Shutter and lens apparatus of a digital camera with a stepless focusing function

A shutter and lens apparatus, which comprises:

• a lens housing having a cavity;
• a multi-function support, which is placed in the cavity, having a lens seat, and a plurality of extrusions around the cavity in a bottom surface of the multi-function support;
• a lens positioned in the lens seat;
• a shutter slice having a shutter aperture, and pivoting on a shaft of the multi-function support for allowing the shutter aperture passing light through the lens by pivoting to the shaft;
• a diaphragm having a first aperture and a second aperture, and pivoting on the shaft for allowing the first aperture or the second aperture to pass the axis;
• a first solenoid valve attached on a bottom of the multi-function support for controlling the shutter slice pivoting to the shaft;
• a second solenoid valve attached on the bottom of the multi-function support for controlling the diaphragm pivoting to the shaft;
• a focus adjustment having a focus adjusting gear with a plurality inclines, the extrusions resting on and moving along the inclines thereby changing altitudes of the multi-function support and the lens;
• a first decelerating gear driven by driving means outside the shutter and lens apparatus;
• a second decelerating gear driven by the first decelerating gear and connecting with the focus adjusting gear to tune the focus adjustment;
• a micro adjustment connecting with the focus adjustment for predetermining an altitude of the focus adjustment thereby allowing the lens being adjusted in a focus range;
• a sensor chip base having a plurality of pillars connected with the first decelerating gear, the second decelerating gear, and the micro adjustment;
• a sensor chip coupling with the sensor chip base for transforming the light passing through the lens into electric output signals;
• a spring mounted on the multi-function base;
• and
• a housing cover encasing the spring, the lens, and the multi-function support in the lens housing, the spring stressed between the housing cover and the multi-function support keeping the extrusions contacting with the inclines while focusing the lens.