The eyes, the camera, projector imaging principle

Eye imaging from the emitted or reflected objects around the light, through the pupil and lens, gathered in the eyes on the retina at the back of the formation of these objects, image. Notable is, is formed on the retina is inverted image, through the brain to form the regulation we perceive as.

The camera imaging principle: the camera lens is equivalent to a convex lens, the light from the object through the lens of a camera gather in the film, inverted, narrowing of the real image.

Measuring projector imaging principle: the workpiece to be measured is Y is arranged on the worktable, the transmission or reflection illumination, it consists of objective 0 to enlarge the realities of Y ′( like ) and optical microscope M1 and M2 reflex grinding surface to screen P. When the reflector M1 into image system, Y ' is like, a completely reversed and workpiece image, inverse CM-300-C/D projector screen in the available standard glass work rule of Y' measurementcan also use pre-rendered good standards compare it measured map. Magnification objective lens numerical divided by the measured is measuring the size of workpiece. Can also coordinate measurement of workpiece Y, using digital measuring system on the work table can also view of workpiece using projection screen rotation angle measurement digital display system. Figure S1 and S2 respectively, the transmission and reflection lighting K1 and K2 respectively, the transmission and reflection condenser. The properties of the workpiecetwo lighting can be respectively usedcan also use. Half mirror L is used only in reflection illumination.

The eyes, the camera, projector imaging focusing manner?

The eye and the camera image blur, generally by adjusting the lens to adjust the focal length,

The projector is by adjusting the worktable to realize focusing. Such as rational projector is to lift table by adjusting the focusing handwheel, so as to realize the focusing.