JPH06294925A - Camera with zoom lens - Google Patents

Abstract

PURPOSE:To provide a camera with a zoom lens which is compact, whose operability is excellent and whose vibration can be reduced at a photographing time. CONSTITUTION:The camera with a zoom lens is constituted of a CPU 1 controlling a component member, a zoom control part 2 driving a zoom lens 3, a finder display part 4 executing the lighting and the flickering of character displays (LED) 4a and 4b provided in a finder, a detection part 5 for the direction of the line of sight detecting which position in the finder is gazed by the eye 6 of a photographer looking in the finder, a part 7 for detecting whether the gazing is continued or not detecting whether the photographer continues the gazing or not and a gazing time measurement part 8 measuring time that the gazing is desired to be continued.

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a camera with a zoom lens for controlling the driving of the zoom lens by gazing at a character provided in a viewfinder.

[0002]

2. Description of the Related Art Generally, there is a camera with a zoom lens that allows a photographer to take a picture at a desired angle of view.

As for the setting of the focal length by the zoom lens of such a camera, manual setting or a combination of a manual button and an electric actuator is widely used. In particular, there is a demand for a high-power zoom lens capable of zooming a range of a long focal length, that is, capable of shooting a distant object having a high power.

Further, for example, in Japanese Patent Application Laid-Open No. 2-332312, autofocus (AF) by line-of-sight input, which detects the line-of-sight of a photographer within a screen formed on a finder and focuses on a subject to be gazed ) A camera is proposed.

Further, Japanese Patent Laid-Open No. 4-124235 proposes a camera information setting device capable of changing setting data such as an aperture value while observing a subject imaged in a viewfinder according to a photographer's line of sight. There is.

[0006]

However, if the focal length is increased by using the above-described high-magnification zoom lens,
It is not a thing that can photograph a distant subject large and beautifully. In other words, as the angle of view becomes narrower, minute vibrations of the camera and movement of the subject become larger, and when this is exposed, blurry pictures due to blurring are often taken.

In particular, prevention of camera shake is an important issue for camera manufacturers, and improvement of holding and innovation of vibration detection technology are desired.

Further, although correct holding is the basis for reducing camera shake, there are many cases where a zoom lens control button for a camera is provided at a position where it is difficult to operate.

It is not easy to take a photograph without camera shake after zooming to the long focal length side with such a camera.

Further, when the zoom lens control button is arranged at a position where the operability is good, the size of the camera body becomes large and a design problem occurs, which is not optimal.

SUMMARY OF THE INVENTION Therefore, an object of the present invention is to provide a camera with a zoom lens, which is small in size, has good operability, and has reduced vibration of the camera during photographing.

[0012]

In order to achieve the above-mentioned object, the present invention displays a function mode for driving a photographing optical system to a desired focal position in a viewfinder by a character which can be visually recognized. Display means, line-of-sight direction detection means for detecting the line-of-sight direction of a photographer who is gazing at a desired one of the characters, and the photographer after the line-of-sight direction is detected by the line-of-sight direction detection means A gaze time measuring means for measuring the time of gazing a desired one of the above, based on outputs of the gaze direction detecting means and the gaze time measuring means, the photographing optical system is driven to a desired focus position. Provided is a camera with a zoom lens, which is configured with a drive control unit for controlling the above.

Further, a display means provided in the viewfinder for displaying a function mode for driving the photographing optical system to a desired focal position by a visually recognizable character, and a desired one of the characters is watched. A line-of-sight direction detecting means for detecting the line-of-sight direction of the photographer, and detecting that the photographer continues to gaze at a desired one of the characters after the line-of-sight direction is detected by the line-of-sight direction detecting means. With a zoom lens configured to include a gaze continuation presence / absence unit and a drive control unit that controls the photographing optical system to be driven to a desired focus position only when the gaze continuation presence / absence unit outputs. Provide a camera.

[0014]

With the camera with a zoom lens having the above-described structure, the character in the functional mode provided in the viewfinder of the display means is gazed at, and the line-of-sight direction detecting means moves the photographing optical system to a desired focus position at a desired speed. The function mode of driving by and the function mode of performing exposure are selected and driven by an amount or a desired operation according to the time the photographer is gazing.

[0015]

Embodiments of the present invention will now be described in detail with reference to the drawings.

FIG. 1A shows a conceptual configuration of a camera with a zoom lens as a first embodiment according to the present invention.

This camera has a CPU 1 composed of a one-chip microphone computer for controlling the constituent members, a zoom controller 2 for driving a zoom lens 3, and a viewfinder provided in the viewfinder as shown in FIG. 1B. A finder display unit 4 that lights and blinks the character displays (LEDs) 4a and 4b, and a line-of-sight direction detection unit 5 that detects which position in the finder the eyes 6 of the photographer looking into the finder gaze. The gaze continuation presence / absence detection unit 7 that detects whether the photographer continues to gaze, and the gaze time measurement unit 8 that measures the time during which the gaze continues.

The LED 4a shown in FIG. 1 (b) is for zooming the zoom lens 3 to the wide side (W), and the LED 4b is for zooming the zoom lens 3 to the tele side (T). Of the
Each of the LEDs 4a and 4b is controlled so as to blink during operation and turn on when stopped, and also serves as a detection unit for detecting the line-of-sight direction.

Further, the CPU 1 controls the LE on the wide side by the photographer.
It is detected whether the D4a or the LED 4b on the tele side is gazing or whether the angle of view is gazing, and according to the result, the zoom lens 3 is moved to the tele side or the wide side via the zoom control unit 2. It is determined whether or not to perform zooming, and drive control is performed.

The zooming operation of the camera with a zoom lens configured as described above will be described with reference to the flow chart shown in FIG. 1 (c).

First, the LED 4 is detected by the line-of-sight direction detection unit 5.
It is determined whether or not gazing at a and 4b (step S
1). In this determination, if the user is gazing (YES), the counter is reset (step S2), and the gazing time T is counted until the gazing ends (steps S3 and S4). With respect to this gazing time T, the zoom amount Z1 is determined by gazing at one of the LEDs 4a and 4b (step S5).

Next, zooming is started, and at the same time, the CPU 1 monitors the zooming amount Z1 from the zoom controller 2 (step S6).

Next, when the 1st release switch 37 is turned on (step S7), or when the zoom amount reaches the zoom amount Z1 obtained in step S5 (step S8), the zooming operation is stopped (step S).
9).

Therefore, as the time for gazing at the LEDs 4a and 4b becomes longer, the zoom amount becomes larger. By half-pressing the release button (shutter button) and turning on the 1st release switch 37, the zooming operation is performed at an arbitrary angle of view. To stop.

With the camera thus constructed, the photographer can perform non-contact zooming without manually operating the zoom button, and can perform zooming operation without the need for manual operation.

Next, FIG. 2A shows a schematic structure of a finder optical system of a camera in which the above-described line-of-sight direction detecting unit 5 of the camera is incorporated.

This finder optical system includes an objective lens 20.
Also, a half mirror 21 is provided in the center of the eyepiece lens 22, and the line-of-sight direction detection unit 5 is arranged above the half mirror 21. The line-of-sight direction detection unit 5 includes a half mirror 23,
It is composed of a first imaging lens 26, a second imaging lens 27, a light emitting diode 24, and a line sensor 25 such as a CCD.

The individual sensor arrays in the line sensor 25 are arranged in the direction perpendicular to the paper surface in FIG. 2, that is, in the horizontal direction when the camera is viewed from the front.

The line-of-sight direction detecting section 5 transmits the light from the light emitting diode 24 to the first image forming lens 26 and the half mirror 23.
21 to the eye 6 of the photographer, and the reflected light reflected by the eye 6 is passed through the half mirrors 21 and 23 and the second imaging lens 27 to the cornea reflected light image on the line sensor 25. It is configured to detect a boundary (iris edge) between the iris and the white eye.

In FIG. 2B, the output value of the line sensor corresponding to the above-mentioned corneal reflection image and the iris edge is the position of the line sensor 25 along the axis passing horizontally through the center of the eye. Are shown respectively.

In FIG. 2B, the output of the line sensor is the output A of the corneal reflection image, the output B of the iris edge,
C, and the CPU 1 processes the line-of-sight direction of the photographer using the relative relationship of the positions of these outputs A, B, and C.

Next, FIG. 3 shows a block diagram of a camera equipped with the above-mentioned line-of-sight direction detecting section 5 and will be described. Here, of the constituent members of this camera, the same members as those of FIG. 1A are designated by the same reference numerals, and the description thereof will be omitted.

In this camera, in the CPU 1, the distance measuring circuit (AF) 30 detects the distance to the subject,
The camera's autofocus function is provided as a CP
U1 activates the AF circuit 30 at a predetermined timing and adjusts the focus according to the output signal.

Further, the CPU 3 outputs a brightness signal from the sensor 32 for determining the brightness of the subject, and in accordance with a control signal of the CPU 1, the motor 3 is transmitted via the motor driver 33.
An interface (IF) circuit 31 for driving 4 is connected.

The movement of the motor 34 is detected by the encoder 35 and input to the CPU 1. Although only one motor 34 is shown as a representative in this figure, a plurality of motors 34 are usually provided for zooming.
It is used as power for shutter control, film winding control, and so on.

The zooming drive of the zoom lens 3 is performed by driving the motor 34 via the IF circuit 31 and the driver 33 according to the control signal of the CPU 1. The viewfinder 36 is also designed to zoom in conjunction with the taking lens so that the photographer can easily understand it.

The 1st release switch 37 is a switch that is turned on while the release button is being pressed (half-pressed state), and is called "first release", and detects the timing immediately before the start of shooting by the photographer. is there. The 2nd release switch 38 is a switch that is turned on when the release button is completely pressed, and detects the shutter button, that is, the timing of exposure.

The main switch 39 provided in the CPU 1 is a switch that operates the CPU 1 in the on state and prohibits the operation in the off state, and reduces unnecessary current consumption and prevents malfunctions other than during photographing.

Next, the operation of the camera with a zoom lens having such a configuration will be described with reference to the flow chart shown in FIG.

First, the line-of-sight direction detecting section 5 is intermittently operated so that the line of sight of the photographer is the LED 4b (telephoto side) of FIG. 1 (b).
It is determined whether or not the user is gazing at (step S11). In this determination, if the LED 4b (tele side) is not being watched (NO), it is determined whether the LED 4a (wide side) is being watched. If it is determined that the LED 4a (wide side) is not being watched (NO), the zooming operation is not performed and the 1st release switch 37 is kept on (step S14).

The LED 4b is determined by the determination in step S11.
If the user is watching the (tele side) (YES), the process proceeds to step S23, and it is determined that the zooming operation is desired on the tele side (long focal length). Further, when the LED 4a (wide side) is being watched in the determination in step S12 (YES), the process proceeds to step S30, and it is determined that the zooming operation is desired on the wide side (near focal length). .

Then, in step S11, when the zooming operation is desired on the (tele side) (YES), the DC power source as shown in FIG. 6 (c) is sent to the LED, and the LED 4b is turned on as shown in FIG. 6 (a). The light is turned on and displayed to the photographer (step S23), the line-of-sight direction is correctly detected, the motor 34 rotates in a predetermined direction, and the zoom lens 3 is zoomed to the tele side by a predetermined amount (step S24).

Then, it is determined whether or not the telephoto side has been fully zoomed (tele end fmax) (step S2).
5) If the tele end is reached (YES), a warning is given (step S26), zooming is stopped (step S27), and the process returns to step S11.

As for the above-mentioned warning, the LED 4b is shown in FIG.
As shown in Fig. 6, it changes from lighting to blinking.
As shown in (d), the LED has a duty of 50 at 2 Hz.
Driven intermittently in%. With this warning, the photographer
Let the telephoto side know that you cannot zoom. On the other hand, in step S25, when zooming is still possible (NO), the first release switch 37 waits for ON, and if it is turned ON (YES), it is determined that shooting is desired, and the zooming operation is stopped (step S25).
29) and the process proceeds to step S14.

In step S12 (on the wide side)
When the zooming operation is desired to be performed (YES), FIG.
The LED 4a shown in (a) is turned on to display to the photographer (step S30), the line-of-sight direction is detected, the motor 34 is rotated in a predetermined direction, and the zoom lens 3 is zoomed to the wide side by a predetermined amount. (Step S3
1). Then, to the wide side (full end f
min) It is determined whether zooming has been performed (step S3).
2) If it reaches the wide end (YES), a warning is given (step S11), zooming is stopped (step S26), and the process returns to step S11. The warning described above is the same as that of the LED 4b.

On the other hand, in step S32, when zooming is still possible (NO), the first release switch 37 is kept on (step S35), and if it is turned on (YES), it is determined that the photographing is desired, and the zooming operation is performed. Is stopped (step S36), and step S14
Move to.

Then, when the process proceeds to step S14, the CP
Under the control of I1, distance measurement is performed (step S14), and photometry is performed (step S15). The distance measurement and photometry are performed by operating the AF circuit 30 and the IF circuit 31 shown in FIG.

Next, it is determined whether or not the second release switch 38 is turned on (step S16), and if it is not turned on in this determination (NO), it is determined whether or not the 1st release switch 37 is turned on. (Step S
22). In step S22, the 1st release switch 37
If is turned on (YES), the process proceeds to step S16 to wait for the second release switch 38 to be turned on. However, if the 1st release switch 37 is turned off (NO), the process returns to step S11. This is a case where the photographer releases the release button and interrupts photographing due to a composition change or the like.

Next, in step S16, when the second release switch 38 is turned on (YES), focusing is performed (step S17).

Then, in the case of the system equipped with the vibration detecting section 40 for detecting the vibration of the camera shown in FIG. 3, the predetermined focal length fT1 is compared with the limited focal length f of the zoom lens (step). S18). By this comparison, when it is on the long focal length side (YES), it is determined that the frequency of camera shake is high, and vibration detection is performed (step S19).

As a result of the vibration detection, when the vibration detection amount m ≧ the predetermined amount m ₀ (NO), the process returns to step S19 and waits until the vibration is stopped. However, when the vibration detection amount m <the predetermined amount m ₀ (YES), exposure is performed (step S2).
1).

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

In this vibration detection, in FIG. 3, the line-of-sight direction detection unit 5 is provided separately, but the line-of-sight direction detection unit 5 may be used. That is, since the photographer is gazing at the main subject after the second release switch 38 is turned on, the vibration may be detected based on the magnitude of the temporal change of the line-of-sight direction detection signal. That is, by using the configuration described in FIG. 2 and processing the output as in the sequence shown in FIG. 5, the line of sight after the generation of the exposure signal (shooting timing signal) that is turned on by pressing the 2nd release switch 38 The direction detector 5 is used as a vibration detector. As a result, the camera of this embodiment can be provided without increasing the number of constituent members and without increasing the cost while preventing camera shake.

First, it is determined whether or not the second release switch 38 is turned on (step S131), and when it is turned on (YES), the line-of-sight direction detection unit 5 is switched to the function of the vibration detection unit of the camera.

Next, the counter is reset (step S1
32), the output D1 is read from the line sensor. Then, the counter starts counting, and when the predetermined time t ₀ is reached (steps S134 and S135), the output D2 is read from the line sensor (step S126). Then, the read outputs D1 and D2 of the line sensor are subtracted to obtain an absolute value, and a vibration detection amount m representing the vibration of the camera is obtained (step S137).

The vibration detection amount m obtained here is the vibration detection amount m if the camera and the photographer are not moving.
It becomes “0”, and the larger the movement (sway), the larger the vibration detection amount m.

Next, referring to FIG. 7, as a second embodiment, a more easy-to-use camera having four display LEDs 4a, 4b, 4c and 4d in the finder will be described.

These LEDs 4a and 4b are used for low speed control of each zooming operation on the wide side and the tele side, and
Reference numerals c and 4d are variable speed zooms for high speed control of the zooming operation.

The variable speed zoom operation of such a camera will be described with reference to the flowchart shown in FIG.

First, it is determined whether or not the LED 4a is being gazed (step S41). If the LED 4a is being gazed at this determination (YES), zooming operation is performed to the wide side at low speed (step S42), and the LED 4a If it is not being watched (NO), it is determined whether the LED 4c is being watched (step S43).

If it is determined in step S43 that the LED 4c is focused (YES), the zooming operation is performed to the wide side at high speed (step S44), but if the LED 4c is not focused (NO), the LED 4b is focused. It is determined whether or not there is (step S45).

According to the determination in step S45, the LED 4b
Is being watched (YES), zooming operation is performed to the tele side at low speed (step S46), but LED4b
If is not watched (NO), it is determined whether the LED 4d is watched (step S47).

According to the determination in step S47, the LED 4d
If is being watched (YES), the zooming operation is performed to the tele side at high speed (step S48). After performing the above zooming operation, it is determined whether or not the first release switch 37 is turned on, and if it is off (NO), step S4
Returning to step 1, if it is turned on (YES), distance measurement is performed (step S50), and then the process proceeds to step S15 in FIG.
Do the same. However, low speed,
There is a difference in high-speed zooming, and step S24 in FIG.
In S31, the portion corresponding to the step of the zooming operation is deformed according to the speed.

That is, in the subroutine of step S42, the zooming operation to the wide side is performed once every predetermined time.
In contrast to the movement in 0 mm increments, in the subroutine of step S44, the zooming to the wide side is performed in 30 mm increments in a predetermined time. Similarly, in step S46, zooming to the tele side is set to 10
mm in steps, and in step S47, zooming to the tele side is performed in steps of 30 mm. This allows the photographer to perform a more detailed and quick zooming operation.

Next, a camera with a zoom lens as a third embodiment of the present invention will be described. The camera of this embodiment has the same configuration as that shown in FIG.
2 is closed (turned on), the embodiment shown in FIG.
Since useless current consumption and the like flow through the line-of-sight detection LED shown in (a), the photographer performs the line-of-sight direction detection after pressing the release button halfway.

The operation of the camera thus configured will be described with reference to the flow chart shown in FIG.

First, it is determined whether or not the first release switch 37 is on (step S60). If it is not turned on in this determination (NO), the line-of-sight direction detection unit 5 does not operate. When turned on (YES), the line-of-sight direction detection timer t
Is reset (step S61), and distance measurement and photometry are performed (steps S62 and S63).

Next, it is determined whether or not the second release switch 38 is on (step S64), and if it is on (YE
S), it is determined that the photographer does not perform the zooming operation, and after focusing (step S65), exposure is performed (step S66), and the photographing ends.

However, if the second release switch 38 is off in step S64 (NO), it is determined whether or not the first release switch 37 is still on (step S67), and if it is in the on state (YES), 2nd
It waits until the release switch 38 is turned on, and if it is off (NO), the display LED 4a in the finder,
4b is turned on (step S68), and the line-of-sight direction detection unit 5
Is activated.

Then, in this lighting state, the LEDs 4a, 4
When the photographer gazes at any one of b, the LED to gaze is determined (steps S69 and S72). Further, the LED of the person who is not gazing at the photographer is turned off (steps S70 and S7).
3) It is easier for the operating side to recognize. Next, a predetermined amount of zooming is performed to the tele side and the wide side (steps S71 and S74).

Next, it is determined whether or not the 1st release switch 37 is turned on (step S75), and if it is turned on (YES), distance measurement and photometry are performed (step S).
77, S78) and the process proceeds to step S64.

However, in the determination in step S75, the first
If the release switch 37 is not detected to be on (N
O), operation time t is determined whether exceeds a predetermined time t ₀ which is set in advance (step S76), if the operation time t is less than the predetermined time t ₀ (NO), the process returns to step S69, the operation time If t has passed the predetermined time t ₀ (YE
S) Then, in order to save labor, the process returns to step S60 to turn off the line-of-sight direction detection unit 5.

When the zooming operation is performed again, the release button is pressed and the 1st release switch 3 is pressed.
7 should be turned on.

Further, by making the line-of-sight direction detecting sensor 25 described in FIG. 2 capable of two-dimensional detection, as shown in FIG. 10, the LED 4e arranged in the viewfinder is provided.
It is also possible to detect whether or not the photographer has gazed at or the LED 4f.

If the exposure is performed when the LED 4e is watched, it is possible to prevent camera shake caused by vibration when the release button of the conventional camera is pushed. However, in a sequence in which exposure is performed only by looking at one point in the viewfinder, there is a possibility that a photograph may be mistakenly taken. Therefore, the flowchart shown in FIG. 11 is used and the 1st release switch 37 is turned on. In this state, the exposure is performed only when the LED 4e is watched. That is, in the embodiment shown in FIG. 11, it is basically assumed that there is a release switch manually operated as in the conventional case.

First, it is determined whether or not the LED 4a is being watched (step S81). If the LED 4a is being watched (YES), a zooming operation is performed on the wide side (step S82), and if not being watched. (NO), LE
It is determined whether or not D4b is being watched (step S8).
3). If it is determined in step S83 that the LED 4b is being watched (YES), a zooming operation is performed on the tele side (step S84).

Next, it is determined whether or not the 1st release switch 37 is in the on state (step S85), and if it is off (NO), the process returns to step S81, and if it is in the on state (YES), distance measurement ( In step S86, photometry is performed (step S87), and focusing is performed (step S).
88).

Next, it is determined whether or not the LED 4e is gazing (step S89), and if it is not gazing (N).
O) It is determined whether or not the second release switch 38 is turned on (step S91), and if the LED 4e is watched (YES), exposure is performed (step S90).

At step S91, if the second release switch 38 is off (NO), the first release
It is determined whether the release switch 37 is turned on,
If it is on (YES), the process returns to step S89 to stand by, and if the 1st release switch 37 is off (NO), it is determined that the photographer has released the release button, and the process returns to step S81. In step S91
In, if the second release switch 38 is turned on (YES), the process proceeds to step S90 to perform exposure.

The LED 4f shown in FIG. 10 has a function of starting the self-timer.
A camera in which the LED 4f starts blinking and the release is expired after a predetermined time can be manufactured by the same idea.

By providing a function capable of a release (exposure) operation by such line-of-sight detection, when the camera is placed on an unstable place without being fixed to a tripod or the like and self-photographing is performed, it is not necessary. It is possible to prevent the composition from being disturbed by touching the release button.

Next explained is a camera with a zoom lens as a fourth embodiment of the invention. This camera is
The zooming operation as shown in 2 is variable in steps. LEDs 4g, 4h, 4i, 4j are LED displays showing numerical values of focal lengths, and LEDs 4a, 4b
Are LEDs for wide side display and tele side display, respectively, as shown in FIG.

In this embodiment, the LEDs 4a, 4b are
Fine-tune the zooming operation with the LEDs 4g, 4h,
The rough adjustment can be performed by 4i and 4j, and by focusing on the numerical display, zooming corresponding to the focal length is performed.

FIG. 13 is a flow chart showing the operation of such a camera, which will be described. First, it is determined whether or not the user is gazing at the LED 4g (step S101). L
If you are watching ED4g (YES), LED4g
Blinking (step S102), zooming operation of 30 mm is performed (step S103), and when the operation is completed, L
The ED 4g is turned on (step S104).

Hereinafter, in the LEDs 4h, 4i and 4j,
Similarly, zooming operations of 50 mm, 70 mm, and 90 mm are performed (steps S105 to 116). And LED
When gazing at 4a and 4b, zooming operation is performed to the wide side or the tele side (steps S117 to S12).
0).

After the above-mentioned zooming operations are completed,
It is determined whether or not the 1st release switch 37 is on (step S121), and if it is off (NO), the process returns to step S101, and if it is on (YES), distance measurement is performed (step S122). Then, the process proceeds to step S15 of 4 for processing.

As described above, the camera with a zoom lens according to the present embodiment can take a photograph in focus without missing a photo opportunity.

Further, the present invention is not limited to the above-described embodiments, and it goes without saying that various modifications and applications can be made without departing from the scope of the invention.

[0089]

As described above in detail, according to the present invention, it is possible to provide a camera with a zoom lens, which is small in size, has good operability, and has reduced vibration of the camera during photographing.

[Brief description of drawings]

1A is a diagram showing a conceptual configuration of a camera with a zoom lens as a first embodiment according to the present invention, and FIG. 1B is a character display provided in a viewfinder. It is a figure which shows arrangement | positioning of (LED) 4a, 4b, and FIG.1 (c) is a flowchart for demonstrating the zooming operation of the camera with a zoom lens.

2A is a diagram showing a schematic configuration of a finder optical system of a camera in which the line-of-sight direction detecting unit shown in FIG. 1A is incorporated, and FIG. It is a figure which shows the output characteristic of the line sensor contained in a gaze direction detection part.

FIG. 3 is a block diagram showing the configuration of a camera equipped with the line-of-sight direction detection unit shown in FIG.

FIG. 4 is a flowchart for explaining an operation of the camera with a zoom lens shown in FIG.

FIG. 5 is a flowchart for explaining vibration detection.

FIG. 6 is a diagram showing an arrangement of LEDs in a finder and a voltage waveform applied to the LEDs.

FIG. 7 is a diagram showing a configuration in a finder of a camera with a variable speed zoom lens as a second embodiment according to the present invention.

FIG. 8 is a flowchart for explaining the operation of the camera with a variable speed zoom lens according to the second example.

FIG. 9 is a flow chart for explaining the operation of a camera with a zoom lens as a third embodiment according to the present invention.

FIG. 10 is a diagram showing an arrangement of LEDs arranged in a finder.

FIG. 11 is a flowchart for explaining the operation of the camera capable of exposure by the line of sight.

FIG. 12 is a diagram showing a viewfinder arrangement of a camera with a zoom lens in which a zooming operation is changed stepwise as a fourth embodiment of the present invention.

FIG. 13 is a flow chart for explaining the operation of the camera with a zoom lens in which the zooming operation is changed stepwise as a fourth embodiment of the present invention.

[Explanation of symbols]

1 ... One-chip microphone computer (CPU), 2 ...
Zoom control unit, 3 ... Zoom lens, 4a, 4b ... Character display (LED), 5 ... Line-of-sight direction detection unit, 6 ... Eyes, 7
... Gaze continuation presence / absence detection unit, 8 ... Gaze time measurement unit (timer), 20 ... Objective lenses 21, 23 ... Half mirror,
22 ... Eyepiece lens, 24 ... Light emitting diode, 25 ... Line sensor, 26 ... First imaging lens, 27 ... Second imaging lens, 28 ..., 29 ..., 30 ... Autofocus (AF)
Circuit, 31 ... Interface (IF) circuit, 32 ... Sensor, 33 ... Motor driver, 34 ... Motor, 35 ... Encoder, 36 ... Finder, 37 ... 1st release switch, 38 ... 2nd release switch 39 ... Main switch.

─────────────────────────────────────────────────── ─── Continuation of the front page (51) Int.Cl. ⁵ Identification code Internal reference number FI technical display location G03B 17/20 7256-2K

Claims (2)

[Claims] 1. A display unit provided in a viewfinder for displaying a functional mode for driving a photographing optical system to a desired focus position by a character that can be visually recognized, and a desired one of the characters being watched. A line-of-sight direction detecting means for detecting the line-of-sight direction of the photographer, and measures the time during which the photographer gazes at a desired one of the characters after the line-of-sight direction is detected by the line-of-sight direction detecting means. Gaze time measuring means, drive control means for controlling the photographing optical system to be driven to a desired focal position based on the outputs of the gaze direction detecting means and the gaze time measuring means, A camera with a characteristic zoom lens. 2. Display means provided in the viewfinder for displaying a functional mode for driving the photographing optical system to a desired focus position by a character that can be visually recognized, and a desired one of the characters being watched. A line-of-sight direction detection means for detecting the line-of-sight direction of the photographer, and after the line-of-sight direction is detected by the line-of-sight direction detection means, it is detected that the photographer continues to gaze at a desired one of the characters. Gaze continuation presence / absence means, and drive control means for controlling the photographing optical system to be driven to a desired focus position only when the gaze continuation presence / absence means outputs. A camera with a zoom lens.