1924- . US painter, associated with Abstract Expressionism. In the 1950s and early 1960s he painted targets, or concentric circles of colour, in a clean, hard-edged style on unprimed canvas. His work centred on geometry, colour, and symmetry. His later 1960s paintings experimented with the manipulation of colour vision and afterimages, pioneering the field of op art. Noland was born in Asheville, North Carolina. In Graded Exposure 1967, he used large stripes to form a plaid.