CN101631194A - Image pickup - Google Patents
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- CN101631194A CN101631194A CN200910145890A CN200910145890A CN101631194A CN 101631194 A CN101631194 A CN 101631194A CN 200910145890 A CN200910145890 A CN 200910145890A CN 200910145890 A CN200910145890 A CN 200910145890A CN 101631194 A CN101631194 A CN 101631194A
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Abstract
An image pickup including a light emission portion (20) that irradiates an object with near infrared; and an image pickup portion (10) that receives a reflection light image of the object by the near infrared. The image pickup portion includes a lens array containing a substrate on which multiple lenses to respectively receive the reflection light image of the object by the near infrared are arranged; a light shield spacer that shields beams of light that have passed through the lens array from each other; a color filter separated into areas according to beams of light that pass through the light shield spacer, each of which transmits only particular beams of near infrared depending on the wavelengths thereof; and an image pickup element that simultaneously obtains multiple images of the object which are formed of each of the particular beams of near infrared having independent wavelengths that have passed through each of the areas of the color filter.
Description
Technical field
The present invention relates to camera head, in more detail, relate to the camera head of the driving condition that is used for for example detecting the driver.
Background technology
In recent years, as supporting control loop, grope to detect often the driving condition that monitors the driver.Generally, in order to detect driver's state, can adopt video camera (following brief note is " the built-in camera head of indoor reflective mirror ") by the indoor reflective mirror of interior plant, the method that driver's face image is made a video recording, need the very wide illumination change from the night to the daytime relatively, can stably make a video recording driver's face image.
In non-patent literature 1, put down in writing the built-in camera head of a kind of indoor reflective mirror, it adopts near-infrared pulsed light projective techniques, so that can stably make a video recording to driver's face image during to the high illumination on daytime during from the low-light (level) at night.In the built-in camera head of this indoor reflective mirror, image pickup part of the illuminating part of the LED of built-in assortment wavelength 850nm, CCD camera etc. in indoor reflective mirror, with the near infrared light of wavelength 850nm irradiation object thing (driver) pulsedly, only open the shutter of CCD camera during this period, accept reverberation picture from object.The function as Back mirror of indoor reflective mirror is not harmed in driver's shooting, and be not radiated on the driver with not losing near infrared light, accept its reverberation picture with the CCD camera, therefore, carry out by near infrared ray band pass filter reflective mirror, this near infrared ray band pass filter reflective mirror makes near infrared light see through, and reflection is looked for the driver and recognized necessary visible light.By the built-in camera head of this indoor reflective mirror, obtain stable photographed images by near-infrared luminous energy.
On the other hand, the state of the driver in detect to monitor driving mainly is to doze off to wait consciousness low, careless see toward the next door etc.In above-mentioned non-patent literature 1, record is made a video recording to driver's face image with the built-in camera head of indoor reflective mirror, from this eye zone, face image detection face zone, then, detect nictation and direction of visual lines, the time of closing one's eyes change-detection according to nictation is realized low status level, according to face towards and the eyeball direction detect and whether carelessly to see toward the next door.
Like this, in order to detect driver's driving condition, need require above-mentioned location-specific high speed, high precision int from the driver's of camera head shooting eye zone, face image detection face zone.For example, when configuration manikin occasion, wish to reach the high accuracyization of not judging for the people such as face.Although the built-in camera head of indoor reflective mirror of record can stably be made a video recording to driver's face image for the very big illumination change from the night to the daytime in the above-mentioned non-patent literature 1, but because it is the method for near infrared light of utilizing the single wavelength of wavelength 850nm, therefore, for the specific high precision int of driver's face location, there is limit.
To this, in non-patent literature 2, the near infrared ray multiband camera head of wavelength as the near infrared light of 870nm and two kinds of wavelength of 970nm used in record.In this near infrared ray multiband camera head, the near infrared light sequential illumination of the near infrared light of wavelength 870nm and wavelength 970nm on the driver, is obtained 870nm and two irradiations of 970nm image by the CCD camera.Then, two irradiation images for obtaining by obtaining the difference of brightness value, detect pars muscularis and hair portion, according to two kinds of materials of symbol difference of this difference value.The light in visual light belt territory is removed by optical filter, can obtain stable image.
Near infrared ray multiband camera head according to record in non-patent literature 2, the high precision int of specific people face may, but owing near infrared light sequential illumination with wavelength 870nm and wavelength 970nm, therefore, need in lighting a lamp, order obtain, and synchronous shooting etc., there are problems such as miscellaneous property, real-time.
[patent documentation 1] spy opens flat 10-335758 communique
[patent documentation 2] spy opens the 2007-41555 communique
Work is newly waited in [non-patent literature 1] Yamamoto, " vehicle mounted transducer/camera technology complete or collected works ", technical information association, on October 31st, 2005, the 1st joint and the 2nd joint
Work such as [non-patent literature 2] rugged refined health in river, " force-feeling sensor's of near infrared ray multiband exploitation " (softpier JAPAN joint research report), (wealth) softpier JAPAN IT research center, VOL.11 (2007), P6-1～6-24
Summary of the invention
The objective of the invention is to, solve the camera head that also can detect the driving condition that monitors the driver when above-mentioned problem is travelled often even provide.
To achieve these goals, the present invention proposes following technical scheme:
(1) a kind of camera head comprises:
Illuminating part is radiated near infrared light on the subject;
Image pickup part is accepted the reverberation picture of above-mentioned near infrared light in subject; It is characterized in that:
Above-mentioned image pickup part comprises:
Lens arra, a plurality of lens are accepted the reverberation picture of described near infrared light in subject respectively, are provided with described a plurality of lens on same substrate;
Shading is covered each light beam by the said lens array mutually at interval;
Colour filter according to by above-mentioned shading each beam separation zone at interval, in each zone, only makes the light beam of different specific near infrared lights pass through;
Imaging apparatus is obtained form, a plurality of shot object images of each light beam of the specific near infrared light that has nothing in common with each other in each zone by above-mentioned colour filter simultaneously.
(2) in the camera head of above-mentioned (1) record, it is characterized in that:
Above-mentioned colour filter is in rectangular coordinate system, be will at least two kinds on a substrate parallel with the XY face transparent material along the multilayer structure making of Z direction alternative stacked, each layer has along the concaveconvex shape in direction monobasic cycle repeatedly in the XY face of setting in each zone, and above-mentioned light beam incides above-mentioned XY face.
(3) in the camera head of above-mentioned (1) record, it is characterized in that:
Above-mentioned colour filter has groove structure or the trellis with the some cycles assortment on substrate.
(4) in the camera head of above-mentioned (1) record, it is characterized in that:
Above-mentioned imaging apparatus carries on the imaging apparatus frame, and the interval of rectangle frame is set on above-mentioned imaging apparatus frame, carries above-mentioned colour filter on above-mentioned interval, by above-mentioned interval, colour filter, and imaging apparatus frame, airtight above-mentioned imaging apparatus.
The following describes effect of the present invention.
According to camera head of the present invention, can obtain the image of at least two wavelength in near-infrared band territory simultaneously, improve real-time.Again, obtain the difference of brightness value, can differentiate people's pars muscularis according to this difference from resulting two images, therefore, the face position of the driver in the inspection vehicle etc. accurately is according to resulting information, sight line and face direction etc. are detected in specific face position, can impel its attention rapidly to the driver.
Again,, only, the colour filter that sees through wavelength arbitrarily can be made, therefore, the colour filter of Region Segmentation type can be made accurately by changing the groove structure that forms colour filter according to color filter structure of the present invention.
Have again,, can prevent that the camera watch region of imaging apparatus from adhering to foreign matters such as rubbish according to image pickup part structure of the present invention.
Description of drawings
Fig. 1 is the pie graph that the integral body of the camera head that relates to of expression first example of the present invention constitutes.
Fig. 2 is expression people's the flesh and the performance plot of the reflection characteristic in the near-infrared territory of the portion of sending out.
Fig. 3 is the figure of LED assortment one example of expression illuminating part.
Fig. 4 is the performance plot of the transmittance/reflectance characteristic of expression near-infrared band pass filter.
Fig. 5 is the exploded perspective view of formation of image pickup part of the camera head of expression first example.
Fig. 6 is the sectional view of formation of image pickup part of the camera head of expression first example.
Fig. 7 represents another example that lens arra constitutes.
Fig. 8 represents lens arra manufacture method one example.
Fig. 9 represents color filter structure one example.
Figure 10 represents to be suitable for colour filter one example of Fig. 9.
Figure 11 represents another example of color filter structure.
Figure 12 represents shading manufacture method one example at interval.
Figure 13 is the exploded perspective view of formation of image pickup part of the camera head of expression the present invention second example.
Embodiment
Other purpose and feature of the present invention, the explanation according to the example hereinafter of reference accompanying drawing will become clear and definite.
Describe an example of the present invention with reference to the accompanying drawings in detail.In the following stated example, therefore technical owing to be preferred embodiment of the present invention to inscape, kind, combination, shape is installed relatively to wait and has been done various qualifications, but these only exemplify, and the present invention is not limited thereto.
In the following stated example, identical with non-patent literature 2, use the near infrared light of wavelength, but the present invention is not limited thereto as 870nm and two kinds of wavelength of 970nm, using wavelength also can be more than two kinds.Generally, many more more can high Precision Processing.
Fig. 1 is the pie graph that the integral body of the camera head that relates to of expression first example of the present invention constitutes.In Fig. 1, symbol 10 is the image pickup parts to CCD camera of making a video recording as the driver's 1 of shot object image face image etc., 20 are to use infrared LED near infrared light to be radiated at driver 1 illuminating part, ensconce in the indoor reflective mirror 50 of cars in above-mentioned image pickup part 10 and the illuminating part 20, driver behavior etc. is not made a video recording to driver 1 face image with exerting an influence so that can be.In indoor reflective mirror 50 fronts, be provided with near infrared light band pass filter 30, the near infrared light of irradiation sees through, look the visible light reflection of recognizing necessity for driver 1, so that the function of taking pictures after the conduct of indoor reflective mirror 50 is not harmed in the shooting to the driver, and do not lose illumination near infrared light be radiated on the driver 1, can accept reverberation at image pickup part 10.Fig. 1 omits diagram, is used for the shutter speed and the gain controlling of the camera of image pickup part 10, and the control part of the fluorescent lifetime of the infrared LED of control illuminating part 20 is also interior ensconces in the indoor reflective mirror 50.
Illuminating part 20 is launched near infrared light pulsedly with synchronous by the camera time of the camera that does not have illustrated control part to set.The face that this near infrared light shines driver 1 pulsedly by near infrared ray band pass filter 30, its reverberation is by same band pass filter 30, is subjected to light at the image pickup part 10 of CCD camera etc.
At image pickup part 10, lens arra by many modes, after the near infrared light that is subjected to light is separated into two light beams, make each light beam pass through colour filter, described colour filter is separated into the zones of different through wavelength 870nm and 970nm, be input to imaging apparatuss such as CCD, obtain two shot object images (driver's face image) of the reflection characteristic of different two wavelength of 870nm and 970nm simultaneously.Concrete configuration example about this image pickup part 10 is described further below.
Concerning the people, cannot see, but the near-infrared tape territory that can detect sensing concerning the CCD camera generally is made as 770nm～1000nm.Such as non-patent literature 2 the record, this near-infrared tape territory light in the reflection characteristic of people's face as shown in Figure 2, it is that people are known.Identical with non-patent literature 2, in this near-infrared tape territory, selected 870nm and 970nm two wavelength obtain two irradiation images, if the comparison brightness value, the reflection characteristic of pars muscularis and hair has towards the bottom right and towards upper right opposite characteristic as can be known.Therefore, get the difference occasion of respectively shining image, its difference value symbol difference can be distinguished pars muscularis and hair.Like this, such as non-patent literature 2 record, can detect pars muscularis and hair according to the difference of the irradiation image of 870nm and 970nm, according to the symbol of this difference value, can distinguish pars muscularis and hair.
Behind the specific pars muscularis, such as non-patent literature 1 record, go out face zone eye zone from this face image detection, then, detect nictation and direction of visual lines.Then, realize low status level according to the time of the closing one's eyes change-detection of nictation, according to face towards and the eyeball direction detect and whether carelessly to see toward the next door.Like this, according to resulting information, can remind to the driver and impel its attention.
According to the camera head of this example, two images of the reflection characteristic of different two wavelength of 870nm by obtaining near-infrared tape territory simultaneously and 970nm are compared with non-patent literature 2, can improve real-time.Again, get the brightness value difference, can distinguish people's pars muscularis and hair, therefore, compare, can detect driver's face position accurately with non-patent literature 1 from resulting two images.Method for imaging adopts near infrared ray pulsed light projective techniques, and is therefore identical with non-patent literature 1, can obtain stable photographed images during to the high illumination on daytime during from the low-light (level) at night.Have, therefore the indoor reflective mirror of interior plant car, can not influence driver behavior ground the driver is made a video recording again.
Below, the configuration example about the each several part of the camera head of this example describes in detail with its effect, effect.
Fig. 3 represents LED assortment one example of illuminating part.In this figure institute example, a plurality of infrared LEDs of illuminating part 20 assortments, LED is configured in image pickup part 10 peripheries, the lightness homogeneous of the driver's of feasible shooting image.Fig. 3 (a) expression homogeneous disposes the example of a plurality of infrared LEDs 21, and these infrared LED 21 output wavelengths are roughly the near infrared light in 800～1000nm band territory.The example of infrared LED 22,23 is used in Fig. 3 (b) expression, the single wavelength of described infrared LED 22 output 970nm, the single wavelength of described infrared LED 23 output 870nm.This occasion, LED has directionality, for understanding the inhomogeneity of delustring, for example, and with identical shown in the non-patent literature 2, LED22,23 collocation forms that are made as are as shown in Figure 3 arranged.Also can further dispose diffuser plate in the direction of illumination side of LED.Each output 800～1000nm that drives Fig. 3 (a) simultaneously that fixes time is with the near infrared infrared LED group in territory, or the infrared LED group of the single wavelength of the output 870nm of Fig. 3 (b) and 970nm, by near-infrared band pass filter 30, shine driver's face pulsedly, only the reverberation during this is subjected to light at image pickup part 10.As described later, separate these reverberation pictures,, can obtain two images of reflection characteristic of difference two wavelength of 870nm and 970nm simultaneously by color filter at image pickup part 10.
Fig. 4 is the performance plot of the transmittance/reflectance characteristic of expression near-infrared band pass filter.Near-infrared band pass filter 30 need only make that the near infrared light of LED sees through, and makes to recognize necessary visible light and outer parasitic reflection for looking of driver, uses the filter of reflectance/transmittance characteristic as shown in figure 3.Such band pass filter is by optical crystal described later or commplementary wave length structure (sub-wavelengthstructure), or the different multi-layer film structure of refractive index, is easy to obtain.
Fig. 5 is the exploded perspective view of formation of image pickup part of the camera head of expression first example.Fig. 6 is the sectional view of formation of image pickup part of the camera head of expression first example.Image pickup part 10 adopts the compound eye of a relative imaging apparatus with a plurality of lens (is two lens at this) photography.This compound eye has the advantage that can make the device slimming.
In Fig. 5, two lens 11a, 11b are mutual independently identical shaped einzel lenses, and configuration constitutes lens arra 11 at grade.The normal parallel on each optical axis 1a, the 1b of two lens 11a, 11b and the above-mentioned plane of configuration two lens 11a, 11b.As einzel lens 11a, 11b, can use for example non-spherical lens etc.
At this, as shown in Figure 5, the direction parallel with optical axis 1a, 1b is made as the Z axle, a direction vertical with the Z axle is made as X-axis, and the direction vertical with Z axle and X-axis is made as Y- axis.Lens 11a, 11b are being configured on the XY plane on the grid point that is formed by straight line parallel with X-axis and the straight line parallel with Y-axis.
Relatively shading at interval 12, with the opposition side of subject, configuration forms the colour filter 13 of colour filter zone 13a, 13b. Colour filter zone 13a, 13b by the position of optical axis 1a, 1b, are set to the plane parallel with XY respectively.Described colour filter is the element that only sees through special wavelength light.At this, colour filter zone 13a is made as the near infrared light through 870nm, and colour filter zone 13b is made as the near infrared light through 970nm.
As shown in Figure 6, rectangular box-like interval 14 is set on imaging apparatus frame 15, on this interval 14, carries colour filter 13.Camera watch region 16a, the 16b of solid-state imager 16 by at interval 14, colour filter 13, and imaging apparatus frame 15 airtight, do not make it adhere to foreign matters such as rubbish.
As mentioned above, in the image pickup part 10 of this example, on two optical axis 1a, 1b, constitute two image units that comprise einzel lens, colour filter respectively, reach camera watch region.As described later the different wave length image is made a video recording with each image unit.
The near infrared light of the near-infrared band pass filter 30 by Fig. 1 incides each lens 11a, 11b of lens 11, converge respectively decide light beam.After each light beam of scioptics 11a, 11b is separated fully by shading interval 12, incide each colour filter zone 13a, 13b of colour filter 13.At this, at colour filter zone 13a, only see through the near infrared light of wavelength 870nm, at colour filter zone 13b, only see through the near infrared light of wavelength 970nm.The light beam that sees through the colour filter zone 13a of colour filter 13 is subjected to light by the camera watch region 16a of solid-state imager 16, and the light beam that sees through the colour filter zone 13b of colour filter 13 is subjected to light by the camera watch region 16b of solid-state imager 16.That is, obtain two shot object images (driver's face image) of reflection characteristic of difference two wavelength of 870nm and 970nm simultaneously at solid-state imager 16.
In Fig. 5 and Fig. 6, lens 11 constitute with the einzel lens array, but also can as Fig. 7 (a) a plurality of lens arras 111 be passed through 112 laminations such as grade at interval.By accelerating, can make each lens shape oversimplify, the result makes easily.Shown in Fig. 7 (b), also can change each lens shape again.For example, according to wavelength, therefore the incident light quantity difference, also can change lens openings, adjusts aperture.
Fig. 8 represents lens arra manufacture method one example.
The circumfluence method of Fig. 8 (a) is after making columned photoresist pattern by photoetch method, and glass substrate makes resist flow, and relies on surface tension to make the method for lens shape.Ion diffusion shown in Fig. 8 (b) is to make Tl
+Diffusion of plasma is brought the method for stepped variations in refractive index at the glass substrate that forms the mask consistent with lens shape.Ink-jet method shown in Fig. 8 (c) is to utilize ink jet-print head to make to rely on surface tension to make the method for lens shape by the micro-resin material institute's allocation that drips.
Fig. 8 (a), (b), (c) shown in method utilize surface tension or by the spontaneous shape of ions diffusion and refraction index profile as lens.Fig. 8 (d) is a method of utilizing progressive series of greys mask (gray scale mask).In the method, according to distributing for the transmissivity with progressive series of greys mask, the shape of control resist is compared with additive method, can make various shapes, in lens manufacturing technology from now on, will be more and more important.
In circumfluence method shown in Figure 8 and progressive series of greys mask means, expression is made lens shape with photoresist, but, usually, the lens of making of photoresist exist a little less than transmissivity deficiency or the moisture resistance or problem such as a little less than the fast light irradiation, therefore, carving operation by anisotropic dry is used after the photoresist pattern transfer is to the baseplate material.But, carve in the operation at anisotropic dry, big variation takes place in the shape after photoresist shape and dried the quarter sometimes, and it is very difficult to make the little lens of relative target shape error.Again, this change of shape because of dried engraving device kind, do the condition at quarter, the baseplate material kind changes.Especially, limited by the substrate kind as the transmissivity of important parameter and wave-length coverage, refractive index when estimating lens, therefore, making various relatively baseplate materials, to have lens of high form accuracy very important.
Also can use to be generally used for the grinding that lens are made, or make the mechanography that metal pattern is enclosed resin material again.
Below, colour filter is described.Fig. 9 represents the skeleton diagram of the colour filter that is made of optical crystal.That is, on the transparent material substrate 131 that forms the such periodic slots row of Fig. 9, while preserve the medium 132 of the transparent high index of refraction of interface shape crossing stack and the medium 133 of low-refraction.Each layer has periodically along directions X, still, along the Y direction, both can homogeneous, also can have length cycle or the aperiodic structure bigger than directions X.This fine periodic structure (optical crystal) is documented in the mode from concavo-convex stack technology of being called as of patent documentation 1 grade for example by use, can reproducibility good and high homogeneity ground make.
Figure 10 is the summary outside drawing that has through the colour filter in the zone of wavelength two kinds.The structure of colour filter 13 itself is made of structure shown in Figure 9, in rectangular coordinate system XYZ, on a substrate parallel with the XY face, makes that at least two kinds of transparent materials obtain multilayer structure making along the Z-direction alternative stacked, for example Ta
2O
5And SiO
2Alternate multi-layered film.Colour filter 13 in this example, is divided into two regional 13a, 13b in the XY face, have concaveconvex shape at each each film of zone, this concaveconvex shape in every zone in the XY face direction cycle be concatenated to form.
Relative this optical crystal filter one side's interarea, the light of vertical incidence two wavelength (comprising wavelength X 1, the flashlight of λ 2, λ 1＜λ 2), the flashlight that then has a specific wavelength penetrates alternatively from the opposing party's of optical crystal interarea.
The aperture area of above-mentioned colour filter and the axis of homology in the size and the direction of the groove pattern of substrate processing, can freely design at first.Forming this groove pattern can carry out with variety of processes such as electron beam photoetching process or photoetching process, interference exposure method, nano printings.Regardless of which kind of occasion, can both determine the direction of groove accurately to each small field.Therefore, can form the color filter regions of the different small colour filter of the assembling axis of homology, and the colour filter that makes its a plurality of arrangements.Again, the colour filter action is carried out in the specific region that only has relief pattern, and therefore, if make its neighboring area be smooth or be isotropic relief pattern in face, then as the medium of no polarized lightwave interdependence, light carries out transmission.Therefore, can only make colour filter in the specific region.
The following describes shading at interval.Figure 12 represents shading manufacture method one example at interval.Shown in Figure 12 (a), coating in the part 123 of desire formation shading wall, by the stamp figure, is removed coating 122 to the coating 122 of ultraviolet shading on the outer surface of the photosensitive glass 121 that contains silver.Behind this photosensitive glass 121 of ultraviolet irradiation, remove coating 122, shown in Figure 12 (b), in the photosensitive glass 121, separate out silver in the part of ultraviolet direct irradiation, melanism forms shading wall 124.Shading wall 124 also is formed on the inside of glass 121.At last, shown in Figure 12 (c), by machining or etching, impose and remove processing on glass 121, formation comprises and colour filter zone 13a, the shading interval 12 of regional 12a, the 12b of 13b correspondence.
By the such method of Figure 12, can make shading interval 12 at an easy rate.Be easy to prevent that light from escaping to the zone of adjacency again.Thus, share, can obtain at the small image pickup part of XY face inside dimension with the lens arra that disposes a plurality of lens at grade.
Camera head of the present invention is not limited to constitute lens arra by two lens, constitutes camera head by this array, colour filter two zones, also can be made of at least two zones respectively.For example, in Figure 13, can constitute by four zones.
Figure 13 is the exploded perspective view that the summary of image pickup part of the camera head of expression the present invention second example constitutes.In Figure 13, two lens 11a, 11b are the mutual independently einzel lenses of same shape, and configuration constitutes lens arra 11 at grade.Again, two lens 11c, 11d are the einzel lenses of same shape, and with 11a, 11b forms at grade, is and 11a the 11b difformity.Four lens 11a, 11b, 11c, each optical axis 1a of 11d, 1b, 1c, four lens 11a of 1d and configuration, 11b, 11c, the normal parallel on the plane of 11d.At this, in this example, form each lens, make lens 11a, 11b for example in car, mainly obtain driver's image, lens 11c, 11d for example mainly obtain the codriver's seat image in car.
At this, as shown in figure 13, will with optical axis 1a, 1b, 1c, the parallel direction of 1d is made as the Z axle, a direction vertical with the Z axle is made as X-axis, the direction vertical with Z axle and X-axis is made as Y- axis.Lens 11a, 11b, 11c, 11d is being configured on the XY plane on the grid point that is formed by straight line parallel with X-axis and the straight line parallel with Y-axis.
The shading interval 12 relatively, at the opposition side of subject, and configuration colour filter 13, described colour filter 13 forms colour filters zone 13a, 13b, 13c, 13d. Colour filter zone 13a, 13b, 13c, 13d is passing through optical axis 1a respectively, 1b, 1c, the position of 1d is set to the plane parallel with XY.So-called colour filter is the element that only sees through the light of specific wavelength.
At this, colour filter zone 13a, 13c see through the near infrared light of 870nm, colour filter zone 13b, and 13d sees through the near infrared light of 970nm.
Above as the use-case that makes of camera head of the present invention, ensconce the formation that indoor reflective mirror is photographed to driver and crew in illustrating, but, the present invention is not limited to the description in the foregoing description, can also can share configuration with ensconcing in the guidance panel in the camera with rising display (head up display).
Again, camera head of the present invention is not limited to vehicle-mounted purposes, also can be used for purposes such as FA (factory automation) or health-care medical.
Claims (4)
1. camera head comprises:
Illuminating part is radiated near infrared light on the subject;
Image pickup part is accepted the reverberation picture of above-mentioned near infrared light in subject; It is characterized in that:
Above-mentioned image pickup part comprises:
Lens arra, a plurality of lens are accepted the reverberation picture of described near infrared light in subject respectively, are provided with described a plurality of lens on same substrate;
Shading is covered each light beam by the said lens array mutually at interval;
Colour filter according to by above-mentioned shading each beam separation zone at interval, in each zone, only makes the light beam of different specific near infrared lights pass through;
Imaging apparatus is obtained form, a plurality of shot object images of each light beam of the specific near infrared light that has nothing in common with each other in each zone by above-mentioned colour filter simultaneously.
2. according to the camera head of record in the claim 1, it is characterized in that:
Above-mentioned colour filter is in rectangular coordinate system, be will at least two kinds on a substrate parallel with the XY face transparent material along the multilayer structure making of Z direction alternative stacked, each layer has along the concaveconvex shape in direction monobasic cycle repeatedly in the XY face of setting in each zone, and above-mentioned light beam incides above-mentioned XY face.
3. according to the camera head of record in the claim 1, it is characterized in that:
Above-mentioned colour filter has groove structure or the trellis with the some cycles assortment on substrate.
4. according to the camera head of record in the claim 1, it is characterized in that:
Above-mentioned imaging apparatus carries on the imaging apparatus frame, and the interval of rectangle frame is set on above-mentioned imaging apparatus frame, carries above-mentioned colour filter on above-mentioned interval, by above-mentioned interval, colour filter, and imaging apparatus frame, airtight above-mentioned imaging apparatus.
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP2008159051 | 2008-06-18 | ||
| JP159051/08 | 2008-06-18 | ||
| JP013235/09 | 2009-01-23 |
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| CN101631194A true CN101631194A (en) | 2010-01-20 |
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| CN200910145890A Pending CN101631194A (en) | 2008-06-18 | 2009-06-17 | Image pickup |
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| CN103312950A (en) * | 2012-03-09 | 2013-09-18 | 株式会社理光 | Imaging device |
| CN103733109A (en) * | 2011-08-11 | 2014-04-16 | 日立麦克赛尔株式会社 | Infrared lens unit, imaging module, and imaging device |
| CN103782586A (en) * | 2011-08-24 | 2014-05-07 | 富士胶片株式会社 | Imaging device |
| CN108596145A (en) * | 2018-05-09 | 2018-09-28 | 深圳阜时科技有限公司 | Pattern projecting device, image acquiring device, face identification device and electronic equipment |
| WO2019025685A1 (en) * | 2017-08-04 | 2019-02-07 | Tematys | Functionalised light filter for an swir or vis-swir detector, and uses |
| CN110955098A (en) * | 2020-02-25 | 2020-04-03 | 杭州美迪凯光电科技股份有限公司 | Camera switching module and manufacturing method thereof |
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- 2009-06-17 CN CN200910145890A patent/CN101631194A/en active Pending
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| CN103733109A (en) * | 2011-08-11 | 2014-04-16 | 日立麦克赛尔株式会社 | Infrared lens unit, imaging module, and imaging device |
| CN103733109B (en) * | 2011-08-11 | 2017-03-15 | 日立麦克赛尔株式会社 | Infrared lens unit, imaging module, and imaging device |
| US9720213B2 (en) | 2011-08-11 | 2017-08-01 | Hitachi Maxell, Ltd. | Infrared lens unit, image capture module, and image capture device |
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