Patent ID: 11960084
Assignee: SAMSUNG ELECTRONICS CO., LTD.
Field: Optics (Instruments)
Classification: CPC G | IPC G

Claim 9:
10. An optical assembly comprising:
a first reflective mirror configured to reflect image light output from a display module;
a second reflective mirror configured to reflect the image light reflected from the first reflective mirror;
a refractive lens configured to allow the image light reflected from the second reflective mirror to pass therethrough; and
a reflective lens having a first surface and a second surface, each of the first surface and the second surface having an asymmetrical aspherical shape, and the reflective lens including a transflective coating laver provided on the first surface and configured to reflect the image light that passed through the refractive lens in a first direction and to transmit real light from a second direction facing the first direction,
satisfying a following inequality:

1.8<(M1EFY)/EFY<2.2,  <Inequality>

wherein M1EFY denotes a focal length of the first reflective mirror, and EFY denotes a focal length in Y-axis of the optical assembly.