CN103312950A - Imaging device - Google Patents
Imaging device Download PDFInfo
- Publication number
- CN103312950A CN103312950A CN2013100873997A CN201310087399A CN103312950A CN 103312950 A CN103312950 A CN 103312950A CN 2013100873997 A CN2013100873997 A CN 2013100873997A CN 201310087399 A CN201310087399 A CN 201310087399A CN 103312950 A CN103312950 A CN 103312950A
- Authority
- CN
- China
- Prior art keywords
- filter
- light
- optical filtering
- maintaining part
- filtering portion
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Granted
Links
Images
Landscapes
- Blocking Light For Cameras (AREA)
- Studio Devices (AREA)
Abstract
The present invention relates to an image deice which can effectively and simultaneously acquire a light beam which is emitted from the same point on an object to be imaged and contains multiple light information. The imaging device (10) comprises an imaging lens (20) which catches the light beam emitted from the object to be imaged (100); a filtering unit (30) having a plurality of filters (31, 33) generating light beams of different light information based on the incident light beam; a holding unit (40) for holding the filters of the filtering unit, and configured to allow the boundary of adjacent filters to be exposed from the region where the incident light beam from the imaging lens passes through the filtering unit; an area dividing unit (60) by which the light beams having passed through the filters with different light information are divided into multiple areas respectively; and an imaging element array (70) for receiving the light beams which has been divided into multiple areas by the area dividing unit, and outputting image information.
Description
Technical field
The present invention relates to obtain the camera head of the optical information of subject.
Background technology
About obtaining the camera head of object light information, the well-known camera head of taking normal image and polarisation image that is useful on.This camera head can be used for as the endoscope apparatus in the medical field.
Utilize the endoscope apparatus of above-mentioned camera head specifically to comprise to insert in the body cavity and take normal image and polarisation image introscope, to this introscope provide illumination light light supply apparatus, the built-in imaging apparatus of introscope is carried out the processor that signal handles and the display that shows the image signal of this processor output.And in order to extract the information in subject surface or deep, not only need to take normal image, and need to take the polarisation image.
Yet existing camera head is obtained different light signals by changing filter or light source, thus have that the same point that can't side by side effectively obtain on the subject penetrates comprise a plurality of optical informations at interior light.In the above-mentioned endoscope apparatus that exemplifies, be used for obtaining the pattern of normal image and be the exclusiveness pattern for the pattern that obtains polarized light image, can't obtain normal image and polarized light image simultaneously for this reason.
Summary of the invention
In view of the above problems, the invention provides a kind of camera head, its purpose be simultaneously and obtain effectively that same point on the subject penetrates comprise a plurality of optical informations at interior light.
Camera head of the present invention constitutes and comprises: imaging lens system is used for catching the light that penetrates from subject; Optical filtering portion wherein arranges many pieces of filters, and these many pieces of filters are based on the described light via described imaging lens system incident, generate have different optical informations respectively restraint light; The filter maintaining part be used for to keep described optical filtering portion, and this filter maintaining part constitutes, and allows the interface of adjacent filter from via exposing the described light of the described imaging lens system incident zone by described optical filtering portion; Region Segmentation portion is used for and will be divided into a plurality of zones separately by described filter and the light of respectively restrainting with different optical informations; And the imaging apparatus array be used for to be accepted respectively to be restrainted light and output image information by what described Region Segmentation portion was divided into a plurality of zones.
Effect of the present invention is simultaneously and to obtain effectively from what the same point of subject penetrated and comprises a plurality of optical informations at interior light.
Description of drawings
Fig. 1 relates to the schematic diagram of the camera head of first execution mode.
Fig. 2 A and Fig. 2 B relate to the optical filtering portion of first execution mode and the schematic diagram of filter maintaining part.
Fig. 3 relates to the schematic diagram of the macropixel of first execution mode.
Fig. 4 relates to the schematic diagram of the filter interface of first execution mode.
Fig. 5 relates to the optical filtering portion of comparative example and the schematic diagram of filter maintaining part.
Fig. 6 relates to the schematic diagram of the macropixel of comparative example.
Fig. 7 relates to the schematic diagram of the camera head of second execution mode.
Fig. 8 relates to the schematic diagram of the filter interface of the 3rd execution mode.
Fig. 9 relates to the schematic diagram of the macropixel of the 3rd execution mode.
Figure 10 relates to the schematic diagram of the camera head of the 4th execution mode.
Figure 11 A and Figure 11 B are the structural representations of a routine mobile device.
Figure 12 relates to the schematic diagram of the macropixel of the 4th execution mode.
Figure 13 relates to the schematic diagram of the camera head of the 5th execution mode.
Figure 14 is an example is made two dimensional image of image processing part manufacture method flow chart.
Figure 15 is the simple view of a routine imaging apparatus array.
Figure 16 is an example is made two dimensional image of image processing part under the situation that the filter interface is moved manufacture method flow chart.
Description of symbols: 10,10A, 10B, the 10C camera head, 20 first lens, 30 optical filtering portions, 31,32,33,34 filters, 40 filter maintaining parts, 41 frame portions, 42 press sections, 42x peristome, 50 second lens, 60 lens arras, 60A pinhole array, 61 micro lens, the 61x peristome, 70 imaging apparatus arrays, 71 macropixels, 71a, 71b, 71c, the 71d subregion, 71x, 71y, the 71z shade, 80 mobile devices, 81,82 screws, 83,84 elastomers, 90 image processing parts, 100 subjects, 110 fixed parts, 111 plate shape portions, the 112 upright portions, 150 two dimensional images of establishing.
Embodiment
Below with reference to the description of drawings embodiments of the present invention.In each accompanying drawing the part with same structure is marked same tag, and omit repeat specification.
First execution mode
Fig. 1 relates to the schematic diagram of the camera head of first execution mode.According to Fig. 1 as can be known, camera head roughly has first lens 20, optical filtering portion 30, filter maintaining part 40, second lens 50, lens arra 60 and imaging apparatus array 70.Mark 100 expression subjects.
Like this, lens arra will be divided into a plurality of zones from the light of bringing together of second lens 50, thereby just obtain the image through Region Segmentation on the imaging apparatus array 70, and the signal between the adjacent cut zone does not repeat.
Imaging apparatus array 70 is used for the light that acceptance is dispersed through micro lens 61, and converts this light to the signal of telecommunication, output image information.Imaging apparatus array 70 can adopt for example metal-oxide semiconductor element (MOS), complementary metal oxide semiconductor element (CMOS), charge coupled cell (CCD), contact-type image sensor (CIS) etc.
The part of imaging apparatus array 70 is called as macropixel 71.Each micro-lens array that constitutes lens arra has corresponding with it macropixel 71.Have a plurality of pixels according to pixel 71, the size of each pixel is for example several microns.
Like this, in camera head 10, the light of the arbitrfary point emission on the subject 100 is transformed into the light of almost parallel by first lens 20, then via optical filtering portion 30 incidents, second lens 50, convert to by second lens 50 and to bring light together, imaging on the position of lens arra 60.Then, a plurality of micro lens in the lens arra 60 61 make to be dispersed again and is incident upon each macropixel 71 in the imaging apparatus array 70 from the light of bringing together of second lens 50, obtains image informations by imaging apparatus array 70.
The focal length of in imaging apparatus 10, representing first lens 20 and second lens 50 with F, and represent to constitute the focal length of the micro lens 61 of lens arra 60 with f.Distance B a between the center of the center of subject 10 and first lens 20 equates with the focal length F of first lens 20.Second lens 50 equate with the focal length F of second lens 50 with distance B b between the lens arra 60.
Because camera head 10 has structure shown in Figure 1, thereby can constitute the light field camera.The light field camera is cut apart the light of incident camera with micro lens, thereby can obtain the image of different points of view with a shot.For this reason, the image of taking based on the light field camera carries out computing, can generate the image of viewpoint, opening bore, focusing focal length arbitrarily.By constituting the structure of light field camera, imaging apparatus array 70 not only can detect the monochrome information of the light that subject 100 sends, but also can detect directional information.
Then be described in further detail optical filtering portion 30 and filter maintaining part 40.Fig. 2 relates to the optical filtering portion of first execution mode and the schematic diagram of filter maintaining part.Fig. 2 A only shows optical filtering portion, and Fig. 2 B shows that optical filtering portion is subjected to the state (identical with the state among Fig. 1) that the filter maintaining part keeps.
According to Fig. 2 as can be known, optical filtering portion 30 has the filter 31,32,33 and 34 of being located at assigned position.The press section 42 that filter maintaining part 40 has frame portion 41 and is fixed on frame portion 41 inboards.Be provided with flat shape near the center of press section 42 and be roughly circular peristome 42x.
In other words, be used for to keep filter 31,32,33,34 filter maintaining part 40, filter 31,32,33, each part of having a common boundary of 34 are exposed from the zone of the optical filtering portion 30 that incident ray passed through that first lens 20 penetrate.Further be specially, be positioned at least a portion on filter 31,32,33, each part of having a common boundary of 34 part of having a common boundary and expose from the peristome 42x that keeps filter 31,32,33,34 press section 42.Light via 20 incidents of first lens passes through peristome 42x.
Each filter 31,32,33,34 can constitute, and for example the glass plate deposition that is roughly rectangle in flat shape forms lamination film with predetermined characteristic etc.Each filter 31,32,33,34 characteristics are different.For example, the filter of filter 31 for allowing red light to see through, the filter of filter 32 for allowing green light to see through, the filter of filter 33 for allowing blue ray to see through, the filter of filter 31 for allowing visible rays to see through.
Filter is maintained at the inboard of the frame portion 41 of filter maintaining part 40, and two sides in each tablet filter link to each other with the side of other filter.Only contact with each other between the side of these two sides and other filters that link to each other, be not bonded together.
In each filter 31,32,33,34, on the zone that the light of the face (plane of incidence) that is arranged in first lens, 20 1 sides does not see through, have the press section 42 of part zone contact filter maintaining part 40 at least, and be subjected to filter maintaining part 40 and press.
In each filter 31,32,33,34, the side that is positioned at frame portion 41 1 sides can also be bonded on the medial surface of frame portion 41.In addition, can also spring members be set in frame portion 41, constitute the structure of filter 31,32,33,34 being pushed to the center of frame portion 41 respectively.Also can be bonded on the press section 42 with press section 42 contacted parts and be positioned in each filter 31,32,33,34 on the face of first lens, 20 1 sides.Like this, frame portion 41 and press section 42 are set and prevent filter 31,32,33,34 come off.
And then, when the face (plane of incidence) of a side of each filter 31,32,33,34 first lens 20 arranges press section 42, the identical or different miscellaneous part (wherein being provided with peristome) in press section 42 of one side of shape and first lens 20 can also be set at the face (outgoing plane) of each filter 31,32,33,34 second lens, 50 1 sides, this miscellaneous part is with frame portion 41 and press section 42 clamping filters 31,32,33,34, constitutes filter 31,32,33,34 maintenance structure.
Preferably in the scope that does not hinder from the light incident of first lens 20, reduce the size of peristome 42x as far as possible.In order to ensure the filter maintaining part 40 stable optical filtering portions 30 that keep, increase the contact area between the face of first lens, 20 1 sides in press section 42 and each filter 31,32,33,34 as far as possible.The flat shape of peristome 42x is not limited in slightly rounded, for example, can also omit arbitrary shapes such as ovalize, rectangle and polygonal.
In addition, for example in the time need not grading from the periphery of the incident ray of first lens 20, the openings of sizes of peristome 42x can make peristome 42x play the aperture effect less than the area of section from the incident ray of first lens 20.At this moment, be blocked from the part in the incident ray of the incident optical filtering portion 30 of first lens 20, remaining part sees through optical filtering portion 30, shoots to second lens 50.
For example formation such as resin or metal can be used in the frame portion 41 of filter maintaining part 40 and press section 42.In addition, in the filter maintaining part 40 shown in Fig. 1 and Fig. 2 B, frame portion 41 and press section 42 form separately, and in addition, frame portion 41 and press section 42 also can be integrally formed with same material.
Present embodiment illustrates with vertical 2 * horizontal stroke, 2 ( filters 31,32,33,34) and comes space segmentation optical filtering portion 30, but the present invention is not so limited.In order to obtain a plurality of light signals simultaneously, as long as satisfied two pieces of filters of needs at least just can.For example, optical filtering portion 30 can constitute the filter that two pieces of flat shapes slightly are rectangle is set, and these two pieces of filters contact with each other, and keeps this optical filtering portion 30 with filter maintaining part 40.
Below the light beam of explanation scioptics array 60 is separated into the process of a plurality of light signals.At this, be that 21 * 21 pixels are that example describes with macropixel 71 sizes of corresponding micro lens 61.
Fig. 3 relates to the schematic diagram of the macropixel of first execution mode.According to Fig. 3 as can be known, macropixel 71 comprises subregion 71a, 71b, 71c, 71d.See through the light of optical filtering portion 30 by macropixel 61 time, owing to take a turn for the worse up and down, thereby subregion 71a, 71b, 71c, 71d accept respectively and filter shown in Figure 2 34,33,32,31 corresponding light signals.
But filter 31,32,33, each part of having a common boundary of 34 are exposed from the zone that incident ray passed through of first lens 20 from optical filtering portion 30, for this reason, can dwindle the zone of shade 71x, effectively obtain optical information in the present embodiment.
Below with comparative example the above is described in further detail.Fig. 5 relates to the optical filtering portion of comparative example and the schematic diagram of filter maintaining part.According to Fig. 5 as can be known, filter maintaining part 400 comprises frame portion 410 and is positioned at the press section 420 that frame portion 410 inboards are fixed, and is used for keeping constituting the filter 31,32,33,34 of optical filtering portion 30.
Fig. 6 relates to the schematic diagram of the macropixel of comparative example.Form shown in Figure 6 is for replacing the form of the filter maintaining part 40 in the camera head 10 shown in Figure 1 with filter maintaining part 400.
According to Fig. 6 as can be known, the cross shade 71y that produces in the macropixel 71 results from the press section 420 of filter maintaining part 400.Owing to have press section 420 in the filter maintaining part 400, therefore produce the shade 71y corresponding with this press section 420, though on the part with shade 71, there is photo detector (pixel), can not obtain light signal.In other words, shade 71y causes loss of optical signal.
For example, the cross sectional shape of establishing incident filter 31,32,33,34 incident ray is the circle of diameter 2mm, and the width of press section 420 is 0.5mm, and at this moment, shade 71y covers the about 1/4 of pixel that macropixel 71 has, and this part optical information is received loss.
On the other hand, as mentioned above, the filter maintaining part 40 that relates to present embodiment shown in Fig. 2 B is not established the cross press section, exposes filter 31,32,33,34 the part of respectively having a common boundary in the zone from the optical filtering portion 30 that incident ray passed through of first lens 20.For this reason, the zone of generation shade 71x as shown in Figure 3 has significantly than the zone of generation shade 71y shown in Figure 6 and reduces, and light signal is obtained efficient and increased.
As mentioned above, in the camera head 10 that relates to first example, be provided with the space segmentation filter corresponding to a plurality of optical informations, it is filter 31,32,33,34, these filters 31,32,33, each part of having a common boundary of 34 are always exposed in the zone that incident ray passed through of first lens 20, help to reduce to produce on each macropixel the zone of shade like this, can effectively obtain the light that a plurality of optical informations were sent and comprised on the subject 100 same point simultaneously.
Second execution mode
Second execution mode shows that an example replaces lens arra with pinhole array.In second execution mode, omit explanation and have the part of same structure with the example that had illustrated.
Fig. 7 is the schematic diagram that relates to the camera head of second execution mode.According to Fig. 7 as can be known, the difference of camera head 10A and camera head 10 shown in Figure 1 is to have replaced lens arra 60 with pinhole array 60A.
As mentioned above, will be divided into a plurality of zones from the light beam of bringing together of second lens 50 with pinhole array 60A, in order to obtaining to be divided into the image in a plurality of zones in imaging apparatus array 70, and the signal between the adjacent area does not repeat.
For pinhole array 60A, can adopt at transparent components such as glass and be provided with the parts that constitute light shielding part with metal film or black resin, and a part wherein forms peristome 61x, perhaps adopts the parts that are provided with peristome 61x at the light shielding part with formations such as sheet metals.The flat shape of peristome 61x is circular or ellipse, rectangle or other more complicated shapes.At this, pinhole array 60 only is a representative example of the Region Segmentation portion that the present invention relates to.
As mentioned above, replace lens arra 60 with pinhole array 60A, its effect not only is equal to first execution mode, eliminates diffraction phenomena other all optical aberrations in addition but also can separate fully.But the weak point of thereupon bringing is that picture becomes darker, thereby above-mentioned effect need can obtain competence exertion effect under the photography situation of abundant light quantity.
The 3rd execution mode
The 3rd execution mode shows that an example can obtain the execution mode of optical information more effectively than first execution mode.In the 3rd execution mode, omit explanation and have the part of same structure with the example that had illustrated.
Fig. 8 relates to the schematic diagram of the filter boundary part of the 3rd execution mode.Fig. 9 relates to the schematic diagram of the macropixel of the 3rd execution mode.In the first embodiment as shown in Figure 4, the both sides, outer edge of filter 31 and 32 are all applied chamfered, filter 33 is also applied identical chamfered with 34.And light is not being done straightaway when being applied in chamfered regional, for this reason, shade 71x shown in Figure 3 takes place.
To this, as shown in Figure 8, the both sides, outer edge to filter 310 and 320 do not apply chamfered in the 3rd execution mode.For this reason, can reduce light to greatest extent and not make straightaway part, than the zone of generation shade 71x shown in Figure 3, the zone of generation shade 71z shown in Figure 9 further reduces, and obtains optical information more effectively for this reason.But the face for not contacting with other filters in the filter 310,320,330,340 can apply the chamfered identical with Fig. 4.
In addition, in filter shown in Figure 8 310,320,330,340, though the face that contacts other filters is not applied chamfered, shade 71z shown in Figure 9 also can take place, its reason is that reflection or the decay of incident ray partly upward take place in the boundary of each filter.
As mentioned above, the 3rd execution mode does not apply chamfered to the face that contacts with other filters in the filter 310,320,330,340, thereby compares with first execution mode, can obtain optical information more effectively.
The 4th execution mode
The 4th execution mode shows to have the embodiment that makes the structure that optical filtering portion 30 is moved.In the 4th execution mode, omit explanation and have the part of same structure with the example that had illustrated.
Figure 10 shows the schematic diagram of the camera head that relates to the 4th execution mode.According to Figure 10 as can be known, the difference of camera head 10B and camera head 10 shown in Figure 1 is, has increased mobile device 80 among the camera head 10B.
Mobile device 80 can make optical filtering portion 30 and filter maintaining part 40 in the optical axis direction movement that is approximately perpendicular to via the incident ray of first lens, 20 incidents, and keeps motionless at an arbitrary position.For example mobile device 80 is constituted two feed screws that in fixed part, slightly arrange perpendicular to mutually orthogonal on the face of optical axis, in order to optical filtering portion 30 and filter maintaining part 40 are remained on the fixed part with removable state.
And filter maintaining part 40 there is no need to move with optical filtering portion 30.For this reason, mobile device 80 for example can also constitute, and is fixed part with filter maintaining part 40, and optical filtering portion 30 is remained in the filter maintaining part 40 with removable state, makes optical filtering portion 30 move with respect to filter maintaining part 40.
Figure 11 is the schematic diagram of a routine mobile device, and this figure is the figure that observes along via the optical axis direction of the incident ray of first lens, 20 incidents.Wherein, Figure 11 A is the structural representation that a routine optical filtering portion and filter maintaining part can move with respect to fixed part.
According to Figure 11 A as can be known, optical filtering portion 30 and filter maintaining part 40 remain on the fixed part 110 with removable state.Fixed part 110 constitutes for example has the slightly rectangular plate shape portion 111 of flat shape and the upright portion 112 that establishes, and this upright portion 112 that establishes is used for making the peripheral edge portion of plate shape portion 111 be the shaped as frame projection.But plate shape portion 111 and upright establish portion 112 both one constitute, mode such as also can bond constitutes in conjunction with different parts.
Exemplify a mobile device 80 of being located on the fixed part 110 at this, comprising screw 81 and 82 and elastomer 83 and 84.Further specifically constitute screw 81 and 82 is screwed into and be positioned at the upright not shown screw of portion's 112 upper portions and left part of establishing.
The outer wall of the upper portion of the frame portion 41 of the preceding end in contact filter maintaining part 40 of screw 81 is pushed filter maintaining part 40 to elastomer 83, makes elastomer 83 shrink, and vertically seizes optical filtering portion 30 and filter maintaining part 40 on both sides by the arms.The outer wall of the left part of the frame portion 41 of the preceding end in contact filter maintaining part 40 of screw 82 is pushed filter maintaining part 40 to elastomer 84, makes elastomer 84 shrink, and laterally seizes optical filtering portion 30 and filter maintaining part 40 on both sides by the arms.
Figure 11 B shows the structure that an example moves with respect to the filter maintaining part as fixed part and optical filtering portion with the filter maintaining part.According to Figure 11 B as can be known, optical filtering portion 30 to remain on fixed part with removable state be on the filter maintaining part 40.
The outer wall of the filter 31 of the preceding end in contact optical filtering portion 30 of screw 81 and 32 upper portion is pushed optical filtering portion 30 to elastomer 83, makes elastomer 83 shrink, and vertically clamping keeps optical filtering portion 30.The outer wall of the filter 31 of the preceding end in contact optical filtering portion 30 of screw 82 and 33 left part is pushed optical filtering portion 30 to elastomer 84, makes elastomer 84 shrink, and laterally clamping keeps optical filtering portion 30.Preferably will contact the screw 81 of corresponding filter outside wall surface and 82 front end and be made as the par.
In shown in Figure 11 A and Figure 11 B, if be not that aperture uses with the peristome 42x of press section 42, then need the unlikely size that is subjected to coverage extent of light of incident optical filtering portion 30 when moving in optical filtering portion 30 that peristome 42x is pre-formed.
Figure 12 is the schematic diagram that an example relates to the macropixel of the 4th execution mode, and this figure shows the macropixel when moving optical filtering portion 30 (perhaps optical filtering portion 30 and filter maintaining part 40) with mobile device shown in Figure 10 80.In other words, Figure 12 shows the form of position of intersecting point (hereinafter referred to as the interface position of intersecting point) when departing from optical axis of a routine filter 31, each interface of 32,33,34.
The interface position of intersecting point departs from optical axis makes that subregion 71a, 71b, 71c, 71d area separately is different, and the position of shade 71x is moved.For example, obtain more optical information from the filter 34 of counterpart zone 71a if desired, then available mobile device 80 comes mobile interface position of intersecting point, make subregion 71a area as shown in figure 12, greater than the area of other subregions.About effectively obtaining optical information, present embodiment has the effect identical with first execution mode.
As mentioned above, be provided with mobile device 80 in the 4th execution mode, be used for making optical filtering portion 30 (perhaps optical filtering portion 30 and filter maintaining part 40) mobile in slightly perpendicular to the plane of optical axis, can obtain from the filter of appointment more to many optical information than other filters for this reason.
Accordingly, present embodiment is effective under following occasion.For example, under the situations such as sensitivity difference of the transmission difference between the compensation filter 31,32,33,34 or 70 pairs of wavelength of compensation imaging apparatus array, need obtain more light signal from the filter of appointment, this moment, present embodiment was effective.This is external when obtaining light signal with respect to other filters from the filter of appointment with higher S/N value or also effective from specifying filter to obtain occasions such as more light signal is used for averaging.
The 5th execution mode
The 5th execution mode shows the making of a routine two dimensional image.In the 5th execution mode, omit explanation and have the part of same structure with the example that had illustrated.
Figure 13 relates to the schematic diagram of the camera head of the 5th execution mode.According to Figure 13 as can be known, the difference of camera head 10C and camera head 10 shown in Figure 1 is to set up image processing part 90.
Image processing part 90 has the function of making two dimensional image based on the signal of telecommunication (picture signal) of imaging apparatus array 70 outputs.Image processing part 90 comprises for example CPU, ROM, main storage etc., and its every function is carried out the program that reads on the main storage by CPU and is achieved from be kept at ROM.In addition, part or all function of image processing part 90 can also only realize with hardware.And then image processing part 90 can also comprise a plurality of devices.
Below with reference to Figure 14 and Figure 15 the method that image processing part shown in Figure 13 90 is made two dimensional image is described.At first, flow chart shown in Figure 14 is described, then further remarks additionally with reference to Figure 15.
As shown in figure 14, at first in step S201, catch the light that penetrates from subject 100 with first lens 20.Secondly in step S202, be separated in the light that step S201 catches with optical filtering portion 30, second lens 50 and lens arra 60, form the multi beam light that comprises optical information.
Secondly in step S203, the multi beam of accepting to separate among the step S202 with imaging apparatus array 70 comprises the light of optical information.Then in step S204, image processing part 90 is obtained the corresponding signal of telecommunication of accepting with imaging apparatus array 70 of light quantity.Then in step S205, image processing part 90 rearranges the signal of telecommunication of obtaining from imaging apparatus array 70.Then in step S206, several comprise the binary picture of predetermined optical information image processing part 90 outputs.
Figure 15 is the schematic diagram of imaging apparatus array.At this, for convenience of explanation, establish imaging apparatus array 70 among Figure 15 centered by macropixel 71 and constitute with 3 * 3 macropixel.Represent each macropixel with the part that thick line centers on.
Macropixel with 21 * 21 pixels in Fig. 3 etc. is that example is illustrated, and in Figure 15 for convenience of explanation, comprise macropixel 71 and constitute with horizontal 2 pixels * vertical 2 pixels at each interior macropixel.That is to say, comprise macropixel 71 and possess and filter 31,32,33,34 subregion one to one at each interior macropixel.
The explanation of doing among step S205 as shown in figure 14 and the S206, image processing part 90 rearrange the signal of telecommunication of imaging apparatus array 70 outputs, comprise a plurality of two dimensional images of predetermined light signal in order to making.For example, shown in the arrow among Figure 15, rearrange the signal of telecommunication that is positioned at upper left pixel in each macropixel, in order to make the two dimensional image 150 that 9 pixels that comprise the optical information corresponding with the filter 34 of Fig. 2 constitute.
Equally, rearrange the signal of telecommunication of the top-right pixel of each macropixel, make the two dimensional image that 9 pixels that comprise the optical information corresponding with the filter 33 of Fig. 2 constitute, rearrange the signal of telecommunication of pixel of the lower left of each macropixel, make the two dimensional image that 9 pixels that comprise the optical information corresponding with the filter 32 of Fig. 2 constitute, rearrange the signal of telecommunication of the bottom-right pixel of each macropixel, in order to make the two dimensional image that 9 pixels that comprise the optical information corresponding with the filter 31 of Fig. 2 constitute.
In fact there are a plurality of pixels in the each several part zone of each macropixel, thereby not only can be subordinated to and take out the output valve that a pixel rearranges this pixel in the pixel in various piece zone, but also can calculate the total of output valve of the pixel that belongs to the various piece zone or average, then rearrange.Contrast above-mentioned two kinds of methods, namely calculate total or the method that on average then rearranges and method that pixel rearranges of taking-up of the output valve of the pixel that belongs to the various piece zone, the former is to improve the ratio (SN than) of signal and noise with respect to the latter's advantage, namely can reduce noise effect.
And adopt the latter, and namely be subordinated to and obtain the method that a pixel is redistributed in the pixel in each several part zone, can make a plurality of two dimensional images with parallax.Obtain amount of movement based on a plurality of two dimensional images of making, and based on the amount of movement of obtaining, can infer the distance between camera and the subject.
For easy, the macropixel quantity of in the explanation of Figure 15, using considerably less (3 * 3), but in fact by increasing the number of the macropixel 61 that constitutes lens arra 60, namely by increasing macropixel quantity, can obtain significant two dimensional image.
The 6th execution mode
The 6th execution mode is the embodiment that makes two dimensional image under the situation of mobile device having.In the 6th execution mode, omit explanation and have the part of same structure with the example that had illustrated.
Image processing part shown in Figure 13 90 is connected on the imaging apparatus array 70 among the camera head 10B shown in Figure 10, when driving mobile device 80, obtains image.Below with reference to the flowchart text shown in Figure 16 processing of image processing part 90 in this case.
As shown in figure 16, at first in step S301, with mobile device 80 make optical filtering portion 30 and filter maintaining part 40 with respect to fixed part 110 slightly perpendicular to the optical axis direction mobile (referring to Figure 11 A) through the light of first lens, 20 incidents.Perhaps, mobile device 80 makes that optical filtering portion 30 is that filter maintaining part 40 is slightly moving (referring to Figure 11 B) perpendicular to the optic biradial direction via 20 incidents of first lens with respect to fixed part.
Secondly in step S302～S304, determine each zone.At first in step S302, be located at first lens 20 even brightness surface source luminescence before, then in step S303, take to proofread and correct and use image.Image in this acquisition is called as the light field image.The light field image is only arranged macropixel with the macropixel quantity that constitutes lens.
In step S301, make optical filtering portion 30 or optical filtering portion 30 and filter maintaining part 40 be moved with mobile device 80, at this, along with this moves, the picture of macropixel interface is that shade 71x is moved in macropixel 71, thereby obtains above-mentioned image shown in Figure 12.In example shown in Figure 12, the interface intersection point is not positioned at the center of macropixel 71, but moves to the lower right of macropixel 71.
In step S303, obtain correcting image, shade 71x corresponding with the filter interface in this correcting image is more silent, and the zone except shade 71x is bright relatively among subregion 71a, 71b, 71c, the 71d.At this, the size of preferred area source is greater than the opening of first lens 20.
Secondly in step S304, the correcting image of taking among the step S303 is carried out binary conversion treatment and mark processing.Through after the binary conversion treatment, for example the shade 71x The corresponding area in the macropixel 71 shown in Figure 12 becomes black, and the zone except shade 71x is white among subregion 71a, 71b, 71c, the 71d.
Mark is handled and is referred to give the processing that same label is numbered to the pixel that is connected and the group with mutually homochromy information.For example, at first in macropixel 71 on not the mark pixel give new tag number.Secondly, the pixel that connection is endowed the pixel of new tag number and has mutually homochromy information is given the same label numbering.Again, the pixel that connection is endowed the pixel of same label numbering and has mutually homochromy information is given the same label numbering.
Aforesaid operations is given identical marker number to same coordinator repeatedly.Then, the pixel that does not have marker number is made same treatment, all be endowed marker number up to all pixels and just finish the mark processing.Handle through mark, for example, the zone among subregion 71a, 71b, 71c, the 71d except shade 71x all is endowed each marker number 1,2,3,4, and the zone of shade 71x correspondence is endowed marker number 0.So far, end region determines.
In other words, when making that with mobile device 80 optical filtering portion 30 or optical filtering portion 30 and filter maintaining part 40 are moved, along with this moves, the picture of the interface of filter is mobile in each macropixel, at this moment, the pixel region corresponding with filter 31～34 is able to cognition in each macropixel.
Then in step S305, take the subject that needs to measure optical information with camera head 10B, obtain the light field image.Then, carry out mean value calculation and handle, to the subregion 71a, the 71b that handle through mark, 71c, 71d (namely being endowed marker number 1,2,3, each pixel region of 4), the mean value of calculating pixel value.Binary conversion treatment among all macropixels implementation above-mentioned steps S304 and the mean value calculation that marks among processing, the step S305 are handled.
And then in step S306, identical with step S205 shown in Figure 14, rearrange the signal of telecommunication as shown in figure 15, then in step S307, form a plurality of corresponding to filter 31～34 and comprise the two dimensional image of different optical informations.
About binary conversion treatment with mark is handled and mean value calculation is handled, the program of available main storage reading and saving in the not shown ROM of image processing part 90 etc. for example, and carry out this program by CPU and carry out these processing automatically.In addition, also can carry out binary conversion treatment, mark processing and mean value calculation automatically with the hardware of composing images handling part 90 handles.Though also can manually mark processing to replace binary conversion treatment while observing the image that shows on the display screen, troublesome poeration is preferably handled with image processing part automatically for this reason.
As mentioned above, in the 6th execution mode, when the picture of the interface of optical filtering portion drives along with mobile device 80 that optical filtering portions 30 move and when moving in each macropixel, the image-region corresponding with filter 31～34 in image processing part 90 cognitive each macropixel.Thus, image processing part 90 based on cognition to pixel region obtain different optical informations corresponding to filter 31～34, form a plurality of two dimensional images that comprise corresponding to the different optical informations of filter 31～34.
That is to say, mobile device 80 makes optical filtering portion 30 move, follow this to move, filter interface in each macropixel is moved, image processing part 90 makes the zone that is used for accepting different optical informations in each macropixel change along with the moving of picture of filter interface, thus, also can form a plurality of two dimensional images that comprise different optical informations under the situation that optical filtering portion 30 moves making with mobile device 80.
Preferred implementation more than has been described in detail in detail, but the present invention is not subjected to the restriction of these execution modes, allows without departing from the spirit and scope of the present invention above-mentioned execution mode suitably to be carried out various changes or displacement.
For example, optical filtering portion 30 is not limited to the filter of obtaining the branch optical information, can also be filter of for example obtaining polarisation information etc.In addition, can also be suitably in conjunction with various execution modes.
Claims (10)
1. camera head wherein comprises:
Imaging lens system is used for catching the light that penetrates from subject;
Optical filtering portion wherein arranges many pieces of filters, and these many pieces of filters are based on the described light via described imaging lens system incident, generate have different optical informations respectively restraint light;
The filter maintaining part be used for to keep described optical filtering portion, and this filter maintaining part constitutes, and allows the interface of adjacent filter from via exposing the described light of the described imaging lens system incident zone by described optical filtering portion;
Region Segmentation portion is used for and will be divided into a plurality of zones separately by described filter and the light of respectively restrainting with different optical informations; And,
The imaging apparatus array be used for to be accepted respectively to be restrainted light and output image information by what described Region Segmentation portion was divided into a plurality of zones.
2. camera head according to claim 1 wherein further possesses mobile device, is used for making described optical filtering portion mobile perpendicular to the direction via the optical axis of the light of described imaging lens system incident.
3. camera head according to claim 2, wherein,
With being that macropixel is accepted this each bar light with the described corresponding zone of light of respectively restrainting that is divided into a plurality of zones in the described imaging apparatus array,
And then possesses image processing part, when described mobile device makes described optical filtering portion move, and when the picture of the interface of described filter moves in described each macropixel along with the movement of this optical filtering portion, in cognitive described each macropixel of this image processing part corresponding to each pixel region of described filter, and according to from by the described different optical informations that obtain the cognitive described pixel region, form a plurality of a plurality of two dimensional images that comprise described different optical informations.
4. according to claim 2 or 3 described camera heads, wherein,
Described optical filtering portion and described filter maintaining part remain on the fixed part with removable state,
Described mobile device makes described filter and described filter maintaining part move with respect to described fixed part on perpendicular to the direction of described optical axis.
5. camera head according to claim 4, wherein,
Described mobile device possesses screw and elastomer, described screw is in the described filter maintaining part of prescribed direction pushing perpendicular to described optical axis, make described optical filtering portion and described filter maintaining part mobile in the direction perpendicular to described optical axis, be oppositely arranged across described filter maintaining part from the observed described elastomer of the direction that is parallel to described optical axis and described screw, and when being subjected to the pushing of described screw, shrink to described prescribed direction
Described screw and described elastomer keep described filter maintaining part with method of clamping.
6. according to claim 2 or 3 described camera heads, wherein,
Described optical filtering portion remains on the described filter maintaining part with removable state,
Described mobile device makes described filter move with respect to described filter maintaining part on perpendicular to the direction of described optical axis.
7. camera head according to claim 6, wherein,
Described mobile device possesses screw and elastomer, described screw is in the described optical filtering of the prescribed direction pushing portion perpendicular to described optical axis, make described optical filtering portion mobile in the direction perpendicular to described optical axis, be oppositely arranged across described optical filtering portion from the observed described elastomer of the direction that is parallel to described optical axis and described screw, and when being subjected to pushing, shrinks to described prescribed direction by described screw
Described screw and described elastomer keep this optical filtering portion with method of clamping.
8. according to any described camera head in the claim 1 to 7, wherein,
Described filter maintaining part has peristome, and the interface of adjacent filter is exposed from this peristome,
Described light via described imaging lens system incident passes through this peristome.
9. camera head according to claim 8, wherein,
Described filter maintaining part possesses the press section, and the surface that this press section contacts any one party in the plane of incidence of each described filter and the outgoing plane at least to be pressing each described filter,
Described peristome is formed in this press section.
10. according to any described camera head in the claim 1 to 9, wherein, do not apply chamfered on the interface of adjacent filter.
Applications Claiming Priority (4)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP2012053792 | 2012-03-09 | ||
| JP2012-053792 | 2012-03-09 | ||
| JP2012267244A JP6060659B2 (en) | 2012-03-09 | 2012-12-06 | Imaging device |
| JP2012-267244 | 2012-12-06 |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN103312950A true CN103312950A (en) | 2013-09-18 |
| CN103312950B CN103312950B (en) | 2016-12-28 |
Family
ID=49137706
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201310087399.7A Expired - Fee Related CN103312950B (en) | 2012-03-09 | 2013-03-08 | Camera head |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN103312950B (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107980219A (en) * | 2017-10-20 | 2018-05-01 | 深圳市汇顶科技股份有限公司 | Pixel sensing module and image capturing device |
| CN110913113A (en) * | 2019-12-27 | 2020-03-24 | 维沃移动通信有限公司 | Shooting module and electronic equipment |
Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101150977A (en) * | 2005-04-13 | 2008-03-26 | 奥林巴斯医疗株式会社 | Image processor and image processing method |
| CN101631194A (en) * | 2008-06-18 | 2010-01-20 | 株式会社理光 | Image pickup |
| JP2012005056A (en) * | 2010-06-21 | 2012-01-05 | Canon Inc | Image processing device, image processing method and program |
| JP2012013539A (en) * | 2010-06-30 | 2012-01-19 | Sanyo Electric Co Ltd | Imaging device |
-
2013
- 2013-03-08 CN CN201310087399.7A patent/CN103312950B/en not_active Expired - Fee Related
Patent Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101150977A (en) * | 2005-04-13 | 2008-03-26 | 奥林巴斯医疗株式会社 | Image processor and image processing method |
| CN101631194A (en) * | 2008-06-18 | 2010-01-20 | 株式会社理光 | Image pickup |
| JP2012005056A (en) * | 2010-06-21 | 2012-01-05 | Canon Inc | Image processing device, image processing method and program |
| JP2012013539A (en) * | 2010-06-30 | 2012-01-19 | Sanyo Electric Co Ltd | Imaging device |
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107980219A (en) * | 2017-10-20 | 2018-05-01 | 深圳市汇顶科技股份有限公司 | Pixel sensing module and image capturing device |
| US10644045B2 (en) | 2017-10-20 | 2020-05-05 | Shenzhen GOODIX Technology Co., Ltd. | Pixel sensing module and image capturing device |
| CN110913113A (en) * | 2019-12-27 | 2020-03-24 | 维沃移动通信有限公司 | Shooting module and electronic equipment |
| CN110913113B (en) * | 2019-12-27 | 2022-01-04 | 维沃移动通信有限公司 | Shooting module and electronic equipment |
Also Published As
| Publication number | Publication date |
|---|---|
| CN103312950B (en) | 2016-12-28 |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN103037180B (en) | Imageing sensor and picture pick-up device | |
| CN105917641B (en) | With the slim multiple aperture imaging system focused automatically and its application method | |
| CN103119516B (en) | Light field camera head and image processing apparatus | |
| CN101500086B (en) | Image pickup apparatus | |
| CN101345826B (en) | Image pickup apparatus | |
| US20130113888A1 (en) | Device, method and program for determining obstacle within imaging range during imaging for stereoscopic display | |
| CN101919256B (en) | Imaging device | |
| US20130278802A1 (en) | Exposure timing manipulation in a multi-lens camera | |
| CN101883215A (en) | Imaging device | |
| JP5804055B2 (en) | Image processing apparatus, image processing method, and program | |
| US20140111681A1 (en) | Image sensor and image capturing apparatus | |
| CN101960861A (en) | Sensor with multi-perspective image capture | |
| JP2019092145A (en) | Image sensor with shifted microlens array | |
| JP2013214950A (en) | Imaging apparatus | |
| US20230204950A1 (en) | Imaging device, adjustment method, and adjustment program | |
| EP3131292B1 (en) | Plenoptic camera comprising a shuffled color filter array | |
| WO2013114895A1 (en) | Imaging device | |
| CN107710741B (en) | Method for acquiring depth information and camera device | |
| CN103312950A (en) | Imaging device | |
| CN104954645B (en) | Photographing element, picture pick-up device and image processing method | |
| WO2013057859A1 (en) | Image capture element | |
| US10778879B2 (en) | Image sensor and image-capturing device that selects pixel signal for focal position | |
| WO2019049193A1 (en) | Sensor module for fingerprint authentication, and fingerprint authentication device | |
| EP3104604A1 (en) | Light field imaging device | |
| US11899276B2 (en) | Imaging apparatus, information processing method, program, and interchangeable lens |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C06 | Publication | ||
| PB01 | Publication | ||
| C10 | Entry into substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20161228 Termination date: 20210308 |
|
| CF01 | Termination of patent right due to non-payment of annual fee |