CN202915911U - Shooting device for distance measurement - Google Patents
Shooting device for distance measurement Download PDFInfo
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- CN202915911U CN202915911U CN 201220538829 CN201220538829U CN202915911U CN 202915911 U CN202915911 U CN 202915911U CN 201220538829 CN201220538829 CN 201220538829 CN 201220538829 U CN201220538829 U CN 201220538829U CN 202915911 U CN202915911 U CN 202915911U
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Abstract
The utility model discloses a shooting device for distance measurement. The shooting device comprises a lighting module, a lens group, a sensor module and an image processing unit, wherein the lighting module comprises at least two luminescent devices in different luminescent colors, light in different colors irradiates a target object from different angles, and light of a same color is sent out in a diffusion manner; the lens group comprises a plurality of lenses, and different lenses shoot the target object from different angles; the sensor module is used for converting signals reflected by the target object into electric signals; and the image processing unit is used for prerecording characteristics of spectra in different positions of a shooting area, receiving an electric signal image of the target object, comparing the spectral characteristics of the electric signal image with the prerecorded spectral characteristics, and analyzing the spatial position of the target object. According to the shooting device for distance measurement, monochromatic light is irradiated to the surface of the target object, so that an image is shot; and distances are calculated by pixel bright spots corresponding to the target object in the image.
Description
Technical field
The utility model relates to the optical ranging field, particularly a kind of filming apparatus for measuring distance.
Background technology
In technical research, commercial Application and the daily use, accurately the demand of the distance of measurement target object is more and more.
These two kinds of methods commonly used realize range finding in the existing optical measuring technique.A kind of is laser range finder, and laser distance measuring principle is by laser instrument Emission Lasers irradiating object, and by the irreflexive laser signal in accepted thing surface, the travel-time of calculating laser is determined the distance of target.This method is the distance that adopts the reciprocal time by calculation medium to converse, because the out-of-shape of target object, to the difference of the absorption reflection of medium, so there are a lot of limitation in the distance that obtains object by the technology to the time.
Another is the method for using infrared ray or visible light structure light.When the pattern of certain light structure projected target object, people can find range according to the deformation that light forms pattern.For example, when a lot of round dots projected on the target object, the density of round dot can be with deciding distance.Round dot is more intensive, and the distance of object is just nearer.
For example, laser range finder can only be measured the distance of point-to-point single target point.Structure light can not or be difficult to measure target object very dark or no reflection events.And the light pattern that projects itself can be upset in the edge of target object, thereby causes makeing mistakes.Owing to only have a kind of light of structure to use, can not measure in this way long distance so make, its working range is restricted.
The utility model content
A purpose of the present utility model is to provide a kind of filming apparatus for range finding, by arranging special light field, the reflective spectral property of evaluating objects object under this light field, thereby the purpose that reaches range finding, locates.
The technical scheme of a kind of filming apparatus for finding range of the utility model is to comprise lighting module, lens group, sensor assembly and graphics processing unit; Described lighting module comprises 2 kinds of luminescent devices with different glow colors at least, and the light of different colours shines target object from different perspectives, and the light of color of the same race penetrates in the mode of diffusion; Described lens group comprises some camera lenses, and different camera lenses are the photographic subjects object from different perspectives; Described sensor assembly is converted to electric signal with the light signal that target object reflects; The pre-recorded spectrum characteristic that the shooting area diverse location is arranged of described graphics processing unit, the electric signal image of receiving target object, and contrast the spectral characteristic of electric signal image and pre-recorded spectrum characteristic, analyze the locus of target object.
The utility model shines the target object surface by each monochromatic light, focuses thereby be convenient to camera, photographs picture rich in detail by a plurality of cameras, uses corresponding algorithm to calculate distance again.Be particularly useful for the large target object of out-of-shape or Area comparison.By taking a sub-picture, each is put corresponding pixel bright spot and calculates relative position by target object in the image itself.Can only survey this restriction in position of a point to solve the each measurement of traditional distance-finding method.The light of color of the same race penetrates in the mode of diffusion, thereby makes illumination cover shooting area, and the exposure intensity that forms diverse location is with the trend that changes with light source distance.
The utility model adopts many camera lenses also to have the function of auxiliary range finding.The irradiation of different colours is beneficial to different objects or with the object different parts and carries out mark, recycles a plurality of camera lenses and takes from different perspectives, finds range.
Preferably, described luminescent device is LED.
LED has the advantages such as the color unicity is good, cost is low, selective color is many, good stability, and the life-span is long.
Preferably, the luminescent device of described different glow colors comprises redness, green and blue luminescent device.
R, G, B three coloured light are each digital domain color treatments schemes commonly used, use the collocation of R, G, B, can be as far as possible compatible with currently marketed electronic processing equipment.
Preferably, the illumination component of described different glow colors is installed in respectively on the different unit modules, and these unit modules are placed on different positions shot object is shone.
The illumination component of different glow colors is installed on the different unit modules, is conducive to the combination configuration.
Preferably, at least one unit module is positioned in the middle of the lens group.
Preferably, described sensor has a plurality of, and all are taken sensor and form a sensor plane; The corresponding a plurality of camera lenses of a described sensor or sensor and camera lens are corresponding one by one.
Camera lens and sensor both can adopt one to one, and mode arranges, can also adopt the corresponding sensor of all camera lenses, the corresponding sensors of a plurality of camera lenses and all the other camera lenses are corresponding sensor separately, and the set-up mode of the corresponding a plurality of sensors of camera lens etc.About the setting of sensor and camera lens, corresponded manner depends on the demand of late time data processing and the demand of sensor setting.The mode of the corresponding a plurality of camera lenses of same sensor wherein is conducive to simplify the processing technology of sensor.
Preferably, all camera lenses are arranged in a camera lens face, and the camera lens face is straight surface, has the cambered surface of radian or the combinatorial surface that is spliced in the mode of certain knuckle by several planes.Thereby make camera lens arrange more compact and reasonable.
Preferably, comprise the rgb signal collector, the captured view data that obtains of sensor is passed to graphics processing unit by the rgb signal collector.
Preferably, the LED of every kind of glow color has some, and this LED arranges that with planar array way described planar array is flat luminous array or the cambered surface light emitting array that is conducive to optically focused.
By using the mode of various arrays, make LED illumination more even, fully satisfy the illumination demand of high-speed moving object as far as possible.
The invention also discloses a kind of distance-finding method, by arranging special light field, the reflective spectral property of evaluating objects object under this light field, thereby the purpose that reaches range finding, locates.
A kind of technical scheme of distance-finding method is to comprise lighting module, lens group, sensor assembly and graphics processing unit; Described lighting module can be launched two or more monochromatic light, and described lens group comprises at least two camera lenses, and described graphics processing unit records the spectrum characteristic of shooting area diverse location under the lighting module irradiation;
The method comprises the steps:
To the target object irradiation, the light of color of the same race penetrates in the mode of diffusion the monochromatic light of step 1, different colours from different perspectives;
The utility model shines the target object surface by each monochromatic light, focuses thereby be convenient to camera, photographs picture rich in detail by a plurality of cameras, uses corresponding algorithm to calculate distance again.Be particularly useful for the large target object of out-of-shape or Area comparison.By taking a sub-picture, each is put corresponding pixel bright spot and calculates relative position by target object in the image itself.Can only survey this restriction in position of a point to solve the each measurement of traditional distance-finding method.The light of color of the same race penetrates in the mode of diffusion, thereby makes illumination cover shooting area, and the exposure intensity that forms diverse location is with the trend that changes with light source distance.
Preferably, the irradiation of different colours is beneficial to different objects or with the object different parts and carries out mark, recycles a plurality of camera lenses and takes from different perspectives, finds range.The utility model adopts many camera lenses to have the function of auxiliary range finding.
Preferably, before described step 1, set up in addition the step of target object reflection characteristic, this step is, target object is positioned at known spatial locations, measure the irradiation luminance brightness of this position, and the measurement target object is in the reflected light brightness of this position, and its brightness contrast relation is the reflection characteristic of target object.
Preferably, described reflection characteristic is used for the received electric signal image of calibration steps three graphics processing units.
Preferably, during the described step of setting up the target object reflection characteristic, target object self is luminance not, and shooting environmental is without luminous environment.
Set up the reflection characteristic of target object in the situation of, ambient black static at target object, this reflection characteristic is more accurate.
Preferably, comprise the deblurring step, this step is that a plurality of camera lenses are taken from different perspectives, process fuzzy image according to the view data of the captured same time point different visual angles that obtains of different camera lenses, perhaps are used for the 3D information of storing sample.
Preferably, described graphics processing unit carries out algorithm with the electric signal image and synthesizes dynamic video.
Preferably, graphics processing unit is analyzed the spectral characteristic of target object institute each pixel of correspondence in the electric signal image, and calculate each pixel the relative position in corresponding space.
By photographic images, each puts the relative position that corresponding pixel bright spot calculates its real space by target object itself in the electric signal image, can only survey this restriction in position of a point to solve the each measurement of traditional distance-finding method.
Preferably, described have at least a kind of monochromatic light to shine to target object from the centre position of lens group.
Preferably, the described monochromatic light that sends comprises ruddiness, green glow and blue light.
R, G, B three coloured light are each digital domain color treatments schemes commonly used, use the collocation of R, G, B, can be as far as possible compatible with currently marketed electronic processing equipment.
Preferably, comprise the rgb signal collector, the electric signal image that photographs sends graphics processing unit to via the rgb signal collector.
Description of drawings
Fig. 1 is the framework connection diagram of the utility model embodiment filming apparatus
Fig. 2 is the one-piece construction synoptic diagram of the utility model embodiment filming apparatus
Fig. 3 is the lens set structure synoptic diagram of the utility model embodiment filming apparatus
Fig. 4 is the led light source module diagram of the utility model embodiment filming apparatus
Fig. 5 is camera lens and the sensor arrangement relation synoptic diagram of the utility model embodiment filming apparatus
Fig. 6 is the schematic diagram of a kind of distance-finding method of the utility model embodiment
Fig. 7 is the schematic diagram of the many camera lens range findings of the utility model embodiment
Embodiment
Below in conjunction with accompanying drawing the utility model specific embodiment is described further:
As depicted in figs. 1 and 2, a kind of filming apparatus for range finding comprises lens group 1, sensor assembly 3, lighting module 2 and graphics processing unit 5.
Described lens group 1 comprises a plurality of camera lenses, and a plurality of camera lens collaborative works can improve the sharpness of image.All pick-up lenss are arranged in a camera lens face, the camera lens face can be straight surface, can also be the cambered surface with radian, can also be the combinatorial surface that is spliced in the mode with certain knuckle by several planes, decides according to the concrete condition of the target object of required shooting.Can also can have a fixed gap by close-packed arrays between the pick-up lens, as long as form a camera lens face.A plurality of camera lenses are fixed into a camera lens face by one-body molded mode or connecting method.
Adopt many camera lenses, because the visual angle of different camera lenses is different, can also find range to the mark of different colors.
In the present embodiment, comprise four camera lenses, the mode that these four camera lenses are square is arranged, i.e. rectangular arranged; Per two camera lenses are fixedly connected with by one-body molded mode or connecting method, and form a camera lens module.As shown in Figure 3, two camera lenses are fixedly connected with by one-body molded mode, are up and down to arrange.
In other embodiments, described pick-up lens can also be two, be up and down to arrange, or three, triangularity is arranged, and more than four.
Described sensor assembly 3 comprises some sensors, and in the present embodiment, the quantity of sensor is consistent with number of shots, between sensor and the camera lens for one to one the relation.All the sensors forms a sensor cover, and the corresponding sensor independently of each camera lens is convenient to sensor data are processed.Sensor commonly used has CCD, CMOS etc. to take sensor.
As shown in Figure 5, be the layout synoptic diagram between camera lens and the sensor, the distance between camera lens and the object is p, is d as the diameter width of camera lens, and the distance between camera lens and the sensor is μ.Image is incident upon on the sensor through behind the camera lens, and this image of sensor record makes it to be converted to the convenient electric signal of processing, the image that obtains taking from light signal.
In other embodiments, camera lens and sensor can not adopt one to one, and mode arranges, such as the corresponding sensor of all camera lenses, the corresponding sensors of a plurality of camera lenses and all the other camera lenses are corresponding sensor separately, and the corresponding a plurality of sensors of camera lens etc.About the setting of sensor and camera lens, corresponded manner depends on the demand of late time data processing and the demand of sensor setting.Wherein the mode of the corresponding a plurality of pick-up lenss of same sensor is conducive to simplify the processing technology of taking sensor.
Described lighting module 2 can be launched two or more monochromatic light, and each monochromatic wavelength is different.In actual applications, usually only having laser is to be close to absolute single wavelength (as select laser instrument, must utilize lens combination to disperse laser beam, laser is radiate from different perspectives); And other illumination components, such as LED, the monochromatic light that sends typically refers to the very little monochromatic light of wavelength coverage, and when selecting this type of illumination component, each monochromatic wavelength coverage can not have overlapping.
Each monochromatic light that lighting module 2 sends is from different perspectives according to shot object.A kind of preferred scheme is, the illumination component of different glow colors is installed in respectively on the different unit modules, and these unit modules are placed on different positions shot object is shone; The from different perspectives outgoing of the monochromatic light of each unit module is to cover a larger irradiation area.And, have at least a unit module to be placed between the lens array, other unit module positions are symmetrical and be arranged in the position on camera group both sides with certain angle.
In the present embodiment, lighting module 2 has used LED as light-emitting component.In recent years, the development of LED (light emitting diode) is very fast, and is daily and commercial Application is more and more universal, so that it has reduced production cost and has improved performance; And the configuration very high, color of the efficient of led light source is a lot, has the controlled property of quick response; Also have green, environmental protection, energy-conservation, characteristics that the life-span is long.
The LED light-emitting component of color of the same race is arranged in an orderly manner and is integrated, and can be to be integrated in the same plane, also can be integrated into the light-emitting area that is conducive to optically focused with radian.
As shown in Figure 4, the LED light-emitting component of color of the same race is integrated on the unit module in the mode of array.
In other embodiments, can also adopt other color, as purple, yellow, blue or green etc.; Can also use the combination of two kinds of colors, such as blue, yellow combination, blue or green, red combination, purple, green combination etc.At present, aspect Digital Image Processing, using more is the combination of R, G, B, and the LED product of R, G, B is also more common, and price is low, and luminous mass is good, so present embodiment selects to adopt the preferred compositions mode of R, G, B.
Because the unit module of variant glow color, that sends only launches in the mode of minute scattered radiation, for example be fan-shaped ejaculation, thereby on its direction of illumination, variation along with distance, the illumination of certain some position changes, and same object is also different in the catoptrical brightness of the position of different distance.Because different luminous unit modules shine from different perspectives, object is in the different light field region of variation, the light that reflects has different spectrum characteristics, record in advance the spectrum characteristic of diverse location, the object of this moment is filmed, analyzes its spectral characteristic, contrast is the spectrum characteristic of record in advance, can calculate the residing locus of object, and then realize the various purposes such as range finding.
The spectrum characteristic of described graphics processing unit 5 pre-recorded diverse locations, and the reflective spectral property of object analysis, contrast is the spectrum characteristic of record in advance, calculates the residing locus of object.
In the present embodiment, also comprise rgb signal collector 4.Under the illumination of led light source, camera lens and sensor are taken and are got access to a sub-picture, then by sensor with the image uploading obtained to rgb signal collector 4, at last view data is submitted to graphics processing unit 5 and carries out data and process.
Described graphics processing unit 5 can also be with the image telecommunications breath that receives in the rgb signal collector 4, and the line algorithm of going forward side by side synthesizes dynamic video, is transferred to outer computer.
Described graphics processing unit 5 also is used for regulating according to external control signal the duty of sensor, camera lens.Because the duty that graphics processing unit 5 is regulated sensor, camera lens according to the control signal of external unit input, institute guarantees that the dynamic video signal of collection and output is accurate so that this device always works in comparatively ideal state.
Shown in Fig. 1 and Fig. 2, being numbered 6 device is switchgear, and 7 is data line.
Present embodiment, focuses thereby be convenient to camera to the target object surface by LED light source irradiation of all kinds, photographs picture rich in detail by a plurality of cameras, uses corresponding algorithm to calculate distance again.Be particularly useful for the large target object of out-of-shape or Area comparison.By taking a sub-picture, calculate relative position by the pixel bright spot of each point of target object in the image itself.Can only survey this restriction in position of a point to solve the each measurement of traditional distance-finding method.
Figure 6 shows that the principle schematic of the utility model specific embodiment distance-finding method:
The position of adjusting LED light source cell module of all kinds according to the general distance of the target object that will carry out range observation.For object 8 or the long-pending less object of visible surface of close together, can take the concentrated area to arrange the mode of light source; For distant object 9 or the long-pending larger object of visible surface, will adopt the mode of arranging dispersedly light source.Which kind of no matter adopts arrange the mode of light source, the final chromatogram pattern that all need to form in each color light source that formation camera in target object surface can capture.
Effects on surface forms the target object of chromatogram pattern and takes pictures, and picture is delivered in the rgb signal collector 4 via sensor.For the sharpness and the stereovision that strengthen picture, a plurality of camera lenses can collaborative work.The shutter of each camera lens moves simultaneously, and the picture that photographs is also delivered in the rgb signal collector 4 via sensor.
Image in the rgb signal collector 4 is sent in the graphics processing unit 5 processes, according to the chromatogram pattern in the picture that obtains, calculate the positional distance of target object each point by algorithm.
The surface of target object need be half reflection, and natural most of objects all are this character, for example, and metal, clothes, wood, plastics, building materials etc.
To sum up, the distance-finding method of present embodiment comprises the steps:
To the target object irradiation, each monochromatic light is fan-shaped photograph to target object to the monochromatic light of step 1, different colours from different perspectives.
Before described step 1, set up in addition the step of target object reflection characteristic, this step is that target object is positioned at known spatial locations, measures the irradiation luminance brightness of this position, and the measurement target object is in the reflected light brightness of this position, and its brightness contrast relation is the reflection characteristic of target object.Described reflection characteristic is used for the received electric signal image of calibration steps three graphics processing units.
When setting up the step of target object reflection characteristic, target object self is luminance not, and shooting environmental is without luminous environment.Set up the reflection characteristic of target object in the situation of, ambient black static at target object, this reflection characteristic is more accurate.
The present embodiment distance-finding method also comprises the deblurring step, this step is, a plurality of camera lenses are taken from different perspectives, process fuzzy image according to the view data of different camera lenses and the captured same time point different visual angles that obtains of sensor, perhaps are used for the 3D information of storing sample.
By photographic images, each puts the relative position that corresponding pixel bright spot calculates its real space by target object itself in the electric signal image, can only survey this restriction in position of a point to solve the each measurement of traditional distance-finding method.
Described have at least a kind of monochromatic light to shine to target object from the centre position of lens group.
The described monochromatic light that sends comprises ruddiness, green glow and blue light.R, G, B three coloured light are each digital domain color treatments schemes commonly used, use the collocation of R, G, B, can be as far as possible compatible with currently marketed electronic processing equipment.
Adopt many camera lenses, because the visual angle of different camera lenses is different, can also find range to the mark of different colors.
Fig. 6 is the lens arrangement synoptic diagram that utilizes LED lighting module 2 and camera lens distance-finding method; It has illustrated that the light chromatogram on the target object also can change thereupon when the distance change.This light chromatogram has two kinds of purposes: one is the distance of spotting object, and another purposes is the identification point that can capture as camera, so that carry out relief range observation.For the first purposes, the chromatogram pattern of color can project the space, and before really finding range, this colored chromatogram can be by standardization out.Just as shown in Figure 6, in-plant target object 8 has the R(redness from the top to the bottom), G(is green), B(is blue) arrangement of three kinds of colors; At a distance target object 9 has the B(blueness from the top to the bottom), G(is green), R(is red) arrangement of three kinds of colors.For the second purposes, the chromatogram pattern of multiple color can be used for stereoscopic rangefinding.Use more color spectrum patterns, range finding will be more accurate.As a rule, the use of the spectrum pattern of color is hard-core.Above-mentioned chromatogram pattern is embodied as spectrum characteristic, spectral characteristic, the curve of spectrum etc.
Utilized two camera lenses or many camera lenses to obtain the principle of the distance B between target and camera lens, two camera lenses (S1 and S2) are example as shown in Figure 7, and target is shone into the colors such as C0, C1, C2, C3 by LED.The Neutral colour of impact point O1 illuminated one-tenth color C1 and C2, the center of two camera lenses and impact point O1 form an arbitrarily triangle, and the distance L of two optical centers is known, and two angle a, b can obtain by measuring, then can calculate leg-of-mutton all the other both sides, namely distance B 1 can be calculated.For impact point O2, the Neutral colour of illuminated C4 and C5 then, two angle c, d can easily obtain by measuring, and what distance B 2 also can be same calculates.
The according to the above description announcement of book and instruction, the utility model those skilled in the art can also change and revise above-mentioned embodiment.Therefore, the embodiment that discloses and describe above the utility model is not limited to also should fall in the protection domain of claim of the present utility model modifications and changes more of the present utility model.
Claims (9)
1. a filming apparatus that is used for range finding is characterized in that: comprise lighting module, lens group, sensor assembly and graphics processing unit;
Described lighting module comprises 2 kinds of luminescent devices with different glow colors at least, and the light of different colours shines target object from different perspectives, and the light of color of the same race penetrates in the mode of diffusion;
Described lens group comprises some camera lenses, and different camera lenses are the photographic subjects object from different perspectives; Described sensor assembly is converted to electric signal with the light signal that target object reflects;
The pre-recorded spectrum characteristic that the shooting area diverse location is arranged of described graphics processing unit, the electric signal image of receiving target object, and contrast the spectral characteristic of electric signal image and pre-recorded spectrum characteristic, analyze the locus of target object.
2. according to filming apparatus claimed in claim 1, it is characterized in that: the luminescent device of described different glow colors comprises redness, green and blue luminescent device.
3. according to filming apparatus claimed in claim 1, it is characterized in that: the illumination component of described different glow colors is installed in respectively on the different unit modules, and these unit modules are placed on different positions shot object is shone.
4. according to filming apparatus claimed in claim 3, it is characterized in that: at least one unit module is positioned in the middle of the lens group.
5. according to filming apparatus claimed in claim 1, it is characterized in that: described sensor has a plurality of, and all are taken sensor and form a sensor plane; The corresponding a plurality of camera lenses of a described sensor or sensor and camera lens are corresponding one by one.
6. according to filming apparatus claimed in claim 1, it is characterized in that: all camera lenses are arranged in a camera lens face, and the camera lens face is straight surface, has the cambered surface of radian or the combinatorial surface that is spliced in the mode of certain knuckle by several planes.
7. according to filming apparatus claimed in claim 1, it is characterized in that: comprise the rgb signal collector, the captured view data that obtains of sensor is passed to graphics processing unit by the rgb signal collector.
8. according to filming apparatus claimed in claim 1, it is characterized in that: described luminescent device is LED.
9. according to filming apparatus claimed in claim 8, it is characterized in that: the LED of every kind of glow color has some, and this LED arranges that with planar array way described planar array is flat luminous array or the cambered surface light emitting array that is conducive to optically focused.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 201220538829 CN202915911U (en) | 2012-10-19 | 2012-10-19 | Shooting device for distance measurement |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 201220538829 CN202915911U (en) | 2012-10-19 | 2012-10-19 | Shooting device for distance measurement |
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| CN202915911U true CN202915911U (en) | 2013-05-01 |
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| CN 201220538829 Withdrawn - After Issue CN202915911U (en) | 2012-10-19 | 2012-10-19 | Shooting device for distance measurement |
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Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102865849A (en) * | 2012-10-19 | 2013-01-09 | 广州市盛光微电子有限公司 | Camera device for ranging and ranging method |
| CN105841675A (en) * | 2016-05-03 | 2016-08-10 | 北京光年无限科技有限公司 | Range finding method and system for intelligent robot |
| CN111191623A (en) * | 2020-01-03 | 2020-05-22 | 圣点世纪科技股份有限公司 | Finger vein shooting distance determination method |
| CN111955054A (en) * | 2018-04-04 | 2020-11-17 | 扎克特拉克有限责任公司 | Lighting system |
| CN112839217A (en) * | 2019-11-22 | 2021-05-25 | 深圳市光鉴科技有限公司 | 4D camera device and electronic equipment |
-
2012
- 2012-10-19 CN CN 201220538829 patent/CN202915911U/en not_active Withdrawn - After Issue
Cited By (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102865849A (en) * | 2012-10-19 | 2013-01-09 | 广州市盛光微电子有限公司 | Camera device for ranging and ranging method |
| CN102865849B (en) * | 2012-10-19 | 2015-04-08 | 广州市盛光微电子有限公司 | Camera device for ranging and ranging method |
| CN105841675A (en) * | 2016-05-03 | 2016-08-10 | 北京光年无限科技有限公司 | Range finding method and system for intelligent robot |
| CN111955054A (en) * | 2018-04-04 | 2020-11-17 | 扎克特拉克有限责任公司 | Lighting system |
| CN111955054B (en) * | 2018-04-04 | 2023-06-20 | 扎克特拉克有限责任公司 | Lighting system |
| CN112839217A (en) * | 2019-11-22 | 2021-05-25 | 深圳市光鉴科技有限公司 | 4D camera device and electronic equipment |
| CN111191623A (en) * | 2020-01-03 | 2020-05-22 | 圣点世纪科技股份有限公司 | Finger vein shooting distance determination method |
| CN111191623B (en) * | 2020-01-03 | 2023-09-19 | 圣点世纪科技股份有限公司 | Method for determining finger vein shooting distance |
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