CN103309007A - Dual-motor lens actuating device and dual-motor lens actuating method thereof - Google Patents

Abstract

The invention discloses a double-motor lens actuating device and a double-motor lens actuating method thereof. The double-motor lens actuating device comprises a first baffle, a second baffle, a first driving motor, a second driving motor, a positioning sensing element, a step number sensing unit and a microcontroller. The first blocking piece is arranged on one side of the zoom lens group, and the second blocking piece is arranged on one side of the focusing lens group. The first driving motor and the second driving motor respectively drive the zoom lens group and the focusing lens group to move. The positioning sensing element senses the positions of the first blocking piece and the second blocking piece to send out a positioning signal. The step number sensing unit senses the movement of the zoom lens group and the focusing lens group to send out step number signals. The microcontroller controls the first driving motor and the second driving motor to drive the zoom lens group and the focusing lens group to move according to the positioning signal and the step number signal.

Description

Dual-motor lens actuation device and dual-motor lens actuation method

technical field

The invention relates to a dual-motor lens actuating device and a dual-motor lens actuating method thereof, in particular to a dual-motor lens that can use a single positioning sensing element to control the zoom lens group and the focus lens group to return to the origin of the mechanism An actuating device and a dual-motor lens actuating method thereof.

Background technique

At present, most of the cameras on the market have zoom and focus functions. For the current cameras, the zoom and focus of the lens are driven and controlled by a DC motor and a stepping motor respectively. It is worth noting that the zoom lens group and the focus lens group of the conventional lens each have a position sensor to assist the zoom lens group and the focus lens group to move to the mechanical origin respectively. That is to say, the lens itself needs two positioning sensors to control the zoom lens group and the focus lens group, and the camera also needs two sets of control circuits for control. Therefore, the construction cost of the camera is high, and the power consumption is also high.

In terms of demand, designing a dual-motor lens actuation device and its dual-motor lens actuation method, which can reduce lens cost and have energy-saving effects, has become an urgent issue in market applications.

Contents of the invention

In view of the above-mentioned problems in the prior art, the object of the present invention is to provide a dual-motor lens actuation device and a dual-motor lens actuation method to solve the problems in the prior art.

In order to achieve the above object, the present invention adopts the following technical solutions:

A double-motor lens actuating device is characterized in that it comprises: a first blocking plate and a second blocking plate, the first blocking plate is arranged on one side of a zoom lens group, and the second blocking plate It is arranged on one side of a focus lens group, and the focus lens group is arranged below the zoom lens group; a first drive motor and a second drive motor, and the first drive motor and the second drive motor are respectively Drive the zoom lens group and the focus lens group to move; a positioning sensing element, the positioning sensing element senses the position of the first block and the second block to send out a corresponding A positioning signal of the first file and the second file; a step number sensing unit, the step number sensing unit senses the movement of the zoom lens group and the focus lens group to send a step number signal and a microcontroller, the microcontroller controls the first drive motor and the second drive motor to drive the zoom lens group and the focus lens group to move respectively, and receives the first block and the The positioning signal of the second shutter and the step signal of the zoom lens group and the focusing lens group, and the microcontroller controls the The zoom lens group and the focus lens group move; wherein, in the initial state, the microcontroller controls the first drive motor to drive the zoom lens group to rotate forward, when the zoom lens group rotates forward When turning out, if the microcontroller does not receive the positioning signal sent by the positioning sensing element, the first drive motor will continue to drive the zoom lens group to rotate forward, and when the microcontroller When the device receives the positioning signal, the microcontroller controls the zoom lens group to stop moving according to the positioning signal and the step signal, and controls the second drive motor to drive the focusing lens group to rotate forward transfer out.

When the microcontroller controls the second drive motor to drive the focusing lens group forward and out, if the microcontroller does not receive the positioning signal, the second drive motor continues to drive The focusing lens group rotates forward and out.

When the microcontroller receives the positioning signal from the positioning sensing element, the microcontroller controls the focus lens group to stop moving according to the positioning signal and the step number signal.

The microcontroller also includes a power-off detection unit, the power-off detection unit detects whether the dual-motor lens actuator is shut down normally, if the dual-motor lens actuator is shut down normally , then the shutdown detection unit writes a normal shutdown information into the microcontroller.

When the microcontroller does not read the normal shutdown information, the microcontroller controls the second drive motor to drive the focusing lens group to reversely move a farthest travel step, and controls the The first drive motor is used to drive the zoom lens group to move in reverse.

When the microcontroller does not read the normal shutdown information, and the microcontroller controls the first drive motor to drive the zoom mirror group to reversely move, the microcontroller receives the zoom mirror The step number signal of the group, and when the microcontroller does not receive the step number signal for a predetermined time, the microcontroller controls the first drive motor to stop driving the zoom lens group to move.

A dual-motor lens actuation method is applicable to a dual-motor lens actuation device, and the dual-motor lens actuation method includes the following steps: setting a first barrier on one side of a zoom lens group and a second barrier On one side of a focus lens group, and set the focus lens group below the zoom lens group; use a first drive motor and a second drive motor to drive the zoom lens group and the focus lens group respectively moving; using a positioning sensing element to sense the position of the first block or the second block to send a positioning signal corresponding to the first block and the second block; by The one-step number sensing unit senses the movement of the zoom lens group and the focus lens group to send a one-step number signal; a microcontroller is used to control the first drive motor and the second drive motor to respectively drive the The zoom lens group or the focus lens group moves; the positioning signal of the first block and the second block and the positioning signals of the zoom lens group and the focus lens group are received by the microcontroller the step number signal; and control the movement of the zoom lens group and the focus lens group by the microcontroller according to the positioning signal and the step number signal; wherein, in the initial state, the microcontroller The controller controls the first driving motor to drive the zoom lens group to rotate forward and rotate out. When the zoom lens group rotates forward and rotates out, if the microcontroller does not receive the The positioning signal is continuously driven by the first drive motor to rotate the zoom lens group forward and out. When the microcontroller receives the positioning signal, the microcontroller uses the positioning signal and the The step number signal controls the zoom lens group to stop moving, and controls the second drive motor to drive the focus lens group to rotate forward and out.

The dual-motor lens actuation method further includes the following steps: controlling the second drive motor by the microcontroller to drive the focusing lens group to rotate forward and rotate out; and when the focus lens group rotates forward and outward, And when the microcontroller does not receive the positioning signal, the focusing lens group is continuously driven forward and outward by the second driving motor.

The dual-motor lens actuation method further includes the following steps: when the microcontroller receives the positioning signal sent by the positioning sensing element, use the microcontroller to The signal controls the focusing lens group to stop moving.

The microcontroller also includes a shutdown detection unit, which also includes the following steps: detecting whether the dual-motor lens actuating device is shut down normally when the shutdown detection unit is used; and if the dual-motor lens When the shutdown of the actuating device is a normal shutdown, a normal shutdown information is written into the microcontroller through the shutdown detection unit.

The dual-motor lens actuation method also includes the following steps: when the microcontroller does not read the normal shutdown information, use the microcontroller to control the second drive motor to drive the focusing mirror group mirror The number of steps of the farthest travel is rotated; and the first drive motor is controlled by the microcontroller to drive the zoom lens group to move in reverse.

The dual-motor lens actuation method also includes the following steps: when the microcontroller does not read the normal shutdown information, and the microcontroller controls the first drive motor to drive the zoom lens group to reverse When moving, the step number signal of the zoom lens group is received by the microcontroller; and when the microcontroller does not receive the step number signal for a predetermined time, the microcontroller Controlling the first drive motor to stop driving the zoom lens group to move.

Based on the above, the dual-motor lens actuation device and the dual-motor lens actuation method of the present invention have the following advantages:

(1) The dual-motor lens actuation device and the dual-motor lens actuation method of the present invention mainly use a single microcontroller and a positioning sensor to control the zoom lens group and the focus lens group to move to the origin of the mechanism, which not only reduces the number of lenses The components reduce the manufacturing cost, and can effectively reduce the power consumption of the camera battery, so as to meet the requirements of users for using the camera.

(2) The dual-motor lens actuation device and the dual-motor lens actuation method of the present invention use a microcontroller to detect the zoom lens group and the focus lens group according to a single positioning sensing element, and control according to the positioning signal and the step number signal Whether the dual motors drive the two lens groups separately, and can solve the problem when the camera is abnormally turned off at the same time.

Description of drawings

Fig. 1 is a block diagram of the dual-motor lens actuator of the present invention;

2 is a schematic diagram of the first embodiment of the dual-motor lens actuator of the present invention;

3A is a first flow chart of the first embodiment of the dual-motor lens actuation method of the present invention;

3B is a second flowchart of the first embodiment of the dual-motor lens actuation method of the present invention;

4 is a schematic diagram of a second embodiment of the dual-motor lens actuator of the present invention;

5A is a first flow chart of the second embodiment of the dual-motor lens actuation method of the present invention;

5B is a second flowchart of the second embodiment of the dual-motor lens actuation method of the present invention;

FIG. 5C is a third flowchart of the second embodiment of the dual-motor lens actuation method of the present invention.

Detailed ways

The dual-motor lens actuating device and the dual-motor lens actuating method of the present invention can be applied to imaging devices such as digital cameras, smart camera phones, and SLR cameras, but the practical scope of application is not limited by imaging devices.

Please refer to FIG. 1 , which is a block diagram of the dual-motor lens actuator of the present invention. In the figure, the dual-motor lens actuator 1 includes a zoom lens group 11, a focus lens group 12, a first drive motor 131, a second drive motor 132, a positioning sensing element 14, and a step number sensing unit 15 and a microcontroller 16 . One side of the zoom lens group 11 is provided with a first block 110 , one side of the focus lens group 12 is provided with a second block 120 , and the focus lens group 12 is disposed below the zoom lens group 11 . The first driving motor 131 and the second driving motor 132 can be DC motors or stepping motors, which can respectively drive the zoom lens group 11 or the focus lens group 12 to move. The position sensing element 14 can be a photointerrupter or a position sensor (Position Indicator, PI), etc. can be used as a positioning and sensing element, and the position sensing element 14 can sense the position of the first blocking plate 110 and the second blocking plate 120 position to send a signal corresponding to the first block 110 and the second block 120 . The step detection unit 15 can sense the movement of the zoom lens group 11 and the focus lens group 12 to send a step signal 150 . The microcontroller 16 can be a micro control unit (Micro Control Unit, MCU) and other components, and the microcontroller includes a shutdown detection unit 161, which can detect whether the dual-motor lens actuator 1 is shut down normally. When the dual-motor lens actuator 1 is shut down, it is a normal shutdown, and the shutdown detection unit 161 can write the normal shutdown information into the microcontroller 16 . The microcontroller 16 can be electrically connected to the first driving motor 131, the second driving motor 132, the positioning sensing element 14 and the step detection unit 15, and can control the first driving motor 131 and the second driving motor 132 to drive the zoom lens Group 11 or focus lens group 12 moves. Moreover, the microcontroller 16 can receive the positioning signal 140 of the first block 110 and the second block 120 , and the step signal 150 of the focus lens group 12 and the zoom lens group 11 . Furthermore, the movement of the zoom lens group 11 and the focus lens group 12 is controlled according to the positioning signal 140 and the step signal 150 .

As mentioned above, when the micro-controller 16 controls the first drive motor 131 to drive the zoom lens group 11 to rotate forward, the positioning sensing element 14 can sense the position of the zoom lens group 11 to determine whether to send a positioning signal 140 . If the microcontroller 16 does not receive the positioning signal 140 , the first driving motor 131 can continuously drive the zoom lens group 11 to continue forward rotation and out. If the microcontroller 16 receives the positioning signal 140 , the microcontroller 16 can control the zoom lens group 11 to stop moving according to the positioning signal 140 and the step signal 150 . Next, the microcontroller 16 controls the second driving motor 132 to drive the focus lens group 12 to rotate forward and outward.

In this way, when the second drive motor 132 drives the focus lens group 12 to rotate forward, if the microcontroller 16 does not receive the positioning signal 140, the second drive motor 132 can continuously drive the focus lens group 12 to continue to rotate forward. turn out. If the microcontroller 16 receives the positioning signal 140 , the microcontroller 16 can control the focus lens group 12 to stop moving according to the positioning signal 140 and the step signal 150 .

Please refer to FIG. 2 , which is a schematic diagram of a first embodiment of the dual-motor lens actuating device of the present invention. As shown in the figure, the dual-motor lens actuating device is suitable for an imaging device, but not limited thereto. It is worth noting that the dual-motor lens actuating device of the present invention has a single positioning sensing element 14 . The lens includes a zoom lens group 11 and a focus lens group 12 , and the zoom lens group 11 is disposed above the focus lens group 12 . The zoom lens group 11 has a first blocking plate 110 , and the first blocking plate 110 is disposed at a position corresponding to the position sensing element 14 . Meanwhile, the focusing lens group 12 has a second blocking piece 120 , and the second blocking piece 120 is disposed at a position corresponding to the positioning sensing element 14 .

If the shutdown detection unit 161 detects that the camera is in a normal shutdown state, the shutdown detection unit 161 will write the normal shutdown information into the microcontroller 16, and when the camera is turned on, the microcontroller 16 can read the normal shutdown information , so the first drive motor 131 can drive the zoom lens group 11 to rotate forward and out. It is worth noting that when the zoom lens group 11 rotates forward and outward, the positioning sensing element 14 can detect the movement of the zoom lens group 11 to send a high-level signal, and the step number sensing unit 15 can detect the movement of the zoom lens group 11 according to the zoom lens. The movement of the group 11 continuously emits a step count signal 150 . When the microcontroller 16 receives the low-level signal from the positioning sensing element 14, it controls the zoom lens group 11 to stop moving, and drives the focus lens group 12 to rotate forward and out. Next, when the focus lens group 12 is driven forward by the second drive motor 132 to rotate out, the positioning sensing element 14 can detect the movement of the focus lens group 12 to send a high-level signal. When the microcontroller 16 receives a low-level signal from the position sensing element 14, the microcontroller 16 can control the focus lens group 12 to stop moving, and the step sensor unit 15 stops sending the step signal 150 to complete the lens. forward rotation action.

Although the concept of the dual-motor lens actuation method of the dual-motor lens actuation device of the present invention has been described in the process of describing the dual-motor lens actuation device of the present invention, for the sake of clarity, a flow chart is still drawn below Detailed description.

Please refer to FIG. 3A and FIG. 3B together, which are the first and second flowcharts of the first embodiment of the dual-motor lens actuation method of the present invention. The dual-motor lens actuation method of the present invention is applicable to a dual-motor lens actuation device, and the dual-motor lens actuation device includes a zoom lens group and a focus lens group, a first drive motor and a second drive motor, a positioning sensing element, and a number of steps The sensing unit and the microcontroller, the zoom lens group and the focusing lens group respectively have a first blocking piece and a second blocking piece, and the first driving motor and the second driving motor can respectively drive the zooming lens group and the focusing lens group to move. As shown in FIGS. 3A and 3B , the dual-motor lens actuation method may include the following steps:

In step S101 , when the shutdown detection unit detects that the dual-motor lens actuator is shut down, it is a normal shutdown.

In step S102, normal shutdown information is written into the microcontroller by the shutdown detection unit.

In step S103, after starting up, the microcontroller reads the normal shutdown information.

Next, in step S104 , the zoom lens group is driven to rotate forward and out by the first driving motor.

In step S105, the step number sensing unit continuously sends out a step number signal according to the movement of the zoom lens group.

In step S106 , the positioning sensor is used to detect the movement of the zoom lens group to send a high level signal.

In step S107 , whether the microcontroller receives a low-level signal from the positioning sensing element.

When the microcontroller receives the signal that the positioning signal is at a low level, the microcontroller controls the zoom lens group to stop moving through step S108; if not, returns to step S104.

In step S109, the focus lens group is driven to rotate forward and out by the second driving motor.

In step S110, the step number sensing unit continuously sends out a step number signal according to the movement of the focus lens group.

In step S111 , the movement of the focus lens group is detected by the position sensing element to send a high level signal.

In step S112, whether the microcontroller receives a low-level signal from the positioning sensing element.

If the microcontroller receives a signal that the positioning signal is at a low level, then execute step S113, and control the focus lens group to stop moving through the microcontroller; if not, return to step S109.

Finally, after step S113 is executed, step S114 is further executed to stop sending the step count signal through the step count sensing unit, so as to complete the normal rotation of the lens.

Please refer to FIG. 4 , which is a schematic diagram of a second embodiment of the dual-motor lens actuating device of the present invention. As shown in the figure, the dual-motor lens actuating device is suitable for an imaging device, but not limited thereto. Incidentally, the camera device may be provided with an anti-collision structure (not shown), and the dual-motor lens actuating device of the present invention has a single positioning sensing element 14 . The lens includes a zoom lens group 11 and a focus lens group 12 , and the zoom lens group 11 is disposed above the focus lens group 12 . The zoom lens group 11 can have a first blocking plate 110 , and the first blocking plate 110 is disposed at a position corresponding to the positioning sensing element 14 . Meanwhile, the focusing lens group 12 has a second blocking piece 120 , and the second blocking piece 120 is disposed at a position corresponding to the positioning sensing element 14 .

If the shutdown detection unit 161 detects that the camera device is abnormally shut down and is in an abnormal shutdown state, the shutdown detection unit 161 will not act and will not write normal shutdown information into the microcontroller 16 . Therefore, when the camera device is turned on, the microcontroller 16 cannot read the normal shutdown information, so the focus lens group 12 is first driven by the second drive motor 132, so that the focus lens group 12 reverses and moves to the farthest number of travel steps . Next, the first driving motor 131 drives the zoom lens group 11 to reversely move. It should be noted that when the zoom lens group 11 is reversed and turned back, the step count sensing unit 15 can continuously send out the step count signal 150 according to the movement of the zoom lens group 11 . It is judged by the microcontroller 16 whether the step signal 150 stops exceeding a preset time, if the step signal 150 stops exceeding the preset time, it means that the zoom lens group 11 has reversed to the origin, so the microcontroller 16 is used to control the first The driving motor 131 stops driving the zoom lens group 11 to control the zoom lens group 11 to stop moving. If the stop time of the step signal 150 does not exceed the preset time, the micro-controller 16 can continuously control the zoom lens group 11 to continue to reversely move.

In other words, when the zoom lens group 11 reverses back to the original point, it can be regarded as correcting the previous abnormal shutdown state, and at the same time, the focusing lens group 12 can also be controlled by the dual-motor lens actuation method of the aforementioned first embodiment. And the zoom lens group 11 rotates forward and turns out.

Although the concept of the dual-motor lens actuation method of the dual-motor lens actuation device of the present invention has been described in the process of describing the dual-motor lens actuation device of the present invention, for the sake of clarity, a flow chart is still drawn below Detailed description.

Please refer to FIGS. 5A, 5B and 5C together, which are the first, second and third flow charts of the second embodiment of the dual-motor lens actuation method of the present invention. As shown in the figure, the following steps may be included:

In step S201 , the shutdown detection unit is used to detect that the shutdown of the dual-motor lens actuator is an abnormal shutdown.

Since the shutdown of the dual-motor lens actuator is an abnormal shutdown, and the microcontroller cannot read the normal shutdown information, step S202 is executed, and the focusing lens group is driven by the second drive motor to reversely move to the furthest travel steps. .

In step S203, the zoom lens group is driven to reversely move by the first driving motor.

In step S204, the step number sensing unit continuously sends out a step number signal according to the movement of the zoom lens group.

In step S205, it is judged by the microcontroller whether the step count signal stops exceeding a preset time.

If the step signal stops for more than the preset time, it means that the zoom lens group has reversed to the origin, so step S206 can be performed, and the micro-controller controls the first driving motor to drive the zoom lens group to stop moving. If not, it means that the zoom lens group has not moved back to the original point, and step S203 can be further executed, and the micro-controller continuously controls the zoom lens group to continue to move in reverse.

In step S207, the zoom lens group is driven to rotate forward and out by the first driving motor.

In step S208, the step number sensing unit continuously sends out a step number signal according to the movement of the zoom lens group.

In step S209, the movement of the zoom lens group is detected by the positioning sensing element to send a high-level signal.

In step S210 , whether the microcontroller receives a low level signal from the positioning sensing element.

If the microcontroller receives a signal that the positioning signal is at a low level, then execute step S211, and control the zoom lens group to stop moving through the microcontroller; if not, return to step S207.

In step S212, the focus lens group is driven to rotate forward and out by the second driving motor.

In step S213, the step number sensing unit continuously sends out a step number signal according to the movement of the focus lens group.

In step S214, the movement of the focusing lens group is detected by the positioning sensing element to send a high level signal.

In step S215 , whether the microcontroller receives a low-level signal from the positioning sensing element.

If the microcontroller receives a signal that the positioning signal is at a low level, then execute step S216, and control the focus lens group to stop moving through the microcontroller; if not, return to step S212.

Finally, when step S216 is executed, step S217 is executed next, and the step number sensing unit stops sending out the step number signal, so as to complete the normal rotation of the lens.

To sum up the above, the dual-motor lens actuation device and the dual-motor lens actuation method of the present invention use a microcontroller to detect the zoom lens group and the focus lens group according to a single positioning sensing element, and control according to the positioning signal and the step number signal Whether the dual motors drive the two lens groups separately, and can solve the problem when the camera is abnormally turned off at the same time. In this way, not only the number of lens parts is reduced, but also the manufacturing cost is reduced, and the power consumption of the camera battery can be effectively reduced, so as to meet the needs of users for using the camera.

The above are the preferred embodiments of the present invention and the technical principles used therein. For those skilled in the art, without departing from the spirit and scope of the present invention, any technical solution based on the present invention, etc. Obvious changes such as effective conversion and simple replacement all fall within the protection scope of the present invention.

Claims (12)

1. a double motor lens actuating device is characterized in that, it comprises:

One first catch and one second catch, described the first catch is arranged at a side of a varifocal mirror group, and described the second catch is arranged at a side of a focusing mirror group, and described focusing mirror group is arranged at described varifocal mirror group below;

One first CD-ROM drive motor and one second CD-ROM drive motor, described the first CD-ROM drive motor, described the second CD-ROM drive motor drive respectively described varifocal mirror group and described focusing mirror group moves;

One location sensing element, the position of described the first catch of described location sensing element sensing and described the second catch is to send a location signal of corresponding described the first washer and described the second washer;

One step number sensing cell, the described varifocal mirror group of described step number sensing cell sensing and described focusing mirror group's movement is to send a step number signal; And

One microcontroller, described the first CD-ROM drive motor of described microprocessor controls and described the second CD-ROM drive motor drive respectively described varifocal mirror group and described focusing mirror group moves, and receive the described location signal of described the first catch and described the second catch and described varifocal mirror group and described focusing mirror group's described step number signal, and described microcontroller is according to described location signal and described step number signal is controlled described varifocal mirror group and described focusing mirror group moves;

Wherein, under original state, described the first CD-ROM drive motor of described microprocessor controls drives described varifocal mirror group forward and produces, when described varifocal mirror group forward produces, if described microcontroller does not receive the described location signal that described location sensing element sends, described the first CD-ROM drive motor then drives constantly described varifocal mirror group forward and produces, when described microcontroller receives described location signal, described microcontroller is controlled described varifocal mirror group according to described location signal and described step number signal and is stopped mobilely, and controls described the second CD-ROM drive motor and drives described focusing mirror group forward and produce.

2. double motor lens actuating device as claimed in claim 1, it is characterized in that: when described the second CD-ROM drive motor of described microprocessor controls drives described focusing mirror group forward and produces, if described microcontroller does not receive described location signal, then described the second CD-ROM drive motor drives constantly described focusing mirror group forward and produces.

3. double motor lens actuating device as claimed in claim 2, it is characterized in that: when described microcontroller received the described location signal that described location sensing element sends, described microcontroller was controlled described focusing mirror group according to described location signal and described step number signal and is stopped mobile.

4. double motor lens actuating device as claimed in claim 1, it is characterized in that: described microcontroller also comprises a shutdown detecting unit, whether described shutdown detecting unit is normal shutdown when detecting described double motor lens actuating device shutdown, if be normal shutdown during described double motor lens actuating device shutdown, then described shutdown detecting unit writes described microcontroller with a normal shutdown information.

5. double motor lens actuating device as claimed in claim 4, it is characterized in that: when described microcontroller does not read described normal shutdown information, described the second CD-ROM drive motor of described microprocessor controls drives the described focusing mirror group mobile furthest travel step number of reversing, and controls described the first CD-ROM drive motor and drive the described varifocal mirror group movement of reversing.

6. double motor lens actuating device as claimed in claim 4, it is characterized in that: when described microcontroller does not read described normal shutdown information, and the described varifocal mirror group of described the first drive motor of described microprocessor controls reverses when mobile, described microcontroller receives described varifocal mirror group's described step number signal, and when described microcontroller did not receive described step number signal and reaches a schedule time, then described the first CD-ROM drive motor of described microprocessor controls stopped to drive described varifocal mirror group and moves.

7. a double motor camera lens actuating method is applicable to a double motor lens actuating device, and described double motor camera lens actuating method comprises the following steps:

One first catch is set in a side of a varifocal mirror group and one second catch in a side of a focusing mirror group, and described focusing mirror group is set in described varifocal mirror group below;

Utilize one first CD-ROM drive motor and one second CD-ROM drive motor to drive respectively described varifocal mirror group and described focusing mirror group moves;

By the position of location described first catch of sensing element sensing or described the second catch, to send a location signal of corresponding described the first washer and described the second washer;

By the described varifocal mirror group of a step number sensing cell sensing and described focusing mirror group's movement, to send a step number signal;

Utilize described the first CD-ROM drive motor of a microprocessor controls and described the second CD-ROM drive motor to drive respectively described varifocal mirror group or described focusing mirror group moves;

Receive the described location signal of described the first catch and described the second catch and described varifocal mirror group and described focusing mirror group's described step number signal by described microcontroller; And

By described microcontroller according to described location signal and described step number signal is controlled described varifocal mirror group and described focusing mirror group moves;

Wherein, under original state, driving described varifocal mirror group forward by described the first CD-ROM drive motor of described microprocessor controls produces, when described varifocal mirror group forward produces, if described microcontroller does not receive the described location signal that described location sensing element sends, then driving constantly described varifocal mirror group forward by described the first CD-ROM drive motor produces, when described microcontroller receives described location signal, utilize described microcontroller to control described varifocal mirror group according to described location signal and described step number signal and stop mobilely, and control the described focusing mirror of described the second drive motor group forward and produce.

8. double motor camera lens actuating method as claimed in claim 7 is characterized in that: also comprise the following steps:

Produce by the described focusing mirror of described the second drive motor of described microprocessor controls group forward; And

When described focusing mirror group forward produces, and described microcontroller drives constantly described focusing mirror group forward by described the second CD-ROM drive motor and produces when not receiving described location signal.

9. double motor camera lens actuating method as claimed in claim 8 is characterized in that: also comprise the following steps:

When described microcontroller receives the described location signal that described location sensing element sends, utilize described microcontroller to control described focusing mirror group according to described location signal and described step number signal and stop mobile.

10. double motor camera lens actuating method as claimed in claim 7 is characterized in that: described microcontroller also comprises a shutdown detecting unit, wherein also comprises the following steps:

Whether be normal shutdown when detecting described double motor lens actuating device shutdown by described shutdown detecting unit; And

If be normal shutdown during described double motor lens actuating device shutdown, then by described shutdown detecting unit one normal shutdown information is write described microcontroller.

11. double motor camera lens actuating method as claimed in claim 10 is characterized in that: also comprise the following steps:

When described microcontroller does not read described normal shutdown information, utilize the described focusing mirror of described the second drive motor of described microprocessor controls group to reverse and move a furthest travel step number; And

By the described varifocal mirror group of described the first drive motor of the described microprocessor controls movement of reversing.

12. double motor camera lens actuating method as claimed in claim 10 is characterized in that: also comprise the following steps:

When described microcontroller does not read described normal shutdown information, and the described varifocal mirror group of described the first drive motor of described microprocessor controls reverses when mobile, receives described varifocal mirror group's described step number signal by described microcontroller; And

When described microcontroller does not receive described step number signal and reaches a schedule time, then stop to drive described varifocal mirror group by described the first CD-ROM drive motor of described microprocessor controls and move.

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