CN202600340U - Minisize scanning projector device with light source - Google Patents

Abstract

The utility model relates to a minisize scanning projector device with a light source, comprising a housing and a movable part the center of which is provided with a light source , wherein the movable part comprises a first group of side edges and a second group of side edges, the first group of the side edges of the movable part is provided with a Y-axis magnet, the second group of side edges is provided with an X-axis flexible mechanism connected with the housing, and inside the hosing there is provided a first group of electromagnetic ring corresponding to the Y-axis magnet. The minisize scanning projector device enables the Y-axis magnet and the light source to be arranged on the movable part, and the flexible mechanism to be arranged at the connection portion, thereby being large in scanning angle, high in frequency and small in noise.

Description

The miniscanning projection device of band light source

Technical field

The utility model relates to a kind of miniscanning projection device with light source, belongs to the scanning system technical field.

Background technology

At present; Traditional big machinery scanning for example scanning is shaken border, light show etc. because its volume is big, and uses device such as motor to make that the total system noise is bigger, and power consumption is higher; And the response time is longer, has limited the development of big machinery scanning and imaging.Popular MEMS micro mirror on the present market is because its complicated production and process make that the production time is long and production cost is higher; The angle that in a lot of documents and patent, all relates to scanning and projection is for example: Patrick B.Chu; Shi-Sheng Lee; And Sangtae Park, Tellium, Inc.The Path to Large Optical Cross connects; The MEMS micro mirror of mentioning among the IEEE Communications Magazine March 2002 have optical angle have only ± 10 °, problem such as the too little and frequency of scanning angle is low.

The utility model content

The utility model proposes the miniscanning projection device of the band light source that a kind of scanning angle is big, frequency is high and noise is little to the deficiency of the problems referred to above.

The utility model is that the technical scheme that solves the problems of the technologies described above proposition is: comprise that shell and center are provided with the movable member of light source; This movable member comprises first group of side and second group of side; On first group of side of said movable member, be provided with the Y axial magnet; And on second group of side, being provided with the X axle compliant mechanism that is connected with shell, portion is provided with and the corresponding first group of electromagnetic coil of Y axial magnet in the enclosure.

Further: arbitrary limit of said second group of side is provided with angular displacement sensor.

Preferably: said movable member is PCB; This PCB is provided with two-layer; Be provided with the coil that amplifies gradually from inside to outside at the PCB ground floor; And be respectively arranged with a pair of X axis magnet at one group of side of the PCB second layer, one side and arbitrary angular displacement sensor that is provided with of another group side is provided with light source at the middle part of the said PCB second layer.

Again further: also comprise Y axle compliant mechanism and outstanding frame; Should comprise first group of outstanding edge and second group of outstanding edge by outstanding frame; First group of outstanding edge of said Y axle compliant mechanism one end and outstanding frame joins; The other end and outer shell, and second group of outstanding edge of said X axle compliant mechanism one end and outstanding frame joins, the other end and second group of side join; And second group of outstanding edge of said outstanding frame is provided with X axis magnet; Portion is provided with and the corresponding second group of electromagnetic coil of X axis magnet in the enclosure.

Again more further: the both sides of said second group of side are respectively equipped with angular displacement sensor.

Preferably: said movable member is PCB; Said PCB is provided with two-layer; Be provided with the coil that amplifies gradually from inside to outside at the PCB ground floor; And be respectively arranged with a pair of X axis magnet at one group of side at the PCB second layer, and another group side is respectively equipped with angular displacement sensor, is provided with light source at the middle part of the said PCB second layer.

Preferred again: said X axis magnet is bonded on the movable member; The mode that perhaps said X axis magnet is magnetic material through electro-deposition, sputter is added on the movable member, perhaps said X axis magnet be permanent magnet or actuating arm through bonding, be bonded on the movable member.

The miniscanning projection device of the band light source of the utility model, because X-direction magnet, light source are arranged on the movable member, and adopt flexible structure in the coupling part, thereby its scanning angle is big, frequency is high and noise is little.

Description of drawings

Fig. 1 is the structural representation of the utility model embodiment 1;

Fig. 2 is the vertical view of Fig. 1;

Fig. 3 is 6 structural representation;

Fig. 4 is 4 structural representation;

Wherein, The 1-X axial magnet, 2-light source, 3-angular displacement sensor, 4-movable member, 41-coil, 5-shell, 6-enclosure, 61-electromagnetic coil, 7-Y axle compliant mechanism, first group of side of 8-, second group of side of 9-.

Fig. 5 is the structural representation of the utility model embodiment 2;

Fig. 6 is the vertical view of Fig. 5;

Fig. 7 is 6 structural representation;

Fig. 8 is 4 structural representation;

Wherein, The 1-X axial magnet, 2-light source, 3-angular displacement sensor, 4-movable member, 41-coil; The 5-shell, 6-enclosure, first group of electromagnetic coil of 61-, second group of electromagnetic coil of 62-; 7-X axle compliant mechanism, first group of side of 8-, second group of side of 9-, 10-hangs frame; 11-Y axle compliant mechanism, first group of outstanding edge of 12-, second group of outstanding edge of 13-, 14-X axial magnet.

Embodiment

Below in conjunction with accompanying drawing the utility model is described further.

Embodiment 1

The miniscanning projection device of the band light source of present embodiment is shown in Fig. 1～4: comprise that shell 5 and center are provided with the movable member 4 of light source 2; This movable member 4 comprises first group of side 8 and second group of side 9; On first group of side 8 of said movable member 4, be provided with Y axial magnet 1; And on second group of side 9, being provided with the X axle compliant mechanism 7 that is connected with shell 5, portion 6 is provided with and Y axial magnet 1 corresponding first group of electromagnetic coil 61 in the enclosure; The line of said two Y axial magnets 1 is vertical with the line of two X axle compliant mechanisms 7, and the line of the line of said two Y axial magnets 1 and two X axle compliant mechanisms 7 is all through light source 2;

For the accurately motion of control device, make scanning and imaging precision higher, arbitrary limit of said second group of side 9 is provided with angular displacement sensor 3.

In order to make movable member 4 rotational angles and frequency bigger; Said movable member 4 is PCB; Said PCB is provided with two-layer, is provided with the coil 41 that amplifies gradually from inside to outside at the PCB ground floor, and is respectively arranged with a pair of Y axial magnet 1 at one group of side of the PCB second layer; And arbitrary one side of another group side is provided with angular displacement sensor 3, is provided with light source 2 at the middle part of the said PCB second layer.

For Y axial magnet 1 better is arranged on the movable member 4; Said X axis magnet 1 is bonded on the movable member 4; Perhaps said X axis magnet 1 is added on the movable member 4 for the mode of magnetic material through electro-deposition, sputter, perhaps said X axis magnet 1 for permanent magnet or actuating arm through bonding, be bonded on the movable member 4.

During practical implementation, through the power of electric current and the up-down that direction is controlled Y axial magnet 1 in the control electromagnetic coil 61, and the interaction of two Y axial magnets 1 makes it on the Y direction, do one-way movement.Drive movable member 4 like this and make two dimensional motion; Two dimensional motion through movable member 4 drives light source 2 and makes two dimensional motion; Scan or form images, the motion of the accurate movable member 4 of feedback signal through angle displacement sensor 3 makes scanning and imaging precision higher.

Embodiment 2

The miniscanning projection device of the band light source of present embodiment is shown in Fig. 5～8: comprise that shell 5 and center are provided with the movable member 4 of light source 2; This movable member comprises 4 first groups of sides 8 and second group of side 9; On first group of side 8 of said movable member 4, be provided with Y axial magnet 1, also be connected with X axle compliant mechanism 7 at second group of side 9; Also comprise Y axle compliant mechanism 11 and outstanding frame 10, this outstanding frame 10 comprises first group of outstanding edge 12 and second group of outstanding edge 13, and first group of outstanding edge 12 of said Y axle compliant mechanism 11 1 ends and outstanding frame 10 joins, and the other end and shell 5 join; And second group of outstanding edge 13 of said X axle compliant mechanism 7 one ends and outstanding frame 10 joins, and the other end and second group of side 9 join; And second group of outstanding edge 13 of said outstanding frame 10 is provided with X axis magnet 14; Portion 6 is respectively equipped with and Y axial magnet 1 and X axis magnet 14 corresponding first group of electromagnetic coil 61 and second group of electromagnetic coil 62 in the enclosure; The line of said two Y axial magnets 1 is vertical with the line of two X axle compliant mechanisms 7, and the line of the line of said two Y axial magnets 1 and two X axle compliant mechanisms 7 is all through light source 2; The line of said two X axis magnet 14 is vertical with the line of two Y axle compliant mechanisms 11, and the line of the line of said two X axis magnet 14 and two Y axle compliant mechanisms 11 is all through light source 2.

For the accurately motion of control device, make scanning and imaging precision higher, the both sides of said second group of side 9 are respectively equipped with angular displacement sensor 3.

In order to make movable member 4 rotational angles and frequency bigger; Said movable member 4 is PCB; Said PCB is provided with two-layer, is provided with the coil 41 that amplifies gradually from inside to outside at the PCB ground floor, and is respectively arranged with a pair of X axis magnet 1 at one group of side at the PCB second layer; And another group side is respectively equipped with angular displacement sensor, is provided with light source 2 at the middle part of the said PCB second layer.

For Y axial magnet 1 better is arranged on the movable member 4; Said X axis magnet 1 is bonded on the movable member 4; Perhaps said X axis magnet 1 is added on the movable member 4 for the mode of magnetic material through electro-deposition, sputter, perhaps said X axis magnet 1 for permanent magnet or actuating arm through bonding, be bonded on the movable member 4.

During practical implementation; Through the power of electric current in control electromagnetic coil 61 and the electromagnetic coil 62 and the up-down that direction controls respectively Y axial magnet 1 and X axis magnet 14; And the interaction of two Y axial magnets 1 makes it on the Y direction, do one-way movement, and the interaction of two blocks of X axis magnet 14 makes it on directions X, do one-way movement.Drive movable member 4 like this and do three-dimensional motion, the three-dimensional motion through movable member 4 drives light source 2 and does three-dimensional motion, scans or forms images.

The principle of the miniscanning projection device of band light source of the present invention:

Utilize Ampere's law (left-hand rule):

$\mathrm{dB}=N\frac{{\mathrm{\&mu;}}_0}{4\mathrm{\&pi;}}\&CenterDot;\frac{\mathrm{Idl}\&times;\mathrm{<figure-callout\; id="3"\; label="r\; r"\; filenames="DEST\_PATH\_HDA00002077495100011.png,DEST\_PATH\_HDA00002077495100021.png"\; state="\{\{state\}\}">r</figure-callout>}}{r^{}}$

Wherein, B is a magnetic field intensity, and N is a coil turn, μ ₀Be permeability of vacuum, its value is 4 π * 10 ^-7Wb/AM, I are electric current, release:

$B={\&Integral;}_L{\mathrm{dB}}_{//}={\&Integral;}_L\mathrm{dB}\sin \mathrm{\&theta;}$

$=N\frac{{\mathrm{\&mu;}}_0}{2\mathrm{\&pi;}}\&CenterDot;\frac{\mathrm{IS}}{{({\mathrm{<figure-callout\; id="2"\; label="R"\; filenames="DEST\_PATH\_HDA00002077495100011.png,DEST\_PATH\_HDA00002077495100021.png"\; state="\{\{state\}\}">R</figure-callout>}}^2+x^2)}^{\frac{3}{2}}}$

Wherein, R is a coil radius, and S is a useful area.

According to the electromagnet experimental formula:

$F=\frac{{\mathrm{<figure-callout\; id="2"\; label="B"\; filenames="DEST\_PATH\_HDA00002077495100011.png,DEST\_PATH\_HDA00002077495100021.png"\; state="\{\{state\}\}">B</figure-callout>}}^2}{2{\mathrm{\&mu;}}_0}S$

$=\frac{{\mathrm{<figure-callout\; id="2"\; label="N"\; filenames="DEST\_PATH\_HDA00002077495100011.png,DEST\_PATH\_HDA00002077495100021.png"\; state="\{\{state\}\}">N</figure-callout>}}^2{\mathrm{\&mu;}}_0{I}^2{\mathrm{<figure-callout\; id="3"\; label="S"\; filenames="DEST\_PATH\_HDA00002077495100011.png,DEST\_PATH\_HDA00002077495100021.png"\; state="\{\{state\}\}">S</figure-callout>}}^3}{8{\mathrm{\&pi;}}^2{(R^2+x^2)}^3}$

Wherein, F is a magnetic field force, through M=FL (L represents jib-length):

$\mathrm{\&theta;}=\frac{M}{J}=\frac{\mathrm{FL}}{J}$

Wherein Θ is a rotational angle, and M is a moment, can myopia use Hooke's law because the coupling part is a compliant mechanism:

F=Kθ

Wherein, K is the rigidity of compliant mechanism, releases:

$\mathrm{\&theta;}=\frac{F}{K}$

We can know that change I, L can change the size and the direction of Amp through above simple calculation; So just can move by driving element; And can make deflection angle bigger as requested, the frequency through Control current I can increase motion makes frequency bigger.

From the above, the miniscanning projection device of the band light source of present embodiment, not only scanning angle is big, frequency is high and noise is little, and its corresponding time is short, and power consumption is little and be easy to control; Through angular displacement sensor is set, the accurately motion of control device makes scanning and imaging precision higher; Through movable member is integrated into PCB, so its volume is little, makes that rotational angle and frequency are bigger, and with low cost; Through X axis magnet and electromagnetic coil are set, make movable member do the 3-D scanning motion; Through X axle compliant mechanism and Y axle compliant mechanism are made as the S type, make the elasticity and the moving range of X axle compliant mechanism and Y axle compliant mechanism bigger.

The miniscanning projection device of the band light source of the utility model is not limited to the foregoing description, and all employings are equal to the technical scheme that replacement forms, and all drop on the protection domain of the utility model requirement.

Claims (7)

1. miniscanning projection device with light source; It is characterized in that: comprise that shell and center are provided with the movable member of light source; This movable member comprises first group of side and second group of side; On first group of side of said movable member, be provided with the Y axial magnet, and on second group of side, be provided with the X axle compliant mechanism that is connected with shell, portion is provided with and the corresponding first group of electromagnetic coil of Y axial magnet in the enclosure.

2. the miniscanning projection device of band light source according to claim 1 is characterized in that: arbitrary limit of said second group of side is provided with angular displacement sensor.

3. the miniscanning projection device of band light source according to claim 2; It is characterized in that: said movable member is PCB; This PCB is provided with two-layer, is provided with the coil that amplifies gradually from inside to outside at the PCB ground floor, and is respectively arranged with a pair of X axis magnet at one group of side of the PCB second layer; And arbitrary one side of another group side is provided with angular displacement sensor, is provided with light source at the middle part of the said PCB second layer.

4. the miniscanning projection device of band light source according to claim 1; It is characterized in that: also comprise Y axle compliant mechanism and outstanding frame; Should comprise first group of outstanding edge and second group of outstanding edge by outstanding frame, first group of outstanding edge of said Y axle compliant mechanism one end and outstanding frame joins the other end and outer shell; And second group of outstanding edge of said X axle compliant mechanism one end and outstanding frame joins, and the other end and second group of side join; And second group of outstanding edge of said outstanding frame is provided with X axis magnet; Portion is provided with and the corresponding second group of electromagnetic coil of X axis magnet in the enclosure.

5. the miniscanning projection device of band light source according to claim 4 is characterized in that: the both sides of said second group of side are respectively equipped with angular displacement sensor.

6. the miniscanning projection device of band light source according to claim 5; It is characterized in that: said movable member is PCB; Said PCB is provided with two-layer, is provided with the coil that amplifies gradually from inside to outside at the PCB ground floor, and is respectively arranged with a pair of X axis magnet at one group of side at the PCB second layer; And another group side is respectively equipped with angular displacement sensor, is provided with light source at the middle part of the said PCB second layer.

7. according to the miniscanning projection device of claim 4 or 6 described band light sources; It is characterized in that: said X axis magnet is bonded on the movable member; The mode that perhaps said X axis magnet is magnetic material through electro-deposition, sputter is added on the movable member, perhaps said X axis magnet be permanent magnet or actuating arm through bonding, be bonded on the movable member.

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