatic, and with aluminium/magnesium fluoride coatings can operate from the UV to the infrared without adjustment. Each unit has an output port datum plane giving a defined distance to the focus. All reflective collimators provide a 20mm field ensuring full compatibility with standard black bodies.

Standard models include exit apertures of 100mm, 120mm, 150mm, 200mm, 240mm and 300mm. Customised systems can be supplied with larger field sizes, different output interfaces and platforms. Other options include reticle holders, lamp houses and black bodies. Furthermore, test interferogram and analysis, showing wavefront accuracy, focal length and working distance, are supplied with every supplied reflective collimator.


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