Patent ID: 6380537
Filing Date: 2002-04-30
Classification: H05K

Abstract:
A holding head, comprising:a support portion; a suction nozzle which applies a negative pressure to a back surface of an object and thereby holds the object, the suction nozzle being detachably attached to the support portion; and a back-surface lighting device which lights the back surface of the object held by the suction nozzle and which includes a main portion which is separate from the suction nozzle and is supported by the support portion such that when the suction nozzle is detached from the support portion, the main portion remains supported by the support portion, wherein the main portion of the back-surface lighting device comprises a tubular lighting portion which emits, from an inner surface thereof, a first light; and an outer lighting portion which extends outward from the tubular lighting portion and which emits, from one surface thereof, a second light in a direction parallel to a centerline of the tubular lighting portion, and wherein the suction nozzle comprises a light converting portion which is fitable in an inner space of the tubular lighting portion and which converts the first light emitted by the tubular lighting portion into a third light having said direction parallel to the centerline of the tubular lighting portion; and a suction pipe which holds the object and which extends from one end of the light converting portion in said direction parallel to the centerline of the tubular lighting portion, one end portion of the suction nozzle that is opposite to the suction pipe being detachably attached to the support portion.