Abstract: Disclosed are a wire harness continuity inspection method and a wire harness continuity inspection program capable of shortening the time required for a success/failure determination step. A first specification regarded as necessary for a first partitioned area A and a second specification regarded as necessary for a second partitioned area B are compared, the presence/absence of a shared specification is determined, and when there is at least one shared specification, region-based connector/wiring information described regarding any first wire harness arrangeable in the first partitioned area A and any second wire harness arrangeable in the second partitioned area B is created for the combination of the first wire harness and the second wire harness only.

Abstract: Provided is a Fresnel lens the manufacture of that is unlikely to be affected by the working errors of the die in the optical axis and its neighborhood. Two lens surfaces 11, 11 that are disposed in the vicinity of the optical axis are disposed in the way they are shifted from each other in a direction along the optical axis, whereby the height Ha in this direction of the optical axis of a non-lens surface 12 located at the boundary between the two lens surfaces 11, 11 is made greater than an original height Ha of the non-lens surface 12 in a case where it is assumed that the lower ends 11a, 11a of each of these lens surfaces 11, 11 has been placed on the same flat plane intersecting the optical axis OA at a right angle with respect thereto. Also, the lens angle ?a of at least one piece of lens surface 21 that is disposed in the vicinity of the optical axis is set to be greater than the original lens angle that should be given according to the focus calculation with respect to the lens angle 21.

Abstract: Provided is a Fresnel lens the manufacture of that is unlikely to be affected by the working errors of the die in the optical axis and its neighborhood. Two lens surfaces 11, 11 that are disposed in the vicinity of the optical axis are disposed in the way they are shifted from each other in a direction along the optical axis, whereby the height Ha in this direction of the optical axis of a non-lens surface 12 located at the boundary between the two lens surfaces 11, 11 is made greater than an original height Ha of the non-lens surface 12 in a case where it is assumed that the lower ends 11a, 11a of each of these lens surfaces 11, 11 has been placed on the same flat plane intersecting the optical axis OA at a right angle with respect thereto. Also, the lens angle &thgr;a of at least one piece of lens surface 21 that is disposed in the vicinity of the optical axis is set to be greater than the original lens angle that should be given according to the focus calculation with respect to the lens angle 21.