| 摘要 |
PURPOSE: A video presenter having a document holder is provided to automatically set up the focus of a document by automatically adjusting the height of a document regardless of the thickness of the document and supporting the document on a spring. CONSTITUTION: A video presenter having a document holder includes a body part wherein a document(19) is placed, a document holder(11) rotatably installed on the upper face of the body part, a head part embedding a camera picking up the image of the document, and a support supporting the head part. Springs are installed on the bottom of a receiving portion(15) of the body part. A document plate of the body part is supported on the springs. The document plate moves upward by the elasticity of the springs and contacts to the bottom face of the document holder. Since the focal length of the head part is set up to adjust with the document holder, the camera automatically focuses on the document. |
