Patent ID: 11947221
Assignee: FUJIFILM CORPORATION
Field: Optics (Instruments)
Classification: CPC G | IPC G

Claim 3:
4. The phase difference compensation element according to claim 2,
wherein the phase difference film includes a plurality of the oblique vapor deposition layers, and
in a case where an orientation of the slow axis is defined as ηs, a phase difference value Re(15)ηs in the orientation ηs with respect to light having a wavelength of 550 nm, which is incident on the surface of the oblique vapor deposition layer at a polar angle of 15°, is defined as α, a phase difference value Re(15)(ηs+180) in an orientation ηs+180° with respect to the light incident on the surface of the oblique vapor deposition layer at the polar angle of 15° is defined as β, and A=α−β, each of a phase difference value Re(15)(ηs+60) in an orientation is +60° with respect to the light incident on the surface of the oblique vapor deposition layer at the polar angle of 15° and a phase difference value Re(15)(ηs−60) in an orientation ηs−60° with respect to the light incident on the surface of the oblique vapor deposition layer at the polar angle of 15° is within a range of (A/2−β)±5 nm.