CN103116219A - Scanning projection device with detecting function and detection methods thereof - Google Patents
Scanning projection device with detecting function and detection methods thereof Download PDFInfo
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- CN103116219A CN103116219A CN2011103626846A CN201110362684A CN103116219A CN 103116219 A CN103116219 A CN 103116219A CN 2011103626846 A CN2011103626846 A CN 2011103626846A CN 201110362684 A CN201110362684 A CN 201110362684A CN 103116219 A CN103116219 A CN 103116219A
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Abstract
The invention discloses a scanning projection device with a detecting function and detection methods of the scanning projection device. At least one optical splitter is arranged on a projection path of a scanning beam between a beam deflection irradiating device and an image area so as to enable the scanning beam to be divided into a first part beam and a second part beam, wherein the first part beam has a relatively more quantity and the second part beam has a relatively less amount according to a preset proportion. The second part beam is projected to a sensor to form a second image area, and the sensor is used for detecting the second image area so as to achieve the detection function. At least a modulation device is further used for modulating the light source and operation state of the beam deflection irradiating device based on the second image area so as to avoid the defects and the puzzles that in the prior art the surrounding of the scanning beam in the image area is cut off to form a practical image area and to start and produce a scanning line at the vertical extreme outside the practical image area and near the image area, so that the scanning line scans once the sensor arranged at the extreme in each image frame (image frame).
Description
Technical field
The present invention is relevant a kind of scanning grenade instrumentation, the espespecially a kind of inclined to one side injection device of light beam and method for detecting thereof with detecting function.
Background technology
Scanning grenade instrumentation (scanning projection apparatus) is used in the various devices of optical field widely, for example be designed to a laser scan unit (LSU, Laser Scanning Unit) for being applied to printer, scanner etc., or be designed to a laser projector (laser Projector) that is generally called for being applied to miniature laser projector or automobile HUD (HUD, head-up device).this scanning grenade instrumentation is to utilize the inclined to one side injection device of light beam (beam deflecting device) of one dimension vibration at least, in order to partially to penetrate light beam that at least one light source sends, forms the image area of one dimension at least, wherein this light source can be LASER Light Source but does not limit (also can utilize LED light source), again this at least the image area of one dimension be defined herein as by the inclined to one side injection device of this light beam partially penetrate formation scanning light beam be projected to a formed projection light zone, target area, for example a miniature laser projector or automobile are to utilize tool twin shaft (two dimension) scan function or two each tool single shaft (one dimension) scan functions and each single shaft to be corrected into orthogonal optical beam scanner to form one, to be generally two-dimentional image area partially to penetrate a laser beam and to be projected to a target area with the inclined to one side injection device of light beam that HUD uses.And for making a miniature laser projector, usually use a micro electromechanical scanning galvanometer (micro electronic mechanical scanning mirror is called for short the MEMS galvanometer) as optical beam scanner.
For convenience of description, the present invention illustrates as example take a kind of scanning grenade instrumentation that is applied to a laser projector but does not limit below this.One existing scanning grenade instrumentation such as US6,937,372B2, US7,972,014B2 etc., can utilize the inclined to one side injection device of a light beam (beam deflecting device) such as optical beam scanner such as micro electromechanical scanning galvanometer (MEMS scanning vibrating mirror) with twin shaft scan function or to utilize two optical beam scanners with single shaft scan function and each single shaft to be corrected into mutually vertical, move with two Z-axis point of crossing and partially penetrate and form an image area with the light beam with a collimation.The foundation of one image area can scan out light beam with grating pattern (raster pattern) or sharp Sa such as pattern (Lissajous pattern); Image comprises chart or figure, can utilize and determine light-beam position and modulation light beam power, and the image data that foundation receives on image area is to form desired image pixel (image pixels).
In order to make a small-sized image projection system, typically use a micro electromechanical scanning galvanometer (micromechanical scanning mirror) as the inclined to one side injection device of light beam such as US6,937,372B2, US7,972,014B2 etc. disclose; Electrical drive signal such as alternating voltage or alternating current are used in optical beam scanner so that the micro electromechanical scanning galvanometer produces the mechanical type vibration; When the inclined to one side injection device of light beam or during near its resonant frequency, can in the bidirectional-movement of tool sine sweep parabolic path, obtain maximum machine achievement or high scan angles.For grating (raster) scanning system, when vertically to scanning motion according to image turnover rate (refresh rate) during the jaggies motion (sawtooth motion) take frequency 50Hz or 60Hz as a control, level is generally sinusoidal curve according to image analytic degree with a high-frequency to scanning motion; For Li Sa such as (Lissajous) scanning system, level to and the sinusoidal curve that all is its frequency ratio (frequency ratio) through carefully selecting to scanning motion vertically, can reach a stable and scanning patter repeatably; For vectorial pattern scanning system, if if input to the linear response frequency that the signal of micro electromechanical scanning galvanometer is higher than this micro electromechanical scanning galvanometer, then the scanning angle of micro electromechanical scanning galvanometer will be not geometric ratio in the signal strength that inputs to the micro electromechanical scanning galvanometer, and generation time is poor.
For precision projection one scan image, the tram of the light beam after optical beam scanner is penetrated partially must can determine, so light beam ability modulation and image data that foundation receives removes to form desired image pixel (image pixels); For sine sweep, as long as sweep frequency and point of crossing time point, namely when the time point of light beam by scanning span (scan span) center be known, just can be based on the mathematical equation of sinusoidal motion with the light-beam position of calculating with respect to track while scan; If optical beam scanner is with a fixing frequency operation near resonant frequency, a slight change of resonant frequency will cause driving the phase change between vibration (swing) motion of signal and optical beam scanner.In order to form image pixel (image pixels) in correct place, the time point of modulation (modulation) light beam thereby must be corrected.If the phase differential between the time point of modulation light beam and the position of scanning light beam is not correctly compensated, will become displacement (displaced) and distort (distorted) of the image pixel of projection then.
Therefore, whether normal operating state has the property of urgent need to detect the inclined to one side injection device of a light beam to provide a measure.Although for the phase differential between the position of the time point of above-mentioned modulation problem such as modulation light beam and scanning light beam, part prior art such as US6,937,372B2, US7,972,014B2 etc. have proposed the technological means of dealing with problems; Yet, the technological means of these prior arts mostly be utilize an inductor to be located at the outer of practical image area (active image field) but induction zone at least a portion inductor be provided in a side of image area vertically in extreme, the light beam that this inductor can be penetrated partially in order to detecting; This light beam is to be cut off (switched off) forming a practical image area for the projection image at the periphery of image area again, and this practicality image area outside and close image area vertically to extremely being activated to produce the one scan line with at the inswept inductor of each image frame (image frame).Hence one can see that, and prior art has following shortcoming at least:
1, this light beam is to be cut off (switched off) to form a practical image area (active image field) for the projection image at the periphery of image area, so the scope relative decrease of the practical image area of formation that light beam throws, the imaging of wasting the periphery of practical image area.
2, this inductor must be built up in according to design an ad-hoc location, and the inclined to one side injection device of light beam must be outside this practicality image area and is vertically produced a feedback sweep trace to extreme place with at the inswept inductor of each image frame (image frame) near image area, therefore relatively cause the degree of difficulty of assembling operation and correction operation, be unfavorable for mass production.
3, all there is certain width in the induction zone of various inductors, be that induction zone has separately the first edge and second edge of one fixed width at width to (laterally), when feedback sweep trace during at the inswept inductor of each image frame (image frame), can produce a time difference between the electronic pulse signal that the first edge of this feedback sweep trace process inductor and the second edge produce, and the width that the induction zone of various brand inductors has is also inconsistent, therefore relatively cause the degree of difficulty of assembling and correction operation, be unfavorable for the design of modulation circuit, also be unfavorable for the selection of various inductors, the making finished product can't effectively be reduced.
4. prior art is to utilize to produce at least one feedback sweep trace outside this practicality image area, and make this feedback sweep trace at the inswept inductor of each image frame (image frame), to set up a detecting, the pattern of calculating and compensating, but because the area of the induction zone of inductor is limited, cause this detecting, the function of calculating and compensating is relatively limited, but for example compensation of the phase differential between the position of the time point of modulation light beam and scanning light beam, but can't be to the mode of operation of this light source and the inclined to one side injection device of this light beam, such as the intensity of light beam that this light source sends or the amplitude (vibration angle) of the inclined to one side injection device of this light beam, frequency and waveform etc. may just can't be reached detecting, the function of calculating and compensating.
5. prior art can't in time be detected the scanning situation in practical image area (active image field), therefore can't detect vectorial pattern scanning system.
The present invention is namely for the shortcoming of prior art, the technological means that proposition can effectively be dealt with problems.
Summary of the invention
Purpose of the present invention is to be to provide a kind of scanning grenade instrumentation and method for detecting thereof with detecting function, and this scanning grenade instrumentation comprises at least one light source in order to produce light beam and the inclined to one side injection device of a light beam in order to partially to penetrate this light beam to form scanning light beam and projection formation one image area; The present invention utilizes at least one optical splitter to be located on the projected path of scanning light beam between the inclined to one side injection device of this light beam and this image area, with so that this scanning light beam is divided into first and second relatively a small amount of segment beam of volume and relatively with a preset ratio, and make this second portion light beam be projected to an inductor to form one second image area, and utilize this inductor to detect this second image area, to reach detecting function; The present invention more utilizes at least one changing device with according to the mode of operation of this second image area with this light source of modulation and the inclined to one side injection device of this light beam, uses the shortcoming of avoiding prior art.
In order to achieve the above object, the invention provides a kind of scanning grenade instrumentation with detecting function, comprise:
At least one light source, it is in order to produce at least one light beam;
The inclined to one side injection device of one light beam, forming scanning light beam, this scanning light beam outwards throws to form the image area of one dimension at least again in order at least one light beam of partially penetrating this at least one light source and sending for it;
At least one optical splitter, it is arranged on the projected path of this scanning light beam between the inclined to one side injection device of this light beam and this image area, with so that this scanning light beam at first's light beam and a default relatively a small amount of second portion light beam that can be divided into a preset ratio a default relatively volume when this optical splitter, wherein this relatively first's light beam of volume can throw outwards to form one corresponding to this first image area of the image area of one dimension at least, wherein this relatively a small amount of second portion light beam can be projected to an inductor further to form one corresponding to this second image area of the image area of one dimension at least at this inductor; And
At least one inductor is in order to detect this second image area.
In order to achieve the above object, the present invention also provides a kind of method for detecting that scans grenade instrumentation, comprises the following step:
The one scan grenade instrumentation is provided; This scanning grenade instrumentation comprises at least one light source in order to produce at least one light beam; And the inclined to one side injection device of a light beam in order at least one light beam of partially penetrating this at least one light source and sending forming scanning light beam, this scanning light beam outwards throws to form the image area of one dimension at least again;
At least one optical splitter is provided, and this optical splitter is arranged on the projected path of scanning light beam between the inclined to one side injection device of this light beam and this image area, with so that this scanning light beam at first's light beam and a default relatively a small amount of second portion light beam that can be divided into a preset ratio a default relatively volume when this optical splitter, wherein this relatively first's light beam of volume can throw outwards to form one corresponding to this first image area of the image area of one dimension at least, wherein this relatively a small amount of second portion light beam can be projected to an inductor further to form one corresponding to this second image area of the image area of one dimension at least at this inductor; And
Provide at least one inductor, in order to detect this second image area.
Description of drawings
Fig. 1 is the schematic perspective view of scanning grenade instrumentation the first embodiment of the present invention;
Fig. 2 is plane (on the look) synoptic diagram of the first embodiment shown in Figure 1;
Fig. 3 is plane (on the look) synoptic diagram of scanning grenade instrumentation the second embodiment of the present invention;
Fig. 4 is plane (on the look) synoptic diagram of scanning grenade instrumentation the 3rd embodiment of the present invention;
Fig. 5 is the reference diagram of inductor one embodiment used in the present invention (DVD read usefulness (pick-up) photodetector).
1,2,3-scans grenade instrumentation description of reference numerals:; The 10-light source; The 11-light beam; The 12-scanning light beam; 12a-first light beam; 12b-second portion light beam; The inclined to one side injection device of 20-light beam; The 30-image area; 30a-the first image area; 30b-the second image area; 40,40a-optical splitter; The 41-concave surface; The 50-inductor; The 60-changing device; The 61-detecting unit; The 62-control module; The 63-light source driving units; 64-penetrates driver element partially.
Embodiment
For making the present invention more clear and definite full and accurate, hereby enumerate preferred embodiment and cooperate following diagram, with structure of the present invention, method and technical characterictic describes in detail as after:
With reference to figure 1, shown in Figure 2, it is the schematic perspective view of scanning grenade instrumentation the first embodiment of the present invention and plane thereof (on look) synoptic diagram.Scanning grenade instrumentation 1 with detecting and compensate function of the present invention, mainly comprise: the inclined to one side injection device of at least one light source (light source) 10, one light beam (beam deflecting device) 20, at least one optical splitter (BS, beam splitter) 40 and at least one inductor (detecting sensor) 50; Further can comprise at least one changing device (modulation means) 60.
This at least one light source (light source) the 10th in order to producing at least one light beam 11, and is projected to the inclined to one side injection device 20 of this light beam; 10 of this at least one light sources (light source) are with a light source (light source) 10 representatives but non-ly be used for limiting the present invention in the present embodiment.This light source 10 can be LASER Light Source but does not limit.This light beam 11 can be visible light, forms such as the light beam that has red, green, blue look wavelength by many; This light beam 11 also can be invisible light, even have wavelength invisible to the human eye such as infrared ray.
The inclined to one side injection device of this light beam (beam deflecting device) the 20th, in order to partially penetrating at least one light beam 11 that this light source 10 sends forming scanning light beam 12, this scanning light beam 12 throw outside to form the image area 30 of one dimension at least again.The inclined to one side injection device 20 of this light beam is designed to a micro electromechanical scanning galvanometer (MEMS scanning vibrating mirror) but non-ly is used for limiting the present invention in the present embodiment, and the inclined to one side injection device 20 of light beam shown in Figure 1 is a micro electromechanical scanning galvanometer with twin shaft scan function.
This optical splitter (BS, beam splitter) 40 for having the dichroism to incident beam generating portion reflection and part refraction, it is arranged on the projected path of this scanning light beam 12 between the inclined to one side injection device 20 of this light beam and this image area 30, uses so that this scanning light beam 12 can be divided into a preset ratio light beam 12a of first and a default relatively a small amount of second portion light beam 12b of a relatively volume of presetting through this optical splitter 40 time.Light splitting function with an optical splitter, part reflects and the amount of beam ratio of part refraction can need to and sort according to design, namely when the light beam 12a of first of volume designs with this optical splitter 40 of refraction mode (or reflection mode) process relatively, the amount of beam ratio that part reflects and part reflects that represents this optical splitter 40 is set, then another relatively a small amount of second portion light beam 12b just in another way, namely reflect mode (or refraction mode), through this optical splitter 40.In the present embodiment, this relatively the light beam 12a of first of volume be with the refraction mode pass this optical splitter 40 and projection outwards with form one corresponding to this at least the image area 30 of one dimension the first image area 30a as shown in Figure 1, 2, this moment, this relatively a small amount of second portion light beam 12b namely was projected to an inductor 50 further to form one corresponding to this second image area 30b of the image area 30 (30a) of one dimension at least at this inductor 50 in the reflection mode; In the present embodiment, the 5-10 percent (%) that should default relatively a small amount of second portion light beam 12b can be designed to the amount of beam of this scanning light beam 12, namely this scanning light beam 12 can be with 5%: 95% ratio to 10% through this optical splitter 40 time: 90% ratio is divided into the relatively light beam 12a of first of volume of a relatively a small amount of second portion light beam 12b and; Thus, the first image area 30a and this scanning light beam 12 of first's formation that light beam 12a throws of volume throw the image area 30 that forms and compare relatively for these, on light intensity (brightness), do not have too big-difference, and the second image area 30b of this relatively a small amount of second portion light beam formation that 12b throws has again enough light intensity to detect for this inductor 50, reaches the detecting function of institute of the present invention demand.
This at least one inductor (detecting sensor) the 50th is in order to detect this second image area 30b, to reach the detecting function of institute of the present invention demand; Wherein this inductor 50 can be selected from a kind of in the following group: charge-coupled device (CCD) (charge-coupled device, CCD), polynary photodetector (Patterned photon detector), position sensor (position sensitive device, but the different kenels of above-mentioned these inductors 50 are not to limit the present invention PSD).Scanning grenade instrumentation 1 of the present invention at present with select polynary photodetector as inductor 50 for better.This polynary photodetector or the structural design that is called patterning photodetector (Patterned photon detector) can read usefulness (pick-up) photodetector as shown in Figure 5 but not limit with reference to DVD (digital video laser disc Digital Video Disc or digital multi-purpose laser disc Digital Versatile Disc) is employed.
The present invention further can comprise at least one changing device (modulation means) 60.This at least one changing device (modulation means) the 60th links and to be located between this at least one inductor 50, this at least one light source 10 and the inclined to one side injection device 20 of this light beam, in order to according to the mode of operation of formed this second image area 30b on this at least one inductor 50 with this at least one light source 10 of modulation and the inclined to one side injection device 20 of this light beam.In the present embodiment, this changing device 60 further can comprise following each unit (circuit) but be not to limit the present invention: a detecting unit (measurement unit) 61 for and this inductor 50 link, the data that are formed on the second image area 30b on this inductor 50 and will detect gained in order to detecting are sent to control module (control unit) 62; One control module (control unit) 62 is for linking with this detecting unit 61, carry out computing in order to the data that provide for this detecting unit 61, and the data of computing gained need to be sent to respectively a light source driving units (light source drive unit) 63 and/or according to control partially penetrate driver element 64; One light source driving units (light source drive unit) 63 is for being attached between this light source 10 and this control module 62, in order to the operation result data that can provide according to this control module 62 mode of operation with this light source 10 of modulation, such as the intensity of this light source 10 light beam that sends 11 of modulation; Reach one and partially penetrate driver element (deflecting drive unit) 64 for being attached between the inclined to one side injection device 20 of this light beam and this control module 62, in order to the operation result data that can provide according to this control module 62 mode of operation with the inclined to one side injection device 20 of this light beam of modulation, be vibration angle, frequency, phase place and the mode of motion of partially penetrating axle such as sinusoidal motion or sawtooth (sawtooth) motion etc. such as the amplitude (amplitude) of the inclined to one side injection device 20 of this light beam of modulation.Because the design of this changing device 60, as comprise a detecting unit 61, a control module 62, a light source driving units 63, and partially penetrate driver element 64, be to utilize the present electronic technology can the person of reaching, and circuit design itself or the related software design of each unit is not technical characterstic of the present invention yet in this changing device 60, so repeat no more in this.
Again with reference to shown in Figure 3, it is plane (on the look) synoptic diagram of scanning grenade instrumentation the second embodiment of the present invention.Difference shown in the scanning grenade instrumentation 2 of this second embodiment and Fig. 1,2 between the scanning grenade instrumentation 1 of the first embodiment is: the scanning grenade instrumentation 2 of this second embodiment further on the projected path of this second portion light beam 12b between this optical splitter (BS) 40 and this inductor 50, arranges at least one optical element 70.This optical element 70 can be one and has the optical element 70 of optically focused effect as convex lens as shown in Figure 3, so that this relatively a small amount of second portion light beam 12b is being projected to this inductor 50 with before forming this second image area 30b, can be first through this optically focused with optical element 70 to dwindle first the projection area area of this second portion light beam 12b, with the area of this inductor 50 of relative decrease or its needed induction zone as shown in Figure 3, be conducive to make the scanning grenade instrumentation 2 of this second embodiment can be relatively light, thin, short and small, with advantageous effect and the purpose of reaching miniaturization, and relatively reduce the member cost.In addition, this optical element 70 also can be one and has the optical element 70 of diffusion such as a concavees lens (not shown), use and make this relatively a small amount of second portion light beam 12b be projected to this inductor 50 with before forming this second image area 30b, can be first through this diffusion with optical element 70 to spread first the projection area area of this second portion light beam 12b, area (not shown) with this inductor 50 of relative increasing or its needed induction zone is conducive to improve the precision of detecting.
Again with reference to shown in Figure 4, it is plane (on the look) synoptic diagram of scanning grenade instrumentation the 3rd embodiment of the present invention.Scanning grenade instrumentation 3 and Fig. 1 of this 3rd embodiment, difference between the scanning grenade instrumentation 1 of the first embodiment shown in 2 is: concave surface type optical splitter (BS) 40a that the scanning grenade instrumentation 3 of this 3rd embodiment further is designed to this optical splitter (BS) 40 a tool concave surface 41 as shown in Figure 4, so that this scanning light beam 12 is through this concave surface type optical splitter 40a the time, this relatively a small amount of second portion light beam 12b can carry out first light collecting reflection and be projected to this inductor 50 again by the light-focusing function of this concave surface 41, namely this relatively a small amount of second portion light beam 12b is being projected to this inductor 50 with before forming this second image area 30b, can pass through first this concave surface type optical splitter (BS) 40a to dwindle first the projection area area of this second portion light beam 12b, with these inductor 50 needed induction zones of relative decrease, be conducive to make the scanning grenade instrumentation 3 of this 3rd embodiment can be relatively light, thin, short and small, reach the advantageous effect of miniaturization, and relatively reduce the member cost.
In addition, can need with design, the optically focused of the scanning grenade instrumentation 2 of concave surface type optical splitter (BS) 40a of the tool concave surface 41 of the scanning grenade instrumentation 3 of the 3rd embodiment and the second embodiment is used with optical element 70 collocation, make this relatively a small amount of second portion light beam 12b be projected to this inductor 50 with before forming this second image area 30b, can more effectively dwindle the projection area area of this second portion light beam 12b, i.e. these inductor 50 needed induction zones of relative decrease more effectively, be conducive to make the scanning grenade instrumentation of the present invention can be relatively light, thin, short and small, reach the advantageous effect of miniaturization, and relatively reduce the member cost
The present invention further provides a kind of method for detecting that scans grenade instrumentation, it comprises the following step:
The one scan grenade instrumentation is provided; This scanning grenade instrumentation comprises at least one light source 10 in order to produce at least one light beam 11; And the inclined to one side injection device 20 of a light beam in order at least one light beam 11 of partially penetrating this at least one light source 10 and sending forming scanning light beam 12, this scanning light beam 12 throw outside to form the image area 30 of one dimension at least again;
At least one optical splitter (BS) 40 is provided, and this optical splitter (BS) 40 is arranged on the projected path of scanning light beam 12 between the inclined to one side injection device 20 of this light beam and this image area 30, with so that this scanning light beam 12 at the light beam 12a of first and a default relatively a small amount of second portion light beam 12b that can be divided into a preset ratio a default relatively volume when this optical splitter 40, wherein this relatively the light beam 12a of first of volume can throw outwards to form one corresponding to this first image area 30a of the image area 30 of one dimension at least, wherein this relatively a small amount of second portion light beam 12b can be projected to an inductor 50 further to form one corresponding to this second image area 30b of the image area 30 of one dimension at least at this inductor 50; And
Provide at least one inductor 50, in order to detect this second image area 30b.
The present invention further comprises next step: at least one changing device (modulation means) 60 is provided, this changing device 60 is linked to be located between this inductor 50, this light source 10 and the inclined to one side injection device 20 of this light beam, in order to throw this second image area 30b that forms according to this inductor 50, with the mode of operation of this at least one light source 10 of modulation and the inclined to one side injection device 20 of this light beam.
As from the foregoing, technical way of the present invention, be that it is different from related prior art such as US6,937,372B2, US7,972, the key distinction feature of 014B2 etc., be to utilize at least one optical splitter to be located on the projected path of this scanning light beam 12 between the inclined to one side injection device 20 of this light beam and this image area 30, with so that this scanning light beam 12 can be divided into relatively a small amount of first and second a segment beam 12a of volume and relatively with a preset ratio, 12b, and make this relatively a small amount of second portion light beam 12b be projected to an inductor 50 forming one second image area 30b, and utilize this inductor 50 to detect this second image area 30b.In addition, recycling at least one changing device 60 is with according to the mode of operation of this second image area 30b with this light source 10 of modulation and the inclined to one side injection device 20 of this light beam, to avoid the shortcoming of these related prior art.
The above only is the preferred embodiments of the present invention, only is illustrative for the purpose of the present invention, and nonrestrictive; This professional skill field tool common knowledge personnel understand, and can carry out many changes to it in the spirit and scope that claim of the present invention limits, revise, even the equivalence change, but all will fall within the scope of protection of the present invention.
Claims (16)
1. the scanning grenade instrumentation with detecting function is characterized in that, comprises:
At least one light source, it is in order to produce at least one light beam;
The inclined to one side injection device of one light beam, forming scanning light beam, this scanning light beam outwards throws to form the image area of one dimension at least again in order at least one light beam of partially penetrating this at least one light source and sending for it;
At least one optical splitter, it is arranged on the projected path of this scanning light beam between the inclined to one side injection device of this light beam and this image area, with so that this scanning light beam at first's light beam and a default relatively a small amount of second portion light beam that can be divided into a preset ratio a default relatively volume when this optical splitter, wherein this relatively first's light beam of volume can throw outwards to form one corresponding to this first image area of the image area of one dimension at least, wherein this relatively a small amount of second portion light beam can be projected to an inductor further to form one corresponding to this second image area of the image area of one dimension at least at this inductor; And
At least one inductor is in order to detect this second image area.
2. scanning grenade instrumentation according to claim 1 is characterized in that, this inductor is to be selected from a kind of in the following group: charge-coupled device (CCD), polynary photodetector, position sensor.
3. scanning grenade instrumentation according to claim 1, it is characterized in that, should default relatively a small amount of second portion light beam be the 5-10 percent of this scanning light beam, and make this scanning light beam can be with 5: 95 ratios to 10 through this optical splitter the time: 90 ratios be divided into a relatively a small amount of second portion light beam and first's light beam of volume relatively.
4. scanning grenade instrumentation according to claim 1 is characterized in that, this light source is LASER Light Source.
5. scanning grenade instrumentation according to claim 1 is characterized in that, this light beam comprises a kind of or its combination in visible light, the invisible light.
6. scanning grenade instrumentation according to claim 5 is characterized in that, this light beam is comprised of many light beams with red, green, blue look wavelength.
7. scanning grenade instrumentation according to claim 1 is characterized in that, this light beam has wavelength invisible to the human eye.
8. scanning grenade instrumentation according to claim 1 is characterized in that, the inclined to one side injection device of this light beam is a micro electromechanical scanning galvanometer.
9. scanning grenade instrumentation according to claim 1, it is characterized in that, it further comprises on the projected path that at least one optical element is arranged on this second portion light beam between this optical splitter and this inductor, with so that this relatively a small amount of second portion light beam is being projected to this inductor with before forming this second image area, can pass through first this optical element to dwindle or to spread the projection area area of this second portion light beam.
10. scanning grenade instrumentation according to claim 1, it is characterized in that, this optical splitter is the concave surface type optical splitter of a tool concave surface, with so that this scanning light beam when this concave surface type optical splitter, this relatively a small amount of second portion light beam can be projected to by the reflection of this concave surface this inductor again to dwindle the projection area area of this second portion light beam.
11. scanning grenade instrumentation according to claim 1, it is characterized in that, it further comprises at least one changing device, it is to link to be located between at least one inductor, this at least one light source and the inclined to one side injection device of this light beam, in order to according to this second image area of formation that this at least one inductor throws mode of operation with this at least one light source of modulation and the inclined to one side injection device of this light beam.
12. scanning grenade instrumentation according to claim 11, it is characterized in that this changing device further comprises: a counting circuit and the binding of this inductor, a control circuit and this counting circuit link, a light source driving circuit is attached between this light source and this control circuit and the inclined to one side injection device driving circuit of a light beam is attached between the inclined to one side injection device of this light beam and this control circuit.
13. scanning grenade instrumentation according to claim 11 is characterized in that, the mode of operation of this this changing device modulation of light source energy mat comprises the intensity of light beam that this light source sends.
14. scanning grenade instrumentation according to claim 11, it is characterized in that the mode of operation that the inclined to one side injection device of this light beam can this changing device modulation of mat comprises a kind of in the following group or appoints two or more combination: amplitude, frequency, phase place and the mode of motion of partially penetrating.
15. a method for detecting that scans grenade instrumentation is characterized in that, comprises the following step:
The one scan grenade instrumentation is provided; This scanning grenade instrumentation comprises at least one light source in order to produce at least one light beam; And the inclined to one side injection device of a light beam in order at least one light beam of partially penetrating this at least one light source and sending forming scanning light beam, this scanning light beam outwards throws to form the image area of one dimension at least again;
At least one optical splitter is provided, and this optical splitter is arranged on the projected path of scanning light beam between the inclined to one side injection device of this light beam and this image area, with so that this scanning light beam at first's light beam and a default relatively a small amount of second portion light beam that can be divided into a preset ratio a default relatively volume when this optical splitter, wherein this relatively first's light beam of volume can throw outwards to form one corresponding to this first image area of the image area of one dimension at least, wherein this relatively a small amount of second portion light beam can be projected to an inductor further to form one corresponding to this second image area of the image area of one dimension at least at this inductor; And
Provide at least one inductor, in order to detect this second image area.
16. method for detecting according to claim 15 is characterized in that, it further comprises next step:
At least one changing device is provided, this changing device is linked to be located between this inductor, this light source and the inclined to one side injection device of this light beam, in order to this second image area according to formation that this inductor throws, with the mode of operation of this at least one light source of modulation and the inclined to one side injection device of this light beam.
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| CN2011103626846A CN103116219A (en) | 2011-11-16 | 2011-11-16 | Scanning projection device with detecting function and detection methods thereof |
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| CN2011103626846A CN103116219A (en) | 2011-11-16 | 2011-11-16 | Scanning projection device with detecting function and detection methods thereof |
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Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104834161A (en) * | 2014-02-07 | 2015-08-12 | 光宝科技股份有限公司 | Projection apparatus and control method thereof |
| CN105637382A (en) * | 2013-08-19 | 2016-06-01 | 巴斯夫欧洲公司 | Detector for determining a position of at least one object |
| CN109186747A (en) * | 2018-08-01 | 2019-01-11 | 歌尔股份有限公司 | Test macro and test method |
Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US20060250654A1 (en) * | 2005-05-03 | 2006-11-09 | Samsung Electronics Co., Ltd. | Image distortion prevention apparatus and method |
| US20100253860A1 (en) * | 2009-04-07 | 2010-10-07 | Funai Electric Co., Ltd. | Projector |
| US20100302513A1 (en) * | 2009-05-29 | 2010-12-02 | Yoshitaka Takahashi | Projection-type image displaying apparatus |
| CN102096295A (en) * | 2009-12-09 | 2011-06-15 | 宏瞻科技股份有限公司 | Laser projection system |
-
2011
- 2011-11-16 CN CN2011103626846A patent/CN103116219A/en active Pending
Patent Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US20060250654A1 (en) * | 2005-05-03 | 2006-11-09 | Samsung Electronics Co., Ltd. | Image distortion prevention apparatus and method |
| US20100253860A1 (en) * | 2009-04-07 | 2010-10-07 | Funai Electric Co., Ltd. | Projector |
| US20100302513A1 (en) * | 2009-05-29 | 2010-12-02 | Yoshitaka Takahashi | Projection-type image displaying apparatus |
| CN102096295A (en) * | 2009-12-09 | 2011-06-15 | 宏瞻科技股份有限公司 | Laser projection system |
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105637382A (en) * | 2013-08-19 | 2016-06-01 | 巴斯夫欧洲公司 | Detector for determining a position of at least one object |
| CN105637382B (en) * | 2013-08-19 | 2017-08-25 | 巴斯夫欧洲公司 | For the detector for the position for determining at least one object |
| CN104834161A (en) * | 2014-02-07 | 2015-08-12 | 光宝科技股份有限公司 | Projection apparatus and control method thereof |
| CN109186747A (en) * | 2018-08-01 | 2019-01-11 | 歌尔股份有限公司 | Test macro and test method |
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