Focus adjustment system for an image display device
OwnerHibiki Tatsuno, Kiichiro Nishina +3inventors
InventorsHibiki Tatsuno, Kiichiro Nishina, Yasuyuki Shibayama, Takanobu Osaka, Makoto Hirakawa
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Abstract
An image display device includes an image display element, a light source, an illumination system, a projector system comprising a refractive optical system including a plurality of lens groups, and a mirror train including a curved mirror, a first focus structure configured to move the respective lens groups of the refractive optical system by different amounts along a normal line of the image display element, and a second focus structure configured to move the respective lens groups along the normal line of the image display element by different amounts from those of the first focus structure.
Claims1
An image display device comprising:
- an image display element;
- a light source;
- an illumination system;
- a projector system comprising a refractive optical system including a plurality of lens groups, and a mirror train including a curved mirror;
- a first focus structure configured to move the respective lens groups of the refractive optical system by different amounts along a normal line of the image display element;
- and
- a second focus structure configured to move the respective lens groups along the normal line of the image display element by different amounts from those of the first focus structure.
Dependencies are inferred from the claim text.