JPS6349511U - - Google Patents

Description

[Brief explanation of the drawing]

Figure 1 is a block diagram showing the configuration of the present invention;
The figure is a conceptual perspective view of the main elements showing an embodiment of a lens shutter type camera to which the present invention is applied. FIG. 4 is a plan view of FIG. 2, FIGS. 5 and 6 are cross-sectional views taken along lines - and -, respectively, of FIG. 3, and FIG. 7 is a front view showing the arrangement of the zoom motor. FIG. 8 is a developed view of the front group cam groove and rear group cam groove of the cam ring, FIG. 9 is an exploded perspective view of the lens barrel block, and FIGS. 10 and 11 are the barrier blocks. 12 is a conceptual diagram of a distance measuring device based on the triangulation principle, and FIG. 13 is a conceptual diagram of the distance measuring device shown in FIG. 12 with a short-distance correction optical element inserted. Figure 14 is an enlarged view of the short distance correction optical element in Figure 13.
5 is a front view of the same, FIG. 16 is a plan view of the cam plate portion of the finder block, FIG. 17 is a sectional view taken along the line - in FIG. 16, FIG. 18 is a rear view of FIG. 16, and FIG. The figure is a plan view of FIG. 16 with the cam plate removed, FIG. 20 is a front view of FIG. 19, FIG. 21 is a sectional view taken along the line - in FIG. 23 is a cross-sectional view of the deflection prism in a different operating state, FIG. 23 is a vertical cross-sectional view of the deflection prism when the deflection prism is inserted, with the deflection prism operating plate removed, and FIG. 24 is a cross-sectional view showing the deflection prism in its inserted state. 20 is a front view similar to that of FIG.
Figure 6 is a developed view showing the correspondence between the code plate and the land of this code plate and each cam groove, and Figure 27 is a developed view of the code plate and the correspondence relationship between the land of the code plate and each cam groove.
Diagrams showing the zoom code using the code board in Fig. 6 and the stop position thereof, Fig. 28, Fig. 2
9 and 30 are a front view, a rear view, and a plan view showing examples of the arrangement of each operation switch of a camera to which the present invention is applied, and FIGS. 31 and 32 are relationships between the mode changeover switch and the macro button. showing,
33 is a block diagram showing the control system of the camera to which the present invention is applied; FIG. 34 is a sectional view of the camera in different operating states;
The figure is a drive circuit diagram of the zoom motor, and FIGS. 35 to 38 are flowcharts showing the operation of the camera of the present invention. DESCRIPTION OF SYMBOLS 1... Lens barrel block, 2... Finder and strobe block, 3... Light emitting section, 4... Light receiving section, 4e... Short distance correction optical element, 5... Zoom motor, 7... Pinion, 11... Rear fixation plate, 12
...Guide rod, 13...Front fixing plate, 14...
Cam ring, 16... Front group frame, 17, 19... Roller, 18... Rear group frame, 20, 21... Zooming cam groove, 24... Front group lens frame, 23... Shutter block, 25... Helicoid, 30... Barrier block, 53... Cam plate, 54... Viewfinder block, 55... Magnification variable cam groove, 54... Parallax correction cam groove, 57... Strobe cam groove, 58... Xenon lamp, 63, 64, 65...
... Guide groove, 66 ... Variable magnification lens frame, 67 ... Deflection prism operating plate, 68 ... Strobe case, 6
6a, 67a, 68a...Guide protrusion, 69, 7
0,71...Followed pin, 76...Position regulation piece, 9
0... Code plate, 92... Brush, 99... Release button, 100... Zoom motor control unit, 101... Mode changeover switch, 1
02...Zoom switch, 103...Photometry switch, 104...Zoom encoder, 109...Main control unit, 107...Zoom motor drive circuit, L1 to L6...Lens, P1
...A declination prism.

Amendment November 18, 1982 The scope of claims for utility model registration is amended as follows.

[Scope of Claim for Utility Model Registration] (1) In a lens shutter type camera equipped with a photographing optical system that automatically adjusts the focus according to the distance of the object detected by a distance measuring device , a position detecting means configured by a zoom lens system to be changed and detecting a lens position of the zoom lens system;
A zoom switch that starts the zoom motor, which is the drive source of the zoom lens system, when the switch is turned on, and a lens position detected by the position detection means when the zoom switch is turned on and the zoom motor is rotating are predetermined. step determining means for determining whether or not the plurality of focal length positions have changed by a predetermined step ; and the step determining means determines whether the lens position has changed by a predetermined step among the plurality of predetermined focal length positions. 1. A zoom lens system drive device for a lens shutter type zoom lens camera, characterized in that a stop means is provided for stopping the rotation of the zoom motor when the zoom motor is determined. (2) The step determination means determines that the lens position is two of the plurality of predetermined focal length positions in one rotational direction of the zooming motor.
After a predetermined period of time has elapsed after the step has changed, the rotation of the zoom motor is reversed so that the lens position is set to one of the plurality of predetermined focal length positions.
A zoom lens system driving device in a lens shutter type zoom lens camera according to claim 1, which is a means for determining whether or not a step has changed.

Claims (1)

[Scope of Claim for Utility Model Registration] (1) In a lens shutter type camera equipped with a photographing optical system that automatically adjusts the focus according to the distance of the object detected by a distance measuring device, It is composed of a zoom lens system that changes continuously, and also includes a position detection means for detecting the lens position of the zoom lens system, a zoom switch that starts a zoom motor, which is a drive source of the zoom lens system, when the switch is turned on; step determining means for determining whether the lens position detected by the position detecting means has changed by one step of a plurality of predetermined focal length positions when a switch is turned on and the zoom motor is rotating; and stop means for stopping the rotation of the zoom motor when the step determination means determines that the lens position has changed by one step of the plurality of predetermined focal length positions. A zoom lens system drive device in a lens shutter type zoom lens camera. (2) The step determining means determines that the lens position is two of the plurality of predetermined focal length positions in one rotational direction of the zooming motor.
The means determines whether the lens position has changed by one step of the plurality of predetermined focal length positions while reversing the rotation of the zoom motor after a predetermined time has elapsed after the lens position has changed by a step. A zoom lens system drive device in a lens shutter type zoom lens camera according to claim 1 of the utility model registration claim.