US 12,393,003 B2Granted

Optical apparatus

AssigneeColorLink Japan, Ltd.

InventorsMiho Nishiyama, Yuta Watanabe

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Abstract

An optical apparatus includes a display that displays an image, and an optical system that includes a filter (a reflective polarizing plate) and a lens (a half mirror surface) arranged on a downstream side and an upstream side, respectively, on an optical axis L of a display and magnifies the image by at least the lens (half mirror surface). The optical apparatus drives the lens along the optical axis L with respect to the filter by a mobile device, or changes the surface shape or the lens power of the lens having a variable surface shape or variable lens power. Thus, the optical path is folded back twice between the filter and the lens of the optical system, and the image is magnified by the lens (the half mirror surface), so that the position of the magnified virtual image can be adjusted according to the diopter of the user.

Claims20

Dependent claims

An optical apparatus that generates a magnified virtual image of an image, the optical apparatus comprising:

a display configured to output an image light for forming an image;
an optical system configured to magnify the image, the optical system including:
a first transmissive/reflective surface and a second transmissive/reflective surface that are arranged on an eye point side and a display side, respectively, on an optical axis of the display;
and a lens element in which the second transmissive/reflective surface is provided on one surface on the display side, wherein the first transmissive/reflective surface transmits or reflects at least a part of the image light, and the second transmissive/reflective surface is an aspherical curved surface in which a change amount of a curved surface angle continuously increases or decreases according to a distance from a center, and transmits or reflects at least a part of the image light;
and
a mobile device configured to relatively move at least the second transmissive/reflective surface along the optical axis with respect to the first transmissive/reflective surface.

3 more elements

Dependencies are inferred from the claim text.

Facts

Application: 17/747,996Filed 18 May 2022 · continuation
Priority: 25 Nov 2019
Published: US 2022/0350121 A13 Nov 2022
Granted: 19 Aug 2025
Term ends: Not estimatedThe source records don’t support an estimate.

Classification9 codes

G02B 17/0896
Catadioptric systems: with variable magnification or multiple imaging planes, including multispectral systems
G02B 5/3083
Polarising elements: birefringent or phase retarding elements
G02B 5/32
Optical elements other than lenses: holograms used as optical elements
G02B 15/08
By changing a part: by changing the rear part