High Precision Spherical Mirrors

High precision spherical mirrors produced by Optical Surfaces Ltd. are used in a huge variety of applications including Schlieren imaging, wind tunnels, observatory spectrographs, bubble chambers and to test hyperboloids (as Hindle spheres).

High Precision Spherical Mirrors

Benefiting from workshops and test facilities deep underground, where temperatures remain constant and vibration is practically non-existent, Optical Surfaces routinely produces high precision spherical mirrors in a wide range of materials and coatings. Typical achievable surface accuracy is better than lambda/30 p-v, surface quality 10:5 scratch dig and micro roughness less than 1.2nm RMS.

A typical example of these capabilities is a 1.3-metre diameter spectrograph spherical mirror supplied to the Royal Greenwich Observatory (UK) that was installed on the 2.5-metre Isaac Newton Telescope located at La Palma in the Canary Islands. This spectrograph contributed to obtaining the first observable evidence of the existence of black holes.

For further information on high precision spherical mirrors please visit www.optisurf.com/index.php/products/spherical-mirrors/ or contact Optical Surfaces Ltd. on +44-208-668-6126 / sales@optsurf.com.

Standard & Custom Design Off-Axis Paraboloids

In addition to supplying a range of standard specification Off-Axis Paraboloids (OAPs), Optical Surfaces Ltd. offers a consultative design and manufacture service to produce custom OAP’s to fulfil the most demanding and specialist applications.

off-axis-paraboloid-1Off-axis paraboloids, sometimes referred to off-axis parabolic mirrors or off-axis parabola, provide optical designers with an unobstructed aperture allowing complete access to the focal region as well as reducing the size and minimising the weight of a design. They are especially suitable for broadband or multiple wavelength applications due to their completely achromatic performance. All together these advantages produce a cost-effective solution for many optical design problems with no compromise in performance.

Production approved to ISO 9001-2008 the quality of OAPs from Optical Surfaces Ltd. is ensured using a range of interferometric and surface test measurements on all optics leaving the factory. The company offers a wide range of coatings to enable optimised OAP performance in applications including Beam Collimation / Expansion, FLIR testing, High power laser beam focusing, Astronomical spectrographs, Target projection, MTF referencing and MRTD testing.

Benefiting from a uniquely stable manufacturing environment, and over 50 years’ experience and expertise, Optical Surfaces OAPs are used by many leading research establishments and companies around the world.

For further information please visit www.optisurf.com/index.php/products/off-axis-paraboloids/ or contact Optical Surfaces Ltd. on +44-208-668-6126 / sales@optisurf.com

Technical information Brief: Off-Axis Parabolic Mirrors

Optical Surfaces Ltd has produced a technical information brief that serves to provide an introduction to the company’s broad range of capabilities in producing Off-Axis Paraboloids (OAPs).

In addition to supplying these standard specifications, Optical Surfaces technical team is at your disposal to discuss, propose and produce specialised custom OAP’s to fulfil the most demanding applications.

info-off-axis-paraboloidsOff-axis paraboloids, sometimes referred to off-axis parabolic mirrors or off-axis parabola, provide optical designers with an unobstructed aperture allowing complete access to the focal region as well as reducing the size and minimising the weight of a design. They are especially suitable for broadband or multiple wavelength applications due to their completely achromatic performance. All together these advantages produce a cost-effective solution for many optical design problems with no compromise in performance.

Production approved to ISO 9001-2008 the quality of OAPs from Optical Surfaces Ltd. is ensured using a range of interferometric and surface test measurements on all optics leaving the factory. The company offers a wide range of coatings to enable optimised OAP performance in applications including Beam Collimation / Expansion, FLIR testing, High power laser beam focusing, Astronomical spectrographs, Target projection, MTF referencing and MRTD testing.

Benefiting from a uniquely stable manufacturing environment, and over 50 years’ experience and expertise, Optical Surfaces OAPs are used by many leading research establishments and companies around the world.

For a copy of the OAP technical information brief please visit www.optisurf.com/index.php/products/off-axis-paraboloids/ or contact Optical Surfaces Ltd. on +44-208-668-6126 / sales@optisurf.com

Active Isolation Renders Reflective Collimators Truly Portable

prortable-reflective-collimatorsOptical Surfaces Ltd. has introduced a new option for its range of fully enclosed, pre-aligned reflective collimators.

For organisations looking for the flexibility of being able to use a reflective collimator on different experiments around their laboratory – Optical Surfaces has developed self-aligning isolating feet. 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”.

High stability and performance on Optical Surfaces reflective collimators 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 in our laboratories for optimum performance. The off-axis design of Optical Surfaces reflective collimators produces no central obscuration thereby ensuring highly efficient transmission is obtained.

The all-reflecting design of Optical Surfaces reflective collimators is achromatic and with aluminium / magnesium fluoride coatings can operate from the UV to the infrared without adjustment. Using zero expansion glass mirror substrates Optical Surfaces reflective collimators provide exceptional operational stability. 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. Test interferogram and analysis, showing wavefront accuracy, focal length and working distance, are supplied with every reflective collimator supplied.

For further information please visit www.optisurf.com/index.php/products/reflective-collimators/ or contact Optical Surfaces Ltd. on +44-208-668-6126 / sales@optisurf.com

Ensuring the Flatness of Mirrors

Optical Surfaces is a leading supplier of large, high precision reference flats and mirrors (coated flats) to research establishments, high power laser facilities and organisations worldwide.

mounts-montageFor high power laser applications – mirrors are typically produced by treating a flat substrate with several layers of ultra hard dielectric coating. Unfortunately these hard dielectric coatings cause a surface which is perfectly flat before coating to pull after coating and to induce that surface to become more convex. Whilst each type of coating behaves uniquely depending on coating design, type of material, aspect ratio of the blank and internal stresses, Optical Surfaces has developed expertise to mitigate the uncertainties associated with the coating to ensure flatness of mirrors, and hence the performance of the mirror.

Benefiting from a unique thermally stable manufacturing environment, and working with high-stability materials such as fused Quartz and Zerodur, Optical Surfaces is able to routinely achieve a surface accuracy of better than lambda/10 p.v. and surface roughness of less than 1nm on flats and mirrors (coated flats) up to 600mm in diameter. In addition to circular flats and mirrors (coated flats), Optical Surfaces is experienced in producing flats and mirrors in other shapes, light-weighted mirrors and supplying high precision mounts.

All flats and mirrors (coated flats) from Optical Surfaces Ltd. come with full quality testing assurance. For further information please visit www.optisurf.com/index.php/products/flats-and-windows/flats or contact Optical Surfaces on +44-208-668-6126 / sales@optisurf.com

Low Scatter Off-Axis Parabolic Mirrors

off-axis-paraboloid-2Designed to focus or collimate broadband light, off-axis parabolic mirrors from Optical Surfaces Ltd. are manufactured to the most demanding tolerances.

Unlike standard parabolic mirrors, off-axis parabolic (OAP) mirrors direct and focus incident collimated light at a specific angle, allowing unrestricted access to the focal point. Commonly these mirrors are used as collimators in Schlieren, MTF and FLIR systems, high power laser focusing, focusing upon astronomical objects, beam expansion and bore sight alignment for missile guidance systems.

Working with the highest quality optical glasses – Optical Surfaces Ltd. routinely produces OAP from 60mm to 600 mm in diameter. Benefiting from a uniquely stable manufacturing environment, and a highly skilled team of engineers and craftsmen, Optical Surfaces is able to manufacture OAPs with surface accuracy to lambda/20 (peak-to-valley) depending upon off-axis angles. Using proprietary polishing techniques Optical Surfaces can, depending on the surface accuracy required, achieve the natural limit to the off-axis angle of around 25-30 degrees and surface micro-roughness of less than 1 nm. A range of coatings is available from metallic with or without protective overcoat to multilayer dielectrics and ultra hard coatings to suit all applications.

off-axis-paraboloid-1Drawing upon over 50 years in this field, Optical Surfaces Ltd has established itself as one of the world’s leading suppliers of OAP’s for ground breaking applications by leading research institutes and organisations worldwide.

Optical Surfaces ISO 9001-2008 approved manufacturing facility provides the flexible resources to supply from single specialist requirements to OEM quantities. Benefiting from its uniquely stable manufacturing environment and highly experienced workforce – Optical Surfaces is able to routinely achieve the most demanding optical tolerances. All precision optics and optical systems are provided with a complete quality test assurance report.

For further information please visit www.optisurf.com or contact Optical Surfaces Ltd. on +44-208-668-6126 / sales@optsurf.com.

Ultra-high Precision Optics & Optical Systems

Laser World of Photonics - Optical SurfacesOptical Surfaces Ltd. has announced that it will be exhibiting examples of its ultra-high precision optics and optical systems at the forthcoming LASER World of PHOTONICS 2015 exhibition in Munich, Germany.

Visitors to Halle B3 Stand 103, the stand of German agent – Laser 2000 GmbH, will be able to meet and discuss with technical staff requirements for large diameter optics, beam expanders, collimators, parabolic mirrors and mirror mounts as well as prototypes and custom systems.

Over the last 50 years – Optical Surfaces Ltd has established itself as a leading international manufacturer of top quality, high precision optical components and systems. The company is a regular supplier to major projects worldwide and has particular knowledge and experience of supplying ultra-high precision optics for applications in fundamental physics, astronomy, space research, defence and environmental monitoring.

Optical Surfaces ISO 9001-2008 approved manufacturing facility provides the flexible resources to supply from single specialist requirements to OEM quantities. Benefiting from its uniquely stable manufacturing environment and highly experienced workforce – Optical Surfaces is able to routinely achieve the most demanding optical tolerances. All precision optics and optical systems are provided with a complete quality test assurance report.

For further information please visit www.optisurf.com or contact Optical Surfaces Ltd. on +44-208-668-6126 / sales@optsurf.com.

Light Weight Mirrors for Satellite & Astronomical Telescopes

light-weighted-mirror

Drawing upon special production techniques and the knowledge of its expert craftsman – Optical Surfaces Ltd. is able to produce light weight mirrors that combine top optical performance, high structural strength and significant component weight reduction.

To discover new celestial objects and to study known objects more accurately, ultra-high precision telescope mirrors that do not increase payload weights are increasingly required for telescope-based experiments conducted outside the Earth’s atmosphere. Light weight mirrors also allow the creation of larger terrestrial telescopic instruments than would be feasible with solid mirrors. Solid mirrors are not only mechanically cumbersome, but are also difficult to cast and safely cool into a single, large blocks of glass. Optical Surfaces light weighting techniques can reduce the weight of the mirror by as much as 60 per cent.

Optical Surfaces light weight mirrors provide sufficient rigidity for ultra-high precision optical performance while reducing the weight of the mirror. The reduced weight, in turn, allows smaller, lighter support and control structures, reducing the overall cost of the telescope.

Benefiting from a uniquely stable manufacturing environment – Optical Surfaces is routinely able to produces highly aspheric, fast focusing (to f 0.5) parabolic mirrors. With its team of skilled technicians and engineers, Optical Surfaces Ltd is also able to fabricate high performance aspheric lenses with tight tolerances. Excellent performance is assured through production of aspheric lenses with excellent surface quality – low surface scatter (20-10 scratch-dig) and high surface accuracy (lambda/20).

Optical Surfaces ISO 9001-2008 approved manufacturing facility provides the flexible resources to supply from single specialist requirements to OEM quantities. Benefiting from its stable environment, quality testing becomes quantifiable and reliable. All light weight mirrors are provided with a complete quality test assurance report.

Mirror Mounts for High Precision Optics

Ultra-high precision optics are useless unless they are positioned with absolute precision and stress-free. To fulfil this need, Optical Surfaces Ltd designs and manufactures mounts specifically for use with parabolic, spherical and flat mirrors to optimize the optical performance of optical systems.

Mounts and Mounted OpticsOptical Surfaces OS-Z Series mirror mounts were developed to support off-axis paraboloid, spherical and flat mirrors in a manner that allows overcoming a number of constrains imposed by general purpose mounts. Two key advantages gained by using an OS-Z mount together with an off-axis parabolic mirror are rapid alignment using an optional pre-alignment aid and the ability to routinely accommodate wedge back and parallel back mirrors. In addition, in applications where long term stability and stress-free mounting are important, the special factory fitted features allow this to be easily achieved.

Constructed in black anodized aluminium – Optical Surfaces OS Series Gimbal Mirror Mounts provide a secure and stable platform for mirror diameters from 100mm to 254mm. Angular alignment can be made about two axes by means of dual action adjusters with fine screw and ultra-fine differential micrometer action. Using these mounts it is possible to rapidly and accurately align a mirror. To facilitate rapid and simple mounting onto an optical table or other support each mirror mount comes with a base plate.

For larger mirrors in applications where stability of pointing is important, the robust OS 260-600 mounts are available in four standard sizes giving optical apertures from 260 mm to 550 mm. To ensure operational versatility and flexibility all mirror mounts provide precise micrometer screw tilt adjustment about both vertical and horizontal axes. Various motorised mount options are also available to suit applications in hostile environments or where limited space makes manual adjustment difficult.

Over the last 50 years – Optical Surfaces Ltd has established itself as a leading international manufacturer of top quality, high precision optical components and systems for organisations involved with fundamental physics, astronomy, space, defence and the environment.

For further information please visit www.optisurf.com or contact Optical Surfaces Ltd. on +44-208-668-6126 / sales@optisurf.com.

Optical Surfaces & Laser 2000 Sign Precision Optics Agreement

Optical Surfaces Ltd. (Kenley, UK) has signed an exclusive distribution agreement with Laser 2000 GmbH (Wessling, Germany) to help expand sales and local support for its high precision optical components, mounted optical components and systems.

The scope of the agreement covers both standard and customer specified optics in German speaking (Germany, Austria, Switzerland) and Scandinavian markets (Norway, Sweden, Finland, Denmark).

optspr154-imageDr Aris Kouris, Sales Manager of Optical Surfaces Ltd. commented “In the last few years we have achieved significant international growth in end user as well as OEM optical component and system sales. As a result we are actively expanding our highly skilled workforce here at our Kenley, UK headquarters as well as seeking knowledgeable partners in key territories around the world to provide better support to local customers and of course to grow sales”.

He added “Having worked informally with Laser 2000 over a number of years in Germany we have been impressed by their knowledge of optics, optical applications and commitment to supporting customers. As a result we are looking forward to working closely with the Laser 2000 team across a wider geographic region”.

Bernhard Dauner, Sales Manager of Laser 2000 GmbH commented “Laser 2000 is very proud to announce this official partnership with Optical Surfaces Ltd. For many years we have experienced excellent support from Optical Surfaces enabling us to satisfy our customer requests with high quality optical components and systems. Working together more closely, and in a wider region of Europe, perfectly reflects our European growth strategy”.

For further information please contact Optical Surfaces Ltd. on +44-208-668-6126 / sales@optisurf.com.

Founded in 1986, Laser 2000 (http://www.laser2000.de/) is an international leader in the distribution of photonics products that enable customers to generate light, modify it, move it, and measure it. The company leads the way in innovation by supplying state-of-the-art solutions, utilising the latest photonics and optoelectronic technologies. Working in partnership with customers, Laser 2000 seek to provide customised solutions for even the most demanding applications and pride ourselves on our unfailing expertise, product quality and reliability. All Laser 2000 supplied products meet rigorous standards of quality and specification, at competitive prices. Laser 2000 maintains local offices in many territories in Europe, such as Germany, Austria and Scandinavia.

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