TWI390480B - Laser imaging device - Google Patents

Description

Laser imaging device

The present invention relates to an imaging device, and more particularly to a laser imaging device.

As shown in FIG. 1, a conventional laser imaging apparatus (for example, a laser pen commonly used in briefing occasions) has a metal sheet 11, a laser light source 12, a frequency adjuster 13, and a piezoelectric ceramic. a sheet 14, a bent surface 111 is formed on the metal sheet 11, and the curved surface 111 is polished (or attached with a reflective material) to reflect the laser beam of the laser source 12 (eg The piezoelectric ceramic sheet 14 is attached to the metal sheet body 11 and electrically connected to the frequency adjuster 13 to adjust the piezoelectric ceramic sheet by the frequency adjuster 13 (shown by the imaginary line in the figure). a resonance frequency of 14 is further shifted or deformed by the metal sheet body 11, so that the laser beam reflected by the bending surface 111 can be in a straight line or a circle shape according to the corresponding displacement or deformation of the metal sheet body 11. Projected.

However, the above-mentioned laser imaging apparatus has only two projection shape modes, and although it is suitable for briefing occasions, when it is used for other occasions requiring an entertainment effect, its relatively limited projection shape change does not produce effective visual entertainment. Sexuality, and lack of the ability to generate images in synchronization with external elements (such as music, video), so that it can not be applied to areas that require entertainment.

Therefore, the object of the present invention is to provide a music that can be used with the outside world. A laser imaging device that projects a variety of image changes.

Therefore, the laser imaging apparatus of the present invention comprises: a pedestal, a signal generating unit, a sound source for outputting an audio signal, a control unit, a selecting unit, a piezoelectric actuator, and a reflecting sheet. And a laser source.

The signal generating unit is disposed on the base and generates a first signal.

The control unit is disposed on the base and electrically connected to the signal generating unit and the external sound source. The control unit can generate a second signal according to the first signal or the sound signal and output the second signal.

The selection unit is disposed on the base and electrically connected to the control unit for selecting a manner in which the control unit processes the first signal or the audio signal to generate a corresponding second signal.

The piezoelectric actuator is disposed on the base and electrically connected to the control unit to receive the second signal output by the control unit, and generates a corresponding deformation according to the second signal.

The reflective sheet is disposed on the piezoelectric actuator and deforms correspondingly with the piezoelectric actuator.

The laser light source is disposed on the pedestal, and a laser beam is projected onto the reflective sheet and reflected by the reflective sheet to be projected by the reflective sheet according to the deformation generated by the second signal. Corresponding shape of the laser light.

The effect of the present invention is to use the control unit to receive the first signal of the signal generating unit to convert the first signal into a voltage that can be used to make the voltage The electric actuator generates a second signal corresponding to the deformation, so that the reflective sheet is deformed along with the piezoelectric actuator, so that the reflected laser beam can produce a light shape change according to the sound signal.

The above and other technical contents, features and advantages of the present invention will be apparent from the following detailed description of the preferred embodiments of the invention.

Before the present invention is described in detail, it is noted that in the following description, like elements are denoted by the same reference numerals.

As shown in FIG. 2 and FIG. 3, the first preferred embodiment of the laser imaging apparatus 2 of the present invention comprises: a base 21, a signal generating unit 20, a control unit 22, a piezoelectric actuator 23, and a The reflective sheet 24, a retroreflective sheeting 27, a refractive element 26, a laser source 25, a port 29, and a selection unit 28.

The signal generating unit 20 is disposed on the base 21 and can generate a first signal 201. The connection port 29 is disposed on the base 21 and electrically connected to the control unit 22 and an external sound source 100 capable of outputting the sound signal 101. It should be noted that the above-mentioned external sound source 100 can be a music playing device such as an audio, a computer, or a Walkman, and the output interface and signal specifications thereof should be well-known technologies in the industry, and will not be described herein.

It should be noted that in this embodiment, since the source 100 of the output sound signal 101 is used as the source of the signal, the signal generating unit 20 does not operate.

The control unit 22 is disposed on the base 21 and is connected by the connection The sound signal 101 of the external sound source 100 is received, and the sound signal 101 output by the external sound source 100 is processed to output a second signal 221 . In this embodiment, the control unit 22 generates the second signal 221 of different frequencies according to the frequency segment of the audio signal 101, for example, when the frequency of the audio signal 101 is in the frequency range of 100 Hz to 1 kHz. The second signal 221 generated by the control unit 22 is a 100 Hz sine wave. When the frequency of the audio signal 101 is in the frequency range of 1 kHz to 2 kHz, the second signal 221 generated by the control unit 22 is A sine wave of 200 Hz is applied, and so on, so that the second signal 221 is changeable corresponding to the sound signal 101, and is output to the piezoelectric actuator 23 to cause a corresponding deformation.

It should be noted that, in this embodiment, the frequency of the second signal 221 is determined according to the frequency of the audio signal 101. However, the amplitude of the audio signal 101 may also be used to determine the second signal 221. Frequency, in addition, in this embodiment, the frequency of converting the second signal 221 is used, but the amplitude or phase of the second signal 221 may be changed, depending on actual implementation considerations, and thus It is not limited to the specific aspects disclosed in the embodiment.

In addition, the embodiment can further cooperate with a selection unit 28 disposed on the base 21 and electrically connected to the control unit 22. The selection unit 28 selects the processing unit 22 to process the audio signal 101, so that the control unit 22 can select the processing unit 22 to process the audio signal 101. Corresponding second signal 221 is generated for the user to determine the frequency, amplitude or phase of the second signal 221 according to the frequency or amplitude of the sound signal 101, thereby selecting the piezoelectric actuator 23 drive mode.

The circuit structure and the operation means capable of achieving the above functions are familiar to those of ordinary skill in the art, and will not be described herein.

The piezoelectric actuator 23 is disposed on the base 21 and electrically connected to the control unit 22 to receive the second signal 221 output by the control unit 22, and generates a corresponding deformation according to the second signal 221. In this embodiment, the piezoelectric actuator 23 is a piezoelectric ceramic piece and can generate corresponding deflection deformation or oscillation according to the amplitude, frequency, polarity, or phase of the input signal.

The reflection sheet 24 has a body portion 241, a reflection portion 242 connected to the body portion 241 and forming an angle with the body portion 241, and a notch 243 formed on the reflection portion 242. The actuator 23 is disposed on the body portion 241. When the piezoelectric actuator 23 is deformed or vibrated according to the second signal 221, the body portion 241 and the reflecting portion 242 are interlocked to be deformed, displaced or shaken, and formed on the reflecting portion 242. There is a notch 243, which causes the reflecting portion 242 to be weaker due to the overall structure, and is not symmetrical, so that the amplitude of the oscillation is greater.

The laser source 25 is disposed on the pedestal 21 and projects a laser beam onto the reflective portion 242 of the reflective sheet 24 and is reflected by the reflective sheet 24 according to the second signal 221 The laser light is deformed or oscillated to project a correspondingly shaped laser light, and the apparatus for generating the laser light source 25 should be a well-known technique in the industry, and will not be described here.

It is to be noted that, in this embodiment, a reflective sheet 27 made of a reflective material is attached to the reflecting portion 242 of the reflective sheet 24. In a manner of reflecting the laser beam projected from the laser light source 25, the natural reflective property of the reflection sheet 24 (for example, the reflection sheet 24 made of metal) may be utilized, and the reflection sheet 24 may be used. The reflection portion 242 performs a polishing process to reflect the laser beam generated by the laser light source 25.

The refracting element 26 is disposed on the pedestal 21 and located on the path of the laser beam after reflection, so that the laser light reflected by the illuminating sheet 27 is refracted through the refracting element 26 Projecting outside the susceptor 21 produces a further change in shape due to the optical refraction effect of the refractive element 26. In the present embodiment, the refractive element 26 is a concave lens to achieve a scattered light shape, but as to the shape or refractive index of the lens or frog mirror to be used in actual implementation, depending on the desired visual effect. Therefore, it should not be limited to the aspects disclosed in the embodiment.

Referring to FIG. 4, the preferred embodiment is mounted on a car 200 and integrated with the sound system of the car 200 to project a laser beam that changes with music onto the road (ground) surface, thereby generating glare. The visual effect.

With the above design, the laser imaging apparatus 2 of the present invention has the following advantages:

1. It can be projected according to the music, and the visual entertainment is good:

The sound signal 101 is processed by a predetermined condition, so that the deformation and oscillation of the piezoelectric actuator 23 can be changed along with the sound signal 101, so that it can be generated in accordance with the frequency or volume of the music. Interactive pattern changes to allow viewers to see projected images that change with music while listening to music, making the invention suitable for use in heights In effects/visual integration and entertainment, such as parties, nightclubs, or modified cars (as shown in Figure 4).

2. Optical variability is good:

In the present invention, the projected laser beam can be further optically adjusted by the refractive element 26, for example, using a concave, convex lens or a frog mirror to achieve the corresponding optical refraction effect, so that the projected laser beam is projected. More versatile.

2 and 3, the second preferred embodiment of the laser imaging apparatus 2 of the present invention is substantially the same as the first preferred embodiment, and the similarities are no longer in common, wherein the difference is that the control The unit 22 receives the first signal 201 of the signal generating unit 20, and processes the first signal 201 to output a second signal 221. In this embodiment, the control unit 22 generates the second signal 221 of different frequencies according to the frequency segment of the first signal 201. However, the amplitude of the first signal 201 may also be used to determine the second signal. In the present embodiment, the frequency of the second signal 221 is used, but the amplitude or phase of the second signal 221 may be changed, depending on the actual implementation considerations. Therefore, it is not limited to the specific aspects disclosed in the embodiments.

In this embodiment, the first signal 201 generated by the signal generating unit 20 is used as the source of the signal, so that the embodiment can be actuated without the need to cooperate with the external sound source 100.

Of course, in this embodiment, the selection unit 28 can also be used for the user to select the frequency, amplitude or phase of the second signal 221 according to the frequency or amplitude of the first signal 201, thereby selecting The piezoelectric The drive mode of the actuator 23.

In summary, the laser imaging device 2 of the present invention receives the external sound source 100 by using the control unit 22 and performs corresponding processing so that the piezoelectric actuator 23 can control the corresponding deformation or oscillation, and interlocks the The body portion 241 of the reflective sheet 24 causes the reflecting portion 242 to vibrate, so that the reflected laser beam is shaped corresponding to the sound signal 101 of the external sound source 100, and is adjusted by the refractive element 26. It projects the light shape to achieve good sound/visual integration and entertainment, so it can achieve the purpose of the present invention.

The above is only the preferred embodiment of the present invention, and the scope of the invention is not limited thereto, that is, the simple equivalent changes and modifications made by the scope of the invention and the description of the invention are All remain within the scope of the invention patent.

2‧‧‧ Laser imaging device

20‧‧‧Signal generating unit

201‧‧‧ first signal

21‧‧‧Base

22‧‧‧Control unit

221‧‧‧second signal

23‧‧‧ Piezoelectric Actuator

24‧‧‧reflector

241‧‧‧ Body Department

242‧‧‧Reflection Department

243‧‧ ‧ gap

25‧‧‧Laser light source

26‧‧‧Reflective components

27‧‧‧Reflecting film

28‧‧‧Selection unit

29‧‧‧Connected

100‧‧‧ outside source

101‧‧‧Sound signal

200‧‧‧Car

1 is a top plan view showing a conventional laser imaging apparatus; FIG. 2 is a top plan view showing first and second preferred embodiments of the laser imaging apparatus of the present invention; and FIG. 3 is a cross-sectional view showing the same 2 is a cross-sectional view of the cut line III; and FIG. 4 is a schematic view showing the state in which the first preferred embodiment is mounted on a car.

2. . . Laser imaging device

20. . . Signal generating unit

201. . . First signal

twenty one. . . Pedestal

twenty two. . . control unit

221. . . Second signal

twenty three. . . Piezoelectric actuator

twenty four. . . A reflective sheet

241. . . Body part

242. . . Reflection section

243. . . gap

25. . . Laser source

26. . . Refractive element

27. . . Reflective sheet

28. . . Selection unit

29. . . Connection

100. . . External source

101. . . Sound signal

Claims (11)

A laser imaging device includes: a pedestal; a signal generating unit disposed on the pedestal and generating a first signal; an external sound source for outputting an audio signal; and a control unit disposed at the base And a second signal is generated and outputted according to the first signal or the sound signal; a selection unit is disposed on the base, and is electrically connected to the signal generating unit and the external sound source. And electrically connected to the control unit for selecting the processing unit to process the first signal or the sound signal to generate a corresponding second signal; a piezoelectric actuator disposed on the base And electrically connected to the control unit to receive the second signal output by the control unit, and generate a corresponding deformation according to the second signal; a reflective sheet is disposed on the piezoelectric actuator, and The piezoelectric actuator generates a corresponding deformation; and a laser light source is disposed on the base, and a laser beam is projected onto the reflective sheet and reflected by the reflective sheet to be reflected by the reflective sheet According to the second No deformation arising from the projected shape of the laser beam corresponds. The laser imaging device according to claim 1, further comprising a refractive component disposed on the base, and the laser light reflected by the reflective sheet is refracted through the refractive component Rear Project again. The laser imaging apparatus according to claim 2, wherein the reflection sheet has a body portion, a reflection portion connected to the body portion and forming an angle with the body portion, and a reflection portion The notch on the reflecting portion is disposed on the body portion, and the laser beam projected by the laser light source is projected onto the reflecting portion and reflected. The laser imaging device according to claim 3, further comprising a reflective sheet made of a reflective material, the reflective sheet being attached to the reflecting portion to project the laser light source The laser beam is reflected off. A laser imaging apparatus according to claim 4, wherein the piezoelectric actuator is a piezoelectric ceramic sheet. The laser imaging device according to claim 1 or 5, wherein the control unit generates the second signal corresponding to the amplitude according to the first signal generated by the signal generating unit. The laser imaging device according to claim 1 or 5, wherein the control unit generates the second signal corresponding to the frequency according to the first signal generated by the signal generating unit. The laser imaging device according to claim 1 or 5, wherein the control unit generates the second signal corresponding to the phase according to the first signal generated by the signal generating unit. The laser imaging device according to claim 1 or 5, further comprising a connection port electrically connected to the control unit and the external sound source, wherein the control unit is based on the sound signal of the external sound source and Generating the second signal of the corresponding frequency. The laser imaging device according to claim 1 or 5, further comprising a connection port electrically connected to the control unit and the external sound source, wherein the control unit is based on the sound signal of the external sound source And generating the second signal corresponding to the amplitude. The laser imaging device according to claim 1 or 5, further comprising a connection port electrically connected to the control unit and the external sound source, wherein the control unit is based on the sound signal of the external sound source And generating the second signal of the corresponding phase.