Off-Axis Paraboloids Enhance Laser Power Density

Enhance Laser Power DensityOff-axis parabolic mirrors can be a useful tool in optical design. OAPs combine the achromatic and diffraction limited imaging properties of a parabolic mirror with the ability to deviate the light path off-axis, which is useful for most imaging systems. OAP’s offer the ability to focus collimated light without introducing spherical aberration. Continue…

Optical Surfaces Limited are a UK based company supplying the world with optical components and instruments. We specialise in large optics, beam expanders, collimators and prototypes, plus custom systems and optics.

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. We have contributed to many major projects worldwide involved in areas such as:
• fundamental physics   • astronomy   • space   • defence and the environment

Off-axis Paraboloids
On-axis Paraboloids
Aspheric Lenses
Spherical Mirrors
Filters and Fibres
Reflective Collimators
Laser Beam Expanders
Mounts/Mounted Optics
Custom Systems & Optics
Latest News
The SPIRou / SPIP spectrograph contained within a large cryogenic dewar (courtesy:Midi-Pyrénées Observatory)

Spectrograph to Record Near-IR Spectrum of Stars in a Single Exposure

Optical Surfaces Ltd reports delivery to the Research Institute in Astrophysics and Planetology (IRAP) of high precision disperser prisms and folding mirror components that lie at the heart of the ground breaking SPIRou / SPIP near infrared spectrograph. The SPIRou / SPIP spectrograph is designed to be able to record the whole near infrared spectrum of a star (over the wavelength range 0.98-2.35 µm and in either circular or linear polarization) ...

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Large diameter, high precision optical window

Optical Windows for Wind Tunnel Aerodynamic Testing

Optical Surfaces Ltd is a producer of large diameter, high precision windows for wind tunnel aerodynamic testing. Aerodynamicists and engineers use wind tunnels to test models of proposed aircraft and engine components. During a test, the model is placed in the test section of the tunnel and air is made to flow past the model. Schlieren imaging is a valuable technique to provide diagnostic information about the 'invisible' flow of air ...

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Parabolic Mirrors for Optical Instruments

Parabolic Mirrors for Optical Instruments

Optical Surfaces Ltd is a leading manufacturer of Off-Axis Parabolic Mirrors for optical instruments including radiometers, MTF measuring systems and spectrometers. Off-axis parabolic (OAP) mirrors are the most common type of aspherical mirrors used in optical instruments because they are free from spherical aberrations, and can focus a parallel beam to a point or point source to infinity. Employing off-axis parabolic mirrors in an instrument design allows optical engineers to not only ...

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Distribution of microroughness measurements on OAPs produced using pitch-polishing technique

Highly Smooth Off Axis Parabolic Mirrors Offer Near 100% Reflectance

Optical Surfaces Ltd. reports that its off-axis parabolic mirrors are particularly suitable for coating using an Ion Beam Sputtering (IBS) technique that provides near 100% reflectivity thereby providing unmatched protection from thermal damage that often arises from high power continuous wave lasers. Dr Aris Kouris, Sales Director of Optical Surfaces Ltd. explained "Surface microroughness of parabolic mirrors is an important optical quality parameter which describes features which are typically smaller than ...

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