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

Claim 8:
9. The image display device according to claim 5,
wherein a first λ/4 plate, a reflective circular polarizer, a half mirror, and a second λ/4 plate are provided between the polarizer A and the polarizer B in order from a side of the polarizer A,
an angle between the direction of the absorption axis of the polarizer A at the position X and a direction of a slow axis of the first λ/4 plate at an intersection of the straight line L and the first λ/4 plate is 45±10° in a case of being observed in the direction in which the straight line L extends,
an angle between the 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 slow axis of the first λ/4 plate at an intersection of the virtual line L1 and the first λ/4 plate is 45±10° in a case of being observed in the direction in which the virtual line L1 extends,
an angle between the 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 slow axis of the first λ/4 plate at an intersection of the virtual line L2 and the first λ/4 plate is 45±10° in a case of being observed in the direction in which the virtual line L2 extends,
an angle between the 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 slow axis of the first λ/4 plate at an intersection of the virtual line L3 and the first λ/4 plate is 45±10° in a case of being observed in the direction in which the virtual line L3 extends, and
an angle between the 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 slow axis of the first λ/4 plate at an intersection of the virtual line L4 and the first λ/4 plate is 45±10° in a case of being observed in the direction in which the virtual line L4 extends.