JPH1096990A - Focusing state display device for automatic focusing camera - Google Patents

Abstract

PROBLEM TO BE SOLVED: To display a focusing state and a non-focusing state without reducing the visibility by displaying the non-focusing state by using at least one or more segments used for displaying the focusing state. SOLUTION: A focusing/non-focusing state display part 4 is constituted of segments 4d to 4i, and by lighting a prescribed segment among the segments, a front focus state and a rear focus state presenting the focusing state and the non-focusing state are displayed. That is, the focusing state is displayed by turning on the segments 4d, 4e, 4f and 4g and turning off the segments 4h and 4i. Besides, the front focus state is displayed by turning on the segments 4g and 4h and turning off the segments 4d, 4e, 4f and 4i. In the same way, the rear focus state is displayed by turning on the segments 4e and 4i and turning off the segments 4d, 4f, 4g and 4h. Thus, the number of digits of a shutter second display part 7 is increased by one digit.

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

[0001] 1. Field of the Invention [0002] The present invention relates to an in-focus state display device of an automatic focusing camera.

[0002]

2. Description of the Related Art A conventional focus state display device of an automatic focusing camera will be described with reference to the drawings. FIG. 4 is an explanatory diagram showing the inside of a finder of a conventional autofocus camera. In the figure, the inside of the viewfinder of the camera is composed of an LCD display unit 1 for displaying various shooting information and a field frame 2 for displaying a subject.

The LCD display unit 1 is formed of a transmissive / positive TN type LCD, and displays various information required for photographing. For example, the LCD display unit 1 has a distance measuring area 3 for displaying a wide area or a spot area, and a front focus (a state in which the subject is in focus) 4b or a focus mark 4a or a non-focus mark. Pin (focusing on the back of the subject) mark 4c
Focusing / out-of-focus display unit 4, multi-metering, center-weighted metering or spot metering, and an exposure mode (P: program mode, S: shutter priority mode, A: Exposure priority mode,
M: manual mode, P _S : program shift mode).

Further, the LCD display section 1 has a shutter time display section 7 for displaying a preset shutter time or a shutter time calculated in accordance with an aperture value or the like, and a preset aperture value, Or, an aperture value display section 8 for displaying an aperture value calculated according to the shutter speed, etc., an exposure indicator 9 for displaying a deviation value of exposure with a display width of ± 1 EV from an appropriate exposure level, and a light control. It has a dimming correction display section 10 that is displayed when correction is performed, and an exposure correction display section 11 that is displayed when exposure correction is set. The step width of the exposure indicator 9 is 1/2 EV. As described above, in the conventional camera, the LCD display section is provided below the viewfinder to display various information, and the focus mark and the non-focus mark are separately provided.

[0005]

However, when the LCD display section is provided below the finder, the LCD display section cannot be made larger than the above-mentioned conventional example due to the restriction of the optical path of the finder. As a result, it has been impossible to further extend the range of the exposure indicator to ± 2 EV or more, or to provide a strobe completion display unit (ready light), a number-of-shots display unit, or the like. Also, if an LCD display is newly provided on each side of the view frame of the viewfinder, more information can be displayed, but its visibility is lower than when it is provided below. Resulting in. An object of the present invention is to solve such a problem, and an object of the present invention is to provide an in-focus state display device of an autofocus camera that can display more information without lowering visibility. .

[0006]

In order to achieve such an object, an in-focus state display device of an autofocus camera according to the present invention has a plurality of segments, some of which are displayed. Display means is provided for displaying the in-focus state by combining them, and for displaying the out-of-focus state using at least one of these segments used for displaying the in-focus state. With this configuration, the present invention uses the segment used for displaying the in-focus state and the segment used for displaying the out-of-focus state mutually. Therefore, the present invention can display the in-focus state and the out-of-focus state without lowering the visibility even though the area occupied by these segments is small.

[0007]

Next, details of the present invention will be described with reference to the drawings. FIG. 1 is an explanatory diagram showing one embodiment of the present invention. FIG. 1A shows a state in which all the segments are turned on, and the same reference numerals as those in FIG. 4 indicate the same or the same parts.

The in-focus / out-of-focus display section 4 has segments 4d to 4d.
4i, by turning on a predetermined one of these segments, the in-focus state and the out-of-focus state, ie, the front focus state and the rear focus state, can be displayed. That is, the in-focus state is represented by turning on the segments 4d, 4e, 4f, and 4g and turning off the segments 4h and 4i (FIG. 1B).

Further, the segments 4g and 4h are turned on,
The front focus state is represented by turning off the segments 4d, 4e, 4f, and 4i (FIG. 1C). Similarly, the segments 4e, 4i are turned on, and the segments 4d, 4f,
By turning off 4g and 4h, the back focus state is represented (FIG. 1D).

As described above, by making the in-focus / out-of-focus display section 4 smaller than in the conventional example, the present invention can increase the number of digits of the shutter time display section 7 by one digit, and 9 can be set to ± 2 EV, and a strobe charging completion display section 12 can be provided.

FIG. 2 is an explanatory diagram showing a display example according to another embodiment of the present invention. In the drawing, circular segments are displayed in the in-focus state. And
In the case of the front pin, a segment of a figure having a vertex to the right (for example, a triangle or an arrow) is displayed, and in the case of a rear pin, a segment of a figure having a vertex to the left (as in the case of the front pin) is displayed. In any case, the in-focus state and the out-of-focus state can be represented by a small number of segments. The directions of the figures representing the front pin and the rear pin may be reversed.
Further, the figure displayed in the focused state may not be a perfect circle, but may be replaced by an ellipse or a polygon.

FIG. 3 is an explanatory diagram showing one embodiment of the camera according to the present invention. In FIG. 1, an MCU 20 performs setting, display, and operation control for the entire camera. When the release switch 21 is pressed by the photographer, MCU2 is pressed.
Numeral 0 controls the driving of the AF lens 26 to perform focusing and performs an exposure operation.

At this time, the output of the AF sensor CCD 25 is transmitted to the MCU 20 via the interface 24. The MCU 20 performs an operation based on the received output to determine the in-focus state. Then, in accordance with this determination result, the MCU 20 controls the driving of the LCD drive control circuit 22 to display the in-focus state on the LCD 23 in the finder.

[0014]

As described above, the present invention has a plurality of segments, displays a focused state by combining these segments, and uses at least one segment used for displaying the focused state. By displaying the out-of-focus state, the in-focus / out-of-focus display section can be reduced without lowering the visibility. As a result, the area that can be secured in the viewfinder is expanded, and can be used for displaying other information, and more information can be displayed.

[Brief description of the drawings]

FIG. 1 is an explanatory diagram showing one embodiment of the present invention.

FIG. 2 is an explanatory diagram showing another embodiment of the present invention.

FIG. 3 is a block diagram showing one embodiment of a camera according to the present invention.

FIG. 4 is an explanatory diagram showing a conventional example.

[Explanation of symbols]

3: Distance measuring area display section, 4: Focused / unfocused display section, 4d
4i: Segment, 5: Metering mode display, 6: Exposure mode display, 7: Shutter time display, 8: Aperture value display, 9: Exposure indicator, 10: Light control correction display,
11: Exposure compensation display section, 12: Flash charging completion display section.

Claims (1)

[Claims] An in-focus state display device provided in a viewfinder of an autofocus camera, comprising: a plurality of segments; displaying an in-focus state by combining some of these segments;
An in-focus state display device for an autofocus camera, further comprising display means for displaying an out-of-focus state using at least one of the segments used to display the in-focus state.