Coarse-grained diamond wheels can realize high efficient grinding of optical glass. However, the subsurface damage will be inevitably introduced by the coarse-grained wheels. Based on laser machining method, this paper presents a structured coarsegrained diamond wheel for optical glass grinding. Continuous micro grooves with 10-15μm width were machined on the peripheral surface of grinding wheel by UV nanosecond pulsed laser. The protruding part of most diamond grains were cut-through by grooves. Damage of diamond grains or their falling out was not found during laser structuring. The results of optical glass grinding tests show than the subsurface damage depth could be reduced effectual when using the structured coarse-grained diamond wheels, better surface quality was not however obtained.
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