CN205426086U - Lighting device that colored 3D measurement system used - Google Patents

Abstract

The utility model aims at providing a miniaturized colored 3D measuring equipment, mainly used acquires like the colored three dimensional data in human oral cavity tooth or other limited places in space. A lighting device that colored 3D measurement system used, lighting device includes light source, projecting lens, spectroscope, grating film, the light source is used for illuminating the grating film, the projecting lens is used for the grating film projection play with being illuminated, the spectroscope is half opposite half and passes through the spectroscope, can enough allow the transmission of partial light, can allow another part light reflection's half opposite half to pass through the spectroscope again, the projecting lens with the spectroscope is in same light path, grating film, projecting lens, spectroscope are located in the light path of light source, the grating film receives time sequence control circuit's control, shows the code film in the cycle at the first clock, shows the white light film in the 2nd clock cycle.

Description

A kind of colored 3D measures the illuminator of system

Technical field

This utility model relates to a kind of colored 3D and measures system.

Background technology

Three-dimensional measurement mainly uses the binocular stereo visual sensor that two video cameras or a video camera are constituted with optics mirror-lens system, the multiple image of the same space object is obtained from diverse location or angle shot, the three-dimensional geometric information of object can be obtained based on principle of parallax, rebuild 3D shape and the position of scene around.Three-dimensional measurement generally has a following several method:

The first, structure light vision measures technology.Main by the structure light to measurand projection corresponding modes, by video camera shooting deformation optical strip image, optically-based triangle principle obtains the three-dimensional information of body surface.This technology has become one of effective way solving many on-line measurements such as object surface appearance measurement, spatial position measuring, three-dimensional motion information acquisition, there is the features such as noncontact, dynamic response is fast, system flexibility is good, be widely used in Product rapid design and processing quality control, reverse-engineering and the numerous areas such as automatically control.

The second, phase shift measurement technique (PMP).It is the phase value utilizing several grating fringe images of certain phase contrast to calculate each pixel, then calculates the elevation information of object according to phase value.Detailed process is as follows: first project grating fringe to testee surface, the striped projected is deformed by the shape modulation of body surface, again the stripe pattern of deformation is processed, demodulate the phase information representing object height, eventually pass Carrier-smoothed code and geometrical calculation is obtained with the three-dimensional geometric information on testee surface.PMP method needs the grating fringe image of more than at least three width just can carry out phase calculation, and testee is immovable in shooting process simultaneously, is generally suitable for the three-dimensional measurement of stationary body.

3rd, cofocus scanning technology.Based on an illumination, some imaging and the principle of some detection 3 conjugation, when measured surface is conjugated with test surface, the picture point on point probe is minimum, and the light energy that point probe receives is maximum；When measured surface deviation object point, the picture point on detector becomes big, and the light energy that point probe receives diminishes.Control object point during measurement to overlap with tested surface, it is ensured that the output valve of detector is maximum, just can depict the pattern of measured surface.Confocal measurement method (such as confocal laser scanning microscope) is due to its high accuracy, high-resolution and is easily achieved the digitized unique advantage of three-dimensional imaging and is used widely in fields such as biomedicine, quasiconductor detections.

4th, digital speckle technology, with digital method record speckle image, by mating speckle image before and after deformation, obtains the deformation data of object under test, namely digital speckle correlation measurement method.Here " image " represents the visual carrier of all reactant surface informations, including the image of other forms of laser speckle image, artificial speckle image and reactant region feature.Owing to digital speckle correlation measurement technology has that the acquisition mode to initial data is fairly simple, low to the requirement measuring environment, can directly measure displacement and two groups of information of strain, facilitates implementation the advantages such as Automatic survey, it is used widely in fields such as material stress strain measurement, structure holding capacity analyses.

Additionally, CA2686904A1 also discloses that a kind of hand-held scanner device, it is possible to complete 3-D scanning under two kinds of operator schemes.

But, above-mentioned method for three-dimensional measurement is typically only capable to obtain the three-dimensional geometric information of object under test, and cannot provide full color information.In order to obtain colour information, prior art also occurs in that certain methods, specific as follows:

CN104251995A discloses employing color camera in the introduction to carry out two dimension to scene and takes pictures, then is synthesized with three dimensional point cloud by photochrome, indirectly obtains color three dimension cloud data, generation colorful three-dimensional model.

CN104776815A further discloses in the introduction during measuring three-dimensional profile, two kinds of solutions of Measuring Object colouring information simultaneously: one is projection infrared structure light, plus IR-cut filter plate before the color data camera for obtaining object color information；Two is by the way of stroboscopic structure light, first projecting structural optical, and the image of shooting structure light is used for calculating three-D profile simultaneously, turns off structure light shooting coloured image for calculating the colouring information of object.

CN102980526A further provides spatial digitizer and the scan method thereof obtaining coloured image only with black and white camera.Spatial digitizer disclosed in it, including a projector, at least one black and white camera and a control system.Described projector projects three kinds of monochromatic light of red, green, blue to scanned object respectively.When described projector projects every kind of monochromatic light to scanned object, at least one black and white camera described shoots multiple images of scanned object respectively from multiple angles.Described control system can throw the gray value value as red channel of the image that red light collects using projector, throw the gray value value as green channel of the image that green light collects, to throw the gray value value as blue channel of the image that blue light collects, it is worth to complete coloured image by the triple channel combined, thus obtains the coloured image of the multiple angle of scanned object.

The know-why of CN202074952U is similar with CN102980526A, highlights the most further and only uses the three-dimensional appearance of one camera-single projector and color texture to obtain system.

Disclosing a kind of Aristogrid in CN1426527A, including two photographing units and two projectors, in projector is for projecting the optical grating element of coding pattern on target object surface, and another is for obtaining the texture information of target object.

This utility model is namely based on digital speckle technology and realizes three-dimensional data acquisition, but, the data so obtained are not provided that full color information, therefore, when needs colored structures, matched with three-dimensional data by the image of texture information collected by camera, the three-dimensional object structure of colour can be obtained.

Utility model content

The purpose of this utility model is to provide a kind of miniaturization colour 3D and measures equipment, is mainly used in the color three dimension data acquisition such as human oral cavity tooth or other limited space place.

Illuminator therein includes light source, projection lens, spectroscope, grating egative film；

Light source is used for illuminating grating egative film；Projection lens is for being projected out the grating egative film being illuminated；Spectroscope is half-reflection and half-transmission spectroscope, can either allow some light transmission, can allow for again the half-reflection and half-transmission spectroscope of another part light line reflection；Projection lens and spectroscope are in same light path；

Grating egative film, projection lens, spectroscope are positioned in the light path of light source.

Grating egative film is controlled by sequential control circuit, code displaying egative film within the first clock cycle, shows white light egative film within the second clock cycle.

According in embodiments more of the present utility model, described code film is speckle egative film or striped egative film.

This utility model has following technical effect that

1, use digital speckle measuring method, have the advantages that speed is fast, precision is high, can be applicable to the measurement of dynamic variation targets.

2, use the surface color and polish texture of color texture camera coupling three-dimensional body, the acquisition of 3 D color object data can be realized.

3, it is possible to complete the design of miniaturization, this equipment can be made to be applied to the three-dimensional vision information in limited space place.

Accompanying drawing explanation

Fig. 1 is the system assumption diagram that this utility model colour 3D measures system；

Fig. 2 A-2B is according to 3D of the present utility model measurement and longitudinal sectional drawing of the first embodiment of texture collection device and projection lens；

Fig. 3 A is according to 3D of the present utility model measurement and longitudinal sectional drawing of the second embodiment of texture collection device and projection lens；

Fig. 3 B is according to 3D of the present utility model measurement and longitudinal sectional drawing of the 3rd embodiment of texture collection device and projection lens；

Fig. 3 C is according to 3D of the present utility model measurement and longitudinal sectional drawing of the 4th embodiment of texture collection device and projection lens；

Fig. 3 D is according to 3D of the present utility model measurement and longitudinal sectional drawing of the 5th embodiment of texture collection device and projection lens；

Fig. 4 is the light channel structure schematic diagram of the first embodiment according to illuminator of the present utility model；

Fig. 5 is the light channel structure schematic diagram of the second embodiment according to illuminator of the present utility model；

Fig. 6 A-6C is the light channel structure schematic diagram of the 3rd embodiment according to illuminator of the present utility model；

Fig. 7 A-7D is the light channel structure schematic diagram of the 4th embodiment according to illuminator of the present utility model；

Fig. 8 A-8B is the light channel structure schematic diagram of the 5th embodiment according to illuminator of the present utility model；

Fig. 9 A-9B is the light channel structure schematic diagram of the 6th embodiment according to illuminator of the present utility model；

Figure 10 A-Figure 10 B is the light channel structure schematic diagram of the illuminator according to use grating egative film of the present utility model；

Figure 11 is the logical schematic of certain embodiment according to sequential control circuit of the present utility model.

Detailed description of the invention

For making the purpose of this utility model, technical scheme and advantage clearer, in conjunction with accompanying drawing, this utility model will be described in further detail.This description is that unrestriced mode describes the detailed description of the invention consistent with principle of the present utility model by example, the description of these embodiments is the most detailed, so that those skilled in the art can put into practice this utility model, other embodiments can be used in the case of without departing from scope and spirit of the present utility model and can change and/or replace the structure of each key element.Therefore, the following detailed description should not understood from restrictive, sense.

See Fig. 1, colored 3D of the present utility model and measure system, including: illuminator 200,3D measure and texture collection device 100, sequential control circuit 300, and illuminator 200 farther includes projection lens 210.Sequential control circuit 300, is connected to illuminator 200 and 3D and measures and texture collection device 100.Within the period 1, sequential control circuit 300 controls illuminator 200 and projects coding pattern, and Synchronization Control 3D is measured and texture collection device 100 obtains the first view data；Within second round, sequential control circuit 300 controls illuminator 200 and projects white light, and Synchronization Control 3D is measured and texture collection device 100 obtains the second view data.First image is the view data for generating three-dimensional data, and the second image is the view data of testee color texture.Obviously, the sequencing on period 1 and second round are not free, i.e. those skilled in the art can fully understand that this preferred implementation can also obtain the second view data within the period 1, obtain the first view data within second round.

Fig. 2 A-2B is that Fig. 4 is the light channel structure schematic diagram of the first embodiment according to illuminator of the present utility model according to 3D of the present utility model measurement and longitudinal sectional drawing of the first embodiment of texture collection device and projection lens.The first preferred implementation of the present utility model is described in detail below with reference to Fig. 2 A-2B and Fig. 4.

As shown in Figure 2 A, 3D of the present utility model measures and texture collection device 100 includes the first monochrome cameras the 110, second monochrome cameras 120 and color camera 130.Wherein, the first monochrome cameras 110 and the second monochrome cameras 120 are for obtaining the first view data, and color camera 130 is for obtaining the second view data.Model and/or the parameter of the first monochrome cameras 110 and the second monochrome cameras 120 can be identical, it is also possible to differ, but the most identical.

Preferably, first monochrome cameras the 110, second monochrome cameras 120 and color camera 130 all use telecentric beam path camera lens.

For the position relationship of projection lens, monochrome cameras and color camera, a kind of embodiment is as shown in Figure 2 A, including: projection lens is placed on centre, first monochrome cameras and the second monochrome cameras are positioned at the left and right of projection lens or upper and lower both sides, and color camera is positioned at up/down portion or the left/right portion of projection lens accordingly.Preferably another embodiment is as shown in Figure 2 B, including: projection lens is placed on centre, and the first monochrome cameras, the second monochrome cameras and color camera are placed on the position of 8 points, 4 and 12, all become 120 degree of angles with the line of projection lens.Obviously, the position relationship shown in Fig. 2 A and Fig. 2 B is illustrative, and not restrictive.Such as, projection lens may be located at centre position, it is also possible to the most centrally located；For another example, when projection lens is in an intermediate position, the first monochrome cameras, distance between the second monochrome cameras and color camera and projection lens can be identical, it is also possible to different.It is to be noted; those skilled in the art have the ability to measure according to colored 3D the mechanical design requirements of system completely; adjusting projection lens, monochrome cameras and the position relationship of color camera thus reach to measure and texture collection function with the same or similar 3D of position relationship shown in Fig. 2 A and Fig. 2 B, therefore the diverse location relation of projection lens, monochrome cameras and color camera each falls within protection domain of the present utility model.

And, those skilled in the art also are able to fully understand that the 3D of the present utility model shown in Fig. 3 A-3D measures and the second to the 5th embodiment of texture collection device and projection lens also defers to described above, therefore repeat no more in the explanation of corresponding embodiment.

As shown in Figure 4, illuminator 200 of the present utility model includes the first lighting unit, the second lighting unit, projection lens 210, half-reflection and half-transmission spectroscope 220.Wherein, the first lighting unit includes first light source the 232, first egative film 234, and the second lighting unit includes secondary light source the 236, second egative film 238.First light source 232 can be identical with the model of secondary light source 236 and/or parameter, it is also possible to differs, but the most identical.First light source and secondary light source are preferably LED light source.

First egative film 234 is code film, and coding is preferably used the coding that just can be generated three-dimensional data by single frames collection, to improve the acquisition efficiency of the first image.It is furthermore preferred that coding uses speckle, corresponding code film is speckle egative film such that it is able to be applicable to widely material or color surface.Second egative film 238 is white light egative film, and the light transmissive material sheet with even light action, such as frosted glass plate etc. are preferably used.Obviously, the light source shown in Fig. 4 and egative film position relationship are illustrative, and not restrictive.Such as, the position of the first egative film 234 and the second egative film 238 can be as shown in Figure 4, it is also possible to the two transposition；The position of the first light source 232 and secondary light source 236 can be as shown in Figure 4, it is also possible to the two transposition.

Projection lens 210 is for going out to be formed structure light by the coding pattern/White Light Projection on egative film.

In the first preferred embodiment, sequential control circuit 300 is electrically connected to illuminator 200 and 3D measurement and texture collection device 100.Concrete, sequential control circuit 300 is electrically connected at least to 3D and measures and the first monochrome cameras the 110, second monochrome cameras 120 and color camera 130 of texture collection device 100；Sequential control circuit 300 is also electrically connected at least to the first light source 232 and the secondary light source 236 of illuminator 200.Within the period 1, sequential control circuit 300 drives the first light source 232 to illuminate the first egative film 234, controls the first monochrome cameras 110 simultaneously and the second monochrome cameras 120 obtains the first view data.Within second round, sequential control circuit 300 drives secondary light source 236 to illuminate the second egative film 238, controls color camera 130 simultaneously and obtains the second view data.

As shown in figure 11, sequential control circuit of the present utility model include controller, gyroscope, for driving the first drive circuit of the first light source, for driving the second drive circuit of secondary light source.Under the synchronization of controller, two monochrome cameras and color camera alternately carry out image acquisition to two light source images, in the data that image acquisition moment controller record gyroscope is current.Controller communicates with main frame, and transmits the view data of collection under the control of main frame.The complicated algorithms such as sequence judgement process and calculating are completed, it is achieved real-time image mosaic and display are restored at main frame.Controller can be implemented as FPGA, single-chip microcomputer or other any type of processor or microprocessor.

Half-reflection and half-transmission spectroscope 220, for can either allow some light transmission, can allow for again the spectroscope of another part light line reflection.Such as, half-reflection and half-transmission spectroscope can be that i.e. under the first voltage, it shows as diaphotoscope by voltage-controlled spectroscope, and under the second voltage, it shows as reflecting mirror；Further, sequential control circuit 300 also electrically connects with half-reflection and half-transmission spectroscope, provides first/second voltage or the second/the first voltage to half-reflection and half-transmission spectroscope respectively within period 1 and second round.Preferably, half-reflection and half-transmission spectroscope is realized by plating spectro-film；In this case, sequential control circuit 300 need not electrically connect with half-reflection and half-transmission spectroscope, thus on the premise of completing corresponding function, saves circuit arrangement.Preferably, transmitted ray accounts for the 10%-90% of whole light, and reflection light accounts for the 90%-10% of whole light.It is furthermore preferred that transmitted ray accounts for the 40%-60% of whole light, reflection light accounts for the 60%-40% of whole light.Most preferably, transmitted ray and reflection light are the 50% of whole light.

In the first preferred embodiment, first egative film 234 place plane is vertical with the second egative film 238 place plane, with the first egative film 234 place plane in angle of 45 degrees, half-reflection and half-transmission spectroscope 220 place plane is with the second egative film 238 place plane the most in angle of 45 degrees for half-reflection and half-transmission spectroscope 220 place plane.And, first light source 232, secondary light source 236 and half-reflection and half-transmission spectroscope 220 are placed in place, make light that the first light source 232 sends with the light path of the light that secondary light source 236 sends identical after half-reflection and half-transmission spectroscope 220, it is thus possible to ensure that this preferred implementation has more preferable homogeneity than the technical scheme disclosed in CN1426527A, i.e. enable to intensity of illumination and keep consistent, without the exposure parameter adjusting camera.

Introducing 3D of the present utility model measurement and texture collection device and the second to the 5th embodiment of projection lens below in conjunction with Fig. 3 A-3D, the technology contents identical with the first embodiment repeats no more.

Fig. 3 A is according to 3D of the present utility model measurement and longitudinal sectional drawing of the second embodiment of texture collection device and projection lens.As shown in Figure 3A, 3D of the present utility model measures and texture collection device 100 includes monochrome cameras 140 and color camera 150.

In this embodiment, sequential control circuit 300 is connected to monochrome cameras 140 and color camera 150.Within the period 1, sequential control circuit 300 controls monochrome cameras 140 and color camera 150 obtains the first view data；Within second round, sequential control circuit 300 controls color camera 150 and obtains the second view data.

Compared with the first embodiment, by the multiplexing of color camera 150 in this embodiment, thus decrease a camera, simplify hardware configuration, reduce 3D and measure and the volume of texture collection device 100.

Fig. 3 B is according to 3D of the present utility model measurement and longitudinal sectional drawing of the 3rd embodiment of texture collection device and projection lens.As shown in Figure 3 B, 3D of the present utility model measures and texture collection device 100 includes first color camera the 160, second color camera 170.

In this embodiment, sequential control circuit 300 is connected to the first color camera 160 and the second color camera 170.Within the period 1, sequential control circuit 300 controls the first color camera 160 and the second color camera 170 obtains the first view data；Within second round, 300 sequential control circuits control the first color camera 160 or the second color camera 170 obtains the second view data.

Compared with aforementioned embodiments, this embodiment still can use another color camera obtain the second view data after one color camera loss of function, there is fault tolerance.

Fig. 3 C is according to 3D of the present utility model measurement and longitudinal sectional drawing of the 4th embodiment of texture collection device and projection lens.As shown in Figure 3 C, 3D of the present utility model measures and texture collection device 100 includes monochrome cameras 180.

In this embodiment, sequential control circuit 300 is connected to monochrome cameras 180.Within the period 1, sequential control circuit 300 controls monochrome cameras 180 and obtains the first view data；Within second round, sequential control circuit 300 controls monochrome cameras 180 and obtains the second view data.The mode using monochrome cameras to obtain coloured image is discussed in detail in CN102980526A and CN202074952U, is fully introduced at this.

Compared with aforementioned two embodiments, by the multiplexing of monochrome cameras in this embodiment, it is only necessary to a camera can complete 3D and measure and texture collection function, further simplify hardware configuration, reduces 3D and measures and the volume of texture collection device.

Fig. 3 D is according to 3D of the present utility model measurement and longitudinal sectional drawing of the 5th embodiment of texture collection device and projection lens.As shown in Figure 3 D, 3D of the present utility model measures and texture collection device 100 includes color camera 190.

In this embodiment, sequential control circuit 300 is connected to color camera 190.Within the period 1, sequential control circuit 300 controls color camera 190 and obtains the first view data；Within second round, sequential control circuit 300 controls color camera 190 and obtains the second view data.

Compared with aforementioned embodiments, by using color camera to replace monochrome cameras in this embodiment, shorten the time needing repeatedly to take pictures when obtaining color texture.

Introduce the second to the 6th embodiment of illuminator of the present utility model below in conjunction with Fig. 5-10, the technology contents identical with the first embodiment repeats no more.

Fig. 5 is the light channel structure schematic diagram of the second embodiment according to illuminator of the present utility model.As it is shown in figure 5, illuminator 200 includes projection lens 210, half-reflection and half-transmission spectroscope 220, two-way light source the 246, first egative film the 222, second egative film the 224, first reflecting mirror the 242, second reflecting mirror 244.In this embodiment, first egative film 222 place plane is vertical with the second egative film 224 place plane, half-reflection and half-transmission spectroscope 220 place plane is with the first egative film 234 place plane in angle of 45 degrees, with the second egative film 224 place plane the most in angle of 45 degrees, half-reflection and half-transmission spectroscope the 220, first reflecting mirror the 242, second reflecting mirror 244 place plane is parallel for half-reflection and half-transmission spectroscope 220 place plane.First reflecting mirror 242 is placed on and illuminates in the primary importance of the first egative film 222 by the luminous reflectance that two-way light source 246 is sent, and the second reflecting mirror 244 is placed on and is illuminated in the second position of the second egative film 224 by the luminous reflectance that two-way light source 246 is sent.

In this embodiment, within the period 1, sequential control circuit 300 drives two-way light source 246 to send the light towards the first reflecting mirror 242, to illuminate the first egative film 222.Within second round, sequential control circuit 300 drives two-way light source 246 to send the light towards the second reflecting mirror 244, to illuminate the second egative film 224.

Fig. 6 A-6C is the light channel structure schematic diagram of the 3rd embodiment of illuminator of the present utility model.As shown in figs 6 a-6 c, illuminator 200 includes projection lens 210, half-reflection and half-transmission spectroscope 220, two-way light source the 256, first egative film the 222, second egative film the 224, first reflecting mirror the 252, second reflecting mirror 254.In this embodiment, first egative film 222 place plane is vertical with the second egative film 224 place plane, with the first egative film 222 place plane in angle of 45 degrees, half-reflection and half-transmission spectroscope 220 place plane is with the second egative film 224 place plane the most in angle of 45 degrees for half-reflection and half-transmission spectroscope 220 place plane.

In this embodiment, the first reflecting mirror 252 place plane is vertical with the second reflecting mirror 254 place plane, so that the light that two-way light source 256 is sent can illuminate the second egative film 224 after the first reflecting mirror 252 and the second reflecting mirror 254.Preferably, in embodiment as shown in Figure 6A, with the first egative film 222 place plane in angle of 45 degrees, the second reflecting mirror 254 place plane is with the second egative film 224 place plane in angle of 45 degrees for the first reflecting mirror 252 place plane.In another embodiment, as shown in figures 6 b-6 c, first reflecting mirror 252 place plane becomes more than or less than 45 degree of angles with the first egative film 222 place plane, and the second reflecting mirror 254 place plane becomes corresponding less than or greater than 45 degree of angles with the second egative film 224 place plane.

In this embodiment, within the period 1, sequential control circuit 300 drives two-way light source 256 to send the light towards the first egative film 222, to illuminate the first egative film 222.Within second round, sequential control circuit 300 drives two-way light source 256 to send towards the first reflecting mirror 252 and light of the second reflecting mirror 254, to illuminate the second egative film 224.

Compared with aforementioned two kinds of embodiments, this embodiment can fully ensure that the motility of each ingredient mechanical layout design of illuminator.

Fig. 7 A-7D is the light channel structure schematic diagram of the 4th embodiment according to illuminator of the present utility model.As shown in figures 7 a-7d, illuminator 200 includes projection lens 210, light source the 262, first egative film the 222, second egative film 224 and rotary shaft 264.In this embodiment, the first egative film 222 and the second egative film 224 are all fixed in rotary shaft 264.In this embodiment, within the period 1 (as shown in Fig. 7 A or 7C), sequential control circuit 300 controls rotary shaft 264 and rotates, and is placed in the light path of light source 262 by the first egative film 222, simultaneously drives light source 262 and illuminates the first egative film 222.Within second round (as shown in Fig. 7 B or 7D), sequential control circuit 300 controls rotary shaft 264 and rotates, and is placed in the light path of light source 262 by the second egative film 224, simultaneously drives light source 262 and illuminates the second egative film 224.

In a kind of embodiment, side view as shown in figs. 7 a-b, the first egative film 222 and the second egative film 224 are all secured directly in rotary shaft 264.

In preferred another embodiment, front view as shown in figs. 7 c and 7d, the first egative film 222 and the second egative film 224 are fixed in rotary shaft 264 by head rod (not showing reference) and the second connecting rod (not showing reference) respectively.It is furthermore preferred that the angle between head rod and the second connecting rod is configured to so that the first egative film 222 and the second adjacent angle of egative film 224 are minimum, so that the space needed for illuminator is minimum.

Compared with aforementioned embodiments, in this embodiment, illuminator no longer includes the ingredients such as half-reflection and half-transmission spectroscope and reflecting mirror, and has only to a light source, therefore, it is possible to effectively reduce the volume of illuminator.

Fig. 8 A-8B is the light channel structure schematic diagram of the 5th embodiment according to illuminator of the present utility model.As shown in figures 8 a-8b, illuminator 200 includes projection lens 210, light source the 262, first egative film the 222, second egative film 224 and drive mechanism (not shown).Obviously the upper underdrive that the direction of motion of drive mechanism can show such as Fig. 8 A-8B, it is also possible to left and right transmission.

In this embodiment, within the period 1 (as shown in Figure 8 A), sequential control circuit 300 controls drive mechanism, is placed in the light path of light source 262 by the first egative film 222, simultaneously drives light source 262 and illuminates the first egative film 222.Within second round (as shown in Figure 8 B), sequential control circuit 300 controls drive mechanism, is placed in the light path of light source 262 by the second egative film 224, simultaneously drives light source 262 and illuminates the second egative film 224.

Similar with the 4th embodiment shown in Fig. 7 A-7D, in this embodiment, illuminator no longer includes the ingredients such as half-reflection and half-transmission spectroscope and reflecting mirror, and has only to a light source, therefore, it is possible to effectively reduce the volume of illuminator.

Fig. 9 A-9B is the light channel structure schematic diagram of the 6th embodiment according to illuminator of the present utility model.As shown in figs. 9 a-9b, illuminator 200 includes projection lens 210, light source the 262, first egative film the 222, second egative film the 224, first spool 272 and the second spool 274.Wherein, the first egative film 222 and the second egative film 224 are flexible material and make.The vertical scrolling that the direction of motion of obvious first spool 272 and the second spool 274 can show such as Fig. 9 A-9B, it is also possible to horizontal scrolling.

In this embodiment, within the period 1 (as shown in Figure 9 A), sequential control circuit 300 controls the first spool 272 and the second spool 274, first egative film 222 is placed in the light path of light source 262, by the second egative film volume 224 on the second spool 274, simultaneously drive light source 262 and illuminate the first egative film 222.Within second round (as shown in Figure 9 B), sequential control circuit 300 controls the first spool 272 and the second spool 274, second egative film 224 is placed in the light path of light source 262, by the first egative film volume 222 on the first spool 272, simultaneously drives light source 262 and illuminate the second egative film 224.

Compared with fourth, fifth embodiment shown in Fig. 7 A-7D and Fig. 8 A-8B, this embodiment can reduce the volume of illuminator further.

Figure 10 A-Figure 10 B is the light channel structure schematic diagram of the illuminator according to use grating egative film of the present utility model.

As shown in Figure 10 A, illuminator 200 includes projection lens 210, light source 410, grating egative film 420.

As shown in Figure 10 B, illuminator 200 includes projection lens 210, light source 262, grating egative film 420, reflecting mirror 440.Preferably, reflecting mirror 440 becomes 45 degree of angles with the incident illumination of light source 262；It is furthermore preferred that reflecting mirror 440 becomes 60 degree of angles with the incident illumination of light source 262.

In this embodiment, within the period 1, sequential control circuit 300 controls grating egative film 420 and forms code film, and within second round, sequential control circuit 300 controls grating egative film 420 and forms white light egative film.

Compared with aforementioned embodiments, in this embodiment, the frame for movement of illuminator is simpler so that the volume of illuminator is less.

Additionally, according to disclosed description of the present utility model, other realizations of the present utility model will be apparent to practitioners skilled in this.The various aspects of embodiment and/or embodiment can be individually or with any combination in system and method for the present utility model.Description and example therein should be only be regarded solely as exemplary, actual range of the present utility model and spirit represented by appended claims.

Claims (2)

1. the illuminator of a colored 3D measurement system, it is characterised in that:

Described illuminator includes light source, projection lens, spectroscope, grating egative film；

Described light source is used for illuminating described grating egative film；Described projection lens is for being projected out the grating egative film being illuminated；Described spectroscope is half-reflection and half-transmission spectroscope, can either allow some light transmission, can allow for again the half-reflection and half-transmission spectroscope of another part light line reflection；Described projection lens and described spectroscope are in same light path；

Described grating egative film, projection lens, spectroscope are positioned in the light path of described light source；

Described grating egative film is controlled by sequential control circuit, code displaying egative film within the first clock cycle, shows white light egative film within the second clock cycle.

Illuminator the most according to claim 1, wherein, described code film is speckle egative film or striped egative film.