Adaptive optics (AO) are able to provide real-time compensation of optical distortions. These optical distortions (wavefront errors) lead to a lowering of the efficiency of an optical system.

An AO system may consist of a wavefront sensor to detect the optical distortion and a wavefront modulator to compensate for this. Through the use of a feedback loop the optical distortion can actively be removed in real-time.

Examples of wavefront modulators include deformable mirrors and liquid crystal phase modulators.

The lack of a traceability chain for AO technologies is acting as a barrier to wider implementation in applications ranging from laser eye surgery in GP surgeries, to micro-machining in the medical and microfluidic environments and to rapid prototyping systems.

Metrology for AO systems and components is an essential step to help reduce the cost and operating complexities of AO solutions.

Current Research

Programmable aberration generator

An adaptive optic element is used to produce controlled aberrations that are traceable to dimensional measurements.

Adaptive optic eye simulator

Allows an assessment of the spot size on the retina from optical sources to be made. This is required to remove subjectivity and uncertainty from clinical studies. Spot size on the human retina can only be modelled at present but its measurement is a requirement of regulatory organisations.

The system is also used to look at the effects of speckle in laser projection systems.

Consultancy Services

Tailor made consultancy can assist your company in developing adaptive optics systems to meet your requirements, or trouble shoot existing systems.

Collaborative Research

NPL are always developing new measurement techniques to improve our services. We are looking for partners in collaborative research projects and we are happy to discuss any ideas you may have.

For further information, please contact: Simon Hall