CN201689212U

CN201689212U - Dot matrix type laser display device

Info

Publication number: CN201689212U
Application number: CN2010201741766U
Authority: CN
Inventors: 张大志; 张明端
Original assignee: Individual
Current assignee: Individual
Priority date: 2010-04-29
Filing date: 2010-04-29
Publication date: 2010-12-29
Anticipated expiration: 2020-04-29

Abstract

The utility model provides a dot matrix type laser display device, including light-emitting light sources, a display device, a control and drive circuit for modulating light intensity, and a rotating mirror drum for reflecting light rays from the light-emitting light source to the display device, wherein the control and drive circuit is connected with the light-emitting light source, the number of lines of light spot fall points generated by each light-emitting light source is equal to the number of mirror faces of the rotating mirror drum, and the mirror faces have different included angles relative to the light rays. The display device adopts less accessories and may be produced without too many high-worth precision equipment, such that the display device is easy to produce and is propitious to market popularization and after-sales maintenance of products.

Description

A kind of dot matrix laser display apparatus

Technical field

[0001] the utility model relates to the display technique field, more particularly relates to a kind of dot matrix laser display apparatus.

Background technology

[0002] since laser technology occurs, many laser display apparatus or optical projection system have occurred, such as the laser projection with mechanical scanning type, perhaps adopting in a large number with optical fiber is the linear array optical projection system of conductive medium.The core component of mechanical scanning type laser projection is too high owing to its rotating speed, and precision requirement is big, thereby innately has life-span weak point, the shortcoming that manufacture difficulty is big.As for a large amount of employing light is the optical projection system of conductive medium, since process at each interface, entering optical fiber or enter air from optical fiber from air all can be because of light in the reflection at this interface and cause the loss of light, cause light luminance to weaken, simultaneously owing to adopt the thinner optical fiber of diameter as conductive medium, if hot spot is big a little, the effect of this optical projection system will be had a greatly reduced quality, be difficult to reach the effect of design, thereby the optically focused performance of laser tube proposed high requirement, finally caused the increase of cost; In addition owing to need allow the very high laser beam of directivity enter the very thin optical fiber of diameter, the drop point that also will guarantee its laser drops on preposition simultaneously, thereby section and corresponding production technology to optical fiber have proposed very high requirement, if a large amount of modes that adopt fiber optic conduction, very big of its production difficulty, production efficiency is very low, causes cost very high at last.Though passed through improvement afterwards, a kind of subregion fine scanning formula laser projection shown in publication number CN1438510A, but it is final owing to partition type scans when increasing or reduce display line, the face number that needs the very high mirror drum of change precision, in fact be difficult to the possibility of change, thereby this subregion fine scanning formula laser projection is difficult for expansion, and owing to inhomogeneous or the like the reason of spacing between the Qu Yuqu, the former capital fails to use in a large number in actual production simultaneously.

Summary of the invention

A kind of dot matrix laser display apparatus that the utility model relates to, its purpose are to overcome the difficult shortcoming of existing laser display apparatus expansion.

The technical solution adopted in the utility model is as follows:

A kind of dot matrix laser display apparatus, comprise the control and the driving circuit of illuminating source, display device, modulate light intensity and be used for the light that illuminating source sends is reflected rotation mirror drum on display device, the control of described modulate light intensity and driving circuit are connected with illuminating source, and the line number of the hot spot drop point that described each illuminating source produces is with to rotate the minute surface number that can form different angles between each minute surface of mirror drum identical.

The multirow of formed behavior single file of the hot spot drop point of described each illuminating source or continuous adjacent.

Described illuminating source is for lasing fluorescence diode and relevant optical component or be laser module and relevant optical component.

Described lasing fluorescence diode or laser module are a plurality of, and equidistantly arrange side by side.

Described hot spot drop point is by predefined positional alignment.

Described illuminating source is the monochromatic semiconductor laser diode or the laser module of mixing colours for redgreenblue laser.

Described rotation mirror drum is polygonal mirror or single-surface mirror.

The rotation axis of described mirror drum is parallel to display device or has the angle of spending smaller or equal to 90 with display device.

Compared with existing technology to description of the present utility model as can be known by above-mentioned, advantage of the present utility model is:

1, since the rotation of illuminating source by mirror drum scan and show that hot spot is on screen, described illuminating source is lasing fluorescence diode and the relevant optical component of equidistantly arranging side by side or is laser module and relevant optical component, therefore a laser tube or a laser module can be finished the scanning to adjacent delegation or multirow (row or a multiple row), thereby reduced the quantity of laser tube, saved cost, thus make a lot of requirements cheaply the laser display product become possibility.

2, most parts stationary fixing all in this utility model, scanning is finished in rotation by mirror drum, when reaching 10 revolutions per seconds of suspenopsia, rotating speed can on display screen, see the image that will show, because its rotating speed is very low, changed from thorough that the laser display apparatus rotating speed was too high in the past, the life-span short, make difficult problem.

3, because the whole accessory that uses of this technical scheme is considerably less, need not too many high value precision equipment in the production run, therefore produce easily, help the marketization popularization of product and after-sales service etc.

Description of drawings

Fig. 1 is a kind of structural drawing of dot matrix laser display apparatus;

Fig. 2 is a kind of dot matrix laser display apparatus scanning theory figure;

Fig. 3 is a kind of dot matrix laser display apparatus mirror drum vertical view.

Embodiment

As Fig. 1, Fig. 2, shown in Figure 3, a kind of dot matrix laser display apparatus, the control and driving circuit 2 and the rotation mirror drum 3 that comprise illuminating source 1, screen 4, modulate light intensity, illuminating source 1 is connected with the control and the driving circuit 2 of modulate light intensity, under the control of the control of modulate light intensity and driving circuit 2, illuminating source 1 is by 3 reflections of rotation mirror drum, and scanning also forms luminous point on the hot spot drop point 5 on the screen 4.Described illuminating source 1 is lasing fluorescence diode LD1, LD2, LD3 ... LDn, the drop point of its hot spot are redefined for equidistantly and arrange side by side.Rotation mirror drum 3 is made up of first catoptron 3-1, second catoptron 3-2, thrihedral reflector 3-3, an angle that increases (also can reduce successively) is successively gradually arranged between the three mirror contact lens, at irradiation distance one regularly, the size of this angle determined row with capable between the size of spacing, so the concrete condition of line space that can be optionally and deciding.

This dot matrix laser display apparatus scanning theory is as follows: as shown in Figure 1 and Figure 2, when laser radiation during at first catoptron 3-1, illuminating source 1 is with b1, b2, b3 ... the order of bn scans, LD1 to a1 line scanning, LD2 to a4 line scanning, LD3 to the a7 line scanning ... LDn is to the a3n-2 line scanning; When laser radiation during at second catoptron 3-2, owing between first catoptron 3-1 and second catoptron 3-2 an angle is arranged, the drop point that causes the scanning ray light reflected moves (on move delegation) in screen 4, thereby, illuminating source 1 is with b1, b2, b3 ... the order of bn scans, LD1 to a2 line scanning, LD2 to a5 line scanning, LD3 to the a8 line scanning ... LDn is to the a3n-1 line scanning; When laser radiation during at thrihedral reflector 3-3, owing between second catoptron 3-2 and the thrihedral reflector 3-3 angle being arranged also, cause scanning ray light reflected drop point to move (on move delegation) in screen 4, thereby, illuminating source 1 is with b1, b2, b3 ... the order of bn scans, LD1 to a3 line scanning, LD2 to a6 line scanning, LD3 to the a9 line scanning ... LDn is to the a3n line scanning.Thereby each lasing fluorescence diode with scanning adjacent 3 row that are over so far finish a frame-scan period.

To show that ok is an example, as shown in Figure 1, this figure is total to bn by b1-a1 to bn-a3n to multiply by the dot matrix that a3n point forms, there be not to show or be the dot matrix (be lattice array that laser do not illuminate this point) of place for not showing of empty circles among the figure, the dot matrix (be lattice array that laser need illuminate this point) of the place of solid circles for needing to show.

When rotating to first catoptron 3-1, rotation mirror drum 3 is in laser when the scanning position, under the control of control that can modulate light intensity and

driving circuit

2,3 rotations of rotation mirror drum form a1, a4, a7 ... the a3n-2 line scanning of advancing, its scanning process is as follows: at control that can modulate light intensity and driving circuit 2 according to wanting content displayed, all illuminating sources 1 all extinguish when b1 column scan position, do not have bright spot to show (be among Fig. 1 on the screen 4 all circles of b1 column position for empty or do not show) on the screen; Rotation mirror drum 3 continues rotation, and during to b2 column scan position, control that can modulate light intensity and driving circuit 2 make LD2 luminous according to wanting content displayed, form a luminous point in the b2-a4 position, and other all extinguish; Rotation mirror drum 3 continues rotation, and all light sources all extinguish in b3 column scan position and during b4 column scan position, during to b5 column scan position, make LD4 luminous, form a luminous point in the b5-a4 position, and other all extinguish; Rotation mirror drum 3 continues rotation, and all light sources all extinguish during to b6 column scan position, during to b7 column scan position, makes LD2 and LD3 simultaneously luminous, and in the b7-a4 position and b7-a7 position formation luminous point, other all go out; Rotation mirror drum 3 continues rotation, by that analogy, up to the bn column position end of scan time, the end of scan of first catoptron 3-1 of rotation mirror drum 3, thus finished a1, a4, a7 ... the demonstration that a3n-2 is capable, rotation mirror drum 3 continues rotation.

According to above rule of carrying out each line scanning, by that analogy by row:

When rotation mirror drum 3 rotates to second catoptron 3-2 when being in laser according to the position of scanning, under the control of control that can modulate light intensity and

driving circuit

2,3 rotations of rotation mirror drum form a2, a5, a8 ... each point on a3n-1 is capable scans.

When rotation mirror drum 3 rotates to thrihedral reflector 3-3 when being in laser according to the position of scanning, under the control of control that can modulate light intensity and

driving circuit

2,3 rotations of rotation mirror drum form a3, a6, a9 ... each point on a3n is capable scans.

After first catoptron 3-1, second catoptron 3-2, thrihedral reflector 3-3 were scanned and finish, so far each array point of this array had all scanned, thereby a frame scan finishes.

Owing to the suspenopsia reason, feel that all points that need light are all lighted simultaneously, thereby the scanner uni that has just formed ok printed words pattern shows.

Above-mentioned only is embodiment of the present utility model, but design concept of the present utility model is not limited thereto, and allly utilizes this design that the utility model is carried out the change of unsubstantiality, all should belong to the behavior of invading the utility model protection domain.

Claims

1. dot matrix laser display apparatus, it is characterized in that: comprise the control and the driving circuit of illuminating source, display device, modulate light intensity and be used for the light that illuminating source sends is reflected rotation mirror drum on display device, the control of described modulate light intensity and driving circuit are connected with illuminating source, and the line number of the hot spot drop point that described each illuminating source produces is with to rotate the minute surface number that can form different angles between each minute surface of mirror drum identical.

2. a kind of dot matrix laser display apparatus according to claim 1 is characterized in that: the multirow of formed behavior single file of the hot spot drop point of described each illuminating source or continuous adjacent.

3. a kind of dot matrix laser display apparatus according to claim 1 is characterized in that: described illuminating source is for lasing fluorescence diode and relevant optical component or be laser module and relevant optical component.

4. a kind of dot matrix laser display apparatus according to claim 3 is characterized in that: described lasing fluorescence diode or laser module are a plurality of, and equidistantly arrange side by side.

5. a kind of dot matrix laser display apparatus according to claim 1 is characterized in that: described hot spot drop point is by predefined positional alignment.

6. a kind of dot matrix laser display apparatus according to claim 1 is characterized in that: described illuminating source is the monochromatic semiconductor laser diode or the laser module of mixing colours for redgreenblue laser.

7. a kind of dot matrix laser display apparatus according to claim 1 is characterized in that: described rotation mirror drum is polygonal mirror or single-surface mirror.

8. a kind of dot matrix laser display apparatus according to claim 1 is characterized in that: the rotation axis of described mirror drum is parallel to display device or has the angle of spending smaller or equal to 90 with display device.