The present invention relates to an image projection apparatus, a projection image pattern, a laser drive apparatus and a camera apparatus fit for use with an electronic still camera for example. In the present invention, when a microcomputer 8 detects that a shutter release 9 is depressed, a focusing lens 3 is controlled so that a contrast signal obtained when a luminance signal from a camera signal processing circuit 6 is supplied to an auto focusing detection circuit 7 may become maximum. A control signal from the microcomputer 8 is supplied to a laser driver 13, so that a laser diode 14 is driven to generate light of laser beams only while this control signal is supplied to the laser driver. The light of laser beams thus generated is further condensed into light of parallel laser beams by a condenser 15. These parallel laser beams are applied to a hologram plate 16 and thereby diffracted. The laser beams thus diffracted are caused to interfere with each other, whereby a hologram reproduced image 17 is reproduced. This makes it possible to project a hologram reproduced image with sufficient contrast onto an object by small power consumption. Therefore, satisfactory focusing can be made in an auto focus mode of the contrast detection system or in a manual focus mode. At the same time, this apparatus can really be incorporated, for example, into a small electronic still camera with ease.
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