JP2000028936A - Spot light projector - Google Patents

Abstract

PROBLEM TO BE SOLVED: To enable a presenter to freely use his or her both hands without shaking with respect to a spot light projector which is used for presentation with an OHP or a projector and performs projection on an arbitrary position of a screen. SOLUTION: This spot light projector which performs projection on an arbitrary position of the screen is provided with an X-Y coordinate input means 105, a light emitting means 3 which generates laser light, a deflecting reflection means 4 for two-dimensional deflection and reflection, and a control means 2 which controls this deflecting reflection means.

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to an apparatus for projecting position information from XY coordinate input means such as a mouse and a touch panel onto a screen, and more particularly to an apparatus for projecting spot light onto a screen.

[0002]

2. Description of the Related Art Conventional spot light projection is performed by an OHP using a spot illuminator such as a laser pointer or a small pointer.
It was used when giving presentations using a projector or projector.

FIG. 6 shows an image diagram of a conventional spot light projection for OHP presentation. 6, the conventional OHP projector includes an OHP 101, a screen 102, a laser pointer 103, a spot light Lo, and a presenter 200.

The OHP 101 sets an OHP manuscript sheet on a manuscript table, irradiates the contents of the manuscript with a light source from below the manuscript table, and projects the image on a screen 102 through a lens. The screen 102 projects images, videos, and the like by suspending from a ceiling made of white cloth or the like.

[0005] The laser pointer 103 is a portable device that emits laser beam light, and is a device that points a display point with a spot light Lo when explaining information displayed on the screen 102. The presenter 200
The presenter is an explanatory person who gives an explanation while pointing the enlarged image with the laser pointer 103.

Also, without using a laser pointer, O
In some cases, explanations may be given by pointing a point on a HP document with a stick or the tip of a mechanical pen. Presenter 200
Usually, a person alone performs work such as explanation, replacement of an OHP document, and projection of a spot light Lo.

[0007]

Conventional laser pointers used in OHPs, projectors, and the like are used by a person holding a hand and moving a spot light to a free position.
There is a problem in that the presenter's hand is always deprived of his or her hand's freedom, which makes it difficult to perform other tasks such as replacing a document.

[0008] Further, since the pointing operation is performed by hand, there is a problem that the spotlight moves due to camera shake and is difficult to see. In addition, when a conventional laser pointer is not used and a point is pointed with a stick or a mechanical pencil on an OHP document, an explanation may be given.
There is a problem that sticks and mechanical pens become shadows and are difficult to see.

SUMMARY OF THE INVENTION The present invention has been made to solve such a problem, and an object of the present invention is to provide a pointer capable of irradiating a spot light at an arbitrary specified position without holding a light source by hand. is there.

[0010]

According to the present invention, there is provided a spot light projection apparatus comprising: an XY coordinate input means; a light emitting means for generating a laser beam; And a control means for controlling the reflection means.

The spotlight projection device according to the present invention has a
-Y coordinate input means, light emitting means for generating laser light,
Since there is provided a reflecting means for deflecting and reflecting the light in the two-dimensional direction and a control means for controlling the reflecting means, it is possible to project a spotlight having no camera shake on an arbitrary position on the screen.

Further, the control means according to the present invention comprises:
It is characterized by comprising a coordinate input analyzing means and a deflection driving means.

Since the control means according to the present invention includes the XY coordinate input analysis means and the deflection driving means, it can output a spot light at a position corresponding to the coordinates.

The reflecting means according to the present invention is characterized in that an optical scanning element capable of deflecting and reflecting in a two-dimensional direction using a semiconductor process is provided with a reflecting mirror.

Since the reflecting means according to the present invention is provided with a reflecting mirror on an optical scanning element capable of deflecting and reflecting in a two-dimensional direction using a semiconductor process, a spot for deflecting and reflecting a fine spot light is projected. A light projection device can be realized.

[0016]

Embodiments of the present invention will be described below with reference to the accompanying drawings. The present invention provides a spotlight projection device capable of projecting the spotlight Lo to an arbitrary specified position without manually holding a light source with the position information input from the XY coordinate input device. Can be.

FIG. 1 is a conceptual drawing of the use of the spotlight projector according to the present invention. In FIG. 1, a usage image diagram of the spotlight projection device is an XY coordinate input unit 105.
, Point light emitting means 106, screen 102,
OHP101.

The same reference numerals as those in the conventional spotlight projection shown in FIG. 6 denote the same parts, and a description thereof will be omitted.
The OHP 101 is provided with an explanatory material explained by a presenter (not shown) set on a platen, and a screen 10.
2, the presenter can project the spot light Lo from the XY coordinate input device 105 on the explanation part.

The XY coordinate input means 105 is constituted by inputting XY coordinates such as a mouse, a touch panel, etc., and can indicate or designate an arbitrary point.

The point light emitting means 106 comprises a laser light emitting section, a deflection driving section, and a deflecting reflection section, and receives a coordinate signal A from an XY coordinate input means 105 such as a mouse or a touch panel.
s is input, converted into address information and driven for deflection, and a signal emitted by the laser light emitting unit is deflected and reflected by the deflecting reflector,
The light is projected on the screen 102.

At this time, the XY coordinate input means 105
Of the XY coordinate input unit 105 and the size of the screen 102, and the magnification is set. In FIG. 1, the XY coordinate input device 105 is used.
However, a transparent touch panel may be provided on the document table of the OHP 101, and the position may be input by touching the position with a bar or a finger instead of the XY coordinate input means 105.

FIG. 2 is an image diagram of a presentation using a personal computer. In FIG. 2, a presentation using a personal computer includes a personal computer 107, a mouse 108, a monitor 109, a point light emitting unit 106, a screen 102, and a projector 110. 6 and 1 are denoted by the same reference numerals, and description thereof is omitted.

The mouse 108 is connected to the personal computer 107 by XY.
The personal computer 107 is a device for inputting coordinates.
-Display position information corresponding to the Y coordinate as a cursor or an arrow on the monitor 109 screen.

The personal computer 107 displays position information from the mouse 108 on the monitor 109 and
7 to the point light emitting means 106 to supply the screen 1
02 is projected. At this time, the screen 102
By the output from the point light emitting means 106, the mouse 10
The arrow and the spotlight at the time of operating 8 are displayed at the same position.

The projector 110 is composed of an input unit for video and RGB, a light source, a liquid crystal shutter, and the like. The projector 110 projects a signal input from the input unit onto the screen 102.
, The same image as the monitor 108 is displayed on the screen 1.
02 can be projected. Further, a trackball, a touch panel input device, a tablet, a joystick, or the like may be used instead of the mouse 108.

FIG. 3 is a block diagram of a main part of the point light emitting means according to the present invention. In FIG. 3, the point light emitting means 106 includes a control means 2, a light emitting means 3, and a deflecting / reflecting means 4.

The control means 2 is composed of various arithmetic means, processing means, memories and the like based on a microprocessor, and generates a timing signal based on a reference clock and generates various control signals. When the coordinate signal Dn is input from the XY coordinate input means 105, the control means 2
A deflection drive angle is calculated by converting the address into an axial address, and a drive control signal Vk is output.

The light emitting means 3 is constituted by a light emitting element such as a semiconductor laser, for example, and emits continuous spot light Lo.

The deflecting / reflecting means 4 is an optical scanning element capable of deflecting and reflecting in a two-dimensional direction using a semiconductor process, and an example thereof is a galvanomirror. The deflecting / reflecting means 4 receives the spot light Lo from the light emitting means 3 and projects it on the screen 102. Further, the deflecting / reflecting means 4 receives the drive control signal Vk from the control means 2 and
The deflection drive in the X-Y axis direction is performed.

FIG. 4 is a block diagram of a main part of the control means according to the present invention. In FIG. 4, the control means 2
-Y coordinate input analysis means 5 and deflection drive means 6 are provided.

The XY coordinate input analyzing means 5 is composed of various arithmetic means, processing means, memory and the like based on a microprocessor. The coordinate signal D from the XY coordinate input means 105 is provided.
When n is input, it is converted into an address in the X-axis direction and the address in the Y-axis direction to calculate a deflection angle.
Is output.

When the XY coordinate input means 105 is a tablet, a touch panel, or the like, the position information of the touched point is output as it is. In the case of a mouse or a trackball, the direction of the ball is determined based on the initial cursor position. The number of points moved to is output.

The deflection driving means 6 is constituted by a signal generating means such as a sweep generator and the like, and the reflecting plate of the deflecting / reflecting means 4 is moved in the X-axis direction and the Y-axis It is driven to deflect in the direction.

FIG. 6 is a structural view of a galvanomirror used as a reflection means according to the present invention. In FIG. 6, a galvanomirror 30 includes a silicon substrate 32 which is a semiconductor substrate.
The upper and lower surfaces are sandwiched from above and below on an upper glass substrate 33 and a lower glass substrate 34 made of borosilicate glass or the like, and joined to form a three-layer structure.

The upper glass substrate 33 and the lower glass substrate 34 are provided with concave portions 33A and 34A formed by, for example, ultrasonic processing in the center, respectively.
In this case, the concave portions 33A and 34A are arranged so as to be on the silicon substrate 32 side. With such an arrangement, a swing space of the movable plate 35 on which the reflection mirror 38 is provided is formed, and a closed structure is provided.

The silicon substrate 32 is provided with a flat movable plate 35 composed of an outer movable plate 35A formed in a frame shape and an inner movable plate 35B supported by the inside of the outer movable plate 35A. The outer movable plate 35A includes the first torsion bar 3
6A and 36A, the inner movable plate 35B is supported by the first torsion bars 36A and 36A.
A second torsion bar 36B, 3 whose axial direction is orthogonal to A
At 6B, it is pivotally supported inside the outer movable plate 35A. The outer movable plate 35A, the inner movable plate 35B, the first torsion bar 36A, and the second torsion bar 36B are integrally formed on the silicon substrate 32 by anisotropic etching, and are formed of the same material as the silicon substrate 32.

A pair of outer electrode terminals 39A, 39A formed on the upper surface of the silicon substrate 32 are formed on the upper surface of the outer movable plate 35A.
A is formed by coating a planar coil 37A, which is electrically connected to both ends of the first torsion bar 36A via one portion of the first torsion bar 36A, with an insulating layer. On the other hand, the inner movable plate 35
B, a pair of inner electrode terminals 39B, 39B formed on the upper surface of the silicon
A planar coil 37B that is electrically connected to the first torsion bar 36A via the other portion of the first movable torsion bar 36A from the base coil 6B is covered with an insulating layer.

The plane coil 37A and the plane coil 37B are
It is formed by an electroformed coil method by electrolytic plating. The outer movable plate 35A and the inner electrode terminal 39B are connected to the silicon substrate 3
2 are formed simultaneously with the planar coils 37A and 37B by an electroformed coil method. A reflection mirror 38 is formed at the center of the inner movable plate 35B surrounded by the plane coil 37B.

On the upper glass substrate 33 and the lower glass substrate 34, two pairs of columnar permanent magnets 40A to 43A and 40B to 43B are arranged as shown in the figure. Opposing permanent magnets 40 on upper glass substrate 33
A, 41A and the opposing permanent magnets 40B, 41B of the lower glass substrate 34 form a planar coil 3 on the outer movable plate 35A.
A magnetic field acts on 7A, and the outer movable plate 35A is rotated by interaction with a drive current flowing through the planar coil 37A.

On the other hand, the opposing permanent magnets 42A and 43A of the upper glass substrate 33 and the opposing permanent magnets 42B and 43B of the lower glass substrate 34 apply a magnetic field to the planar coil 37B on the inner movable plate 35B, and The inner movable plate 35B is rotated by interaction with the drive current flowing through the coil 37B.

The facing permanent magnets 40A and 41A have opposite polarities, for example, the upper surface of the permanent magnet 40A is
If it is a pole, the upper surface of the permanent magnet 41A is arranged so as to be an N pole, and furthermore, the magnetic flux is arranged so as to cross in parallel with the plane coil portion of the movable plate 35. Other opposed permanent magnets 42A and 43A, permanent magnets 40B and 41B, permanent magnet 4
The same applies to 2B and 43B.

The permanent magnets 40A and 40 opposing each other in the vertical direction
The relationship with B is that the upper and lower polarities are the same, for example, the permanent magnet 40
If the upper surface of A is the S pole, the upper surface of the permanent magnet 40B is also arranged to be the S pole. Other vertically facing permanent magnets 41A and 41B, permanent magnets 42A and 42B, permanent magnet 4
3A and 43B are similarly arranged. Thereby, the movable plate 3
Forces act in opposite directions at both ends of 5.

On the lower surface of the lower glass substrate 34, detection coils 45A and 45B and detection coils 46A and 46, which are arranged so as to be electromagnetically coupled to the planar coils 37A and 37B, respectively.
B is formed in a pattern. Detection coil 45A, 45B
Are arranged symmetrically with respect to the first torsion bar 36A, and the detection coils 46A and 46B are arranged symmetrically with respect to the second torsion bar 36B.

The pair of detection coils 45A and 45B are for detecting the displacement angle of the outer movable plate 35A, and are generated based on a detection current flowing in superposition with a driving current flowing in the plane coil 37A. And detection coil 45
A, the mutual inductance with 45B is outside movable plate 35A
The displacement angle of the outer movable plate 35A can be detected from the mutual inductance change.

On the other hand, the pair of detection coils 46A and 46B can detect the displacement angle of the inner movable plate 35B in the same manner. The displacement of the outer movable plate 35A corresponds to, for example, the displacement in the X-axis direction, and the displacement of the inner movable plate 35B corresponds to the displacement in the Y-axis direction, whereby the two-dimensional displacement of the reflection mirror 38 becomes possible. .

As described above, since the deflecting / reflecting means 4 according to the present invention is a galvano mirror for deflecting and reflecting in a two-dimensional range using a semiconductor process, the spot light from the light emitting means 3 can be transferred to an arbitrary position on the screen. A spot light projection device capable of projecting light onto a spot can be realized.

[0047]

As described above, the spotlight projection device according to the present invention comprises an XY coordinate input means, a light emitting means for generating a laser beam, and a deflecting / reflecting means for deflecting and reflecting in a two-dimensional direction. And a control means for controlling the deflecting / reflecting means, so that a spotlight free from camera shake can be projected to an arbitrary position on the screen, and the presenter can use the hand freely, and the original explanation can be made. Can concentrate on

The control means according to the present invention comprises:
Since the coordinate input analyzing means and the deflection driving means are provided, a spot light can be output at a position corresponding to the coordinates, so that it is easy to see without a shadow or the like.

The deflecting / reflecting means according to the present invention is provided with a reflecting mirror on an optical scanning element capable of deflecting and reflecting in a two-dimensional direction using a semiconductor process. Can be realized.

[Brief description of the drawings]

FIG. 1 is a configuration image diagram of a spotlight projection device according to the present invention.

FIG. 2 Image of a presentation using a personal computer

FIG. 3 is a block diagram of a main part of the point light emitting means according to the present invention.

FIG. 4 is a block diagram of a main part of control means according to the present invention.

FIG. 5 is a configuration diagram of a galvanometer mirror used as a reflection unit according to the present invention.

FIG. 6 is an image diagram of a conventional spot light projection for presentation using an OHP.

[Explanation of symbols]

DESCRIPTION OF SYMBOLS 1 ... Spot light projection apparatus, 2 ... Control means, 3 ... Light emitting means, 4 ... Deflection reflecting means, 5 ... XY coordinate input analysis means, 6
... Deflection driving means, 30 ... Galvanomirror, 101 ... OH
P, 102: screen, 103: laser pointer, 1
05 ... XY coordinate input means, 106 ... point light emitting means, 107 ... personal computer, 108 ... mouse, 109 ... monitor, 110 ... projector, 200 ... presenter,
As: coordinate signal, Dn: coordinate signal, Lo: spot light,
Vh: deflection signal; Vk: deflection drive signal.

Claims (3)

[Claims] An XY coordinate input means, a light emitting means for generating a laser beam, a deflecting / reflecting means for deflecting and reflecting in a two-dimensional direction.
Control means for controlling the deflecting / reflecting means. 2. The spotlight projection device according to claim 1, wherein said control means comprises XY coordinate input analysis means and deflection driving means. 3. The spotlight projection according to claim 1, wherein said reflecting means is provided with a reflecting mirror on an optical scanning element capable of deflecting and reflecting in a two-dimensional direction using a semiconductor process. apparatus.