JPH07295737A - Optical visual device - Google Patents

Abstract

PURPOSE:To miniaturize and lighten the optical visual device, to reduce the cost and to make a system wireless. CONSTITUTION:Concerning an optical visual device 1 for presenting a virtual space through a display by displaying video information corresponding to movements on the display, an acceleration sensor 4 and a piezoelectric gyro 5 are respectively provided in X, Y and Z axial directions. Based on the acceleration detecting outputs from these respective acceleration sensors 4 and rotation detecting outputs from the piezoelectric gyros 5, a microcomputer 6 calculates position detection information and azimuth detection information showing the move of a user and a transmission circuit 7 radio-transmits this information to the side of a transmitter 2. The transmitter 2 executes the infrared transmission of video information corresponding to the position detection information and the azimuth detection information. The optical visual device 1 presents the virtual space by displaying the infrared transmitted video information on the display.

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention is suitable for use in a virtual reality system or the like which provides a virtual space through the display by displaying video information according to the moving position on the display. The present invention relates to an optical visual device, and more particularly, to an optical visual device in which an accelerometer and a piezoelectric gyro are used as means for detecting a moving position to expand the usable range, downsize the system, and make the system wireless.

[0002]

2. Description of the Related Art Virtual reality systems are known today. This virtual reality system generates, for example, an optical visual device of a spectacles type (or a helmet type) worn by the user, a magnetic field in a range in which the user can move, and image information according to the movement of the user. It is configured by connecting the supply control unit via a connection line.

The optical visual device has a magnetic sensor and a display for displaying image information from the control section. The magnetic sensor is provided on each of the three axes of the X-axis direction, the Y-axis direction, and the Z-axis direction, and determines the direction and strength of the magnetic field generated by the control unit according to the moving position and the moving direction of the user, respectively. It detects and supplies each detection output to the control section through the connection line.

The control unit detects the moving position and moving direction of the user based on the detection output from the magnetic sensor, and the video information corresponding to the detection result is displayed on the optical visual device via the connection line. Supply to. As a result, it is possible to display video information according to the moving position and moving direction of the user on the display.

Since the user can recognize an image corresponding to the position and direction to which he / she has moved through the display, he / she feels as if he / she were in the space. Thereby, provision of a virtual space is realized.

[0006]

However, the generation range of the magnetic field generated from the control section is very narrow and has a limit. Therefore, the conventional virtual reality system has a problem that the detection range of the moving position and the moving direction of the user is limited to the narrow generation range of the magnetic field.

Further, at the start of use of the virtual reality system, in order to detect the moving position and moving direction of the user, it is necessary to first make the control unit recognize (initialize) the absolute position. Therefore, at the start of use, there is a problem that adjustment of the magnetic sensor or the like is required for the initial setting.

Further, in order to detect the moving position and the moving direction of the user, it is necessary to perform the detection by the magnetic sensor in synchronization with the magnetic field generated by the control unit. Therefore, the optical visual device and the control unit are required. It was necessary to connect and with the connection line. Therefore, when the user moves, the connection line becomes an obstacle, and there is a problem that the movement of the user is hindered.

From the above, the conventional virtual
The reality system is good when, for example, a user wearing the optical visual device works while moving in a narrow range in a corner of a limited factory. However, as in a shooting game, the optical visual device is used. In the case where the user wearing the device enjoys the game while moving in a wide range, the moving range is limited to a narrow range,
There was a problem of lack of practicality.

The present invention has been made in view of the above-mentioned problems, and it is possible to widen the moving range of the user, to omit the initial setting at the start of use, and to make the wireless communication practical. An object of the present invention is to provide an optical visual device that can be improved.

[0011]

An optical visual device according to the present invention is an optical visual device that provides a virtual space through the display by displaying video information according to movement on the display. At least one acceleration sensor that is provided in any one of the axial direction, the Y-axis direction, and the Z-axis direction and that detects acceleration in the provided axial direction and outputs acceleration information; and acceleration information from the acceleration sensor. And a transmitting means for wirelessly transmitting.

Further, it has an acceleration sensor provided in each of the X-axis direction, the Y-axis direction and the Z-axis direction, and a transmission means for wirelessly transmitting each acceleration information from each acceleration sensor.

Further, the absolute position detecting means for detecting the absolute position based on the geomagnetism and the absolute position detected by the absolute position detecting means are used as a reference to detect the position based on the acceleration information from the acceleration sensor. It has position detection means and transmission means for wirelessly transmitting the position detection output from the position detection means.

Next, the optical visual device according to the present invention displays the video information according to the movement on the display,
An optical visual device that provides a virtual space through the display, is provided in any one of the X-axis direction, the Y-axis direction, and the Z-axis direction, and detects the rotation direction of the provided axial direction. It has at least one piezoelectric gyro that outputs rotation information, and a transmitting unit that wirelessly transmits the rotation information from the piezoelectric gyro.

Further, it has a piezoelectric gyro provided one each in the X-axis direction, the Y-axis direction and the Z-axis direction, and a transmission means for wirelessly transmitting each rotation information from each piezoelectric gyro.

Further, based on the absolute azimuth detecting means for detecting the absolute azimuth based on the geomagnetism and the absolute azimuth detected by the absolute azimuth detecting means, the azimuth is detected based on the rotation information from the piezoelectric gyro. Azimuth detecting means,
And transmitting means for wirelessly transmitting the azimuth detection output from the azimuth detecting means.

Next, the optical visual device according to the present invention displays image information according to movement on a display to provide a virtual space through the display. At least one acceleration sensor that is provided in one of the Y-axis direction and the Z-axis direction and that detects acceleration in the provided axial direction and outputs acceleration information; and an axial direction in which the acceleration sensor is provided. At least one piezoelectric gyro that is provided in the same axial direction and that detects the rotational direction of the axial direction and outputs rotation information, and a transmitting means that wirelessly transmits the acceleration information from the acceleration sensor and the rotation information from the piezoelectric gyro. Have and.

The acceleration sensor and the piezoelectric gyro, which are provided in the X-axis direction, the Y-axis direction, and the Z-axis direction, the acceleration information from the acceleration sensor, and the piezoelectric gyro. And a transmitting means for wirelessly transmitting the rotation information of each.

Further, an absolute position detecting means for detecting an absolute position based on the geomagnetism, an absolute orientation detecting means for detecting an absolute orientation based on the geomagnetism, an absolute position detected by the absolute position detecting means and the absolute orientation. Based on the absolute azimuth detected by the detection means, position detection based on the acceleration information from the acceleration sensor and position detection based on rotation information from the piezoelectric gyro, and position and orientation detection means, And a transmission unit for wirelessly transmitting the position detection output and the direction detection output from the position and direction detection unit.

[0020]

The optical visual device according to the present invention is suitable for use in a so-called virtual reality system or the like which provides a virtual space through the display by displaying video information according to the moving position on the display. It is an optical visual device such as a helmet type or eyeglass type, and is attached to the user's head or face.

Before the start of use, the absolute position detecting means detects the absolute position based on the geomagnetism, supplies the absolute position detection output to the position detecting means, and the absolute direction detecting means detects the absolute direction based on the geomagnetism. This is detected and this absolute azimuth detection output is supplied to the position and azimuth detecting means. The position / azimuth detecting means automatically resets the position detection output and the azimuth detection output to initial values based on the absolute position detection output and the absolute azimuth detection output.

When the user moves in this state, the acceleration sensors provided in the X-axis direction, the Y-axis direction and the Z-axis direction respectively detect the acceleration in the provided axial direction. The acceleration information is supplied to each of the position / orientation detecting means. Further, each piezoelectric gyro provided one by one in each axial direction detects each rotational direction (angular velocity information or angular acceleration information) in the axial direction provided, and each rotational information is detected as the position and orientation. Supply to the means.

The position / orientation detecting means, based on the acceleration information from the acceleration sensors and the rotation information from the piezoelectric gyros, the user's X-axis direction, Y-axis direction, and Z-direction.
The movement position and movement direction in the axial direction are detected, and the position detection output and the direction detection output are supplied to the transmitting means.

The transmitting means is a wireless oscillator, and wirelessly transmits the position detection output and the azimuth detection output to, for example, a control unit which supplies image information to the optical visual device. The control unit transmits image information corresponding to the position detection output and the azimuth detection output to the display by infrared rays, for example.

As a result, the user can recognize the image corresponding to his / her moving position and moving direction through the display, and can experience the virtual space.

Since the optical visual device can wirelessly transmit the position detection output and the azimuth detection output to the control unit, when the optical visual device is applied to, for example, a virtual reality system, the virtual reality system is used.・ The system can be made wireless. In this case, the video information from the control unit may be supplied to the optical visual device via a connection line, but by transmitting the video information by infrared rays as described above, the virtual reality system Can be made completely wireless.

Further, since the acceleration sensor and the piezoelectric gyro can be made of semiconductor, they are small and inexpensive.
In addition, it can be formed to be lightweight and does not occupy an installation area when provided in the optical visual device. Therefore, it is possible to reduce the size, weight and cost of the optical visual device.

Further, since the absolute position detecting means and the absolute azimuth detecting means reset the position detecting output and the azimuth detecting output to the initial values by detecting the geomagnetism, a troublesome initial adjustment before the start of use. Can be automated.

Further, since the moving position and the moving direction of the user are detected by using each of the acceleration sensors described above, it is synchronized with the generated magnetic field like the magnetic field method for detecting the motion based on the magnetic field generated by the control section. In addition, it is possible to prevent the user's moving range from being limited to the generated magnetic field range, and it is possible to freely and widen the user's moving range. Therefore, it is possible to provide a practical virtual reality system or the like.

The acceleration sensor is arranged in the X-axis direction and the Y-axis direction.
One is provided for each axial direction of the axial direction and the Z-axis direction. However, this is provided for any one axial direction, or
You may make it respectively provided in two desired axial directions. In this case, it is possible to obtain a desired axial position detection output provided with the acceleration sensor.

Similarly, the piezoelectric gyro is arranged in the X-axis direction,
One is provided in each of the Y-axis direction and the Z-axis direction, but this may be provided in any one axial direction or in any two desired axial directions. In this case, it is possible to obtain a desired axial direction azimuth detection output provided with the piezoelectric gyro.

The acceleration sensor and the piezoelectric gyro may be provided only in the axial direction required by the system, and may be appropriately changed according to the design of the system or the like.

Further, the position / orientation detecting means, based on each acceleration information from each of the acceleration sensors and each rotation information from each piezoelectric gyro, position detection output and azimuth detection output indicating a moving position and a moving azimuth of the user. This is to output the acceleration information and rotation information from the acceleration sensors and the piezoelectric gyro to the control unit as they are, and the control unit calculates the moving position and the moving azimuth of the user. You may make it detect.

As a result, the position / orientation detecting means provided in the optical visual device can be omitted, the number of parts can be reduced, the weight can be reduced, and the cost can be reduced.

[0035]

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENT A preferred embodiment of an optical visual device according to the present invention will be described in detail below with reference to the drawings.

The optical visual device according to the embodiment of the present invention can be applied to a virtual reality system that provides a virtual space to a user.

That is, the above virtual reality
As shown in FIG. 1, the system is composed of an optical visual device 1 and a transmission device 2 which supplies image information and the like to the optical visual device 1.

The optical visual device 1 is formed of a semiconductor and an optical visual part 3 of a spectacle type having a display for displaying image information inside, and detects the acceleration and the rotation direction according to the movement of the user. , And an acceleration sensor 4 and a piezoelectric gyro 5 that output an acceleration signal and a rotation signal (angular velocity signal).

The optical visual device 1 further includes a light receiving circuit 8 for receiving the image information and the like from the transmitting device 2, an acceleration signal from the acceleration sensor 4, an angular velocity signal from the piezoelectric gyro 5 and the light receiving circuit 8. Based on a control signal supplied via the microcomputer, the microcomputer 6 calculates a user's moving position and moving direction, and outputs the position detecting signal and the direction detecting signal, and the position detecting signal from the microcomputer 6 and The transmission circuit 7 wirelessly transmits the azimuth detection signal to the transmission device 2 side.

The acceleration sensor 4 and the piezoelectric gyro 5
Are provided in the X-axis direction, the Y-axis direction, and the Z-axis direction, which are orthogonal to each other, as shown in FIG.

That is, the acceleration sensor 4 is the first acceleration sensor 4X for detecting the acceleration (X) in the X-axis direction.
And a second acceleration sensor 4Y that detects the acceleration (Y) in the Y-axis direction and a third acceleration sensor 4Z that detects the acceleration (Z) in the Z-axis direction. The acceleration signals from 4Y and 4Z are supplied to the A / D converter 21 via the amplifier circuit 20, digitized, and supplied to the microcomputer 6.

The piezoelectric gyro 5 has a first piezoelectric gyro 5X for detecting the rotational azimuth (r) in the X-axis direction,
The piezoelectric gyro 5X includes a second piezoelectric gyro 5Y that detects the rotation direction (θ) in the Y-axis direction and a third piezoelectric gyro 5Z that detects the rotation direction (φ) in the Z-axis direction. The angular velocity signals from 5Y and 5Z are supplied to the A / D converter 21 via the amplifier circuit 20, digitized, and supplied to the microcomputer 6.

On the other hand, the transmitter 2 receives the position detection signal and the direction detection signal transmitted from the optical visual device 1, and the position detection signal and the direction detection signal received by the reception circuit 11. A system controller 12 for outputting video information and audio information based on
A sound generation circuit 13 that drives a light emitting circuit 15 formed of an infrared light emitting diode to emit light according to sound information from the system controller 12, and a light emitting circuit 15 that emits light according to image information from the system controller 12. And a video generation circuit 14 that operates.

Next, the operation of the virtual reality system having such a configuration will be described.

First, in order to detect an accurate movement of the user in the microcomputer 6 provided on the optical visual device 1 side, it is necessary to teach the microcomputer 6 the absolute position and the absolute azimuth. Therefore, in the transmitter 2, the system controller 12 drives the light emitting circuit 15 to emit light based on the position reset data indicating the absolute position and the absolute azimuth prior to the start of a game or the like. As a result, the position reset data is wirelessly transmitted as an infrared signal to the optical visual device 1 side.

The optical visual device 1 receives the position reset data transmitted as the infrared signal by the light receiving circuit 8 and supplies it to the microcomputer 6. Thereby, the microcomputer 6 can know the absolute position and the absolute azimuth, and thereafter, based on the acceleration signal and the angular velocity signal from the acceleration sensor 4 and the piezoelectric gyro 5, it is possible to accurately detect the moving position and the moving azimuth of the user. It will be possible.

Next, when starting the game, the system controller 12 of the transmitter 2 starts a signal for instructing the microcomputer 6 to start the position / orientation detection operation, a transmission speed selection signal for setting the transmission speed, An output mode selection signal for selecting whether each detection signal transmitted from the optical visual device 1 is continuous output or single output, and
The light emitting circuit 15 is driven to emit light based on a synchronization signal for establishing transmission synchronization (for example, field synchronization or frame synchronization) of each detection signal. As a result, the above signals are transmitted by infrared rays, received by the light receiving circuit 8 on the side of the optical visual device 1 and supplied to the microcomputer 6.

When the start signal is supplied, the microcomputer 6 recognizes that the game is started, and thereafter detects the movement of the user based on the detection output from the acceleration sensor 4 and the piezoelectric gyro 5. .

That is, when the game is started, the acceleration sensors 4X, 4Y, 4Z detect the acceleration in the X-axis direction, the acceleration in the Y-axis direction, and the acceleration in the Z-axis direction, which are caused by the movement of the user. Then, each acceleration signal is supplied to the microcomputer 6.

Further, each of the piezoelectric gyros 5X, 5Y, 5
The Z detects a rotation direction in the X-axis direction, a rotation direction in the Y-axis direction, and a rotation direction in the Z-axis direction, which are respectively caused by the movement of the user, and supplies each angular velocity signal to the microcomputer 6.

The microcomputer 6 calculates the position and azimuth of the user's movement on the basis of the acceleration signals and the angular velocity signals, and outputs the position detection signal and the azimuth detection signal to a preset transmission speed and output mode. And is supplied to the transmission circuit 7 in synchronization with the synchronization signal.

As a result, the respective detection signals are transmitted to the transmitting device 2 side via the transmitting circuit 7.

The respective detection signals transmitted via the transmission circuit 7 are received by the reception circuit 11 on the transmission device 2 side and supplied to the system controller 12. The system controller 12 causes the audio generation circuit 13 and the video generation circuit 14 to read the audio information and the video information (corresponding to the movement of the user) corresponding to the detection signals, respectively. The video generation circuit 14 is read out and controlled.

The voice generating circuit 13 and the video generating circuit 1
The audio information and the video information read out from 4 are the light emitting circuit 1
5, the light emitting circuit 15 is driven to emit light according to the audio information and the video information.

As a result, the voice information and the video information corresponding to the user's movement are infrared-transmitted through the light emitting circuit 15. The audio information and the video information transmitted by infrared rays are received by the light receiving circuit 8 on the optical visual device 1 side. Then, the video information is supplied to the display provided inside the optical visual part 3, and the audio information is supplied to the earphone 9.

An image corresponding to the movement of the user is displayed on the display, and an acoustic output corresponding to the image is obtained from the earphone 9. By viewing the video and audio, the user can feel the illusion that he or she is there and can experience a virtual space.

It should be noted that such a game is continued until the stop signal indicating the end of the game is supplied from the system controller 12 to the microcomputer 6.

In this way, each acceleration sensor 4X, 4Y,
By performing three-dimensional position detection using 4Z and three-dimensional azimuth detection using each piezoelectric gyro 5X, 5Y, 5Z, and wirelessly transmitting each detection information to the transmitting device 2 side, On the transmitting device 2 side, based on the 6-dimensional information in total, it is possible to form and output video information or the like according to the movement of the user. Therefore, a more realistic virtual space can be provided.

Further, the detection information detected by the acceleration sensor 4 and the piezoelectric gyro 5 are wirelessly transmitted, and the image information and the like from the transmitter 2 side are also infrared-transmitted. Unlike the above, it is not necessary to synchronize with the generated magnetic field, and the virtual reality system can be made completely wireless. Therefore, the movement of the user can be liberated and the range of movement can be expanded, which can greatly contribute to the practical use.

Further, since the acceleration sensor 4 and the piezoelectric gyro 5 are formed of a semiconductor, are lightweight and small in size and do not occupy a large installation area, the weight of the optical visual device 1 is reduced.
It is possible to reduce the size and cost.

Next, in the description of the above embodiment, prior to the start of a game or the like, the system controller 12 of the transmitter 2 outputs the position reset data for notifying the absolute position and the absolute azimuth to the optical visual device. Although the position / direction detection of the microcomputer 6 on the first side is reset, the position / direction detection of the microcomputer 6 may be reset using the geomagnetic sensor 25 as shown in FIG.

The geomagnetic sensor 25 is composed of, for example, a magnetoresistive effect element (MR element), detects geomagnetism, and supplies the detection output to the microcomputer 6 as the position reset data. As a result, the microcomputer 6
The position / orientation detection can be reset prior to the start of a game or the like. Therefore, it is possible to automate the reset of the position / orientation detection performed prior to the start of a game or the like.

Since the detection output of the geomagnetic sensor 25 changes depending on the latitude of the earth, it is preferable to supply latitude information from the system controller 12 to the microcomputer 6 prior to a game or the like. Further, the geomagnetic sensor 25 may cause an error in the detection angle due to its dip angle, but the error may be corrected by each detection output from the acceleration sensor 4 and the piezoelectric gyro 5.

Lastly, in the above description of the embodiments, the optical visual device according to the present invention is the eyeglass type, but it may be a helmet type or any other type that can be worn by the user. Any type can be applied.

Although the piezoelectric gyro 5 detects the angular velocity, the same effect as described above can be obtained by detecting the angular acceleration.

Further, although the transmitting device 2 is supposed to transmit the audio information as well as the video information, it is also possible to transmit only the video information.

Further, three acceleration sensors 4X, 4Y, 4Z and piezoelectric gyros 5X, 5 are provided in each axial direction.
Although Y and 5Z are provided and a total of 6-dimensional motion detection is performed, for example, only the acceleration in the X-axis direction is detected, or the acceleration and the rotation direction in the X-axis direction and the Y-axis direction are detected. As described above, it is needless to say that the system can be appropriately changed so as to detect one-dimensional, two-dimensional, three-dimensional, etc. according to the motion detection required by the system.

[0068]

Since the optical visual device according to the present invention is provided with the acceleration sensor and the piezoelectric gyro formed of the semiconductor for the position detection and the direction detection, the optical visual device can be miniaturized, lightened and miniaturized. The cost can be reduced.

Further, since the position information and the azimuth information detected by the acceleration sensor and the piezoelectric gyro are wirelessly transmitted, it is not necessary to synchronize with the generated magnetic field as in the magnetic field method, and the optical visual device concerned. When, for example, is applied to a virtual reality system, the virtual reality system can be made wireless. Further, unlike the above-mentioned magnetic field method, the user's moving range is not limited to the generated magnetic field range, so that the user's moving range can be widened, which can contribute to practical use.

Further, by detecting the absolute position and the absolute azimuth using the geomagnetism, the reset adjustment of the absolute position and the absolute azimuth can be automated, and the troublesome reset adjustment of the absolute position and the absolute azimuth before use can be performed. It can be simplified.

[Brief description of drawings]

FIG. 1 is a block diagram of an embodiment of an optical vision system using an optical vision device according to the present invention.

FIG. 2 is a diagram for explaining a positional relationship between an acceleration sensor and a piezoelectric gyro provided in the optical vision device of the optical vision system according to the above embodiment.

FIG. 3 is a block diagram when a geomagnetic sensor is provided in the optical visual device.

[Explanation of symbols]

 1 Optical Vision Device 2 Transmitter Device 3 Optical Vision Unit 4 Acceleration Sensor 5 Piezoelectric Gyro 6 Microcomputer (Microcomputer) 7 Optical Vision Unit Transmitting Circuit 8 Optical Vision Unit Light Receiving Circuit 9 Earphone 11 Transmitter Receiver Circuit 12 System Controller 13 Voice Generation circuit 14 Image generation circuit 15 Light emitting circuit 25 Geomagnetic sensor

─────────────────────────────────────────────────── ─── Continuation of the front page (51) Int.Cl. ⁶ Identification code Internal reference number FI Technical display location G09G 3/18 5/00 550 C 9471-5G

Claims (9)

[Claims] 1. An optical visual device for providing a virtual space through a display by displaying video information according to movement on the display, wherein the X-axis direction, the Y-axis direction, or the Z-axis direction. An optical visual device having at least one acceleration sensor that is provided in one direction and that detects acceleration in the provided axial direction and outputs acceleration information, and a transmission unit that wirelessly transmits acceleration information from the acceleration sensor. 2. The acceleration sensor, the X-axis direction, Y
The optical visual device according to claim 1, wherein one is provided in each of the axial direction and the Z-axis direction, and the transmitting means wirelessly transmits each acceleration information from each of the acceleration sensors. 3. An absolute position detecting means for detecting an absolute position based on geomagnetism, and position detection based on acceleration information from the acceleration sensor with reference to the absolute position detected by the absolute position detecting means. 3. A position detecting unit, wherein the transmitting unit wirelessly transmits the position detection output from the position detecting unit.
An optical vision device as described. 4. An optical visual device for providing a virtual space through the display by displaying video information according to movement on the display, in either the X-axis direction, the Y-axis direction or the Z-axis direction. An optical visual device that is provided in one direction and has at least one piezoelectric gyro that detects the rotational direction of the provided axial direction and outputs rotation information, and a transmitting unit that wirelessly transmits the rotation information from the piezoelectric gyro. . 5. The piezoelectric gyro is arranged in the X-axis direction, Y-axis.
5. The optical visual device according to claim 4, wherein one is provided in each of the axial direction and the Z-axis direction, and the transmitting means wirelessly transmits each rotation information from each of the piezoelectric gyros. 6. An absolute azimuth detecting means for detecting an absolute azimuth based on geomagnetism, and azimuth detection based on rotation information from the piezoelectric gyro with reference to the absolute azimuth detected by the absolute azimuth detecting means. An azimuth detecting means, and the transmitting means wirelessly transmits an azimuth detecting output from the azimuth detecting means.
An optical vision device as described. 7. An optical visual device for providing a virtual space through a display by displaying video information according to movement on the display, wherein the optical visual device has one of an X-axis direction, a Y-axis direction and a Z-axis direction. At least one acceleration sensor that is provided in one direction and that detects the acceleration in the axial direction and outputs acceleration information, and that is provided in the same axial direction as the axial direction in which the acceleration sensor is provided. An optical visual device having at least one piezoelectric gyro that detects a rotation direction of the piezoelectric gyro and outputs rotation information, and a transmission unit that wirelessly transmits the acceleration information from the acceleration sensor and the rotation information from the piezoelectric gyro. 8. The acceleration sensor and the piezoelectric gyro are
One is provided in each of the X-axis direction, the Y-axis direction, and the Z-axis direction, and the transmission means respectively receives each acceleration information from each acceleration sensor and each rotation information from each piezoelectric gyro. The optical visual device according to claim 7, wherein the optical visual device performs wireless transmission. 9. An absolute position detection means for detecting an absolute position based on geomagnetism, an absolute orientation detection means for detecting an absolute orientation based on geomagnetism, an absolute position detected by the absolute position detection means and the absolute orientation. A position / orientation detecting means for performing position detection based on the acceleration information from the acceleration sensor based on the absolute azimuth detected by the detecting means, and for detecting the azimuth based on the rotation information from the piezoelectric gyro. 9. The optical visual device according to claim 7, wherein the transmitting unit wirelessly transmits the position detection output and the direction detection output from the position and direction detecting unit.