Abstract
Conventional method of laser interferometry is useful to know how a tooth flank has form deviation. But its method has a defect that it takes much time to process data of brightness intensity on CCD image sensor and the method can't be introduced in production line for the sake of optical instability of the measuring system. Therefore to detect a form deviation of a cylindrical involute gear tooth, a new measuring system is introduced. Possibility of rapid detection method of a tooth form by using laser holography is investigated.
