JPH10142477A - Observation optical device - Google Patents

Abstract

PROBLEM TO BE SOLVED: To calculate an accurate diopter adjustment quantity not through two independent operations for automatic focusing and diopter adjustment, but only one operation by calculating the deviation quantity between a lens position and a focus position from a range finding result, and storing the deviation quantity as the diopter adjustment quantity. SOLUTION: Light having passed through a range-finding optical system is made incident on a CCD sensor 12. According to the signal obtained from the CCD sensor 12, a controller 13 calculates the position of a focusing lens and sends driving signals to motors 15 and 16. When a diopter adjustment mode switch 35 is ON, the controller 13 performs focus detection according to the signal of the CCD sensor 12 and calculates a defocusing quantity(DF). The calculated DF is multiplied by a conversion coefficient K (converted into the number of pulses) to find TP. Then the difference between a current lens position and TP is inputted as a current diopter adjustment quantity to a memory.

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to an observation optical device such as a binocular or a telescope.

[0002]

2. Description of the Related Art In an observation optical apparatus having an autofocus function, when a diopter adjustment amount is electrically stored in a memory, the diopter adjustment amount is determined when the focus detection is accurately performed on a certain observation object. Lens position (determined by driving the lens by autofocus or determined by distance measurement)
There is a method of calculating the amount of deviation from the lens position when the lens is in focus for the user. When using this method, if the observation object to be subjected to accurate focus detection and the observation object to be focused by the user are different,
Since the distance to the subject is different, an accurate diopter adjustment amount cannot be calculated.

FIG. 18 shows a specific example. As a first operation, the position 42 of the in-focus lens 41 whose focal point is located at the predetermined focal plane 40 with respect to the observation object A is detected by autofocusing (FIG. 18A). As a second operation, a lens position at which the user is focused on the observation body A is detected. As a result, it is assumed that the state in which the lens 41 is at the position 43 in front of the in-focus position 42 as shown in FIG. In this case, lens positions 42 and 43
Is calculated as the diopter adjustment amount. Of course, the first
Either of the operation and the second operation may be performed first.

[0004] However, if the first operation is performed on an observation object B different from the second operation, the distance between the observation object A and the observation object B is different. Unlike FIG. 18C, it becomes 44 as shown in FIG.
In this case, the calculated diopter adjustment amount DFB is an incorrect value.

In order to avoid such a situation, in the prior art, a user performs an auto-focus operation on an observation object, and then moves the lens to a position where the same observation object is in focus. Some operations are premised on performing a diopter adjustment operation). Then, the driving amount of the lens when the diopter adjustment operation is performed is stored in the memory as the diopter adjustment amount.

[0006]

However, in the above-mentioned prior art, two operations of an autofocus operation and a diopter adjustment operation are required as operations for calculating the diopter adjustment amount.

SUMMARY OF THE INVENTION It is an object of the present invention to provide an observation optical device in which an accurate diopter adjustment amount is calculated by a simple operation.

[0008]

In the observation optical apparatus according to the present invention, a distance measuring means which a user uses a diopter adjusting means, and a shift amount between a lens position and a focus position based on the result of the distance measurement. A configuration is provided that includes a calculating means for calculating and a storage means for storing the deviation amount as a diopter adjustment amount.

With this configuration, each time the user adjusts the diopter, the distance is measured, and the diopter adjustment amount (the amount of deviation) is calculated based on the result, and this value is stored in the memory. . In this way, the diopter adjustment amount is calculated without requiring an autofocus operation. Therefore, since only one operation is required instead of two independent operations of the autofocus operation and the diopter adjustment operation, a situation in which the user is pointed to a different observation object does not occur.

[0010]

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS A first embodiment of the present invention will be described below with reference to FIGS. 1 to 8 and FIG. FIG. 1 is an external top view of the binoculars 1 of the present embodiment, and FIG. 2 is a layout diagram illustrating a schematic internal configuration of the binoculars 1 of the present embodiment. Note that the first embodiment shows binoculars whose distance measurement method is an external light method,
Of course, the TTL type may be used.

The binoculars 1 include an operating member 14 for a main switch (SM) between the upper cover 2 of the right lens barrel and the upper cover 3 of the left lens barrel, and focusing lenses 4, 5 on the upper cover 2 of the right lens barrel. Operation button 6 of a manual focus infinity direction switch (SF) for adjusting the infinity direction, operation button 7 of a manual focus near side direction switch (SN) for adjusting the focusing lenses 4 and 5 to the near side, and auto focus (AF). And an operation button 8 of an auto focus switch (SAF) which is turned on in the case of (1). In this specification, the infinite direction with respect to the lens position refers to the direction on the user side (that is, the direction in which the eyepiece optical systems 9 and 10 are present), and the direction opposite to the near side (that is, the direction on the observation body side).

The operating member 14 is provided with a main switch O
It is a three-position type operation member having an adjustment position (MEN) for setting a diopter adjustment mode described later in addition to the N and OFF positions. The distance measuring optical system 11 is disposed between the two focusing lenses 4 and 5, and light passing through the distance measuring optical system 11 is transmitted to the CCD sensor 1.
2, the controller 13 controls the focusing lenses 4, 5 based on signals obtained from the CCD sensor 12.
Is calculated, and drive signals are sent to the motors 15 and 16.
The motors 15 and 16 are constituted by pulse motors.

The driving force of the motors 15 and 16 is
The light is transmitted to the focusing lenses 4 and 5 via the arms 7 and 18 and the arms 19 and 20. That is, the rotation of the motors 15 and 16 causes the focusing lenses 4 and 5 to move in the optical axis direction. When the right eyepiece optical system 9 is rotated, the right eyepiece optical system 9 moves back and forth, thereby focusing the right eye. The light incident on the focusing lenses 4 and 5 is given to the eyepiece optical systems 9 and 10 via the image erecting systems 21 and 22.

The operation of the user in this embodiment includes a diopter adjustment operation, a diopter memory operation, an autofocus operation,
There is manual focus operation. The operation method of the user and the movement of the lens at that time will be described with reference to FIG. In the diopter adjustment operation, first, the operation member 14 for the main switch is set to the MEM position. At this time, the focusing lenses 4 and 5 are set at a predetermined position 50 (FIG. 17).
(A)).

When the focusing lenses 4 and 5 are driven in the infinite direction, the operation button 6 of the manual focus infinity direction switch is pressed, and when the focusing lenses 4 and 5 are driven in the near direction, the operation button 7 of the manual focus near side switch is operated.
By pressing, the user sets the focusing lenses 4 and 5 at a position where the left eye is in focus with respect to a certain observation object. This position is assumed to be 51 as shown in FIG. At this time, the controller 13 of the binoculars 1 automatically measures the distance and detects the actual focus position 52. Then, the difference between the in-focus position 51 and the actual focus position 52 for the user is calculated as the diopter adjustment amount (SIDO).

When the left eye focuses first, the left and right motors 15 and 16 are driven simultaneously, so that both the left and right focusing lenses 4 and 5 move to the same position 51. However, if there is a left-right difference in diopter, the right eye is out of focus. Therefore, the user rotates the right eyepiece optical system 9 to rotate the right eyepiece optical system 9.
Move only the camera so that the right eye is in focus. Assume that the position of the right eyepiece optical system 9 at that time is 53 as shown in FIG. The operation of the user so far is the diopter adjustment operation.

The diopter memory operation is an operation simply by pressing the operation button 8 of a diopter adjustment memory mode switch (also used as an autofocus switch as described later).
Thereby, the diopter adjustment amount (SIDO) is stored in the memory.

A case where an object is observed by an autofocus operation will be described. First, the operation member 14 for the main switch is set to the ON position. Then, the operation button 8 of the auto focus switch is pressed. In synchronization with this, the controller 13 measures the distance and detects the focus position 54 (FIG. 17).
(D)). Then, the focusing lenses 4 and 5 are moved to the position 55 corrected by the diopter adjustment amount (SIDO) stored in the memory.

Since the eyepiece optical systems 9 and 10 are not moved by the autofocus operation, the positional relationship shown in FIG. 17C is maintained. As described above, according to the autofocus operation, the focus adjustment according to the diopter of the user is automatically performed. FIGS. 17C and 17D show a second embodiment described later.

When performing a manual focus operation,
The user himself / herself presses the operation button 6 of the manual focus infinite direction switch and the operation button 7 of the manual focus near side direction switch to move the focusing lenses 4 and 5 back and forth, and focuses on the observation body for observation.

Next, FIG. 3 shows the controller 1 of this embodiment.
3 is a detailed circuit configuration diagram centering on FIG. The controller 13 is connected with a drive circuit 28 for the motors 15 and 16, the CCD sensor 12, and various switches. The switches include a main switch 34, a diopter adjustment mode switch 35, an auto focus switch 33, a manual focus infinite direction switch 29, and a manual focus near side switch 30 as well as motors 15 and 16.
End detection switch 3 for giving a reference position related to
1, 32 are connected.

The main switch 34 is turned on when the operation member 14 for the main switch is operated to the ON position and the MEN position. The diopter adjustment mode switch 35
Turns ON when the operation member 14 for the main switch is operated to the MEM position, and enters the diopter adjustment mode.

Here, the auto focus switch 33 functions as an auto focus switch when the main switch 34 is ON and the diopter adjustment mode switch 35 is OFF. When the main switch 34 is ON and the diopter adjustment mode switch 35 is When it is ON, it functions as a diopter memory mode switch.

Next, the operation control by the controller 13 of the present embodiment will be described with reference to the flowcharts of FIGS. An auto focus mode flag (AF described later)
F), manual focus infinite direction flag (FF),
The manual focus near-side flag (NF) and the clockwise flag (CWF) are prepared inside the controller 13 although not shown.

First, in the main routine of FIG. 4, when a reset is started, the controller 13 proceeds to step #.
In step 2101, various data are initialized. Then, in step # 2102, the main switch 34 is turned on (SM =
0), and if ON, set the focusing lenses 4 and 5 to a predetermined position (in this embodiment, a position shifted from the optical infinity position by the current diopter adjustment amount) in step # 2103. I do. Note that the current diopter adjustment amount (SI
DO (0)) will be described later with reference to FIG. Here, the main switch 34 is turned ON when the operation member 14 for the main switch 34 is ON or in the MEM position.

Next, at step # 2104, it is again determined whether or not the main switch 34 is ON. If it is ON, the process proceeds to step # 2105, and the diopter adjustment mode switch 35 is turned ON.
It is determined whether or not N (SSM = 0). If it is ON, the process proceeds to the dioptric adjustment mode processing routine P1 (FIG. 5).

If the diopter adjustment mode switch 35 is OFF in step # 2105, the flow advances to step # 2106 to determine whether or not the auto focus switch 33 is ON (SAF = 0). If ON, step # 2107 To enter the auto focus mode. Step # 21
At 07, the manual focus infinite direction flag and the manual focus near side direction flag are set (FF = 1, N
F = 1) is determined, and if it is set, the process proceeds to step # 2126 to reset these flags. If not set, the flow advances to step # 2108 to set the auto focus mode flag.

Thereafter, the CCD sensor 12 is driven to read the signal of each pixel (step # 2109). And
In step # 2110, focus detection is performed based on this signal to calculate a defocus amount (DF) indicating a focus shift amount, and to output low-contrast information when focus detection is not possible. This DF is signed, and is positive on the short distance side and negative on the infinity side.

Next, it is determined in step # 2111 whether or not the contrast is low. If it is determined that the contrast is low, the flow returns to step # 2104 without driving the lens. If the contrast is not low, the process proceeds to step # 2112, multiplies the DF calculated in step # 2110 by the conversion coefficient K to obtain TP, and proceeds to step # 2113. This TP is a value obtained by converting the in-focus position of the focusing lenses 4 and 5 into the number of pulses of the motors 15 and 16 for driving the focusing lenses 4 and 5.

Next, in step # 2113, the PCNT indicating the current position of the focusing lenses 4 and 5, the diopter adjustment amount (SIDO) stored in the memory in the routine P1 shown in FIG. Using the TP representing the in-focus position, the lens drive amount (P) up to the in-focus position is obtained by the following equation. In addition, PCNT, SIDO, T
Since P is a value represented by the number of pulses of the motors 15 and 16, the drive amount P is also calculated by the number of pulses.

P = PCNT-TP + SIDO

Next, in step # 2114, the lens drive amount (P) falls within a predetermined focusing range (PO
(Smaller than K), and if within the focusing range, there is no need to drive the motor, so the flow returns to step # 2104. If not within the focusing range, the process proceeds to step # 2115,
In the motor drive subroutine (FIG. 6), the motor 1
5 and 16 are driven. Here, the focusing lenses 4 and 5 are driven to a position where the user is in focus. Thereafter, the flow returns to step # 2104.

When the auto focus switch 33 is OFF in step # 2106, first, in step # 21
The auto focus mode flag is set (A
It is determined whether or not FF = 1) has been set, and if it has been set, the auto focus mode flag is reset in step # 2126.

If the auto focus mode flag has not been set in step # 2116, the manual focus near side switch 3 is set in step # 2117.
It is determined whether or not 0 is ON (SN = 0). If it is ON, it is further determined in step # 2118 whether or not the manual focus infinity direction flag is set (FF = 1). If so, the flow advances to step # 2126 to reset the manual focus infinity direction flag.

If the manual focus infinity direction flag is in the reset state in step # 2118, step #
Then, the flow advances to step 2119 to set the manual focus near-side flag and reset the clockwise flag so that the motor is driven to the near side in step # 2120 (CWF
= 0), and sets the drive amount (P) (step # 212)
1), the process proceeds to step # 2115 to perform a motor driving subroutine.

If the manual focus near side switch 30 is OFF in step # 2117, step # 2
Proceeding to step 122, it is determined whether or not the manual focus infinite direction switch 29 is ON (SF = 0). OF
If F, the process proceeds to step # 2126 to reset the manual focus infinite direction flag and the manual focus near side flag.

If the manual focus infinite direction switch 29 is ON in step # 2122, step # 21
Proceeding to 23, it is determined whether or not the manual focus near-side flag is set (NF = 1). If it is set, the process proceeds to step # 2126 to reset the manual focus near-side flag.

If the manual focus near direction flag is reset in step # 2123, step # 2
Proceeding to 124, the manual focus infinity direction flag is set, and in step # 2125, the clockwise flag is set so that the motor moves in the infinity direction (CWF =
1), and further sets the drive amount (P) (step # 21)
21), and proceeds to step # 2115 to perform a motor driving subroutine. Note that the drive amount (P) set in step # 2121 is a predetermined value different from the drive amount (P) calculated by step # 2113.

In any case where the flag is reset in step # 2126, the process proceeds to step # 2127, in which the driving amount (P) is set to 0 to stop the motor, and the motor driving subroutine in step # 2115 is performed. It returns to step # 2104.

FIG. 5 shows a processing routine P for the diopter adjustment mode.
It is one. First, in step # 2201, it is determined whether the auto-focus switch 33 is ON or OFF. If it is OFF, the flow advances to step # 2202 to determine whether the manual focus near-side switch 30 is ON or OFF. If it is ON, the process proceeds to step # 2207, where the driving direction is set to the near side (CWF = 0), the driving amount (P) of a predetermined value is set at step # 2205, and the motor driving subroutine is performed at step # 2206. .

If the manual focus near side switch 30 is OFF in step # 2202, step #
Proceeding to 2203, ON / OFF of the manual focus infinite direction switch 29 is determined. If it is ON, the process proceeds to step # 2204, and the drive direction is set to the infinite direction (CWF
= 1), and in step # 2205, a predetermined amount of drive amount (P)
Is set, and a motor driving subroutine is performed in step # 2206.

If the auto focus switch 33 is ON in step # 2201, the diopter memory mode is entered, and in step # 2208, the current diopter adjustment amount (SIDO)
(0)) is stored in the diopter adjustment amount (SIDO) of the memory. It should be noted that SIDO (0) corresponds to step # 25 in FIG.
06. Routine P1 of diopter adjustment mode
Is completed, step # 210 of the main routine of FIG.
Return to 4.

Next, the motor driving subroutine shown in FIG. 6 will be described. This subroutine is performed in step # 2115 of the main routine in FIG. 4 and in step # 2206 of the processing routine P1 in the diopter adjustment mode in FIG. 5. Here, the motor interrupt processing is performed according to the set driving amount (P) and driving direction. Make the settings for

First, interrupts are prohibited (step # 23).
01), determine the previously set drive direction. If the direction is infinite (CWF = 1), the process proceeds to step # 2308, and the infinite direction flag in the interrupt processing circuit is set (MF = 1). If in the near direction, step # 230
Proceed to 3 to set the near direction flag in the interrupt processing circuit (KF = 1).

Next, the previously set driving amount (P) is set as the driving amount (MOVP) in the interrupt processing circuit (step # 2304). And the motors 15, 1
The information of the position 6 is output to the port as the first pulse (step # 2305). At the same time, the timer is started until the second pulse is output (step # 2306)
The interruption is permitted (step # 2307). The second pulse is a pulse that drives the motors 15 and 16 in infinite or near directions, but is determined based on information of the first pulse. The third and subsequent pulses are sequentially output according to the set time of the timer. It should be noted that the second pulse is output at a step in a routine of an interrupt process described below with reference to FIG.

When the interruption is permitted in FIG. 6, the routine of the motor interruption processing of FIG. 7 is performed. In the motor interrupt processing routine, drive signals are sent to the motors 15 and 16 in accordance with the direction and drive amount set in the motor drive routine of FIG. First, in step # 2401, interruption is prohibited, and it is determined in step # 2402 whether MOVP = 0. If MOVP = 0, M is set to MOVP
OVP-1 is set (step # 2403). Here, since the motors 15 and 16 are driven by one pulse in a later step, the value of MOVP is rewritten in advance.

In step # 2404, it is determined whether or not the near side flag is set. If it is set, PCNT + 1 is set in PCNT in step # 2409, and in step # 2410, the focusing lens 4 is moved in the near side. 5, the pulse data of the rotation of the motors 15 and 16 in the moving direction is set.

If the near direction flag is not set in step # 2404, PCNT is set in step # 2405.
In step # 2406, pulse data for rotating the motors 15, 16 in the direction in which the focusing lenses 4, 5 move in the infinite direction is set. Then, step # 230 in the motor drive routine
When the timer started at 6 finishes counting,
The pulse set in step # 2410 or # 2406 is output to the port as a second pulse (step # 2407). At the same time, the timer starts counting the time until outputting the next pulse. The motor is driven by outputting a pulse to the port in step # 2407 and waiting for a sufficient time for driving the motor (here, the timer counts the time).

Then, in step # 2408, the interruption is permitted. As long as there is no interruption after permitting the interruption, until MOVP = 0 in step # 2402, FIG.
Is repeatedly performed. If MOVP = 0 in step # 2402, the flow shifts to the distance measurement processing routine P3 shown in FIG. First, Step # 2
In step 501, the output to the port is turned off, and the ON / OFF of the diopter adjustment mode switch 35 is determined (step # 2).
502). If OFF, jump to P4.

If the diopter adjustment mode switch 35 is ON, the CCD sensor 12 is driven in step # 2503 to read the signal of each pixel, focus detection is performed based on the signal, and the flow advances to step # 2504 to set the focus. A defocus amount (DF) indicating a shift amount is calculated. The calculated DF is multiplied by a conversion coefficient K (converted to the number of motor pulses) to obtain TP (step # 2505). And step # 2
Proceeding to 506, the difference between the current lens position (PCNT) and TP is taken into SIDO (0) as the current diopter adjustment amount.

SIDO (0) is updated every time step # 2506 is reached. SIDO (0) is the same as step # 2208 in the diopter adjustment mode shown in FIG.
Is stored in the SIDO. The SIDO is used in step # 2113 of the auto focus mode in FIG.

Next, a second embodiment of the present invention will be described with reference to FIGS. The circuit configuration is different from the circuit configuration of the first embodiment (FIG. 3) only in that a left / right difference adjustment switch is connected to the controller 13 and therefore will not be described. In the second embodiment, the binoculars 24 are of the TTL type as the distance measuring method, but may be of the external light type. FIG. 9 is an external top view of the binoculars 24 of the second embodiment, and FIG.
3 is a layout diagram showing a schematic configuration inside the binoculars 24. FIG. Since the configuration is almost the same as the binoculars of the first embodiment,
Hereinafter, only the differences will be described.

The binoculars 24 have an operation button 23 for a left-right difference adjustment switch on the upper cover 2 of the right lens barrel. With this operation button 23, only the motor 15 can be driven. That is, by pressing the operation button 6 of the manual focus infinite direction switch 29 and the operation button 7 of the manual focus near-side switch 30 while pressing the operation button 23, only the focusing lens 4 is driven to focus the right eye. . In the present embodiment, the right eyepiece optical system 9 is immobile.

Further, the binoculars 24 have fixed objective lenses 25 and 26 in front of the focusing lenses 4 and 5, and
Objective lens 26 of left optical system, focusing lens 5
Semi-transmissive mirror 2 for extracting a part of the light beam passing through
7 and a CCD for performing focus detection with the extracted light beam
It has a sensor 12.

The operation procedure and the movement of the lens at that time will be described with reference to FIG. 17 in comparison with the first embodiment. In the diopter adjustment operation, the operation up to focusing with the left eye and bringing the focusing lenses 4 and 5 into the state shown in FIG. 17B is the same as in the first embodiment. Here, the diopter adjustment amount is calculated, but the diopter adjustment amount calculated in the second embodiment is not actually a deviation amount of the lens position but a deviation of the intermediate image by the objective optical system as described later. Since it is calculated as the amount of deviation from the predetermined position, it is represented as DFL to distinguish it from the first embodiment.

Next, the right eye is focused. The binoculars 24 of the second embodiment can be operated only by pressing the operation button 6 of the manual focus infinite direction switch or the operation button 7 of the manual focus near-side switch while pressing the operation button 23 of the left / right difference switch, so that only the right focusing lens 4 is pressed. Is provided. Therefore, using the function, the right focusing lens 4 is moved to a position where the right eye is in focus. Assume that the position of the right focusing lens at that time is the position 56 as shown in FIG. Left and right focusing lenses 4,
The difference between the positions 51 and 56 of No. 5 is the left and right difference diopter adjustment amount (SIDO
R).

Then, the operation button 24 of the diopter memory switch
By pressing, the diopter adjustment amount (DFL) is stored in the memory. During the autofocus operation, the difference between the positions of the left and right focusing lenses 4 and 5 is set to a state after the diopter adjustment operation. When the operation button 8 of the autofocus switch is pressed, the focus position 54 is detected by the controller 13 as shown in FIG. 17D as in the first embodiment. Then, the left focusing lens 5 is driven from the position 54 to a position 55 corrected by the diopter adjustment amount (DFL). At this time, the right focusing lens 4 is also driven by the same amount as the left focusing lens 5, so that the left and right difference of SIDOR is maintained.

Next, the operation of the second embodiment will be described based on a flowchart of operation control by the controller 13. FIG. 11 shows a main routine, which is also substantially the same as the main routine of the first embodiment. The difference is that the diopter adjustment amount (DFL) is not stored as the number of pulses of the motors 15 and 16, but the shift amount of the intermediate image by the objective optical system, that is, the in-focus position of the image projected on the CCD sensor 12. Is stored as the deviation amount from the defocus amount (D) obtained in step # 5110.
The point is that the focus determination can be performed in step # 5112 without converting F) into the number of pulses of the motors 15 and 16. After that, when out of focus, the drive amount (P) is changed to step # 5.
At 113, the number of pulses of the motors 15 and 16 is converted using the conversion coefficient K.

If the diopter adjustment mode switch 35 is ON in step # 5105, the process shifts to the diopter adjustment mode processing routine P6 shown in FIG. In the diopter adjustment mode processing routine P6, there is a step different from that of the first embodiment because there is a left / right difference adjustment switch. First, in step # 5202, the interrupt request of the diopter memory is reset. That is, the auto focus mode flag is reset. Then, the process proceeds to step # 5203, and interruption of the processing routine INT of the diopter memory shown in FIG. 13 is prohibited.

Next, in step # 5204, it is determined whether or not the left / right difference adjustment switch is ON (SR = 0).
, The right-side drive flag (R
F) is reset (step # 5218), and in step # 5205, the manual focus near side switch 3
0 ON / OFF is determined, and if ON, step #
In step 5212, the drive direction is set to the near side, and step # 52
Proceed to 08. If the manual focus near side switch 30 is OFF in step # 5205, step #
Manual focus infinite direction switch 29 at 5206
Is turned on / off. If ON, step # 5
In step 207, the drive direction is set to the infinite side, and step # 52
Proceed to 08.

In step # 5208, a predetermined drive amount (P) is set, and in step # 5209, a motor drive subroutine is performed. The motor drive subroutine and the motor interrupt process also include steps different from those in the first embodiment, and will be described later with reference to FIGS.

If the left / right difference adjustment switch is ON in step # 5204, the drive is on the right (R) side (step R52).
Proceeding to 19, a right-side driving flag is set. Then, the same processing as the processing of the above-described steps # 5205 to # 5208 and # 5212 is performed in step # 521.
This is performed in steps 3 to # 5217. Here, since the driving direction and the driving amount for the right one side driving are set, the motor 1 on both sides is set.
The driving amount (PR) is distinguished from the driving amount (P) in the case where the driving is performed by 5 and 16. When the drive amount (PR) setting (Step # 5216) is completed, a motor drive subroutine is performed in Step # 5209.

After driving the motor, if there is no interrupt request of the diopter memory in step # 5210, that is, if the autofocus mode flag is in the reset state, step # 5210 is executed.
Go to 5211 and turn ON / O the diopter adjustment mode switch 35
Determine FF. If it is OFF, it jumps to P5, that is, step # 5102 of the main routine, and if it is ON, it returns to step # 5203.

If there is an interrupt request of the diopter memory in step # 5210, that is, if the autofocus mode flag is set, the flow shifts to routine INT (FIG. 13). The processing INT shown in FIG.
01, and waits until the motor stops.
Then, the current diopter adjustment amount (DFL (0)) is stored in the diopter adjustment amount (DFL) of the memory. And step # 530
In step 3, the current left-right diopter adjustment amount (SIDOR (0)) is stored in the left-right diopter adjustment amount (MEMOR) of the memory. Thereafter, P7, that is, step # 5104 of the main routine
Return to

Next, a motor driving subroutine shown in FIG. 14 will be described. This subroutine is performed in step # 5127 of the main routine and step # 5209 of the diopter adjustment mode. Substantially the same as the motor driving subroutine of the first embodiment shown in FIG. 6, but after setting the driving direction and before setting the driving amount to MOVP, whether or not the right one-side driving flag is set in step # 5408 Is different in that a step when set is present. If the right one-side drive flag is set, the drive amount (PR) is set to MOVP in step # 5409. If the right-side drive flag has not been set, the drive amount (P) is set to MOVP in step # 5404. The subsequent processing is the same as that shown in FIG.

The motor interrupt processing shown in FIG. 15 is almost the same as that of the first embodiment shown in FIG. 7, but it is determined in step # 5504 whether or not the right-side driving flag is set. Is different in that a step when it is set exists. If it has been set, the flow advances to step # 5512 to determine whether or not the near-side direction flag has been set.

If it has been set, the flow advances to step # 5515 to set SIDOR + 1 to SIDOR. At step # 5516, pulse data for rotating the motor 15 in the direction in which the focusing lenses 4 and 5 move toward the near side is set. Then, the process proceeds to step # 5508.

If the near side direction flag has not been set in step # 5512, then in step # 5513 the SIDO
SIDOR-1 is set in R. In step # 5514, pulse data for rotating the motor in the direction in which the focusing lenses 4 and 5 move in the infinite direction is set, and the flow advances to step # 5508. The processing from step # 5508 is the same as the processing from step # 2407 in FIG.

If the right-side driving flag is not set in step # 5504, the processing from step # 5505 is the same as the processing from step # 2404 in FIG. If MOVP = 0 in step # 5502, the flow shifts to the ranging routine P8 (FIG. 16).

The routine P8 shown in FIG.
In step 601, the port output is set to 0FF, and step #
In 5602, it is determined whether or not the diopter adjustment mode switch 35 is ON. If it is OFF, the process jumps to step # 5607. If the diopter adjustment mode switch 35 is ON, the process proceeds to step # 5603, the CCD sensor 12 is driven to read the signal of each pixel, focus detection is performed based on this signal, and the focus shift amount is determined at step # 5604. The indicated defocus amount (DF) is calculated.

Then, in step # 5605, it is determined whether or not the right one-sided flag is set. If it is set, the flow advances to step # 5606 to add SIDOR to the current left-right dioptric power adjustment amount (SIDOR (0)). Set and go to step # 5607. If the right-side driving flag has not been set, the process proceeds to step # 5608, where the current diopter adjustment amount (DFL (0)) calculated in step # 5604 is calculated.
F is set, and the flow advances to step # 5607. The DF will be updated every time step # 5608 is reached. In step # 5607, the drive-related flags are reset.
Then, the process proceeds to P9 of the interrupt processing routine of FIG.

[0072]

In the observation optical device of the present invention, the distance is automatically measured when the diopter of the user is adjusted, so that the user does not need to perform any operation for measuring the distance. Further, distance measurement is always performed with the same observation body as the observation body that has adjusted the diopter. Further, since the diopter adjustment amount is calculated based on the result, an accurate diopter adjustment amount is calculated and stored in the memory.

According to the second aspect of the present invention, the correction is performed by using the accurate diopter adjustment amount in the auto focus, so that it is possible to perform the auto focus with high accuracy according to the diopter of the user. Becomes

[Brief description of the drawings]

FIG. 1 is an external top view of binoculars according to a first embodiment.

FIG. 2 is a layout diagram showing a schematic configuration of the binoculars of FIG. 1;

FIG. 3 is a circuit diagram of the binoculars of FIG. 1;

FIG. 4 is a main routine of operation control of the binoculars of FIG. 1;

FIG. 5 is a routine of a diopter adjustment mode of the binoculars of FIG. 1;

FIG. 6 is a motor driving subroutine of the binoculars of FIG. 1;

FIG. 7 is a motor interrupt processing routine of the binoculars of FIG. 1;

FIG. 8 is a flowchart of a motor stop processing routine of the binoculars of FIG. 1;

FIG. 9 is an external top view of the binoculars according to the second embodiment.

FIG. 10 is a layout diagram illustrating a schematic configuration of the binoculars of FIG. 9;

FIG. 11 is a main routine for controlling the operation of the binoculars of FIG. 9;

FIG. 12 is a routine of a diopter adjustment mode of the binoculars of FIG. 9;

FIG. 13 is a diopter memory mode routine of the binoculars of FIG. 9;

FIG. 14 is a motor driving subroutine of the binoculars of FIG. 9;

FIG. 15 is a flowchart of a motor interrupt process of the binoculars of FIG. 9;

FIG. 16 is a flowchart of a motor stop processing routine of the binoculars in FIG. 9;

FIG. 17 is a diagram showing movement of a lens during operation.

FIG. 18 is a diagram illustrating a movement of a lens when a diopter adjustment amount is calculated in a conventional example.

[Explanation of symbols]

 1, 24 binoculars 4, 5 focusing lens 6 operation button of manual focus infinite direction switch 7 operation button of manual focus near side switch 8 operation button of auto focus switch 9, 10 eyepiece optical system 12 CCD sensor 13 controller 14 for main switch Operation members 15, 16 Motor 23 Left / right difference adjustment switch 29 Manual focus infinite direction switch 30 Manual focus near side switch 33 Auto focus switch 34 Main switch 35 Diopter adjustment mode switch

Claims (7)

[Claims] 1. A distance measuring means for automatically measuring a distance at the time of diopter adjustment performed by a user using a diopter adjusting means, and calculating a shift amount between a lens position and a focus position based on the result of the distance measurement. An observation optical apparatus, comprising: a calculation unit; and a storage unit that stores the shift amount as a diopter adjustment amount. 2. The observation optical apparatus according to claim 1, further comprising means for correcting a diopter adjustment amount stored in said storage means and driving a lens during autofocusing. 3. The observation optical apparatus according to claim 1, wherein the distance measurement is performed when the lens is stopped during diopter adjustment. 4. The observation optical apparatus according to claim 3, wherein the diopter adjustment amount is updated each time the lens stops. 5. The observation optical apparatus according to claim 1, wherein the diopter adjustment amount is represented by the number of pulses of a motor that drives a lens. 6. The diopter adjustment performed by the user using the diopter adjusting means is performed for only one of the left and right optical systems, but the focusing lenses of the left and right optical systems are both driven and the left and right optical systems are driven. 2. The observation optical apparatus according to claim 1, wherein the adjustment of the diopter difference between the optical systems is performed by adjusting an eyepiece optical system of the other optical system. 7. The diopter adjustment performed by the user using the diopter adjusting means is performed for only one of the left and right optical systems, but the focusing lenses of the left and right optical systems are both driven and the left and right optical systems are driven. 2. The observation optical apparatus according to claim 1, wherein the diopter difference between the optical systems is adjusted by adjusting a focusing lens of the other optical system.