JP4530914B2 - Laser pointer - Google Patents

Description

  The present invention relates to a laser pointer capable of controlling a personal computer for presentation and the like by radio wave communication while maintaining a posture in which an arbitrary position is irradiated with a laser beam and instructed.

  2. Description of the Related Art Conventionally, various types of laser pointers have been developed that are used in presentations, conferences, and the like, and illuminate and indicate a screen projected by, for example, a projector or an overhead projector (OHP). As such a laser pointer, a type that irradiates a red laser has been widely used until now, but recently, a green laser that has higher relative visibility than a red laser and is easily recognized by people who have difficulty in identifying colors. The type that irradiates is attracting attention.

In addition, a laser pointer that can be remotely operated not only to irradiate a laser beam but also to communicate with a predetermined electronic device using infrared rays in response to a predetermined operation of the user and change the display screen has been developed. Multifunctionalization is progressing. (For example, see Non-Patent Document 1)
KOKUYO Office Surprise Edition 2005 edition, KOKUYO S & T Co., Ltd., issued in December 2004, P.I. Various laser pointers shown in the upper and middle 246

  However, in such a case, in order to communicate with the electronic device, there is a problem that the irradiation of the laser beam must be stopped and the infrared light emitting portion of the laser pointer must be directed to the infrared light receiving portion of the electronic device. Yes.

  Therefore, in order to communicate with the electronic equipment in the laser irradiation posture instructed by irradiating an arbitrary position with a laser beam, when using a radio communication instead of the infrared, in this case, a circuit for radio communication If an antenna for radiating radio waves is provided in the vicinity, the circuit and the antenna interfere with each other in terms of radio waves, resulting in a problem that a sufficient communication distance cannot be secured.

  The present invention has been made paying attention to such a problem, and a main purpose thereof is to communicate with an electronic device in a laser irradiation posture, and to perform radio wave communication between a circuit for radio wave communication and an antenna. It is an object of the present invention to provide an excellent laser pointer capable of preventing a general interference, ensuring a sufficient communication distance with an electronic device, and reducing the size.

  That is, the laser pointer of the present invention is a laser pointer comprising a light emitting unit for emitting a laser beam and an antenna for radio wave communication with a predetermined electronic device, wherein the antenna is an irradiation path for the laser beam. It is characterized by surrounding.

  In such a case, since the antenna surrounds the laser beam irradiation path, radio waves can be emitted from the antenna without disturbing the irradiation even when the laser beam is being irradiated. For example, if the antenna is disposed on the distal end side of the laser pointer, and the radio communication circuit is disposed on the proximal end side of the laser pointer, the radio interference between the radio communication circuit and the antenna is preferably reduced. be able to. Further, if the antenna is, for example, a coil, it is possible to effectively reduce the size of the antenna while widening the reach of radio waves.

  That is, it is possible to communicate with the electronic device while maintaining the laser irradiation posture, and it is possible to prevent a radio wave interference between the radio wave communication circuit and the antenna and to secure a sufficient communication distance with the electronic device, An excellent laser pointer that can be made compact can be provided.

  In order to effectively shield unnecessary radiation (radio wave noise) of a circuit for radio wave communication and to ensure a sufficient communication distance with an electronic device, at least a part of the light emitting unit and a circuit for radio wave communication are provided. The built-in housing is preferably a member capable of shielding radio waves. Here, “shielding radio waves” is a concept that includes not only completely blocking radio waves but also attenuating radio waves.

  In addition, when the light emitting unit generates heat during irradiation with the laser beam, in order to promote the heat dissipation and stably irradiate the laser beam, the housing releases the heat generated by the light emitting unit. A metal member for urging is preferable.

  The light emitting unit includes a light emitting unit that emits a red laser beam and a wavelength converting unit that converts the red laser beam emitted from the light emitting unit into a green laser beam, and the wavelength converting unit and the casing Can be effectively dissipated in the wavelength conversion, so that a green laser beam that is easier to recognize than a red laser beam can be stably obtained. .

  As described above, according to the laser pointer of the present invention, since the antenna surrounds the irradiation path of the laser beam, even when the laser beam is being irradiated, the antenna emits radio waves without disturbing the irradiation. be able to. For example, if the antenna is disposed on the distal end side of the laser pointer, and the radio communication circuit is disposed on the proximal end side of the laser pointer, the radio interference between the radio communication circuit and the antenna is preferably reduced. be able to. Further, if the antenna is, for example, a coil, it is possible to effectively reduce the size of the antenna while widening the reach of radio waves.

  That is, it is possible to communicate with the electronic device while maintaining the laser irradiation posture, and it is possible to prevent a radio wave interference between the radio wave communication circuit and the antenna and to secure a sufficient communication distance with the electronic device, An excellent laser pointer that can be made compact can be provided.

  Hereinafter, an embodiment of the present invention will be described with reference to the drawings.

  As shown in FIG. 1, the laser pointer P according to the present embodiment mainly includes a housing 1, a distal end side cap member 2 that is detachably attached to a distal end portion of the housing 1, and a proximal end portion of the housing 1. A base end side cap member 3 that is detachably attached to the housing 1, and an internal mounting unit 4 that is provided in two layers with the first substrate 5 and the second substrate 6 mounted with the circuits 5 a and 6 a, respectively, and is attached to the inside of the housing 1. As a part of the internal mounting unit 4, the antenna A is provided on the distal end side of the internal mounting unit 4 and surrounded by the distal end side cap member 2.

  As shown in FIGS. 2, 3, and 4, the casing 1 is a metal member such as brass, for example, and has a substantially cylindrical pen shape having an internal space communicating in the longitudinal direction. The casing 1 is formed with switch holes 11, 12, 13, and 14 along the longitudinal direction for exposing switch covers C1, C2, C3, and C4, which will be described later, to the outside of the casing 1. . Specifically, a laser switch hole 11 having a substantially vertically long elliptical shape in a plan view, a page back switch hole 12 having a substantially horizontally long elliptical shape in a plan view, from a substantially intermediate position in the longitudinal dimension of the housing 1 toward the tip side, and A page next switch hole 13 and a mouse switch hole 14 having a circular shape in plan view are formed in this order. Although not shown, characters or symbols (for example, “Laser”, “Back”, “Next”, “Mouse”) that can intuitively understand the operation content corresponding to each switch 52, 53, 54 are provided in the vicinity of each hole formation location. It is displayed by engraving, printing or sticking of a seal body. Further, a window portion 15 having a substantially circular shape in plan view is formed further on the distal end side than the position where the mouse switch hole 14 is formed, and a lens body 16 is fitted into the window portion 15 so that the window portion 15 and the lens body are fitted. 16 is used to make it possible to visually recognize the light emission state of the light emitter 55 described later. Furthermore, the internal thread surface 17 in the base end part of the housing | casing 1 is formed with the internal thread part 17 which can be screwed with the external thread part 32a provided in the base end side cap member 3. As shown in FIG. Thus, a pair of support grooves 18 that extend continuously along the longitudinal direction and can support the first substrate 5 described later are formed in the inner peripheral surface portion of the housing 1. The pair of support grooves 18 are formed at positions facing each other, that is, at a position where the housing 1 can be equally divided into two in the radial direction, and the separation distance between the support grooves 18 is slightly larger than the inner diameter of the housing 1. It is trying to become. A pair of grooves 19 facing each other on a straight line that can be substantially orthogonal to a virtual straight line connecting the pair of support grooves 18 are formed along the longitudinal direction of the housing 1. It is formed for convenience when forming 1 (at the time of drawing), and does not play a role of supporting the first substrate 5. In the present embodiment, any one of the grooves 19 that do not play the role of supporting the first substrate 5 and the respective centers of the holes 11, 12, 13, 14 and the window portion 15 are substantially matched.

  The front end side cap member 2 has a substantially cylindrical shape opened only in one direction, and a fitting protrusion 21 (see FIG. 3) that can be fitted to the front end of the housing 1 is integrally provided on the open end side. Made of synthetic resin. While making the outer peripheral diameter of the front end side cap member 2 substantially coincide with the outer peripheral diameter of the casing 1, the outer peripheral diameter of the fitting protrusion 21 is set slightly smaller than the inner peripheral diameter of the casing 1, and the fitting protrusion 21 Is fitted into the front end of the housing 1 almost tightly, and the front end side cap member 2 is attached to the housing 1 by its frictional resistance. Further, a through-hole 22 for irradiating a laser beam (hereinafter referred to as a laser) is formed at the distal end portion of the distal end side cap member 2.

  The proximal end cap member 3 includes a cap main body 31 having a knob and a terminal member 32 that is press-fitted into the cap main body 31 and functions as a terminal of the battery B (see FIG. 3). The terminal member 32 is formed with a male screw portion 32 a that can be screwed into the female screw portion 17 formed on the inner peripheral surface of the base end portion of the housing 1.

  As shown in FIG. 5, the internal mounting unit 4 mainly includes a first substrate 5 on which a radio wave communication circuit 5a for communicating with a predetermined electronic device is mounted, and a circuit 6a for emitting a laser. A second substrate 6, a light emitting module 7 that emits green laser (corresponding to a “light emitting unit” of the present invention), and an antenna A are integrally provided.

  The first substrate 5 is a substantially plate-shaped substrate having a width dimension that substantially matches the distance between the pair of support grooves 18 formed on the inner peripheral surface portion of the housing 1. A radio communication circuit 5 a is mounted on the first substrate 5. Specifically, the page back switch 52, the page next switch 53, and the mouse switch 54 are mounted on the first substrate 5 in this order from the base end side, and the pressing force is applied to the switches 52, 53, 54. , A predetermined signal corresponding to each of the switches 52, 53, 54, that is, a screen return signal for switching a screen displayed on a display screen (not shown) to the previous screen, the same display screen A screen feed signal for switching the screen displayed on the screen to the next screen, a mouse pointer movement signal for moving the mouse pointer displayed on the display screen in a predetermined direction, using the radio wave, the electronic device To the receiver connected to or built in. In the present embodiment, an RF (Radio Frequency) method using radio waves in the 2.45 GHz frequency band is adopted as a communication method, and communication with an electronic device within approximately 10 meters is enabled.

  The second substrate 6 is set to have a width dimension and a longitudinal dimension smaller than those of the first substrate 5, and a circuit 6 a for emitting a laser is mounted on the second substrate 6. Note that whether or not to emit a laser is controlled by whether or not a pressing force is applied to the laser switch 51 mounted on the first substrate 5. In addition, a light emitter 55 that is turned on in conjunction with laser light emission is mounted on the first substrate 5. In the present embodiment, the light emitter 55 is mounted further on the tip side than the mounting position of the mouse switch 54.

  The first substrate 5 and the second substrate 6 having such a configuration are stacked in a state where they are separated from each other by a predetermined distance in the thickness direction with the central axes along the respective longitudinal directions being matched. The first substrate 5 and the second substrate 6 are connected in a stacked manner via connecting members R provided on the base end portion side and the distal end portion side, and mounted on the first substrate 5 using these connecting members R. The radio wave communication circuit 5a and the circuit 6a mounted on the second substrate 6 are electrically connected to each other.

  A spacer 8 made of, for example, a synthetic resin material and a spring member 9 that functions as a terminal of the battery B are integrally attached to the base end portion of the first substrate 5 by appropriate attachment means.

  The light emitting module 7 is provided at the tip of the first substrate 5, and a semiconductor laser light emitting element (not shown) (this semiconductor laser light emitting element corresponds to the “light emitting part” of the present invention) and the semiconductor laser light emitting element emit light. A light emitting module main body 71 that includes a wavelength conversion unit (not shown) that converts a red laser of 808 nm to a wavelength of 1064 nm and then further converts to a green laser of wavelength 532 nm, and a lens unit 72 provided on the laser emission side of the light emitting module main body 71. And the green laser emitted from the light emitting module main body 71 is irradiated through the lens unit 72. In the present embodiment, the light emitting module main body 71 is shared with the housing 1 in order to stably dissipate the heat generated when multiplying the 1064 nm laser to the 532 nm green laser and efficiently dissipate the green laser. The light emitting module main body 71 is formed in a substantially cylindrical shape, and the outer peripheral surface of the light emitting module main body 71 is inscribed in the inner peripheral surface of the housing 1. Further, a protective member 73 made of synthetic resin for protecting the lens portion 72 is provided.

  The antenna A includes a coiled part A1 that is wound in a coil shape so as to surround the light emission path of the green laser irradiated through the lens part 72 in a predetermined region on the distal end side of the light emitting module 7, and the coiled part A linear portion A2 extending substantially linearly to electrically connect one end of A1 to the radio wave communication circuit 5a mounted on the first substrate 5, and the coiled portion A1 emits light. A light emission path of the green laser emitted from the module 7 is secured, and a distance capable of wireless communication between the laser pointer P and the electronic device to which the receiver is connected or built-in is effectively earned.

  Hereinafter, a method of using the laser pointer will be described.

  When the user depresses the laser switch cover C1, the laser pointer P is given a depressing force to the laser switch 51, is irradiated through the lens portion 72 of the light emitting module 7, and the front end of the front end side cap member 2 is irradiated. An arbitrary position can be irradiated and instructed by the green laser that has passed through the through hole 22 formed in the part. During emission of the green laser, the light emitter 55 is turned on, and the lighting state can be visually recognized by the window portion 15 and the lens body 16 of the housing 1. Further, when the user presses the page back switch cover C2, the page next switch cover C3, or the mouse switch cover C4, the pressing force is applied to the corresponding switches 52, 53, 54, and the switches 52 , 53, 54 can be transmitted to an electronic device connected to or including the receiver using radio waves. In this case, since the metal housing 1 suitably shields unnecessary radiation (radio wave noise) of the circuit 5a for radio wave communication mounted on the first substrate 5 in particular, it effectively prevents radio wave interference due to this unnecessary radiation. can do. Moreover, since the periphery of the coil-shaped portion A1 of the antenna A is covered with the synthetic resin tip side cap member 2, the radio wave radiated from the antenna A is not attenuated unnecessarily. Therefore, a sufficient communication distance with the electronic device can be ensured.

  As described above, the laser pointer P according to the present embodiment is effectively reduced in size because the antenna A is coiled and disposed at a position surrounding the laser irradiation path on the tip side of the laser pointer P. On the other hand, even during laser irradiation, radio waves can be emitted from the antenna A without hindering the irradiation. In addition, it is possible to widen the range in which radio waves reach while suitably reducing radio wave interference with the radio wave communication circuit 5a mounted on the first substrate 5 disposed in the housing 1.

  That is, it is possible to communicate with the electronic device while maintaining the laser irradiation posture, and it is possible to sufficiently secure a communication distance with the electronic device by preventing radio wave interference between the radio wave communication circuit 5a and the antenna A, Further, an excellent laser pointer P that can be made compact can be provided.

  Further, since the housing 1 is made of brass, which is a metal member, unnecessary radiation (radio wave noise) of the radio wave communication circuit 5a mounted on the first substrate 5 is effectively shielded, and the communication distance with the electronic device is sufficient. In addition, when the light emitting unit generates heat during laser irradiation, it is possible to promote heat dissipation and stably irradiate the laser.

  The light emitting unit includes a semiconductor laser light emitting element that emits a red laser, and a wavelength converter that converts the red laser emitted from the semiconductor laser light emitting element into a green laser, and the wavelength converter Since the housing 1 is in contact with the case 1 so that heat can be transferred, heat generated during wavelength conversion can be effectively radiated, and a green laser that is easier to recognize than a red laser can be stably obtained.

  The present invention is not limited to the embodiment described in detail above.

  For example, a laser pointer that irradiates a red laser instead of a green laser may be used.

  Further, as a communication method, a communication method using radio waves other than the 2.45 GHz frequency band may be adopted.

  Further, a circuit for emitting laser light may be mounted on the first substrate, and a circuit for communicating with a predetermined electronic device (receiver) may be mounted on the second substrate.

  Further, in the above-described embodiment, an aspect in which two substrates are configured in a two-layer form is shown. However, the present invention is not limited thereto, and an aspect in which three or more substrates are stacked may be adopted. Also good.

  Moreover, although the housing is made of brass, which is a metal member, it may be made of synthetic resin.

  In addition, if the casing can shield radio waves, for example, the surface of the main body formed of synthetic resin is subjected to thin film metal processing, the material and configuration thereof are arbitrary. good.

  In addition, although the antenna is coiled, the shape can be arbitrarily changed.

  The casing may be a vertically long pen shape that can be gripped by the user, and may be a polygonal cylindrical shape in addition to a cylindrical shape, and a concave portion, a protruding portion, or a curved portion is formed in a part along the longitudinal direction. It may be a shape.

  In addition, the specific configuration of each part is not limited to the above embodiment, and various modifications can be made without departing from the spirit of the present invention.

1 is an overall perspective view of a laser pointer according to an embodiment of the present invention. The perspective view of the housing | casing in the embodiment. The figure which shows typically the longitudinal cross-section of the laser pointer which concerns on the embodiment. The figure which shows typically the XX sectional view in FIG. The whole schematic diagram of the internal attachment unit in the embodiment.

Explanation of symbols

A ... Antenna P ... Laser pointer 1 ... Case 5a ... Circuit for radio wave communication 7 ... Light emitting unit (light emitting module)

Claims (4)

  A laser pointer comprising a light emitting unit for emitting a laser beam and an antenna for radio wave communication with a predetermined electronic device, wherein the antenna surrounds an irradiation path of the laser beam. Laser pointer.   The laser pointer according to claim 1, wherein a housing containing at least a part of the light emitting unit and a circuit for radio wave communication is a member capable of shielding radio waves.   3. The laser pointer according to claim 2, wherein the casing is a metal member for promoting heat dissipation of heat generated in the light emitting unit.   The light emitting unit includes a light emitting unit that emits a red laser beam and a wavelength converting unit that converts the red laser beam emitted from the light emitting unit into a green laser beam, and the wavelength converting unit and the casing The laser pointer according to claim 3, wherein the laser pointer is contacted or connected so as to be capable of transferring heat.

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