JPH0827439B2 - Laser pointer - Google Patents

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a laser pointer, and more particularly, it relates to a laser pointer for pointing a sentence or drawing written or pasted on a whiteboard or the like with an optical mark.

[0002]

2. Description of the Related Art FIG. 11 is a perspective view of an example of a conventional laser pointer. In this laser pointer 900,
Reference numeral 91 is a laser beam emitting portion having a beam emitting portion 92 at the tip. A grip portion 93 is attached to the laser beam emitting portion 91 by a rotating portion 94. Further, the grip part 93 is provided with a switch 95 for turning on / off the operation of the laser beam emitting part 91.

The laser used for the laser pointer 900 is a visible light semiconductor laser, and its wavelength is 670n.
m. The instructable distance is 30 m or more. The beam diameter is about 7 mm at 3 m.

Next, a usage mode of the laser pointer 900 will be described. In the case of explaining to the audience using the whiteboard H, as shown in FIG. 12, when the user U holds the laser pointer 900 and turns on the switch 95, the beam B is emitted from the beam emitting unit 92. Therefore, the user U points the beam B toward the whiteboard H and projects a spot light spot P to indicate a spot of interest.
Since the grip portion 93 also has a function as a stand, it is possible to place a laser pointer 900 on a desk or the like to point to a point of interest.

[0005]

In the conventional laser pointer 900 described above, for example, when the user U wants to point a line in the sentence as a point of interest, the laser pointer 900 is moved to trace the line with the spot light spot P. There is a need. However, since the spot light spot P is small, when the laser pointer 900 is moved, the spot light spot P is lost. On the other hand, it is conceivable that the diameter of the beam B is expanded by a lens to form a disc-shaped optical mark, but the disc-shaped optical mark is dark as a whole (light becomes thin), In a relatively bright place, there is a problem that it becomes invisible. Then, the objective of this invention is providing the laser pointer which can project a bright and conspicuous mark.

[0006]

Means for Solving the Problems] In a first aspect, the originating
As a matter of fact, the vibrating means is attached to a supporting member that supports the laser beam emitting portion, and the vibration causes the laser beam emitting portion to move to the base.
Rutotomoni was basically the swung in a circular shape, the actual vibration of the support member
The range of motion is at least one of ellipse, circle, square, and triangle
The vibration range regulating means for regulating the two-dimensional shape of the
Characterized by drawing at least one 2D line figure of
To provide a laser pointer .

According to a second aspect, the present invention supports a laser beam emitting portion so that it can vibrate, and vibrates the laser beam emitting portion by vibrating means to swing the laser beam emitting portion in a circular shape. , Laser beam projection spot circle
Laser beam characterized by drawing a two-dimensional line figure
Provide an interface . In a third aspect, the present invention is to vibrate supporting the laser beam emitting portion, the laser beam
A cylindrical member is attached to the emitting part and the eccentricity is
The tapered surface of the tapered eccentric shaft provided inside the cylindrical member
Contact the surface and rotate the taper eccentric shaft to
Swing the beam emitting part in a circular shape to project the laser beam.
Provided is a laser pointer, which is characterized in that a circular two-dimensional line figure is drawn with a dot.

[0008]

In the laser pointer according to the first aspect , the vibrating means is attached to the supporting member that supports the laser beam emitting portion, and the vibration causes the laser beam emitting portion to basically move in a circular shape.
Shake it into a shape . On the other hand, by providing vibration range regulation means,
Vibration range of at least one of ellipse, circle, square, and triangle
Regulate to one two-dimensional shape . Then, ellipse projected punctate light spots corresponding to the shape of the oscillation range, a circle, a square,
Draw at least one 2D line figure of the triangle . This
Of these, for example, an ellipse was projected from the oblique direction toward the wall
Suitable for drawing a circular mark even if it looks
It

With the laser pointer according to the second aspect,
Vibrates the laser beam emitting part by vibrating means.
Then, the laser beam emitting portion is swung in a circular shape. Then throw
The emitted spot light spot draws a circular two-dimensional line figure.
The circular two-dimensional line drawing drawn in this way is bright and
It becomes a prominent mark.

With the laser pointer according to the third aspect ,
Supports the laser beam emitting part so that it can vibrate, and
Taper surface of the eccentric shaft that is eccentrically provided on the rotating shaft,
Contact with the inner surface of the cylindrical member attached to the laser beam emitting part
Let The laser is rotated by rotating the taper eccentric shaft.
The beam emitting part is swung circularly to project the laser beam.
Have the pot draw a circular two-dimensional line drawing . The circular two-dimensional line figure drawn in this way becomes a bright and well-marked mark.

[0011]

The present invention will be further described below with reference to the embodiments shown in the drawings. The present invention is not limited to this.

First Embodiment FIG. 1 is an explanatory view of the essential parts of a laser pointer according to the first embodiment of the present invention. The laser pointer 100 includes a light source unit 1
01 and the power supply unit 102.

The light source unit 101 includes a laser beam emitting unit 1, a support shaft 2 for supporting the laser beam emitting unit 1, a vibrating unit 3 attached to the support shaft 2, and a predetermined portion of the support shaft 2. It comprises a support shaft holding plate 4 for holding, a vibration restricting part 5 for restricting the range of vibration by the vibrating part 3, and a light source part case 6. A pin 9 is planted on the rear bottom of the light source case 6. The laser beam emitting unit 1 includes a laser diode 11, a lens 12, and a light emitting unit case 13. A damper body 14 that allows the vibration of the light emitting unit case 13 is interposed between the light emitting unit case 13 and the light source unit case 6. The support shaft 2
Is made of plastic. The vibrating section 3 includes a motor 3
1 and a flywheel 33 eccentrically provided on the rotating shaft 32 thereof. The support shaft holding plate 4 is a metal plate and holds the support shaft 2 via an elastic body such as rubber. The vibration restricting portion 5 includes a restricting member 51 that contacts the side surface of the motor 31, and a lever 52 that slides the restricting member 51 through an elongated hole 61 to adjust the degree of contact of the restricting member 51 with the side surface of the motor 31. It consists of

The power supply unit 102 comprises a battery 7, a laser diode drive circuit board 8 and a power supply unit case 16. The slot 10 is provided on the rear side of the power supply case 16.
Is provided. By fitting the pin 9 of the light source case 6 into the groove 10 of the power supply case 16, the light source 101 is attached to the power supply 102 so that the angle can be changed. In addition, the pin 9 and the slot 10 are used for supplying power to the laser diode 1 and the motor 31.
01 is a contact that electrically connects the power source unit 102.

The wavelength of the laser used for the laser pointer 100 is 670 nm. The output is less than 1 mW and the usable distance is 30 m or more. The beam diameter is about 7 mm at 3 m.

FIG. 2 is an external view of the laser pointer 100. 62A is a beam switch and 62B is a vibration switch (not shown in FIG. 1). As shown in the figure, since the power supply section 102 has a function as a stand, the laser pointer 100 can be placed on a desk or the like for use. Of course, the power supply unit 102 can also be used as a grip by holding it like a pistol (FIG. 4).

Next, the operation of the laser pointer 100 will be described. When the beam switch 62A is turned on,
The laser beam emitting unit 1 emits a laser beam B. When the vibration switch 62B is turned on, the vibrating section 3 vibrates circularly. The circular vibration of the vibrating section 3 is transmitted to the laser beam emitting section 1 through the support shaft 2, and the laser beam emitting section 1 also circularly vibrates. Therefore, as shown in FIG. 2A or FIG. 3A, the laser beam B draws a circle, and a circular line-shaped optical mark can be projected. Here, when the lever 52 is slid, the circular vibration of the vibrating portion 3 is regulated and the vibration becomes elliptical. Therefore, as shown in FIG. 3B, an optical mark having an elliptical line pattern can be projected. When the lever 52 is further slid, a linear line-shaped optical mark can be projected as shown in FIGS. Vibration switch 62B
When is turned off, the vibrating section 3 is stopped to form a spot light spot.

In FIG. 4, the user U makes a laser pointer 100.
With the hand held, the light mark L having a linear line shape is projected on the whiteboard H. B2 is a laser beam that is linearly oscillating. When the lever 52 is slid, it can be changed to a circular or elliptical line-shaped optical mark. Further, when the vibration switch 62B is turned off, it can be changed to a spot light spot.

According to the above laser pointer 100, it is possible to project a bright and well-marked optical mark even with the laser diode 11 having a small output. Therefore, even if the laser pointer 100 is moved, the optical mark will not be lost. Also, the light mark can be seen well even in a relatively bright place.

-Second Embodiment- FIG. 5 is a sectional explanatory view of a light source unit 103 according to a second embodiment of the laser pointer of the present invention. As the power supply unit, the power supply unit 102 described in the first embodiment can be used as it is. In the light source section 103, 1 is a laser beam emitting section, 2 is
Is a support shaft, 3 is a vibrating part, and 6 is a light source part case.
The components are the same as the components described in the embodiments. Four
Reference numeral 4 is a rubber support shaft holding plate.

Reference numerals 53, 54 and 55 are vibration restricting portions.
As shown in FIG. 6, the vibration restricting portion 53 restricts one direction of vibration of the support shaft 2 by the parallel contact surface 53 ′. Therefore, it is possible to project an elliptical or linear optical mark having a different minor axis by pressing the vibration regulation portion 53. The vibration regulation unit 54 is shown in FIG.
As shown in (2), the two directions in which the vibration of the support shaft 2 intersects at right angles is restricted by the rectangular frame contact surface 54 '. Therefore, it is possible to project a square optical mark having a different size by pressing the vibration regulating portion 54. As shown in FIG. 8, the vibration restricting portion 55 restricts the vibration of the support shaft 2 with the triangular frame contact surface 55 ′.
Therefore, it is possible to project triangular light marks of different sizes by pushing the vibration regulation portion 55.

According to the laser pointer of the second embodiment described above, in addition to the effect of the laser pointer 100 of the first embodiment, it becomes possible to project a special-shaped optical mark.

Further, if the shape of the vibration regulating portion is changed, it is possible to project an optical mark having a line shape such as a hexagon.

-Third Embodiment- FIG. 9 is an explanatory view of a main part of a laser pointer according to a third embodiment of the present invention. The laser pointer 200 includes a laser beam emitting part 21, a vibrating part 23 provided at an end of the laser beam emitting part 21, a vibration restricting part 25 for restricting a range of vibration by the vibrating part 23, and a laser beam emitting part. Part 2
1, a power supply unit 27 that supplies electric power to the vibration unit 23, a beam switch 28A and a vibration switch 28B, and a case 2
It consists of 6. The laser beam emitting unit 21 is
It includes a laser diode 211, a lens 212, and a light emitting unit case 213. A damper body 214 that allows the vibration of the light emitting unit case 213 is interposed between the light emitting unit case 213 and the light source unit case 26. The vibrating portion 23 includes a motor 231, a taper eccentric shaft 233 eccentrically provided on a rotation shaft 232 thereof, and a cylindrical member 234. These taper eccentric shaft 233 and cylindrical member 2
34 is made of plastic. The vibration regulation unit 25
Is a support member 251 planted on the side surface of the motor 231.
And the outer surface of the tapered eccentric shaft 233 and the cylindrical member 23.
4 and a lever 252 which is slid to adjust the contact portion with the inner surface of 4 and is attached to the supporting member 251 through the slot 261.

Next, the operation of the laser pointer 200 will be described. When the beam switch 28A is turned on,
The laser beam emitting unit 21 emits the laser beam B.
When the vibration switch 28B is turned on, the motor 231
As shown in FIG. 10A, the outer surface having the taper angle of the taper eccentric shaft 233 and the cylindrical member 23 rotate.
The vibrating portion 23 vibrates circularly depending on the amount of contact with the inner surface of the vibration element 4. The circular vibration of the vibrating section 23 is caused by the laser beam emitting section 2
1, and the laser beam emitting portion 21 also vibrates circularly. For this reason, the laser beam B draws a circle and a circular line-shaped optical mark can be projected. Here, when the lever 252 is slid in the α direction, the circular vibration of the vibrating portion 23 increases due to the adjustment of the contact. Therefore, as shown in FIG. 10 (b), a larger circular line-shaped optical mark can be projected.
When the lever 252 is slid further in the α direction,
As shown in (c) of 0, a larger circular line-shaped optical mark can be projected. When the vibration switch 28B is turned off, the vibrating section 23 stops and a spot light spot is formed.

According to the above laser pointer 200, it is possible to project a bright and well-marked optical mark even with the laser diode 211 having a small output. Therefore, even if the laser pointer 200 is moved, the optical mark will not be lost. Also, the light mark can be seen well even in a relatively bright place.

-Other Embodiments- As another embodiment, there is one in which an electromagnetic vibrator is used as the vibrating section 3.

[0028]

According to the laser pointer of the present invention, it is possible to project a bright and well-marked optical mark even with a laser diode having a small output. Therefore, the light mark is never lost. In a relatively bright place,
The light mark can be seen better.

[Brief description of drawings]

FIG. 1 is a partially cutaway perspective view of a laser pointer according to a first embodiment of the present invention.

FIG. 2 is an external view of the laser pointer shown in FIG.

FIG. 3 is an explanatory diagram showing a shape of a mark.

FIG. 4 is an explanatory diagram showing how the laser pointer shown in FIG. 1 is used.

FIG. 5 is an explanatory view of a main part of a light source section according to a second embodiment of the present invention.

FIG. 6 is an explanatory diagram of a vibration regulation unit and marks.

FIG. 7 is another explanatory diagram of a vibration regulation portion and a mark.

FIG. 8 is a further explanatory view of a vibration regulation portion and a mark.

FIG. 9 is a partially cutaway perspective view of a laser pointer according to a third embodiment of the present invention.

FIG. 10 is an explanatory diagram of a vibrating portion and marks in FIG.

FIG. 11 is a perspective view of an example of a conventional laser pointer.

FIG. 12 is an explanatory diagram showing a usage state of the laser pointer of FIG. 11.

[Explanation of symbols]

 100 laser pointer 101 light source part 102 power source part 1 laser beam emitting part 2 supporting shaft 3 vibrating part 4,44 supporting shaft holding plate 5 vibration regulating part 6 light source part case 7 battery 8 laser diode drive circuit board 9 pin 10 groove part 11 laser diode 12 lens 13 light emitting part case 14 damper body 31 motor 32 rotating shaft 33 flywheel 51 restricting member 52 lever 61 long hole 200 laser pointer 21 laser beam emitting part 23 vibrating part 25 vibration restricting part 26 case 27 power supply part 28A beam switch 28B Vibration switch 211 Laser diode 212 Lens 213 Light emitting part case 214 Damper body 231 Motor 232 Rotating shaft 233 Tapered eccentric shaft 234 Cylindrical member 251 Supporting member 252 Lever 261 Long hole

Claims (4)

[Claims] 1. A mounting a vibration means to a support member for supporting the laser beam emitting portion, Rutotomoni essentially swung in a circle with the laser beam emitting portion by the vibration of said supporting member
The actual vibration range is less than ellipse, circle, square, or triangle.
Both are equipped with a vibration range control means for controlling the two-dimensional shape.
The laser beam projection spot is an ellipse, circle, square, or three.
A laser pointer characterized by being able to draw at least one two-dimensional line figure of a corner . 2. The laser pointer according to claim 1 , wherein the vibrating means comprises a motor and a flywheel eccentrically provided on a rotation shaft of the motor. 3. A laser beam emitting portion is oscillatably supported, and the laser beam emitting portion is vibrated by vibrating means to swing the laser beam emitting portion in a circular shape so that a laser beam projection spot is formed. A laser pointer characterized by being able to draw a circular two-dimensional line figure. 4. A laser beam emitting part is oscillatably supported, and a cylindrical member is attached to the laser beam emitting part,
The taper of the eccentric shaft
Contact the inner surface of the cylindrical member with the taper eccentric shaft.
The laser beam emitting part is swung circularly by rotating the
Draw a circular two-dimensional line figure with the projected spot of the laser beam
A laser pointer that is characterized by making it possible.