US 2018/0024369 A1Published application

Head-Mounted Display

AssigneeKonica Minolta, Inc.

InventorJunichi KATO

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Abstract

A head mounted display (HMD) is provided with a frame worn on the head of an observer and supporting an optical unit, and a position adjusting mechanism. The position adjusting mechanism adjusts the position, in a vertical direction, of the optical unit by moving a nose-pad portion in the vertical direction relative to the frame. The optical unit includes: an observation optical system positioned in front of the eyes of the observer to cause light representing an image generated by an image generation unit to be diffracted and reflected by a hologram optical element in the direction of the observer's pupil, thereby enabling the observer to observe a virtual image of the image; and a rotating mechanism for causing the optical unit to rotate about an axis along the eye-width direction of the observer and to be held in an arbitrarily defined position.

Claims11

Dependent claims

A head-mounted display, comprising:

an optical unit which enables an observer to observe a virtual image;
a frame which is worn on a head part of the observer and which supports the optical unit;
a nose rest which has a nose pad that makes contact with a nose part of the observer;
and
a position adjustment mechanism which, by moving the nose rest in an up-down direction perpendicular to an interpupillary distance direction of the observer in relative terms with respect to the frame, adjusts a position of the optical unit in the up-down direction,
wherein
the optical unit includes:
an image generator which generates an image;
an observation optical system which is disposed in front of an eye of the observer and which, by diffraction-reflecting light representing an image generated by the image generator in a direction of a pupil of the observer with a hologram optical element, enables the observer to observe a virtual image of the image;
and
a pivot mechanism which permits the optical unit to pivot about an axis along the interpupillary distance direction of the observer and which holds the optical unit at an arbitrary position.

8 more elements

Dependencies are inferred from the claim text.