KR960004927B1 - Zoom lens camera - Google Patents

Abstract

No content.

Description

Zoom camera

1 is a block diagram showing a configuration of a first embodiment of a zoom camera of the present invention.

2 is a flowchart for describing main switch processing in the first FIG.

FIG. 3 is a flowchart for explaining the preset zoom processing of the flowchart in FIG.

4 is a flowchart for explaining a normal zoom process of the flowchart in FIG.

5 is a block diagram showing the configuration of another embodiment of a zoom camera of the present invention.

6 is a flowchart for explaining main switch processing in the fifth embodiment;

7 illustrates the display of the FIG. 5 embodiment.

FIG. 8 is a view for explaining a mode change by operating a mode switch and a selection switch in the FIG. 5 embodiment. FIG.

9 is a flowchart for explaining a focal length setting / release process of the flowchart in FIG.

FIG. 10 is a flowchart for explaining the preset zoom processing of the flowchart in FIG.

FIG. 11 is a flowchart for explaining normal zoom processing of the flowchart in FIG.

* Explanation of symbols for main parts of the drawings

1: main switch 2: control means

3: mode switching means 4 operation means

5: storage means 6: display means

7: operation means 8: driving means

9: Zoom Motor 10: Zoom Lens

11 detection means 12 switching means

[Industrial use]

The present invention relates to a zoom camera capable of driving a zoom lens with a motor or the like and photographing a subject at an arbitrary focal length (angle of view).

[Prior art]

In a camera having a zoom lens, the subject can be photographed at an arbitrary focal length (angle of view) by moving the zoom lens to a predetermined position. The zoom lens can be moved manually or automatically by a motor or the like.

[Problem to Solve Invention]

However, certain focuses can be set by manually operating the zoom lever or manipulating the TELE switch or WIDE switch while checking the subject with a finder or monitor of a conventional zoom camera. It was inconvenient to take time to accurately set the distance.

This invention is made | formed in view of such a situation, and it is made possible to set a specific focal length (angle of view) repeatedly in a short time correctly.

[Means for solving the problem]

The zoom camera of the present invention has an operation means operated when setting a focal length, a storage means for storing the focal length input by the operation of the operation means, a driving means for driving the zoom lens, and a detection for detecting the focal length of the zoom lens. Means and control means for comparing the value stored in the storage means with the value detected by the detection means and controlling the driving means in correspondence with the comparison result.

[Action]

In the zoom camera having the above-described structure, a predetermined focal length (angle of view) can be stored in a storage means made of, for example, an EEPROM. The control means monitors the focal length of the zoom lens at the output of the detection means, and controls the driving means so that the zoom lens stops at that position when the value becomes equal to the value stored in the storage means.

Therefore, it is possible to repeatedly set a specific focal length in a short time accurately.

EXAMPLE

1 is a block diagram showing the configuration of an embodiment of a zoom camera of the present invention.

In the figure, 1 is a main switch, and the power supplied to each circuit, means, etc. is turned on or off by the operation. 2, the control means controls the photographing operation. 3 is a mode switching means for operating the zoom camera mode. 5 is a storage means made of a memory or the like, and confirms the focal length (angle of view) input by the operation of the operation means 4. 6 is a display means for displaying a focal length and the like. 7 is operated when zooming by the operating means. 8 drives the zoom lens 10 through the zoom motor 9 as driving means. 11 is a detection means, which calculates a focal length (view angle) of the zoom lens 10 and outputs it to the control means 2. 12 is a switch means for switching between normal zoom and preset zoom modes.

Next, the operation will be described with reference to the flowchart of FIG.

Initially, the operation of the main switch 1 is determined, and when it is turned on, the control means 2 executes the initialization process of the zoom lens 10 (steps: S1, S2). Next, the control means 2 reads out the preset focal length stored in the storage means 5 and displays it on the display means 6 (S3).

Then, the operation of the switching means 3 and the operation means 4 is determined, and when the focal length setting / release mode is set and the operation is performed, the preset focal length corresponding to the operation is changed and the display means (6) (S4 to S6).

Next, when the operation means 7 is operated, the preset zooming process or the normal zooming process is executed corresponding to the mode by the operation of the switching means 12 (S7 to S10).

Unless the main switch 1 is turned off, the processes of steps S4 to S10 are repeatedly executed (S11).

The above preset zoom processing is processed according to the flowchart of FIG.

First, it is determined whether or not a predetermined focal length is preset in the storage means 5 (S21). When it is preset, the focal length of the zoom lens 10 is detected from the output of the detecting means 11 (S22). The zoom motor 9 is driven until the detected value is equal to the preset value (S23, S24). When the position of the focal length equal to the preset value is reached, the zoom lens 10 is stopped (S25).

On the other hand, normal zoom processing is processed according to the flowchart of FIG.

In this case, the zoom motor 9 is driven until a limit switch (not shown) constituting a part of the detection means 11 is turned on, and when the operation of the operation means 7 is stopped or the limit switch is turned on, the zoom motor ( 9) is stopped (S31 to S34).

5 is a block diagram showing the construction of a second embodiment of a zoom camera of the present invention.

In this embodiment, the microcomputer 20 is used as the control means 2. 30 is a mode switch as the mode switching means 3. Moreover, as the operation means 4, it is operated when all-reset switch 22 which resets all preset values, the reset switch 23 which resets a predetermined preset value, and up or down display values. The up switch 24, the down switch 25, and the selection switch 26 operated when selecting a mode are provided.

50 denotes an EEPROM as the storage means 5, and 60 denotes an LCD display circuit as the display means 6. As the operation means 7, a deli switch 27 and a wide switch 28 are provided. 80 is a drive circuit as the drive means 8.

29 is a detection circuit, for example, irradiates light to the encoder 30 attached to the zoom range 10 including a photo reflector, and detects the focal length (view angle) of the zoom lens 10 from the reflected light. 31 is an initialization switch, and detects the initial position of the zoom lens 10. The detection means 11 is comprised by these. 120 is a changeover switch as the changeover means 12. Next, the operation will be described with reference to the flowchart of FIG. When the main switch 1 is turned on, the zoom motor 9 is driven through the driving circuit 80, and the zoom lens 10 is moved in the wide direction until the initialization switch 31 is turned on (S41 to S43). .

When the zoom lens 10 is moved to the position where the initialization switch 31 is turned on (initial position), the preset value stored in the EEPROM 50 is read out and displayed on the LCD display circuit 60 (S44, S45). ). At this time, the actual display distance (zoom position) of the zoom lens 10 detected by the detection circuit 29 is also displayed on the LCD display circuit 60 (S45).

7A shows an embodiment of the display of the LCD display circuit 60. FIG. In this embodiment, the actual position of the zoom lens 10 is determined by the lighting position of the bar shape laterally long, and the preset value is determined by the numbers 28, 35, 50 and the points therebetween, respectively. Is indicated. In the figure, since the bar-shaped figure at the left end is lit, the zoom lens 10 is arranged in the widest direction (initial position). Since the right point of the number 28 and the number 50 are lit, the focal length is preset to these values.

For example, the normal zoom is now selected and set by the changeover switch 120. In this state, when the teleswitch 27 is turned on, the microcomputer 20 moves the zoom motor 9 through the driving circuit 80. ) To move the zoom lens 10 in the tele direction. As a result, the display of the LCD display circuit 60 is as shown in FIG. 7 (b). At this time, the zoom lens 10 is moved to the focal length position of the right figure of the number 35.

When the wide switch 28 is turned on, the display is as shown in Fig. 7C. At this time, the zoom lens 10 is moved to the position of the left figure of the number 35.

After such display is performed, next, operation of the mode switch 30 is determined, and when operated, the next mode is set and displayed (S46, S47).

8 shows the mode change when the mode switch 30 is operated.

As shown in the figure, each time the mode switch 30 is operated, the shooting mode, recording mode, WB (white balance) mode, focal length setting / release mode, year, month, date, hour, minute, second Mode cycles in order of setting mode.

In the shooting mode, each time the selection switch 26 is operated, the mode cycles in the order of single, self, continuous shooting (continuous picture) 1, continuous shooting 2, and continuous shooting 5.

Similarly in the RecNormal, Rec AV, Erase, and WB modes in the mode, in the Auto, Cloudy, Clear, Fluorescent, Lamp, Year, Month, Date and Time setting modes, Each mode is cycled in the order of month, day, hour, minute, second.

In the focal length setting / release mode, each time the up switch 24 and the down switch 25 are operated once, the lit or blinked position moves to the right or left one by one between the numbers 28 and 50.

When a mode other than the focal length setting / release mode is set in response to the operation of the mode switch 30 as described above, the processing of the mode is performed (S48, S51).

When the focal length setting / release mode is set, the f mark is displayed, and the display corresponding to the position (zoom position) of the zoom lens 10 flashes reset (S49). If the focal length corresponding to the zoom lens position is already preset, the preset blinks.

Fig. 7 (d) shows the display in this state. In this embodiment, the dot on the left of the number 35 is blinking reset. Here, the reset blinking means a blinking state in which the lighting time is shorter than the lighting time.

Next, the focal length setting / release process is executed (S50).

The details of this processing are shown in the flowchart of FIG.

First, the operation of the upswitch 24 and the downswitch 25 is determined, a larger focal length is selected and flashed when the former is operated, and a smaller focal length is selected and blinked when the latter is operated. (S61 to S64).

For example, in the display shown in Fig. 7 (d), if the upswitch 24 is operated twice, as shown in the same drawing (e), the two reset blinking positions move to the right, and the downswitch ( When 25) is operated once, as shown in the same drawing f, the reset blinking position moves one to the left.

Next, the operation of the selection switch 26 and the reset switch 23 is determined, and the preset blink display when the former is operated, and the reset blink display when the latter is operated (S65 to 68), respectively. .

For example, in the display shown in FIG. 7 (f), when the selector switch 26 is turned on, as shown in the same drawing g, the number 35 which has been reset and flashed there up to the preset blinking display. Change. Here, the preset blinking display means a long blinking state in which the lighting time is compared with the unlit time.

This preset blinking means that the value is preset.

When the down switch 25 is operated twice in the display of Fig. 7 (g), as shown in the same drawing (h), the preset blinking positions move to the left two sides, and the focal length after the movement is already preset. The preset flashes. In addition, 35 display lights. Here, when the reset switch 23 is operated again, the preset is released, and as shown in FIG. 7 (i), the preset blink is changed to reset blink.

When the mode switch 30 is operated in this state and the focal length setting / release mode is released, the value preset by the operation up to that point as shown in Fig. 7 (j) (in this embodiment, the number 35 50) lights up and the f mark goes out.

In addition, when the preset switch 22 is turned on, all presets are released, and as shown in FIG. 7 (k), the preset value is turned off, and the selection / release positions up to that point are reset. The set blinks (S69, S70).

After the focal length setting / release processing (S50) is completed in this manner, the operations of the teleswitch 27 and the wide switch 28 are determined (S52, S53). When these switches are operated, the selection state by the changeover switch 120 is again determined, and the preset zoom processing or the normal zoom processing is executed in response to the selection (S54 to S56). Here, the preset zoom process will be described with reference to the flowchart of FIG.

When the preset information is stored in the EEPROM 50, the microcomputer 20 detects the focal length of the zoom lens 10 at the output of the detection circuit 29 (S71, S72), and turns on the teleswitch ( 27), presence or absence of a preset value larger than the zoom position is determined (S73, S74).

If there is a preset value larger than the zoom position, the focal length is detected by the detection circuit 29 and displayed on the LCD display circuit 60 (S75). If the detected focal length is not equal to the large preset value, the zoom lens 10 is moved in the tele direction, and the focal length is periodically detected therebetween, and the lighting position of the display also moves along with it (S76, S77). When the large preset value coincides, the movement of the zoom lens 10 is stopped (S78).

On the other hand, when the wide switch is turned on, if there is a preset value smaller than the zoom position, the zoom motor is driven in the wide direction, and the zoom lens 10 is driven to the small preset value (S79 to S82).

Next, the normal zoom processing will be described with reference to FIG.

When the teleswitch 27 is turned on, the zoom position is detected and displayed, and the zoom motor 9 is driven in the tele direction unless the limit switch (not shown) in the tele direction is turned on (S91 to S94). When the limit switch is turned on, the zoom motor 9 is stopped because no further movement is made (S99).

Similarly, when the wide switch 28 is turned on, the zoom lens 10 is moved in the wide direction unless the limit switch (not shown) in the wide direction is turned on (S95 to S99).

After the preset zoom processing S55 or the normal zoom processing S56 is executed in this manner, the processing after step S46 is repeated unless the main switch 1 is turned off.

As described above, according to the zoom camera of the present invention, the focal length (angle of view) is stored in advance so that the zoom position can be automatically moved to the storage position. Therefore, the predetermined focal length (angle of view) can be set accurately and quickly repeatedly. Become.

Claims (8)

Means for manually setting a plurality of focal lengths of the zoom lens coupled to the zoom lens camera, means for storing the focal length of the zoom lens input through operation of the setting means, means for driving the zoom lens, the focal length of the zoom lens Means for detecting a; and means for comparing the value stored in the storage means with the value detected by the detecting means and controlling the driving means in response to the comparison result, wherein the zoom lens has a wide and a tele focal length. A zoom camera having a limit, wherein the focal length setting is set at a distance between the limits including the limit. The zoom lens camera of claim 1, wherein the zoom lens camera includes a plurality of modes, and one of the zoom lens cameras is a mode for releasing a focal length setting mode. A zoom camera characterized by being enabled by. 3. The zoom camera according to claim 2, wherein the focal length setting means further comprises switch means operable to set a focal length of the zoom lens while the focal length release mode is selected. 4. The method according to claim 3, wherein the focal length setting means, in which a plurality of predetermined focal lengths are set, selects one of a plurality of predetermined focal lengths when the switch is turned on and the selected focal length is stored in the storage means. A zoom camera characterized by the above. The zoom camera according to claim 1, further comprising means for manually zooming the driving means. 2. A zoom camera according to claim 1, further comprising means for manually zooming the drive means in a tele or wide direction. The zoom camera according to claim 1, further comprising means for displaying a focal length stored in said storage means. 8. The zoom camera according to claim 7, wherein said display means displays the actual focal length detected by said detection means, unlike the method of displaying said focal length stored by said storage means.