| CPC G03B 21/28 (2013.01) [G03B 21/142 (2013.01)] | 10 Claims |
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1. A projector comprising:
a light source device configured to emit light in a first direction;
an image generation device including a light modulation device configured to modulate incident light, the image generation device modulating light made incident from the light source device to generate image light and emitting the image light;
a projection optical device configured to project the image light made incident along a second direction from the image generation device; and
an exterior housing housing the light source device, the image generation device, and the projection optical device, wherein
the projection optical device includes:
an incident side optical path on which the image light is made incident from the image generation device;
a bending member configured to bend the image light having passed through the incident side optical path;
an emission side optical path on which the image light bent by the bending member is made incident;
a reflection element provided on the emission side optical path and configured to reflect the image light made incident thereon and project the image light to an outside of the exterior housing;
an emission side refraction system lens group disposed between the bending member and the reflection element on the emission side optical path;
an incident side refraction system lens group disposed on the incident side optical path; and
a position adjustment device that adjusts a position of a first focus lens on the incident side optical path and a position of a second focus lens on the emission side optical path, the position adjustment device including a first moving frame body that supports the first focus lens and turns centering on a first turning axis and a second moving frame body that supports the second focus lens and turns centering on a second turning axis,
an absolute value of f2/f1 satisfies 4.0<|f2/f1|<20.0, where f1 represents a focal length of the projection optical device that forms an image on the light modulation device and projects the image light and f2 represents a focal length of the reflection element, and
L1/L2 satisfies 1.00<L1/L2<1.35, where L1 represents a lens length of the emission side refraction system lens group and L2 represents a lens length of the incident side refraction system lens group.
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