Multipurpose projector with detachable projecting unit

A multipurpose projector having a detachable projecting unit comprising:

• a body including,
• a sheet of transparent glass at an upper side of the body, and
• an attaching recess which is formed at one side of an optical system region of the body;
• a projecting unit attachable into the attaching recess over the transparent glass by means of a rotatable post attached to the body, in response to a user's option, for diverging and projecting moving pictures;
• a liquid crystal display projector part including,
• a light source disposed movably in a vertical direction in a rear part of the optical system in the body for emitting light at a predetermined luminous intensity,
• a first focusing lens for focusing the light emitted from the light source,
• a liquid crystal panel for receiving light focused by the first focusing lens for converting an electrical image received from outside into an optical image, and
• a zoom lens for adjusting size of the optical image converted in the liquid crystal panel;
• an overhead projector part disposed in the optical system in the body including,
• a second focusing lens for focusing the light emitted from the light source,
• a plurality of total reflection mirrors for deflecting a path of the light focused by the second focusing lens at a right angle from a horizontal direction to a vertical direction, and
• a Fresnel lens detachably disposed in the body for focusing the light deflected into the vertical direction at the total reflection mirrors;
• and,
• an image sensor disposed in the rear part of a projecting lens in the liquid crystal display part for converting a received optical image into an electrical image.