| 摘要 |
PROBLEM TO BE SOLVED: To reduce the number of components of a compact imaging module and facilitate assembling it by eliminating the need of a diaphragm involved to allow only required light to enter a lens, thereby improving the image forming quality. SOLUTION: The diaphragm is conventionally a unit component of a molding having a fixed thickness and a light pass hole at the center and assembled on the top of a lens 6 in a case 2. A diaphragm mask 9 of a screen film with a hole left at the center covers the surface of the lens 6 by printing, plating, depositing or seal-sticking, etc. This allows the unit component diaphragm to be omitted, resulting in a thinned product. The mask 9 may be provided on an IR cut filter 7, provided that this filter is assembled on the top of the lens 6. If the mask 9 is formed on an IR cut lens formed by applying an IR coat to the lens 6, the IR cut filter 7 is also not needed. COPYRIGHT: (C)2004,JPO
|
