CN205317164U - Lighting device that colored 3D measurement system used - Google Patents
Lighting device that colored 3D measurement system used Download PDFInfo
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- CN205317164U CN205317164U CN201521046379.6U CN201521046379U CN205317164U CN 205317164 U CN205317164 U CN 205317164U CN 201521046379 U CN201521046379 U CN 201521046379U CN 205317164 U CN205317164 U CN 205317164U
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Abstract
The utility model provides a lighting device that colored 3D measurement system used, include: an illumination element, the 2nd illumination element, projecting lens, spectroscope. An illumination element includes first light source, first film, and the 2nd illumination element includes secondary light source, second film. First film is the code film, and the second film is the white light film. First light source is used for illuminating first film, and the secondary light source is used for illuminating the second film. The projecting lens is used for first film and second 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. Projecting lens and spectroscope are in same light path. First film place plane is perpendicular with second film place plane, and spectroscope place plane becomes 45 degrees contained angles with first film place plane, and spectroscope place plane and second film belong to 45 degrees contained angles of plane one -tenth. The light path of the light that light sum secondary light source that first light source sent is the same behind the spectroscope.
Description
Technical field
The utility model relates to a kind of colored 3D measuring system.
Background technology
Three-dimensional measurement mainly adopts two pick up cameras or the binocular stereo visual sensor of a pick up camera and optics catadioptric System's composition, several images of the same space object are obtained from different positions or angle shooting, 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 has following several method usually:
The first, structure light vision measuring technology. Mainly through projecting the structure light of corresponding modes to tested object, by pick up camera shooting distortion optical strip image, obtain the three-dimensional information of body surface based on optical triangulation theory. This technology has become one of effective ways of many on-line measurements such as solving 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, it is widely used in product and designs fast and processing quality control, reverse-engineering and the automatic numerous areas such as control.
Two, phase shift measurement technique (PMP). It is the phase place value utilizing several grating fringe images of certain phase differential to calculate each pixel, then calculates the elevation information of object according to phase place value. Detailed process is as follows: first to testee surface projection grating fringe, the striped projected is subject to the shape modulation of body surface and produces distortion, again the stripe pattern of distortion is processed, demodulate the phase place information representing object height, eventually pass Carrier-smoothed code and geometrical calculation just can obtain 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 can not move in shooting process simultaneously, is generally suitable for the three-dimensional measurement of static object.
Three, cofocus scanning technology.Based on the principle of an illumination, some imaging and some detection 3 conjugation, when measured surface and detection face conjugation, the picture point on point probe is minimum, and the luminous energy that point probe receives is maximum; When measured surface deviates thing point, the picture point on detector becomes big, and the luminous energy that point probe receives diminishes. Measure control thing point to overlap with tested surface, ensure that the output value of detector is maximum, just can depict the shape looks of measured surface. Confocal measurement method (such as confocal laser scanning microscope) is used widely in fields such as biomedicine, semi-conductor detections due to its high precision, high resolving power and the unique advantage that is easy to realize three-dimensional imaging digitizing.
Four, digital speckle technology, with numerical approach record speckle image, by being mated by speckle image before and after deformation, obtains the deformation data of object under test, is also exactly digital speckle correlation measurement method. Here " image " represents the visual carrier of all reactant surface informations, comprises the other forms of image of laser speckle image, artificial speckle image and reactant region feature. Due to digital speckle correlation measurement technology have the acquisition mode to raw data fairly simple, the requirement of measurement environment is low, can directly Displacement Measurement and strain two groups of information, be convenient to realize the advantages such as Automatic survey, be used widely in fields such as material stress strain-gauging, structure holding capacity analyses.
In addition, CA2686904A1 also discloses a kind of hand-held scanner device, it is possible under two kinds of operator schemes, complete three dimension scanning.
But, above-mentioned method for three-dimensional measurement can only obtain the three-dimensional geometric information of object under test usually, and cannot provide full color information. In order to obtain chromatic information, prior art also occurs certain methods, specific as follows:
CN104251995A discloses in the introduction and adopts color camera scene is carried out two dimension to take pictures, then photochrome and three dimensional point cloud is synthesized, and indirectly obtains color three dimension cloud data, generation colorful three-dimensional model.
CN104776815A further discloses in the introduction in measuring three-dimensional profile process, simultaneously two kinds of solutions of Measuring Object colouring information: one is projection infrared structure light, adding IR-cut filter plate before obtaining the colored digital camera of object colouring information; Two is the mode by frequently dodging structure light, and first projecting structural optical, the image simultaneously taking structure light is for calculating three-D profile, then closing structure light color image shot is for calculating the colouring information of object.
CN102980526A further provides the three dimension scanning instrument and the scan method thereof that only adopt black and white camera to obtain coloured image. Three dimension scanning instrument disclosed in it, comprises a projector, at least one black and white camera and a Controlling System. Described projector projects red, green, blue three kinds of monochromatic ray respectively to scanned object. When described projector projects often kind of monochromatic ray to scanned object, multiple images of scanned object taken respectively by least one black and white camera described from multiple angle. Described Controlling System can throw the value of gray-scale value as red channel of the image that red light collects using projector, throw the value of gray-scale value as green channel of the image that green light collects, to throw the value of gray-scale value as blue channel of the image that blue light collects, obtain complete coloured image by the triple channel value combined, thus obtain the coloured image of the multiple angle of scanned object.
Know-why and the CN102980526A of CN202074952U are similar, wherein highlight the three-dimensional appearance only using one camera-single projector and color texture acquisition system further.
Disclosing a kind of digitizing device in CN1426527A, comprising two photographic cameras and two projectors, in projector is for the grating element of projection code pattern on target object surface, and another is for obtaining the texture information of target object.
The utility model is exactly realize three dimension data based on digital speckle technology to obtain, but, the data obtained like this can not provide full color information, therefore, when the colored structure of needs, by the image of texture information collected by camera and three-dimensional data match, colored three-dimensional object structure can be obtained.
Practical novel content
The purpose of this utility model is to provide the colored 3D metering facility of a kind of miniaturization, is mainly used in the color three dimension data such as human oral cavity tooth or other limited space place and obtains. Means of illumination wherein, comprising: the first lighting unit, the 2nd lighting unit, projection lens, spectroscope.
First lighting unit comprises the first light source, the first egative film, and the 2nd lighting unit comprises the 2nd light source, the 2nd egative film.
First egative film is code film, and the 2nd egative film is white light egative film. First light source is used for illuminating the first egative film, and the 2nd light source is used for illuminating the 2nd egative film.
Projection lens is for projecting out the first egative film being illuminated and the 2nd egative film. Spectroscope is half-reflection and half-transmission spectroscope, can either allow part light transmission, can allow again the half-reflection and half-transmission spectroscope of another part light reflection. Projection lens and spectroscope are in same light path.
In angle of 45 degrees, spectroscope place plane and the 2nd egative film place plane are in angle of 45 degrees for first egative film place plane and the 2nd egative film place plane orthogonal, spectroscope place plane and the first egative film place plane.
The light path of the light that the light that the first light source sends sends with the 2nd light source is identical after spectroscope.
According to, in enforcement modes more of the present utility model, described code film is loose spot egative film or striped egative film.
The utility model has following technique effect:
1, adopt digital speckle measuring method, have the advantages that speed is fast, precision is high, can be applicable to the measurement of dynamic change target.
2, adopt the surface color and polish texture of color texture camera coupling three-dimensional body, it may be achieved the acquisition of 3 D color object data.
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 of the colored 3D measuring system of the utility model;
Fig. 2 A-2B is according to longitudinal sectional elevation of 3D of the present utility model measurement and the first enforcement mode of texture collection device and projection lens;
Fig. 3 A is according to longitudinal sectional elevation of 3D of the present utility model measurement and the 2nd enforcement mode of texture collection device and projection lens;
Fig. 3 B is according to longitudinal sectional elevation of 3D of the present utility model measurement and the 3rd enforcement mode of texture collection device and projection lens;
Fig. 3 C is according to longitudinal sectional elevation of 3D of the present utility model measurement and the 4th enforcement mode of texture collection device and projection lens;
Fig. 3 D is according to longitudinal sectional elevation of 3D of the present utility model measurement and the 5th enforcement mode of texture collection device and projection lens;
Fig. 4 is the light channel structure schematic diagram of the enforcement mode of first according to means of illumination of the present utility model;
Fig. 5 is the light channel structure schematic diagram of the enforcement mode of the 2nd according to means of illumination of the present utility model;
Fig. 6 A-6C is the light channel structure schematic diagram of the enforcement mode of the 3rd according to means of illumination of the present utility model;
Fig. 7 A-7D is the light channel structure schematic diagram of the enforcement mode of the 4th according to means of illumination of the present utility model;
Fig. 8 A-8B is the light channel structure schematic diagram of the enforcement mode of the 5th according to means of illumination of the present utility model;
Fig. 9 A-9B is the light channel structure schematic diagram of the enforcement mode of the 6th according to means of illumination of the present utility model;
Figure 10 A-Figure 10 B is the light channel structure schematic diagram of the means of illumination 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.
Embodiment
For making the purpose of this utility model, technical scheme and advantage clearly, will by reference to the accompanying drawings the utility model be described in further detail. The mode that this kind of description is unrestricted by example describes the embodiment consistent with principle of the present utility model, these implement the description of mode is enough detailed, so that those skilled in the art can put into practice the utility model, other enforcement modes can be used when not departing from scope and spirit of the present utility model and can change and/or replace the structure of each key element. Therefore, it should not when understanding the following detailed description on restrictive, sense.
See Fig. 1, colored 3D measuring system of the present utility model, comprising: means of illumination 200,3D measure and texture collection device 100, sequential control circuit 300, and means of illumination 200 comprises projection lens 210 further. Sequential control circuit 300, is connected to means of illumination 200 and 3D measures and texture collection device 100. Within the period 1, sequential control circuit 300 controls means of illumination 200 and projects coding pattern, and synchronization control 3D measures and texture collection device 100 obtains the first view data; Within second cycle, sequential control circuit 300 controls means of illumination 200 and projects white light, and synchronization control 3D measures and texture collection device 100 obtains the 2nd view data. First image is the view data for generating three dimension data, and the 2nd image is the view data of testee color texture. Obviously, the sequencing on having no time period 1 and second cycle, namely those skilled in the art can fully understand that this preferred implementation can also obtain the 2nd view data within the period 1, obtains the first view data within second cycle.
Fig. 2 A-2B is that Fig. 4 is the light channel structure schematic diagram of the enforcement mode of first according to means of illumination of the present utility model according to longitudinal sectional elevation of 3D of the present utility model measurement and the first enforcement mode of texture collection device and projection lens. Below with reference to Fig. 2 A-2B and Fig. 4, the first preferred implementation of the present utility model is described in detail.
As shown in Figure 2 A, 3D of the present utility model measurement and texture collection device 100 comprise the first monochrome cameras 110, the 2nd monochrome cameras 120 and color camera 130. Wherein, the first monochrome cameras 110 and the 2nd monochrome cameras 120 are for obtaining the first view data, and color camera 130 is for obtaining the 2nd view data. Model and/or the parameter of the first monochrome cameras 110 and the 2nd monochrome cameras 120 can be identical, it is also possible to not identical, but preferably identical.
Preferably, the first monochrome cameras 110, the 2nd monochrome cameras 120 and color camera 130 all adopt telecentric beam path camera lens.
For the position relation of projection lens, monochrome cameras and color camera, preferred a kind of enforcement mode is as shown in Figure 2 A, comprise: projection lens is placed on centre, first monochrome cameras and the 2nd 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.Another kind preferred implements mode as shown in Figure 2 B, comprising: projection lens is placed on centre, and the first monochrome cameras, the 2nd 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 relation shown in Fig. 2 A and Fig. 2 B is exemplary, but not restrictive. Such as, projection lens can be positioned at mid-way, it is also possible to is not positioned at mid-way; For another example, when projection lens is in mid-way, the distance of the first monochrome cameras, the 2nd between monochrome cameras and color camera and projection lens can be identical, it is also possible to different. It is to be noted; the completely capable Machine Design requirement according to colored 3D measuring system of those skilled in the art; adjusting the position relation of projection lens, monochrome cameras and color camera thus reach the same or similar 3D with position relation shown in Fig. 2 A and Fig. 2 B and measure and texture collection function, therefore the different positions relation of projection lens, monochrome cameras and color camera all falls into protection domain of the present utility model.
And, those skilled in the art also can fully understand that the 3D of the present utility model shown in Fig. 3 A-3D measures and the 2nd to the 5th enforcement mode of texture collection device and projection lens also defers to above-mentioned explanation, therefore repeats no more in the explanation of corresponding enforcement mode.
As shown in Figure 4, means of illumination 200 of the present utility model comprises the first lighting unit, the 2nd lighting unit, projection lens 210, half-reflection and half-transmission spectroscope 220. Wherein, the first lighting unit comprises the first light source 232, first egative film the 234, two lighting unit and comprises the 2nd light source 236, the 2nd egative film 238. Model and/or the parameter of the first light source 232 and the 2nd light source 236 can be identical, it is also possible to not identical, but preferably identical. First light source and the 2nd light source are preferably LED/light source.
First egative film 234 is code film, and coding preferably uses the coding that just can be generated three dimension data by single frame collection, to improve the acquisition efficiency of the first image. Preferred, coding uses loose spot, and corresponding code film is loose spot egative film such that it is able to be applicable to material or color surface widely. 2nd egative film 238 is white light egative film, it is preferred to use have the light transmissive material sheet of even light action, such as frosted glass plate etc. Obviously, the light source shown in Fig. 4 and egative film position relation are exemplary, but not restrictive. Such as, the position of the first egative film 234 and the 2nd 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 the 2nd 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 means of illumination 200 and 3D and measures and texture collection device 100. Concrete, sequential control circuit 300 is at least electrically connected to 3D and measures and the first monochrome cameras 110 of texture collection device 100, the 2nd monochrome cameras 120 and color camera 130; Sequential control circuit 300 is also at least electrically connected to the first light source 232 and the 2nd light source 236 of means of illumination 200. Within the period 1, sequential control circuit 300 drives the first light source 232 to illuminate the first egative film 234, obtains the first view data with control first monochrome cameras 110 and the 2nd monochrome cameras 120. Within second cycle, sequential control circuit 300 drives the 2nd light source 236 to illuminate the 2nd egative film 238, obtains the 2nd view data with control color camera 130.
As shown in figure 11, sequential control circuit of the present utility model comprise controller, gyrostat, for driving the first driving circuit of the first light source, for driving the 2nd driving circuit of the 2nd light source. Controller synchronous under, two light source images are alternately carried out image collection by two monochrome cameras and color camera, gather the current data of moment controller record gyrostat at image. 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 treater or the microprocessor of FPGA, micro-chip or other any types.
Half-reflection and half-transmission spectroscope 220, for can either allow part light transmission, can allow again the spectroscope of another part light reflection. Such as, half-reflection and half-transmission spectroscope can be the spectroscope of powered pressure-controlled, and namely under the first voltage, it shows as diaphotoscope, and under the 2nd voltage, it shows as speculum; Further, sequential control circuit 300 is also electrically connected with half-reflection and half-transmission spectroscope, provides the first/two voltage or the two/the first voltage respectively within period 1 and second cycle to half-reflection and half-transmission spectroscope. Preferably, half-reflection and half-transmission spectroscope is realized by plating spectro-film; In this case, sequential control circuit 300 need not be electrically connected with half-reflection and half-transmission spectroscope, thus under the prerequisite 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. Preferred, transmitted ray accounts for the 40%-60% of whole light, and 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 and the 2nd egative film 238 place plane orthogonal, in angle of 45 degrees, half-reflection and half-transmission spectroscope 220 place plane and the 2nd egative film 238 place plane are also in angle of 45 degrees for half-reflection and half-transmission spectroscope 220 place plane and the first egative film 234 place plane. And, first light source 232, the 2nd light source 236 and half-reflection and half-transmission spectroscope 220 are placed on suitable position, the light that first light source 232 is sent and the light path of the light that the 2nd light source 236 sends are identical after half-reflection and half-transmission spectroscope 220, it is thus possible to ensure that this preferred implementation has better homogeneity than technical scheme disclosed in CN1426527A, namely intensity of illumination can be made to be consistent, and the exposure parameter of camera need not be adjusted.
Introduce the 2nd to the 5th enforcement mode of 3D of the present utility model measurement and texture collection device and projection lens below in conjunction with Fig. 3 A-3D, the technology contents identical with the first enforcement mode repeats no more.
Fig. 3 A is according to longitudinal sectional elevation of 3D of the present utility model measurement and the 2nd enforcement mode of texture collection device and projection lens. As shown in Figure 3A, 3D of the present utility model measurement and texture collection device 100 comprise monochrome cameras 140 and color camera 150.
In this enforcement mode, 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 cycle, sequential control circuit 300 controls color camera 150 and obtains the 2nd view data.
Compared with the first enforcement mode, by the multiplexing of color camera 150 in this enforcement mode, thus decrease a camera, simplify hardware structure, reduce the volume of 3D measurement and texture collection device 100.
Fig. 3 B is according to longitudinal sectional elevation of 3D of the present utility model measurement and the 3rd enforcement mode of texture collection device and projection lens. As shown in Figure 3 B, 3D of the present utility model measurement and texture collection device 100 comprise the first color camera 160, the 2nd color camera 170.
In this enforcement mode, sequential control circuit 300 is connected to the first color camera 160 and the 2nd color camera 170. Within the period 1, sequential control circuit 300 controls the first color camera 160 and the 2nd color camera 170 obtains the first view data; Within second cycle, 300 sequential control circuits control the first color camera 160 or the 2nd color camera 170 obtains the 2nd view data.
Compared with aforementioned embodiments, this enforcement mode still can use another color camera obtain the 2nd view data after a color camera loss of function, there is fault tolerance.
Fig. 3 C is according to longitudinal sectional elevation of 3D of the present utility model measurement and the 4th enforcement mode of texture collection device and projection lens. As shown in Figure 3 C, 3D of the present utility model measurement and texture collection device 100 comprise monochrome cameras 180.
In this enforcement mode, 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 cycle, sequential control circuit 300 controls monochrome cameras 180 and obtains the 2nd view data. The mode using monochrome cameras to obtain coloured image has detail in CN102980526A and CN202074952U, introduces completely at this.
Compared with aforementioned two enforcement modes, by the multiplexing of monochrome cameras in this enforcement mode, it is only necessary to a camera can complete 3D and measure and texture collection function, further simplify hardware structure, reduces the volume of 3D measurement and texture collection device.
Fig. 3 D is according to longitudinal sectional elevation of 3D of the present utility model measurement and the 5th enforcement mode of texture collection device and projection lens. As shown in Figure 3 D, 3D of the present utility model measurement and texture collection device 100 comprise color camera 190.
In this enforcement mode, 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 cycle, sequential control circuit 300 controls color camera 190 and obtains the 2nd view data.
Compared with aforementioned embodiments, this enforcement mode replaces monochrome cameras with the use of color camera, shorten the time needing when obtaining color texture repeatedly to take pictures.
Introduce the 2nd to the 6th enforcement mode of means of illumination of the present utility model below in conjunction with Fig. 5-10, the technology contents identical with the first enforcement mode repeats no more.
Fig. 5 is the light channel structure schematic diagram of the enforcement mode of the 2nd according to means of illumination of the present utility model. As shown in Figure 5, means of illumination 200 comprises projection lens 210, half-reflection and half-transmission spectroscope 220, two-way light source 246, first egative film 222, the 2nd egative film 224, first speculum 242, two-mirror 244. In this enforcement mode, first egative film 222 place plane and the 2nd egative film 224 place plane orthogonal, half-reflection and half-transmission spectroscope 220 place plane and the first egative film 234 place plane are in angle of 45 degrees, half-reflection and half-transmission spectroscope 220 place plane and the 2nd egative film 224 place plane also in angle of 45 degrees, half-reflection and half-transmission spectroscope 220, first speculum 242, two-mirror 244 place plane parallel.First speculum 242 is placed on and illuminates in the first location of the first egative film 222 by the luminous reflectance that two-way light source 246 sends, and two-mirror 244 is placed on and is illuminated in the second position of the 2nd egative film 224 by the luminous reflectance that two-way light source 246 sends.
In this enforcement mode, within the period 1, sequential control circuit 300 drives two-way light source 246 to send the light towards the first speculum 242, to illuminate the first egative film 222. Within second cycle, sequential control circuit 300 drives two-way light source 246 to send the light towards two-mirror 244, to illuminate the 2nd egative film 224.
Fig. 6 A-6C is the light channel structure schematic diagram of the 3rd enforcement mode of means of illumination of the present utility model. As shown in figs 6 a-6 c, means of illumination 200 comprises projection lens 210, half-reflection and half-transmission spectroscope 220, two-way light source 256, first egative film 222, the 2nd egative film 224, first speculum 252, two-mirror 254. In this enforcement mode, first egative film 222 place plane and the 2nd egative film 224 place plane orthogonal, in angle of 45 degrees, half-reflection and half-transmission spectroscope 220 place plane and the 2nd egative film 224 place plane are also in angle of 45 degrees for half-reflection and half-transmission spectroscope 220 place plane and the first egative film 222 place plane.
In this enforcement mode, the first speculum 252 place plane and two-mirror 254 place plane orthogonal, so that the light that two-way light source 256 sends can illuminate the 2nd egative film 224 after the first speculum 252 and two-mirror 254. Preferably, in enforcement mode as shown in Figure 6A, in angle of 45 degrees, two-mirror 254 place plane and the 2nd egative film 224 place plane are in angle of 45 degrees for the first speculum 252 place plane and the first egative film 222 place plane. In another embodiment, as shown in figures 6 b-6 c, first speculum 252 place plane becomes to be greater than or less than 45 degree of angles with the first egative film 222 place plane, and two-mirror 254 place plane becomes corresponding and is less than or greater than 45 degree of angles to the 2nd egative film 224 place plane.
In this enforcement mode, 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 cycle, sequential control circuit 300 drives two-way light source 256 to send the light towards the first speculum 252 and two-mirror 254, to illuminate the 2nd egative film 224.
Compared with aforementioned two kinds of enforcement modes, this enforcement mode can fully ensure the handiness of each integral part mechanical layout design of means of illumination.
Fig. 7 A-7D is the light channel structure schematic diagram of the enforcement mode of the 4th according to means of illumination of the present utility model. As shown in figures 7 a-7d, means of illumination 200 comprises projection lens 210, light source 262, first egative film 222, the 2nd egative film 224 and turning axle 264. In this enforcement mode, the first egative film 222 and the 2nd egative film 224 are all fixed on turning axle 264. In this enforcement mode, within the period 1 (as shown in Fig. 7 A or 7C), sequential control circuit 300 controls turning axle 264 and rotates, and is placed in the light path of light source 262 by the first egative film 222, drives light source 262 to illuminate the first egative film 222 simultaneously. Within second cycle (as shown in Fig. 7 B or 7D), sequential control circuit 300 controls turning axle 264 and rotates, and is placed in the light path of light source 262 by the 2nd egative film 224, drives light source 262 to illuminate the 2nd egative film 224 simultaneously.
In preferred a kind of enforcement mode, side-view as shown in figs. 7 a-b, the first egative film 222 and the 2nd egative film 224 are all secured directly on turning axle 264.
In preferred another kind of enforcement mode, front view as shown in figs. 7 c and 7d, the first egative film 222 and the 2nd egative film 224 are fixed on turning axle 264 by head rod (not showing Reference numeral) and the 2nd union lever (not showing Reference numeral) respectively. Preferred, the angle between head rod and the 2nd union lever is set to make the first egative film 222 and the 2nd adjacent angle of egative film 224 minimum, so that the space needed for means of illumination is minimum.
Compared with aforementioned embodiments, in this enforcement mode, means of illumination no longer comprises the integral parts such as half-reflection and half-transmission spectroscope and speculum, and only needs a light source, therefore, it is possible to effectively reduce the volume of means of illumination.
Fig. 8 A-8B is the light channel structure schematic diagram of the enforcement mode of the 5th according to means of illumination of the present utility model. As shown in figures 8 a-8b, means of illumination 200 comprises projection lens 210, light source 262, first egative film 222, the 2nd egative film 224 and transmission rig (not shown). The direction of motion of obvious transmission rig can such as the upper underdrive of Fig. 8 A-8B display, it is also possible to left and right transmission.
In this enforcement mode, within the period 1 (as shown in Figure 8 A), sequential control circuit 300 controls transmission rig, is placed in the light path of light source 262 by the first egative film 222, drives light source 262 to illuminate the first egative film 222 simultaneously. Within second cycle (as shown in Figure 8 B), sequential control circuit 300 controls transmission rig, is placed in the light path of light source 262 by the 2nd egative film 224, drives light source 262 to illuminate the 2nd egative film 224 simultaneously.
Similar with the 4th enforcement mode shown in Fig. 7 A-7D, in this enforcement mode, means of illumination no longer comprises the integral parts such as half-reflection and half-transmission spectroscope and speculum, and only needs a light source, therefore, it is possible to effectively reduce the volume of means of illumination.
Fig. 9 A-9B is the light channel structure schematic diagram of the enforcement mode of the 6th according to means of illumination of the present utility model. As shown in figs. 9 a-9b, means of illumination 200 comprises projection lens 210, light source 262, first egative film 222, the 2nd egative film 224, first spool 272 and volume Two axle 274. Wherein, the first egative film 222 and the 2nd egative film 224 are flexible materials and make. Obvious first spool 272 can move by the vertical volume as Fig. 9 A-9B shows with the direction of motion of volume Two axle 274, it is also possible to horizontal roll is moved.
In this enforcement mode, within the period 1 (as shown in Figure 9 A), sequential control circuit 300 controls the first spool 272 and volume Two axle 274, first egative film 222 is placed in the light path of light source 262,2nd egative film 224 is twisted on volume Two axle 274, drives light source 262 to illuminate the first egative film 222 simultaneously. Within second cycle (as shown in Figure 9 B), sequential control circuit 300 controls the first spool 272 and volume Two axle 274,2nd egative film 224 is placed in the light path of light source 262, the first egative film 222 is twisted on the first spool 272, drive light source 262 to illuminate the 2nd egative film 224 simultaneously.
Comparing with fourth, fifth enforcement mode shown in Fig. 8 A-8B with Fig. 7 A-7D, this enforcement mode can reduce the volume of means of illumination further.
Figure 10 A-Figure 10 B is the light channel structure schematic diagram of the means of illumination according to use grating egative film of the present utility model.
As shown in Figure 10 A, means of illumination 200 comprises projection lens 210, light source 410, grating egative film 420.
As shown in Figure 10 B, means of illumination 200 comprises projection lens 210, light source 262, grating egative film 420, speculum 440.Preferably, speculum 440 becomes 45 degree of angles with the incident light of light source 262; Preferred, speculum 440 becomes 60 degree of angles with the incident light of light source 262.
In this enforcement mode, within the period 1, sequential control circuit 300 controls grating egative film 420 and forms code film, and within second cycle, sequential control circuit 300 controls grating egative film 420 and forms white light egative film.
Compared with aforementioned embodiments, in this enforcement mode, the physical construction of means of illumination is simpler so that the volume of means of illumination is less.
In addition, according to disclosed specification sheets of the present utility model, it is obvious that of the present utility model other realize the technician for this area. The all respects of enforcement mode and/or the mode of enforcement can be used in system and method for the present utility model separately or with any combination. Specification sheets and example wherein should be only regard as exemplary, and actual scope and spirit of the present utility model are represented by appended claims.
Claims (2)
1. the means of illumination of a colored 3D measuring system, it is characterised in that comprising: the first lighting unit, the 2nd lighting unit, projection lens, spectroscope;
Described first lighting unit comprises the first light source, the first egative film, and described 2nd lighting unit comprises the 2nd light source, the 2nd egative film;
Described first egative film is code film, and described 2nd egative film is white light egative film; Described first light source is used for illuminating described first egative film, and described 2nd light source is used for illuminating described 2nd egative film;
Described projection lens is for projecting out the first egative film being illuminated and the 2nd egative film; Described spectroscope is half-reflection and half-transmission spectroscope, can either allow part light transmission, can allow again the half-reflection and half-transmission spectroscope of another part light reflection; Described projection lens and described spectroscope are in same light path;
In angle of 45 degrees, described spectroscope place plane and described 2nd egative film place plane are in angle of 45 degrees for described first egative film place plane and described 2nd egative film place plane orthogonal, described spectroscope place plane and described first egative film place plane;
The light path of the light that the light that described first light source sends sends with described 2nd light source is identical after described spectroscope.
2. means of illumination according to claim 1, wherein, described code film is loose spot egative film or striped egative film.
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| CN108759720A (en) * | 2018-06-07 | 2018-11-06 | 合肥工业大学 | Smooth surface surface type measurement method |
| CN109146934A (en) * | 2018-06-04 | 2019-01-04 | 成都通甲优博科技有限责任公司 | A kind of face three-dimensional rebuilding method and system based on binocular solid and photometric stereo |
| CN110082993A (en) * | 2019-05-16 | 2019-08-02 | 广东烨嘉光电科技股份有限公司 | A kind of optical projection system and its Projection Design method of single channel double patterning |
| CN112930468A (en) * | 2018-11-08 | 2021-06-08 | 成都频泰鼎丰企业管理中心（有限合伙） | Three-dimensional measuring device |
| CN114624949A (en) * | 2022-03-09 | 2022-06-14 | 广州西岛电子科技有限公司 | Light-resistant curtain, equipment and preparation method |
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| CN109146934A (en) * | 2018-06-04 | 2019-01-04 | 成都通甲优博科技有限责任公司 | A kind of face three-dimensional rebuilding method and system based on binocular solid and photometric stereo |
| CN108759720A (en) * | 2018-06-07 | 2018-11-06 | 合肥工业大学 | Smooth surface surface type measurement method |
| CN112930468A (en) * | 2018-11-08 | 2021-06-08 | 成都频泰鼎丰企业管理中心（有限合伙） | Three-dimensional measuring device |
| US11953313B2 (en) | 2018-11-08 | 2024-04-09 | Chengdu Pin Tai Ding Feng Business Administration | Three-dimensional measurement device |
| CN110082993A (en) * | 2019-05-16 | 2019-08-02 | 广东烨嘉光电科技股份有限公司 | A kind of optical projection system and its Projection Design method of single channel double patterning |
| CN114624949A (en) * | 2022-03-09 | 2022-06-14 | 广州西岛电子科技有限公司 | Light-resistant curtain, equipment and preparation method |
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