July 2014

A test for metrology

Aspheres and other freeform optics are becoming more commonly used in areas like consumer electronics - but, as these lenses move further away from rotational symmetry, can the metrology equipment to test them cope? Tom Eddershaw finds out

Something in the air

Jessica Rowbury looks at the various light-based techniques for monitoring atmospheric pollution

Print production for optics

A 3D printing process for optics could have implications for how optics are designed, manufactured and used, says Greg Blackman

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