Patent ID: 11914140
Assignee: FUJIFILM CORPORATION
Field: Optics (Instruments)
Classification: CPC G  B  H | IPC B  G

Claim 0:
1. An optical element comprising:
an absorbing polarizer A having a curved surface portion; and
an absorbing polarizer B,
wherein in a case where a position of a surface of the polarizer A on a side of the polarizer B, closest to the side of the polarizer B, is defined as a position X, a position of a surface of the polarizer B on a side of the polarizer A, closest to the position X is defined as a position Y, and a straight line L passing through the position X and the position Y is drawn, a position Z satisfying the following requirement is present on the straight line L and at a position beyond the position X in a case where the position X is observed from the position Y, the requirement; a virtual line L1, a virtual line L2, a virtual line L3, and a virtual line L4, which pass through the position Z and form an angle of 30° with the straight line L, are present,
an angle between a straight line Lp1 in which the virtual line L1 is orthographically projected onto the polarizer B and a straight line Lp2 in which the virtual line L2 is orthographically projected onto the polarizer B is 90°, an angle between the straight line Lp2 and a straight line Lp3 in which the virtual line L3 is orthographically projected onto the polarizer B is 90°, an angle between the straight line Lp3 and a straight line Lp4 in which the virtual line L4 is orthographically projected onto the polarizer B is 90°, and an angle between the straight line Lp4 and the straight line Lp1 is 90°,
an angle between the straight line Lp1 and an absorption axis of the polarizer B is 45°,
an angle between a direction of an absorption axis of the polarizer A at the position X and a direction of the absorption axis of the polarizer B at the position Y is 90° in a case of being observed in a direction in which the straight line L extends,
an angle between a direction of the absorption axis of the polarizer A at an intersection of the virtual line L1 and the polarizer A and a direction of the absorption axis of the polarizer B at an intersection of the virtual line L1 and the polarizer B is 90° in a case of being observed in a direction in which the virtual line L1 extends,
an angle between a direction of the absorption axis of the polarizer A at an intersection of the virtual line L2 and the polarizer A and a direction of the absorption axis of the polarizer B at an intersection of the virtual line L2 and the polarizer B is 90° in a case of being observed in a direction in which the virtual line L2 extends,
an angle between a direction of the absorption axis of the polarizer A at an intersection of the virtual line L3 and the polarizer A and a direction of the absorption axis of the polarizer B at an intersection of the virtual line L3 and the polarizer B is 90° in a case of being observed in a direction in which the virtual line L3 extends, and
an angle between a direction of the absorption axis of the polarizer A at an intersection of the virtual line L4 and the polarizer A and a direction of the absorption axis of the polarizer B at an intersection of the virtual line L4 and the polarizer B is 90° in a case of being observed in a direction in which the virtual line L4 extends.