| 摘要 |
<P>PROBLEM TO BE SOLVED: To provide a projection device having autofocus function and an autofocus method of the same that can make an image projected onto a screen precise and clear by detecting the image on the screen by an image sensor unit and obtaining focusing based on a result of the detection by the projection device. <P>SOLUTION: A projection device 1 having autofocus function includes an image light source generator 10 that generates and outputs an image light source, a first imaging lens 20 that projects the image light source onto a screen A and generates an image, an image sensor unit 30 that detects an optical image and converts it to an electric signal to be output, a second imaging lens 40 that forms the image projected onto the screen A by the first imaging lens 20 on the image sensor unit 30, a temporary memory 50, a microprocessor 60, and at least one driving unit 70, 80. <P>COPYRIGHT: (C)2012,JPO&INPIT |
