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Projection lens manufacturing apparatus, projection lens manufacturing method, projection lens manufactured by the projection lens manufacturing method and projector having the projection lens
Projection lens manufacturing apparatus, projection lens manufacturing method, projection lens manufactured by the projection lens manufacturing method and projector having the projection lens
A projection lens (46) has a lens barrel (100) in which group lenses (110) are sequentially disposed and an optical path is set, the lens barrel (100) having position-adjusting holes (122A) on a position orthogonal to an optical axis of a third group lens (113) and being orthogonal with each other. The projection lens manufacturing apparatus has a projection lens holding mechanism (550) for holding the projection lens (46) at the lens-adjusting position; an image light irradiating mechanism (526) which introduces the test pattern image in accordance with a light beam irradiated by a light source (521) onto the projection lens (46); a lens position adjuster (570) which adjusts the position of the third group lens (113) along X-axis and Y-axis while detecting the image light irradiated through the projection lens (46); and a bonding mechanism (580) for bonding the adjusted third group lens (113).
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