Patent ID: 11947124
Assignee: SEIKO EPSON CORPORATION
Field: Optics (Instruments)
Classification: CPC G | IPC G

Claim 10:
11. A method of adjusting an optical system of a display device, the optical system including:
an image light generation device configured to generate image light;
a projection optical system including an optical element, the optical element being a single lens and including an optical surface asymmetric in a direction along at least a first axis of two axes orthogonal to each other and perpendicular to an optical axis of the image light;
a support member configured to support the optical element;
a first adjustment mechanism being in contact with the optical element and an inner surface of the support member; and
a second adjustment mechanism disposed outside the support member, the method comprising:
a first adjusting step of adjusting a position of the optical element in the direction along the first axis through the first adjustment mechanism; and
a second adjusting step of adjusting, after the first adjusting step, a position of an emission region of the image light in the direction along the first axis through the second adjustment mechanism.