Projector comprising a microcomputer for controlling zoom and focus adjustments utilizing pattern generation and calculation means

A projector that projects an image displayed on an image display device onto a screen via an interchangeable projection lens, the projector comprising:

• a lens driving means for driving the projection lens;
• a receiving means for receiving inputs respectively regarding at least one projection condition and the projection lens attached to the projector;
• a parameter determining means for determining a control parameter to control the lens driving means, in accordance with the received inputs regarding the projection condition and the projection lens;
• and
• a control means for controlling the lens driving means in accordance with the determined control parameter.

A projector that projects an image displayed on an image display device onto a screen via an interchangeable projection lens, the projector comprising:

• a receiving means for receiving an input of at least one projection condition;
• a storing means for storing information regarding a characteristic for each of a plurality of interchangeable projection lenses;
• a selecting means, in accordance with the information stored in the storing means, for selecting a projection lens from the plurality of projections lenses as an optimum projection lens, the characteristic of the selected projection lens most satisfying the received projection condition;
• and
• a displaying means for indicating the projection lens selected as the optimum projection lens.

A projector that projects an image displayed on an image display device onto a screen via a projection lens, the projector comprising:

• a lens driving means for driving the projection lens;
• a receiving means for receiving an input from a user;
• a control means for controlling the lens driving means in accordance with the input received from the user;
• a pattern generating means for displaying a predetermined pattern formed from a plurality of pattern images on the image display device so that the plurality of pattern images are respectively displayed at a plurality of positions on a display area of the image display device;
• a calculating means for calculating errors in setting conditions of the projector in accordance with amounts of control to be performed by the control means for each pattern image through an input operation which the user performed to adjust a projection state of the pattern image projected on the screen;
• and
• a displaying means for indicating the errors calculated by the calculating means.