CN101055343A - Resolution-adjustable imaging device - Google Patents
Resolution-adjustable imaging device Download PDFInfo
- Publication number
- CN101055343A CN101055343A CNA2006100753035A CN200610075303A CN101055343A CN 101055343 A CN101055343 A CN 101055343A CN A2006100753035 A CNA2006100753035 A CN A2006100753035A CN 200610075303 A CN200610075303 A CN 200610075303A CN 101055343 A CN101055343 A CN 101055343A
- Authority
- CN
- China
- Prior art keywords
- prism
- imaging device
- image sensor
- relative
- imaging
- 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.)
- Pending
Links
Images
Landscapes
- Optical Elements Other Than Lenses (AREA)
Abstract
A resolution-adjusting image device comprises a image sensor and a prism group for leading the imaging beam to the image sensor. The prism comprises a first prism and a second prism which parallelly moves between the first position and the second position relatively to the first prism, and the peak angle difference of the first prism and the second is 180 degrees. When the second prism is relatively to the first prism on the first position, the imaging beam through the first prism and the second prism is imaged in the first area of the image sensor. When the second prism is relatively to the first prism on the second position, the imaging beam through the first prism and the second prism is imaged in the second area of the image sensor.
Description
Technical field
The present invention relates to a kind of imaging device of adjusting resolution, particularly relate to a kind of design that utilizes the relative translation between prism in the prism group, image in the imaging device of the resolution adjusted of the zones of different of image sensor with the guiding imaging beam.
Background technology
In general image capture equipment, be to utilize Charged Coupled Device (Charge Couple Device, CCD) sensor sensing is treated the light signal of pick-up image, and does further processing by be converted into the analog signal treatment circuit that sends next stage behind the image signal to as offset buffer.For reaching high-resolution purpose, United States Patent (USP) the 4th, 438 promptly discloses a kind of image sensor of staggered (staggered) type sensing structure in No. 457, and the ccd sensor of using the staggered sensing structure of this kind already widely industry use.
Please refer to Fig. 1, it shows the synoptic diagram of the CCD linear array sensor of traditional staggered sensing structure.As shown in Figure 1, CCD linear array sensor 100 comprises strange preface sensor groups 101 and even preface sensor groups 102, and the resolution of strange preface sensor groups 101 and even preface sensor groups 102 is all 600dpi (dotper inch), and length is example with 9 inch all.Light sensation measuring point D1, D3 in the strange preface sensor groups 101 ... D10799 be with even preface sensor groups 102 in light sensation measuring point D2, D4 ... D10800 is staggered.
When carrying out the acquisition of image, for example use general scanner, be that CCD linear array sensor 100 is carried out an exposing operation, make strange preface sensor groups 101 and 102 while of even preface sensor groups sensing treat the light signal of pick-up image, light sensation measuring point D1, D3 ... D10799 and light sensation measuring point D2, D4 ... D10800 then produces corresponding signal electric charge (signal charge) S1, S3 respectively ... S10799 and S2, S4 ... S10800.The next stage circuit produces the corresponding image signal after receiving signal electric charge S1～S10800 according to this.By light sensation measuring point D1, D3 ... D10799 and light sensation measuring point D2, D4 ... the staggered structure of D10800, can obtain to double the quantity of the signal electric charge that only uses strange preface sensor groups 101 or even preface sensor groups 102 gained, picked image resolution also increases to 1200dpi.
Thus, CCD linear array sensor 100 utilizes staggered sensing structure and obtains higher image resolution with the sensor groups of low resolution, but it is mechanically down fixing in strange preface sensor groups 101 and even preface sensor groups 102, the highest resolution of image also with fixing, and be subject to manufacturing technology and cost, utilize the inevitable upper limit to some extent of resolution increasing degree of staggered sensing structure gained.
In addition, though strange preface sensor groups 101 and even preface sensor groups 102 are closely side by side, but signal electric charge S1, S3 ... S10799 and S2, S4 ... in fact S10800 corresponding image signal adheres to different scanning line gained separately, right CCD linear array sensor 100 is considered as same sweep trace with it and handles, and but causes pick-up image and the former error for the treatment of pick-up image when increasing resolution.Moreover, for the face sensor array, obviously also can't use the staggered sensing structure of this kind to increase resolution.
Summary of the invention
In view of this, the purpose of this invention is to provide a kind of imaging device of adjusting resolution.Imaging device is with the design of the relative translation between prism in the prism group, and the guiding imaging beam images in the zones of different of image sensor and reaches the effect that increases resolution.By this, need not increase the sensor groups of image sensor, also can be applicable to the face sensor array, and not have pick-up image and treat error problem between pick-up image.
According to purpose of the present invention, a kind of imaging device of adjusting resolution is proposed, comprise image sensor and prism group.The prism group is in order to guide imaging beam to image sensor.The prism group comprises first prism and second prism, and the relative first prism translation of second prism is between the primary importance and the second place, and the drift angle direction of first prism and second prism differs 180 degree.And when relative first prism of second prism is positioned at primary importance, image in the first area of image sensor via the imaging beam of first prism and second prism.When relative first prism of second prism is positioned at the second place, image in the second area of image sensor via the imaging beam of first prism and second prism.
For above-mentioned purpose of the present invention, feature and advantage can be become apparent, two examples cited below particularly, and be described with reference to the accompanying drawings as follows.
Description of drawings
Fig. 1 shows the synoptic diagram of the CCD linear array sensor of traditional staggered sensing structure.
Fig. 2 shows the imaging device synoptic diagram according to preferred embodiment of the present invention.
Fig. 3 shows according to the two prisms 221 of example one of the present invention and 222 relative translation synoptic diagram.
Fig. 4 shows according to the prism translation of example one of the present invention and image sensor exposure time series figure.
Fig. 5 A shows another relative translation synoptic diagram according to the two prisms 221 of example one of the present invention and 222.
Fig. 5 B shows the relative translation synoptic diagram again according to the two prisms 221 of example one of the present invention and 222.
Fig. 6 shows according to the relative translation synoptic diagram between the prism of example two of the present invention.
Fig. 7 shows the imaging region synoptic diagram according to image sensor among Fig. 6 210.
Fig. 8 shows according to the prism translation of example two of the present invention and image sensor exposure time series figure.
Fig. 9 shows according to another relative translation synoptic diagram between the prism of example two of the present invention.
The reference numeral explanation
100:CCD linear array sensor
101: strange preface sensor groups
102: even preface sensor groups
D1～D10800: light sensation measuring point
200: imaging device
210: image sensor
220: the prism group
221: the first prisms
222: the second prisms
223: the prisms
224: the four prisms
Embodiment
Please refer to Fig. 2, it shows the imaging device synoptic diagram according to preferred embodiment of the present invention.Imaging device 200 comprises image sensor 210 and prism group 220, image sensor 210 for example is Charged Coupled Device (Charge Coupling Device, CCD), CMOS (Complementary Metal-Oxide Semiconductor, optical sensor that CMOS) or arbitrarily can light sensing brightness.Prism group 220 to image sensor 210, and comprises first prism 221 and second prism 222 in order to guiding imaging beam I.Be that to be arranged between second prism 222 and the image sensor 210 with first prism 221 be that example explains among Fig. 2.First prism 221 and second prism 222 for example are prism wedge, and the drift angle direction of first prism 221 and second prism 222 differ 180 the degree, shown in two dotted arrows of Fig. 2.Thus, can avoid producing chromatic dispersion via the imaging beam I of first prism 221 and second prism 222.
As for how utilizing the relative translation between prism in the prism group 220, image in zones of different on image sensor 210 sensing face with guiding imaging beam I, lift two examples now and be described as follows, but technology of the present invention is not limited thereto.
Example one
In example one, be to be that the linear array sensor is that example explains with image sensor 210.At this moment, imaging device 200 for example is applied in the general scanner, and scanner also comprises the camera lens (as lens group) in order to focal imaging light beam I.And prism group 220 can be arranged between camera lens and the image sensor 210, or camera lens is arranged between prism group 220 and the image sensor 210.In example one, be that being arranged between camera lens and the image sensor 210 with guiding with prism group 220 is that example explains through the imaging beam I of lens focus.
Please refer to Fig. 3, it shows according to the two prisms 221 of example one of the present invention and 222 relative translation synoptic diagram.Wherein, Fig. 3 omits the diagram and the label of camera lens, and directions X is the direction that passes paper.As shown in Figure 3, image sensor 210 is positioned at the X-Z plane and towards-Y direction along the setting of Z direction and sensing face, and to be arranged between second prism 222 and the image sensor 210 with first prism 221 equally be that example explains.At this moment, second prism 222 can 221 translations of relative first prism between primary importance P1 and second place P2, as among Fig. 3 along shown in the four-headed arrow a of Y coordinate axis.Thus, when second prism, 222 relative first prisms 221 are positioned at primary importance P1, image in the first area A1 of image sensor 210 via the imaging beam I of first prism 221 and second prism 222; And when second prism, 222 relative first prisms 221 move to second place P2, image in the second area A2 of image sensor 210 via the imaging beam I of first prism 221 and second prism 222.That is, only need by between the two prisms 221 and 222 along the relative translation of Y coordinate axis, can guide imaging beam I and image on the image sensor 210 zones of different along the Z direction.At this moment, for example use the translation of meticulous control second prism 222 of piezoelectric, make that the spacing of first area A1 and second area A2 is half of light sensing spot size in the image sensor 210, can reach the effect that resolution increases twice.
Please refer to Fig. 4, it shows according to the prism translation of example one of the present invention and image sensor exposure time series figure.As shown in Figure 4, second prism 222 is to begin the translation from primary importance P1 from time point T1, and moves to stable second place P2 before time point T2.Between the time point T2 to T3, when promptly imaging light beam I imaged in second area A2, image sensor 210 carried out the exposing operation first time, to convert the light signal to electric signal.After treating that exposing operation is finished for the first time, second prism 222 begins the translation from second place P2 from time point T3, and moves to stable primary importance P1 before time point T4.Between the time point T4 to T5, when promptly imaging light beam I imaged in first area A1, image sensor 210 carried out the exposing operation second time.After the electric signal that the double exposure operation is changed receives processing by the next stage circuit, can increase the resolution of pick-up image.Certainly, the description of Fig. 4 only is a kind of possible exposure time series, and the double exposure sequence of operation of same sweep trace also can optionally be adjusted, and also can do the adjustment on the order between exposing operation and the translation.
In addition, when imaging beam I incident first prism 221 and second prism 222, favour the normal K1 of first prism, 221 incidence surfaces and the normal K2 of second prism, 222 incidence surfaces respectively, as shown in Figure 3.When for example avoiding imaging beam I incident second prism 222 by this, the reflected light that produces a part of ratio is penetrated back camera lens along optical axis and is caused interference.When imaging beam I outgoing first prism 221 and second prism 222, also favour the normal K1 ' of first prism, 221 exiting surfaces and the normal K2 ' of second prism, 222 exiting surfaces respectively, as shown in Figure 3.When for example avoiding imaging beam I incident first prism 221 by this, produce reflected light reflected back second prism 222 of a part of ratio, cause interference.Between other prism, reach prism and 210 of image sensors and also can adopt this kind design,, reach preferable imaging effect to reduce the reflection interference between each optical module on the optical axis.Wherein, the imaging beam I that is preferably incident second prism 222 is in fact perpendicular to the drift angle direction plane of second prism 222, i.e. the residing X-Z of the drift angle direction plane of second prism 222.
When as long as 222 translations of relative first prism 221 between primary importance P1 and second place P2 of second prism have perpendicular to the displacement component of the drift angle direction plane of first prism 221 or second prism 222, can there be as shown in Figure 3 guiding imaging beam I to image on the image sensor 210 along the effect of the zones of different of Z direction.Second prism, 222 translations of relative first prism 221 between primary importance P1 and second place P2 among Fig. 3 shown in the arrow a, i.e. translation on the Y coordinate axis in Fig. 3 only has the displacement component perpendicular to the drift angle direction plane of first prism 221 or second prism 222.
Please refer to Fig. 5 A, it shows another relative translation synoptic diagram according to the two prisms 221 of example one of the present invention and 222.Fig. 5 A and Fig. 3 difference are that first prism 221 and second prism 222 fit, and second prism 222 along 221 translations of relative first prism of binding face between primary importance P1 ' and second place P2 ', shown in the four-headed arrow a ' of Fig. 5 A.Can make the process control of second prism 222 when translation comparatively stable on the one hand, 222 translations of relative first prism 221 between primary importance P1 ' and second place P2 ' of second prism have the displacement component of the drift angle direction that is parallel to first prism 221 or second prism 222 on the other hand.In addition, in Fig. 5 A, 222 translations of relative this first prism 221 between primary importance P1 ' and second place P2 ' of second prism more are parallel to a side of second prism 222.Because the displacement component of directions X does not obviously influence the skew of light path.In addition, when imaging beam I incident first prism 221 and second prism 222, favour the normal K1 of first prism, 221 incidence surfaces and the normal K2 of second prism, 222 incidence surfaces equally respectively.The reflection interference on reducing optical axis between each optical module, also for adapting to the consideration that two prisms is fitted.This moment, first prism 221 and second prism 222 that fit were equivalent to a parallel transparent, determined for the deviation effect of imaging beam I thickness and the refractive index by incident angle and parallel transparent.And promptly the change effect of thickness of parallel transparent of the relative translation between the two prisms of fitting.
Thus, when second prism, 222 relative first prisms 221 are positioned at primary importance P1 ', image in the first area A1 ' of image sensor 210 via the imaging beam I of first prism 221 and second prism 222; And when second prism, 222 relative first prisms 221 are positioned at second place P2 ', image in the second area A2 ' of image sensor 210 via the imaging beam I of first prism 221 and second prism 222.That is, by the relative translation between the two prisms of fitting, can guide imaging beam I and image on the image sensor 210 zones of different along the Z direction.At this moment, for example also can use the translation of meticulous control second prism 222 of piezoelectric, make that the spacing of first area A1 ' and second area A2 ' is half of light sensing spot size in the image sensor 210, can reach the effect that resolution increases twice.
Please refer to Fig. 5 B, it shows the relative translation synoptic diagram again according to the two prisms 221 of example one of the present invention and 222.Be that with Fig. 5 A difference the two prisms 221 and 222 of Fig. 5 B is not fitted.Shown in Fig. 5 B, as long as 222 translations of relative first prism 221 between primary importance P1 ' and second place P2 ' of second prism have the displacement component of the drift angle direction that is parallel to first prism 221 or second prism 222, equally also just like the effect that is adjusted to the picture regional location of Fig. 5 A.
Example two
In example two, be to be that the face sensor array is that example explains with image sensor 210.At this moment, imaging device 200 for example is applied in the general digital camera, and digital camera also comprises in order to the camera lens of focal imaging light beam I (as lens group).In example two, being arranged between camera lens and the image sensor 210 with prism group 220 equally is that example explains.
Please refer to Fig. 6, it shows according to the relative translation synoptic diagram between the prism of example two of the present invention.Adopt among Fig. 6 with Fig. 3 in identical X-Y-Z direction.At this moment, the Z direction is the direction that passes paper, and the sensing face of image sensor 210 also is positioned on the X-Z plane and towards-Y direction.In addition, be that prism group 220 also comprises prism 223 and the 4th prism 224, as shown in Figure 6 with Fig. 3 difference.Prism 223 and the 4th prism 224 can use the prism wedge as first prism 221 and second prism 222 equally, and the drift angle direction of prism 223 and the 4th prism 224 also differs 180 degree, is similarly the imaging beam I that avoids via prism 223 and the 4th prism 224 and produces chromatic dispersion.In addition, be to be arranged between prism 223 and the image sensor 210, and prism 223 and the 4th prism 224 are arranged at and are the example explanation between first prism 221 and the image sensor 210 with the 4th prism 224.
In example one, the relative translation of first prism 221 and second prism 222 is to have guiding imaging beam I to image on the image sensor 210 along the effect of the zones of different of Z direction, promptly reaches the control effect of one dimension (Z direction).When image sensor 210 for example is face sensor array (XZ plane), prism 223 and the 4th prism 224 be in order to increasing the control effect of extra one dimension (directions X), makes imaging beam I via prism group 220 can image on the image sensor 210 zones of different along the X-Z plane.By the composition principle of vector as can be known, when the drift angle direction of second prism 222 and the 4th prism 224 is pressed from both sides a predetermined angle, and predetermined angle can reach the control effect of two dimension when spending greater than 0 degree and less than 180.In example two, the drift angle direction sensing+Z axle of second prism 222 and the drift angle direction sensing+X-axis of the 4th prism 224, therefore, this predetermined angle is essentially 90 degree, as shown in Figure 6.
At this moment, the 4th prism 224 can relative prism 223 translations between the 3rd position P3 and the 4th position P4, shown in the four-headed arrow b of Fig. 6.Thus, when the 4th prism 224 relative prisms 223 are positioned at the 3rd position P3, image in the 3rd regional A3 of image sensor 210 via the imaging beam I of prism 223 and the 4th prism 224; And when the 4th prism 224 relative prisms 223 are positioned at the 4th position P4, image in the 4th regional A4 of image sensor 210 via the imaging beam I of prism 223 and the 4th prism 224.That is, by the relative translation of 224 on prism 223 and the 4th prism, can guide imaging beam I and image on the image sensor 210 zones of different along directions X.At this moment, for example come the translation of meticulous control the 4th prism 224 with piezoelectric, make that the spacing of the 3rd regional A3 and the 4th regional A4 is half of light sensing spot size in the image sensor 210, first prism 221 and 222 relative translations that also give same scale of second prism can reach two dimension control and make resolution increase by four times effect.
Wherein, the described herein the 3rd regional A3 is relative existence with the 4th regional A4, is not to refer in particular to certain fixing two zone.The 3rd regional A3 and the Z direction position of the 4th regional A4 on image sensor 210 when the 3rd regional A3 when for example, second prism, 222 relative first prisms 221 are positioned at primary importance P1 is positioned at second place P2 with the 4th regional A4 with second prism, 222 relative first prisms 221 are different.Equally, Ci Shi first area A1 also is relative existence with second area A2.When four prisms 221,222,223 and 224 relative displacements are described below more with reference to the accompanying drawings, first to fourth zone to change.
Please refer to Fig. 7, it shows the imaging region synoptic diagram according to image sensor among Fig. 6 210.In Fig. 7 ,+Y direction penetrates paper, and from the above, by the relative displacement of four prisms 221,222,223 and 224, the institute of imaging beam I on image sensor 210 might fall within a scope S by imaging region haply.The shape of scope S is relevant with the folded predetermined angle of the drift angle direction of second prism 222 and the 4th prism 224.In example two, predetermined angle is 90 when spending, and scope S is essentially a rectangle.
In addition, as shown in Figure 7, when second prism 222 and the 4th prism 224 laid respectively at second place P2 and the 4th position P4, imaging beam I imaged in area B 1.When second prism 222 and the 4th prism 224 laid respectively at second place P2 and the 3rd position P3, imaging beam I imaged in area B 2.When second prism 222 and the 4th prism 224 laid respectively at primary importance P1 and the 3rd position P3, imaging beam I imaged in area B 3.When second prism 222 and the 4th prism 224 laid respectively at primary importance P1 and the 4th position P4, imaging beam I imaged in area B 4.
Thus, utilize the translation between primary importance P1 and second place P2 of control second prism 222, imaging between first area A1 and second area A2 of imaging beam I moved back and forth, shown in two-way arrow c2 and c4 among Fig. 7, first area A1 and second area A2 in Fig. 7 corresponding to area B 3 and B2 or B4 and B1.On the other hand, control the translation between the 3rd position P3 and the 4th position P4 of the 4th prism 224, imaging between the 3rd regional A3 and the 4th regional A4 of imaging beam I moved back and forth, shown in two-way arrow c1 and c3 among Fig. 7, the 3rd regional A3 and the 4th regional A4 in Fig. 7 corresponding to area B 2 and B1 or B3 and B4.
Please refer to Fig. 8, it shows according to the prism translation of example two of the present invention and image sensor exposure time series figure.Second prism 222 begins the translation from primary importance P1 from time point T1, and moves to stable second place P2 before time point T2.The 4th prism 224 is to be positioned at the 4th position P4 between time point T1 to T3.Between the time point T2 to T3, when promptly imaging light beam I imaged in area B 1, image sensor 210 carried out the exposing operation first time, to convert the light signal to electric signal.After treating that exposing operation is finished for the first time, the 4th prism 224 begins from the 4th position P4 translation from time point T3, and moves to the 3rd stable position P3 before time point T4.Between the time point T4 to T5, when promptly imaging light beam I imaged in area B 2, image sensor 210 carried out the exposing operation second time.After treating that exposing operation is finished for the second time, second prism 222 begins the translation from second place P2 from time point T5, and moves to stable primary importance P1 before time point T6.Between the time point T6 to T7, when promptly imaging light beam I imaged in area B 3, image sensor 210 carried out exposing operation for the third time.After treating that exposing operation is finished for the third time, the 4th prism 224 begins from the 3rd position P3 translation from time point T7, and moves to the 4th stable position P4 before time point T8.Between the time point T8 to T9, when promptly imaging light beam I imaged in area B 4, image sensor 210 carried out exposing operation the 4th time.The electric signal that four exposing operation are changed by the next stage circuit receive handle after, can increase the resolution of four times of pick-up images.Certainly, the description of Fig. 8 only is a kind of possible exposure time series, and four times the exposing operation order also can optionally be adjusted, and also can do the adjustment on the order between exposing operation and the translation.
In addition, when imaging beam I incident prism 223 and the 4th prism 224, also favour the normal K3 of prism 223 incidence surfaces and the normal K4 of the 4th prism 224 incidence surfaces respectively, as shown in Figure 6.When imaging beam I outgoing prism 223 and the 4th prism 224, also favour the normal K3 ' of prism 223 exiting surfaces and the normal K4 ' of the 4th prism 224 exiting surfaces respectively.That is, reaching 210 of prism and image sensors between the prism, the reflection interference between each optical module on the aforesaid optical axis is avoided in design by this, reaches preferable imaging effect.Wherein, the imaging beam I of incident prism 223 is in fact perpendicular to the drift angle direction plane of prism 223, i.e. the residing X-Z of the drift angle direction plane of prism 223.
Certainly, those skilled in the art can also understand, as long as when the translation of the 4th prism 224 relative prisms 223 between the 3rd position P3 and the 4th position P4 comprises perpendicular to the displacement component of the drift angle direction plane of prism 223 or the 4th prism 224, when perhaps having the displacement component of the drift angle direction that is parallel to prism 223 or the 4th prism 224, can there be as shown in Figure 6 guiding imaging beam I to image on the image sensor 210 along the effect of the zones of different of directions X.The translation of the 4th prism 224 relative prisms 223 between the 3rd position P3 and the 4th position P4 among Fig. 6 shown in the arrow b, promptly translation on the Y coordinate axis in Fig. 6 only has the displacement component perpendicular to the drift angle direction plane of prism 223 or the 4th prism 224.
Please refer to Fig. 9, it shows according to another relative translation synoptic diagram between the prism of example two of the present invention.Omit the icon and the label of imaging beam I and image sensor 210 among Fig. 9.In Fig. 9, first prism 221 and second prism 222 fit as shown in Fig. 5 A, second prism 222 along 221 translations of relative first prism of binding face between primary importance P1 ' and second place P2 ', shown in arrow a '.In addition, Fig. 9 and Fig. 6 difference are that prism 223 and the 4th prism 224 fit, and the 4th prism 224 along relative prism 223 translations of binding face between the 3rd position P3 ' and the 4th position P4 ', shown in arrow b '.Make the process control of the 4th prism 224 when translation comparatively stable on the one hand equally, the translation of the 4th prism 224 relative prisms 223 between the 3rd position P3 ' and the 4th position P4 ' has the displacement component of the drift angle direction that is parallel to prism 223 or the 4th prism 224 on the other hand.In addition, in Fig. 9, the translation of the 4th prism 224 relative prisms 223 between the 3rd position P3 ' and the 4th position P4 ' more is parallel to a side of the 4th prism 224.
Equally, when imaging beam I incident prism 223 and the 4th prism 224, also favour the normal K3 of prism 223 incidence surfaces and the normal K4 of the 4th prism 224 incidence surfaces respectively.The reflection interference on reducing optical axis between each optical module, also be similarly the consideration when adapting to aforementioned two prisms and fitting.
Thus, relative translation by 222 on first prism 221 of fitting and second prism, and the relative translation by 224 on the prism 223 of fitting and the 4th prism, also can have equally as shown in Figure 7, guiding imaging beam I images on the sensing face of image sensor 210 zones of different along the X-Z plane.At this moment, for example come the translation yardstick of meticulous control second prism 222 and the 4th prism 224 with piezoelectric, can reach resolution equally increases by four times effect.Certainly, also can design two prisms 221 and 222 applyings respectively and whether whether reach two prisms 223 and 224 applyings.
Those skilled in the art can also understand, though being example with the prism wedge, each prism in example one and the example two explains, but obviously can optionally adopt general various prism to reach same effect, and the side view of prism wedge can adopt various triangles with the consideration on going up or use in response to manufacturing equally.Moreover for example first prism 221 in the example two and prism 223 also can fit after via suitable configuration, that is first prism 221 and prism 223 be one of the forming, or first prism 221 and prism 223 are combined into a pairing mirror.In addition, improve the precision of relative displacement between the control prism, for example make second prism 222 can 221 translations of relative first prism between three positions or more than, also can more improve resolution.
Certainly, do translation by first prism 221 with respect to second prism 222, prism 223 is done translation with respect to the 4th prism 224, or first prism 221 and second prism 222 be arranged between prism 223 and the 4th prism 224 and the image sensor 210, the control effect of aforesaid one dimension or two dimension is equally all arranged.This moment imaging beam I and each prism incidence surface normal tilt relationship also can with adjustment.As long as imaging device 200 is by the design of the relative translation between prism in its prism group 220, guiding imaging beam I images in the zones of different of image sensor 210 and reaches the purpose that increases resolution, neither disengaging technical scope of the present invention.
The imaging device of the resolution adjusted that the above embodiment of the present invention is disclosed, by the design of the relative translation between prism in its prism group, the guiding imaging beam images in the zones of different of image sensor, reaches the purpose that increases resolution.Avoid pick-up image and treat also need not increasing the sensor groups quantity of image sensor, and being applied to the face sensor array outside the error problem between pick-up image.In addition, more than be that example describes among each embodiment with the image information that obtains one-period, in the practical application, being used for that multiply periodic image obtains there is no can not.
In sum; though the present invention discloses as above with a preferred embodiment; right its is not in order to limit the present invention; those skilled in the art can be used for a variety of modifications and variations under the premise without departing from the spirit and scope of the present invention, so protection scope of the present invention is as the criterion with claim of the present invention.
Claims (24)
1. the imaging device that can adjust resolution comprises:
One image sensor; And
One prism group, in order to guide an imaging beam to this image sensor, this prism group comprises:
One first prism; And
One second prism, relatively this first prism translation between a primary importance and a second place, and the drift angle direction of this first prism and this second prism differ 180 the degree;
Wherein, when relative this first prism of this second prism is positioned at this primary importance, image in a first area of this image sensor via this imaging beam of this first prism and this second prism, when relative this first prism of this second prism is positioned at this second place, image in a second area of this image sensor via this imaging beam of this first prism and this second prism.
2. imaging device as claimed in claim 1 also comprises a camera lens, and wherein this prism group is arranged between this camera lens and this image sensor.
3. imaging device as claimed in claim 1 also comprises a camera lens, and wherein this camera lens is arranged between this prism group and this image sensor.
4. imaging device as claimed in claim 1, wherein this image sensor is a linear array sensor.
5. imaging device as claimed in claim 1, wherein this image sensor carries out exposing operation in this second prism when this first prism moves to this primary importance and this second place relatively.
6. imaging device as claimed in claim 1, wherein this first prism and this second prism are prism wedge.
7. imaging device as claimed in claim 1 wherein when this first prism of this imaging beam incident and this second prism, favours the normal of this first prism incidence surface and the normal of this second prism incidence surface respectively.
8. imaging device as claimed in claim 7, wherein this imaging beam of this second prism of incident is in fact perpendicular to the drift angle direction plane of this second prism.
9. imaging device as claimed in claim 1, wherein the relative translation of this first prism between this primary importance and this second place of this second prism has the displacement component perpendicular to the drift angle direction plane of this first prism or this second prism.
10. imaging device as claimed in claim 1, wherein the relative translation of this first prism between this primary importance and this second place of this second prism has the displacement component of the drift angle direction that is parallel to this first prism or this second prism.
11. imaging device as claimed in claim 10, wherein the relative translation of this first prism between this primary importance and this second place of this second prism is parallel to a side of this second prism.
12. imaging device as claimed in claim 11, wherein this first prism and this second prism fit, and when this first prism of this imaging beam incident and this second prism, favour the normal of this first prism incidence surface and the normal of this second prism incidence surface respectively.
13. imaging device as claimed in claim 1, wherein this image sensor is a sensor array.
14. imaging device as claimed in claim 13, wherein this prism group also comprises a prism and one the 4th prism, relative this prism translation of the 4th prism is between one the 3rd position and one the 4th position, and the drift angle direction of this prism and the 4th prism differs 180 degree;
Wherein, when relative this prism of the 4th prism is positioned at the 3rd position, image in one the 3rd zone of this image sensor via this imaging beam of this prism and the 4th prism, when relative this prism of the 4th prism is positioned at the 4th position, image in one the 4th zone of this image sensor via this imaging beam of this prism and the 4th prism;
Wherein, the drift angle direction of this second prism and the 4th prism is pressed from both sides a predetermined angle, and this predetermined angle is greater than 0 degree and less than 180 degree.
15. imaging device as claimed in claim 14, wherein this predetermined angle is essentially 90 degree.
16. imaging device as claimed in claim 14, wherein this image sensor moves to this primary importance and this second place in relative this first prism of this second prism, and when relative this prism of the 4th prism moves to the 3rd position and the 4th position, carry out exposing operation.
17. imaging device as claimed in claim 14, wherein this prism and the 4th prism are prism wedge.
18. imaging device as claimed in claim 14, wherein this imaging beam of this prism of incident is in fact perpendicular to the drift angle direction plane of this prism.
19. imaging device as claimed in claim 14, wherein this first prism and this prism are one of the forming.
20. imaging device as claimed in claim 14, wherein this first prism and this prism are combined into a pairing mirror.
21. imaging device as claimed in claim 14, wherein the relative translation of this prism between the 3rd position and the 4th position of the 4th prism has the displacement component perpendicular to the drift angle direction plane of this prism or the 4th prism.
22. imaging device as claimed in claim 14, wherein the relative translation of this prism between the 3rd position and the 4th position of the 4th prism has the displacement component of the drift angle direction that is parallel to this prism or the 4th prism.
23. imaging device as claimed in claim 21, wherein the relative translation of this prism between the 3rd position and the 4th position of the 4th prism is parallel to a side of the 4th prism.
24. imaging device as claimed in claim 23, wherein this first prism and this second prism fit, this prism and the 4th prism fit, and when this first prism of this imaging beam incident and this second prism, favour the normal of this first prism incidence surface and the normal of this second prism incidence surface respectively, when this this prism of imaging beam incident and the 4th prism, favour the normal of this prism incidence surface and the normal of the 4th prism incidence surface respectively.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNA2006100753035A CN101055343A (en) | 2006-04-12 | 2006-04-12 | Resolution-adjustable imaging device |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNA2006100753035A CN101055343A (en) | 2006-04-12 | 2006-04-12 | Resolution-adjustable imaging device |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN101055343A true CN101055343A (en) | 2007-10-17 |
Family
ID=38795268
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CNA2006100753035A Pending CN101055343A (en) | 2006-04-12 | 2006-04-12 | Resolution-adjustable imaging device |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN101055343A (en) |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109597275A (en) * | 2018-11-29 | 2019-04-09 | 同济大学 | A kind of axial Distributed Three-dimensional imaging method based on double-wedge prism |
| CN110186654A (en) * | 2019-05-29 | 2019-08-30 | 深圳市慧视智图科技有限公司 | A kind of longitudinal resolution test device |
| CN113890964A (en) * | 2020-07-03 | 2022-01-04 | 北京小米移动软件有限公司 | Optical processing device, camera module, electronic apparatus, photographing method, and storage medium |
-
2006
- 2006-04-12 CN CNA2006100753035A patent/CN101055343A/en active Pending
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109597275A (en) * | 2018-11-29 | 2019-04-09 | 同济大学 | A kind of axial Distributed Three-dimensional imaging method based on double-wedge prism |
| CN110186654A (en) * | 2019-05-29 | 2019-08-30 | 深圳市慧视智图科技有限公司 | A kind of longitudinal resolution test device |
| CN113890964A (en) * | 2020-07-03 | 2022-01-04 | 北京小米移动软件有限公司 | Optical processing device, camera module, electronic apparatus, photographing method, and storage medium |
| CN113890964B (en) * | 2020-07-03 | 2023-12-01 | 北京小米移动软件有限公司 | Light processing device, camera module, electronic device, photographing method, and storage medium |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN102625034A (en) | Image pickup unit | |
| CN1758439A (en) | Imaging apparatus and arranging method for the same | |
| CN1761282A (en) | The multiplying power variation of image read-out and this image read-out | |
| CN101055343A (en) | Resolution-adjustable imaging device | |
| JP4913089B2 (en) | Image reading device | |
| US10911629B2 (en) | Contact image sensor and image scanning device | |
| TWI274191B (en) | Imaging apparatus with resolution adjustability | |
| CN1893569A (en) | Mobilization structure of solid video camera appliance, image reading unit and image forming device | |
| CN1917591A (en) | Image process unit | |
| TWI411289B (en) | U-shape optical path image scanning method and scanning module thereof | |
| US8018627B2 (en) | Shared image scanning method and picture scanner thereof | |
| CN2490597Y (en) | Reflecting lens supporting structure | |
| CN1806203A (en) | Image blur compensation device | |
| CN1143145C (en) | Optical waveguide reduction optical image sensor | |
| CN100461816C (en) | Contact image scanner with multi focallength and multi resolution | |
| CN1735123A (en) | Contact type image scanner with multi-focus and multi resolution ratio | |
| CN1391124A (en) | Optical system | |
| JP2011176524A (en) | Image reading device | |
| CN2624549Y (en) | Transparency scanner | |
| CN1097802C (en) | Physical parameter detecting method and equipment for scanned body | |
| CN2560965Y (en) | Scanning imaging apparatus to use multiple linear image sensor array | |
| CN2632697Y (en) | Lens bearing module set | |
| CN2487037Y (en) | Multi resolution scanning device | |
| JP3299402B2 (en) | Reader | |
| CN2670974Y (en) | Optical mechanism for increasing scanning optical distance, paper feeding mechanism and service apparatus |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C06 | Publication | ||
| PB01 | Publication | ||
| C10 | Entry into substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| C02 | Deemed withdrawal of patent application after publication (patent law 2001) | ||
| WD01 | Invention patent application deemed withdrawn after publication |