CN207396842U - Optical device and the imaging system including the optical device - Google Patents
Optical device and the imaging system including the optical device Download PDFInfo
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- CN207396842U CN207396842U CN201721086376.4U CN201721086376U CN207396842U CN 207396842 U CN207396842 U CN 207396842U CN 201721086376 U CN201721086376 U CN 201721086376U CN 207396842 U CN207396842 U CN 207396842U
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Abstract
Disclose a kind of optical device and the imaging system including the optical device.The optical device includes：Housing, the housing include at least the first inner surface and the second inner surface, and first inner surface and second inner surface extend in a first direction and parallel to each other；First speculum is arranged on first inner surface and with the first reflectivity；With the second speculum, it is arranged on second inner surface and with first reflectivity.It thus provides the optical device with more diversified optical characteristics.
Description
Technical field
The utility model relates in general to optical imaging field, and it particularly relates to a kind of optical device and including
The imaging system of the optical device.
Background technology
With the development of imaging technique, optical device and mirror with focal length characteristic, wide-angle characteristic, microspur characteristic etc.
The combination of head, obtains the favor of numerous consumers, therefore market significantly increases the demand of the optical device with various optical characteristics
Add.
However, the optical characteristics that optical device currently on the market is capable of providing is also than relatively limited, it is main still to concentrate
In the adjustment for focal length variations and field range, but for other optical characteristics there is no too many research, this causes existing
Optical device function it is relatively single.
Therefore, it is necessary to have the optical device of more diversified optical characteristics, for operations such as subsequent associated images.
The content of the invention
In order to solve the above-mentioned technical problem, it is proposed that the application.Embodiments herein provide a kind of optical device and
Imaging system including the optical device has more diversified optical characteristics.
According to the one side of the application, a kind of optical device is provided, the optical device includes：Housing at least wraps
The first inner surface and the second inner surface are included, first inner surface and second inner surface are extended in a first direction and put down each other
Row；First speculum is arranged on first inner surface and with the first reflectivity；With the second speculum, institute is arranged on
It states on the second inner surface and with first reflectivity.
According to one embodiment, the optical device further comprises fixed component, for fix the optical device with
Relative position relation between the camera lens of imaging device so that the centerline collineation of the center line of the housing and the camera lens.
According to one embodiment, first speculum and second speculum at least have a first size, and described the
One size causes first speculum and second speculum covers the visual field of the camera lens in a second direction respectively
A quarter, the second direction and the first direction are perpendicular to one another.
According to one embodiment, the housing further comprises the 3rd inner surface and the 4th inner surface, table in the described 3rd
Face and the 4th inner surface extend along the second direction and parallel to each other, first inner surface, the second inner surface, the 3rd
Inner surface and the 4th inner surface form rectangular shape.
According to one embodiment, the optical device further comprises：3rd speculum is arranged on the 3rd inner surface
Above and with the second reflectivity, second reflectivity is different from first reflectivity；With the 4th speculum, institute is arranged on
It states on the 4th inner surface and with second reflectivity.
According to one embodiment, the 3rd speculum and the 4th speculum at least have the second size, and described the
Two sizes cause the 3rd speculum and the 4th speculum to cover regarding for the camera lens in said first direction respectively
The a quarter of field.
According to one embodiment, first reflectivity is 66%, and second reflectivity is 33%.
According to one embodiment, first speculum includes the first plane mirror and is arranged at the table of first plane mirror
The first transmission film on face, and first transmission film has the first transmissivity, first transmissivity and the described first reflection
Rate is associated；Second for including the second plane mirror with second speculum and being arranged on the surface of second plane mirror is saturating
Film is penetrated, and second transmission film has first transmissivity.
According to one embodiment, the 3rd speculum includes the 3rd plane mirror and is arranged at the table of the 3rd plane mirror
The 3rd transmission film on face, and the 3rd transmission film has the second transmissivity, second transmissivity and the described second reflection
Rate is associated；The 4th for including fourth plane mirror with the 4th speculum and being arranged on the surface of the fourth plane mirror is saturating
Film is penetrated, and the 4th transmission film has second transmissivity.
According to one embodiment, first transmissivity isAnd second transmissivity is
According to one embodiment, the first direction corresponds to the length direction of the sensitive chip of the imaging device, and
The second direction corresponds to the width of the sensitive chip of the imaging device.
According to one embodiment, length of side h of the first size on the direction perpendicular to lens plane1Such as the following formula
It represents：
h1=d
Wherein, d is in the camera lens from first speculum and second speculum adjacent to one end of the camera lens
Center line on subpoint to the optical center of the camera lens distance；
Length of side L of the first size on the length direction parallel to sensitive chip such as the following formula represents：
Wherein, Y1It is visual angle of the imaging device on the length direction of the sensitive chip.
According to one embodiment, length of side h of second size on the direction perpendicular to lens plane2Such as the following formula
It represents：
h2=h1=d；
Length of side W of second size on the length direction parallel to sensitive chip such as the following formula represents：
Wherein, r is the length-width ratio of the sensitive chip of the imaging device.
According to one embodiment, the first direction corresponds to the width of the sensitive chip of the imaging device, and
The second direction corresponds to the length direction of the sensitive chip of the imaging device.
According to one embodiment, length of side h of the first size on the direction perpendicular to lens plane1Such as the following formula
It represents：
h1=d
Wherein, d is in the camera lens from first speculum and second speculum adjacent to one end of the camera lens
Center line on subpoint to the optical center of the camera lens distance；
Length of side W of the first size on the width parallel to sensitive chip such as the following formula represents：
Wherein, Y2It is visual angle of the imaging device on the width of the sensitive chip.
According to one embodiment, length of side h of second size on the direction perpendicular to lens plane2Such as the following formula
It represents：
h2=h1=d；
Length of side L of second size on the length direction parallel to sensitive chip such as the following formula represents：
L=W × r
Wherein, r is the length-width ratio of the sensitive chip of the imaging device.
According to one embodiment, the fixed component be arranged on the housing towards the first end of the camera lens and with institute
Camera lens is stated removably to couple.
According to one embodiment, in the case where the fixed component and the camera lens are coupled together, pass through the shell
The light of the body second end opposite with the first end into the housing will not be leaked to the camera lens by the first end
In addition.
According to the another aspect of the application, a kind of imaging system is provided, including：Optical device as described above；With into
As equipment, including camera lens.
According to one embodiment, further comprise：Driving part, with the optical device be mechanically connected, in response to
Receive the first trigger signal, the mobile optical device so that the imaging device without the help of the optical device and
Directly subject is imaged via the camera lens and in response to receiving the second trigger signal, the mobile optical device,
So that the imaging device is imaged subject via camera lens by means of the optical device.
According to one embodiment, the imaging device is monitoring camera.
Compared with prior art, using the optical device according to the embodiment of the present application and the imaging system including the optical device
System, can include housing, and the housing includes at least the first inner surface and the second inner surface, first inner surface and described the
Two inner surfaces extend in a first direction and parallel to each other；First speculum is arranged on first inner surface and with the
One reflectivity；With the second speculum, it is arranged on second inner surface and with first reflectivity.Therefore it provides
There is the optical device of more diversified optical characteristics, can subsequently coordinate be formed including having with the camera lens of imaging device
The single image of the multiple regions of different brightness.
Description of the drawings
The embodiment of the present application is described in more detail in conjunction with the accompanying drawings, the above-mentioned and other purposes of the application,
Feature and advantage will be apparent.Attached drawing is used for providing further understanding the embodiment of the present application, and forms explanation
A part for book for explaining the application together with the embodiment of the present application, does not form the limitation to the application.In the accompanying drawings,
Identical reference number typically represents same parts or step.
Fig. 1 illustrates the schematic diagrames of the optical device according to the embodiment of the present application；
Fig. 2 is the schematic diagram being fixed on according to the optical device of the embodiment of the present application on the camera lens of imaging device；
Fig. 3 is the schematic diagram of the visual field formed according to the optical device of the embodiment of the present application；
Fig. 4 is the schematic diagram compared with camera lens according to the visual field that the optical device of the embodiment of the present application is formed；
Fig. 5 is the schematic diagram according to the speculum with transmission film of the embodiment of the present application；
Fig. 6 is the imaging process schematic diagram according to the embodiment of the present application；
Fig. 7 A and Fig. 7 B are diagrams to be shown according to the method for determination of mirror size in the optical device of the embodiment of the present application
It is intended to；
Fig. 8 is the schematic diagram according to the imaging effect of the optical device of the embodiment of the present application；
Fig. 9 is the schematic diagram according to the imaging system of the embodiment of the present application.
Specific embodiment
In the following, example embodiment according to the application will be described in detail by referring to the drawings.Obviously, described embodiment is only
Only it is the part of the embodiment of the application rather than the whole embodiments of the application, it should be appreciated that the application is from described herein
The limitation of example embodiment.
Application general introduction
In shooting process, in addition to changing focal length and adjustment field range, high dynamic range (HDR) shooting is present
It has been be used widely that, be used to compensate for the limited dynamic range of most of digital image-forming sensors.The dynamic model of photo
The brightness range referred between most dark color and most bright color is enclosed, can also represent tone range together.Specifically, it is bright
In outdoor scene under bright daylight, the brightness range of shadow region to most bright highlight regions is considerably beyond the capture of digital camera
Ability.If the exposure settings deviation dash area of camera, highlight regions will be excessively quick-fried, becomes the pure white of no details.Instead
For crossing, if the exposure settings deviation highlight regions of camera, dash area will become black color lump.
HDR photos then incorporate the multiple pictures under same scene, and such as 2 or more, every photo is using different
Exposure is set.It can not be realized by the dark portion details and under exposed highlights details that synthesize overexposure to create by single exposure
Dynamic range.However, in the prior art, the HDR being achieved in that is not real-time, since multiexposure, multiple exposure being needed to synthesize, is clapped
The ghost of different exposure time is had when taking the photograph moving object (or camera/capture apparatus is moving in itself) (if because HDR is to clap
A dry photo is synthesized, if so the object of shooting moves between first and second camera lens, is finally synthesized
Effect can cause to occur motion parts obscure or ghost image), and have no idea for video recording.
Therefore, real-time HDR is developed, principle is same as above, and is passed by sensor devices complementary metal oxide semiconductor (CMOS)
The image-signal processor (ISP) of sensor synthesizes multiple photos with different exposures.Because aggregate velocity is fast, user is come
Say can approximate instant preview HDR synthesis photo.The technology has used in many mobile phones at present, and still, it is actually
Can be not simply real captured in real-time with instant preview composograph for user class experience.
In view of the above-mentioned problems, the basic conception of the application is to propose a kind of optical device and the imaging including the optical device
System can form the single image for including the multiple regions with different brightness, wherein forming tool by the opening of housing
There are the regional transmission of high brightness, and the first speculum and with the first reflectivity by being arranged on the inner surface of housing
Two-mirror forms the reflector space with low-light level, so as to include the phase with different brightness simultaneously in single image
With the multiple regions of subject, in order to subsequent image processing.
It should be noted that the above-mentioned basic conception of the application can be applied not only to the HDR functions of imaging device, may be used also
To be applied to other application scene, as long as the single image that application scenarios needs include the multiple regions with different brightness is
It can.For example, the smaller binocular stereo imaging of baseline can be obtained by speculum, then, which can match somebody with somebody
The purpose of algorithm properly worked as is to realize depth of field calculating.
After the basic principle of the application is described, carry out the specific various non-limits for introducing the application below with reference to the accompanying drawings
Property embodiment processed.
Exemplary optics device
Fig. 1 illustrates the schematic diagrames of the optical device according to the embodiment of the present application.As shown in Figure 1, implemented according to the application
The optical device 100 of example includes housing 110, which includes at least the first inner surface 111 and the second inner surface 112, and the
One inner surface 111 and the second inner surface 112 extend in a first direction and parallel to each other.For example, in the first inner surface 111 and second
It surface 112 can in the horizontal direction or vertical direction extension, and perpendicular to depth direction horizontally and vertically
In have certain scale.
First speculum is further comprised according to the optical device 100 of the embodiment of the present application, is arranged on the first inner surface 111
Above and with the first reflectivity；With the second speculum, it is arranged on the second inner surface 112 and with first reflectivity.
For example, the housing 110 can have a first end and a second end.Subject is carried out in optical device 100 using
When imaging or viewing, first end can be towards subject towards camera lens or human eye, second end.
In this way, according to the optical device of the embodiment of the present application by the way that second end is aligned subject, it can be in first end shape
Into the transmission image of the subject, and further by means of the first speculum being arranged on the first inner surface 111 and setting
The second speculum on the second inner surface 112 can form two reflected images of the subject in first end, so as to follow-up
It can be combined with transmission image, the single image for including the multiple regions with different brightness be formed, in order to image procossing (example
Such as, synthesize HDR image or detected for parallax).
Further, as shown in Figure 1, housing 110 further comprises the 3rd inner surface 113 and the 4th inner surface 114, the 3rd
113 and the 4th inner surface 114 of inner surface extends and parallel to each other in a second direction, and first direction and the second direction are each other
Vertically.For example, the 3rd inner surface 113 and the 4th inner surface 114 can vertically or horizontal direction extension, and vertical
There is certain scale in depth direction both vertically and horizontally.First inner surface 111, the second inner surface
112nd, the 3rd inner surface 113 and the 4th inner surface 114 may be constructed rectangular shape.That is, according to the embodiment of the present application
Four inner surfaces 111,112,113 and 114 of housing 110 of optical device 100 be respectively rectangular shape, and with housing 110
Center line for axis distinguish face it is symmetrical.
For example, in practice, which can be formed as having long square tube shape, as shown in Figure 1, the long square tube shape
The cross sectional shape of the housing of shape is also rectangle.It here, will be in four although it will be understood by those skilled in the art that in Fig. 1
The shape on surface is accordingly to be regarded as rectangle, but its shape can also be square.For example, the first inner surface parallel to each other and
The shape of two inner surfaces can be square, alternatively, the 3rd inner surface parallel to each other and the shape of the 4th inner surface can be
Square or the first inner surface to the 4th inner surface are square.Correspondingly, according to the shape of four inner surfaces, the length
The section of the housing of square tube shape can also be rectangle or square.For example, the length of four inner surfaces along the first direction
Degree can be equal to each other with length in a second direction, so that the section of the housing of the long square tube shape is square.Into
One step, which can be square, so that the section of the housing of the long square tube shape is square.Cause
This, in the optical device 100 according to the embodiment of the present application, the long square tube shape of the housing 110 is likewise covered by the housing 110 and is
The situation of square cylinder shape.In addition, in embodiments herein, four inner surfaces for only requiring the housing 110 are in cuboid
Shape or square shape, and its outer surface depends on different industrial designs, can be any shape, such as cylinder
Shape, prismatic, taper etc..
Fixed component is further comprised according to the optical device of the embodiment of the present application, for fixing the optical device and imaging
Position relationship between the camera lens of equipment so that the center line of housing and the centerline collineation of camera lens.
For example, the fixed component can be formed in any mechanical structure such as the screw thread of first end opening, hinge, it is used for
Mechanical structure corresponding on camera lens forms mechanical connection.In addition, the fixed component can also be independently of optical device and mirror
The mechanical structure of head, such as individual fixture or stent etc., as long as it can be used to optical device is accurately located at camera lens
It is upper.
Fig. 2 is the schematic diagram being fixed on according to the optical device of the embodiment of the present application on the camera lens of imaging device.Such as Fig. 2 institutes
Show, in order to ensure to pass through by the transmission image of the housing of the optical device and the reflected image formed by the speculum on inner surface
It is imaged by camera lens by imaging device, the center line of the housing of optical device and the centerline collineation of camera lens, so that optics device
The housing of part and the alignment lens of imaging device.In this way, it can be located at what is be imaged by imaging device by the transmission image of housing
The center of single image, and two reflected images formed by two speculums on inner surface can respectively be located at set by imaging
The both sides of the single image of standby imaging.Also, it depending on the position that speculum is set, is formed by the speculum on inner surface anti-
Penetrating image can be located at by the both sides up and down of the single image of imaging device imaging or positioned at its left and right sides.
Also, as shown in Fig. 2, that is, should according to the housing of the optical device of the embodiment of the present application towards the first end of camera lens
The inner edge of housing substantially can have a preset distance with the plane of camera lens.It here, it will be understood by those skilled in the art that should
The inner edge of the housing of optical device can continue to the direction extension towards camera lens, for example, reaching and the planar registration of camera lens
Degree.In addition, the housing can further extend in the direction towards imaging device, then the part on the inside of lens plane is extended to
It substantially can not be by reflecting via lens imaging.Therefore, in the optical device according to the embodiment of the present application, if to obtain
The reflected image identical with transmission image then needs to be defined the size of shell inner surface upper reflector.
That is, in the optical device according to the embodiment of the present application, the first speculum and the second speculum have extremely
Few first size, and the first size causes the first speculum and the second speculum to cover regarding for camera lens in a second direction respectively
The a quarter of field.
As described above, when the first inner surface and the second inner surface extend along horizontal direction as shown in Figure 1, first is anti-
It penetrates mirror and the second speculum and is located at the upper inside surface 111 of housing and lower inner surface 112 respectively.In this case, via
The reflected image that first speculum and the second speculum are formed also is located at the upper side and lower side of transmission image.So in order to
The reflected image identical with transmission image is obtained, the first size of the first speculum and the second speculum is set, so that first
Speculum and the second speculum cover a quarter of the visual field of camera lens in vertical direction as shown in Figure 1 respectively.In this way, by
The half of the visual field of camera lens, and the upper lateral reflection obtained by the first speculum and the reflection of the second speculum are accounted in transmission image
Image and downside reflected image account for a quarter of the visual field of camera lens respectively.Upside reflected image and downside reflected image are by spelling
After conjunction, the reflected image identical with transmission image can be obtained.
Equally, when the first inner surface and the second inner surface extend along vertical direction as shown in Figure 1, the first speculum
It is located at the left inner surface 113 of housing and right side inner surface 114 respectively with the second speculum.In this case, via first
The reflected image that speculum and the second speculum are formed also is located at the left side and right side of transmission image.So in order to obtain
The reflected image identical with transmission image sets the first size of the first speculum and the second speculum, so that the first reflection
Mirror and the second speculum cover a quarter of the visual field of camera lens in horizontal direction as shown in Figure 1 respectively.In this way, due to saturating
Penetrate the half that image accounts for the visual field of camera lens, and the left side reflected image obtained by the first speculum and the reflection of the second speculum
Account for a quarter of the visual field of camera lens respectively with right side reflected image.Left side reflected image and right side reflected image pass through split
Afterwards, the reflected image identical with transmission image can be obtained.
Certainly, it will be understood by those skilled in the art that under some application scenarios, must may not necessarily obtain and transmission plot
As identical reflected image, and only need transmission image identical with reflected image part.Therefore, in such situation
Under, also the size there is no need to speculum meets the condition of a quarter of the visual field of above-mentioned covering camera lens.Similarly, via first
The size for the reflected image that speculum and the second speculum are formed also be not necessarily required it is identical, therefore, in this case,
Also there is no need to the first speculum and the second speculums all to have identical size, but can be of different sizes.
In addition, if reflected image has the redundancy of transmission image, for example the size of reflected image is more than transmission plot
The half of the size of picture, so as to which the reflected image after split has the image information repeated.It is possible to by anti-
It penetrates image to be cut, to obtain the reflected image identical with transmission image, therefore, the first speculum and the second speculum are at least
The first size of a quarter with the visual field that can cover camera lens, that is to say, that the first speculum and the second speculum
Size can also be more than the first size.
Although also, those skilled in the art are further appreciated that in the description of the embodiment of the present application, have used transmission plot
The statement of picture and reflected image, the transmission image and reflected image substantially belong to the single image being imaged by optical device
Different zones.Therefore, no matter above description or below in the description done, transmission image and reflected image are not intended to referring to
Single image, and refer to the different images region in single image, i.e. there is the parts of images of different brightness.
Alternatively or cumulatively, can be included according to the optical lens of the embodiment of the present application：3rd speculum is arranged on
On three inner surfaces and with the second reflectivity, second reflectivity is different from first reflectivity；With, the 4th speculum, if
It puts on the 4th inner surface and with the second reflectivity.
Also, the 3rd speculum and the 4th speculum at least have the second size, and second size causes the 3rd reflection
Mirror and the 4th speculum cover a quarter of the visual field of camera lens in a first direction respectively.
Here, the 3rd speculum and the 4th speculum are all anti-with the first of the foregoing description in specific setting and operation principle
It penetrates mirror and the second speculum is similar, simply set-up mode is different, for example, in the first speculum and the second speculum in the horizontal direction
In the case of extension, the 3rd speculum and the 4th speculum extend in the vertical direction；And in the first speculum and the second speculum
In the case of extending in the vertical direction, the 3rd speculum and the 4th speculum are horizontally extending.
In addition, in the optical device according to the embodiment of the present application, if only needing to form transmission image and have and this
One reflected image of transmission image difference brightness then can only have a pair of of speculum, such as the first speculum and second is instead
Penetrate mirror.Relatively, if necessary to form transmission image and with two reflected images with the transmission image difference brightness, then need
Two pairs of speculums, such as the first speculum and the second speculum and the 3rd speculum and the 4th speculum are used simultaneously.
Also, due to the first reflectivity and the 3rd speculum and the 4th speculum of the first speculum and the second speculum
Second reflectivity is different, the brightness of the first reflected image formed by the first speculum and the second speculum also with the 3rd speculum
It is different with the brightness for the image that the 4th speculum is formed.In this way, according to the optical device of the embodiment of the present application can be formed including
Independent image with different brightness, thus again via corresponding image procossing, for the HDR functions or above-mentioned of imaging device
Binocular stereo imaging function.
Fig. 3 is the schematic diagram of the visual field formed according to the optical device of the embodiment of the present application.In fig. 3, it is assumed that camera lens (shell
The first end of body) direction outside paper, and subject (second end of housing) direction in paper.As shown in figure 3, pass through basis
The housing of the cuboid inner surface of the optical device of the embodiment of the present application, camera lens are actually used in the visual field of direct imaging from housing
Among transmission, for transmission imaging, and around the visual field, in the horizontal direction and the vertical direction, respectively by speculum
A quarter is covered, for catoptric imaging.
Fig. 4 is the schematic diagram compared with camera lens according to the visual field that the optical device of the embodiment of the present application is formed.Fig. 4 is substantially
It is identical with Fig. 3, only assume that camera lens (first end of housing) direction in paper, and subject (second end of housing) is in paper
Outer direction, and depict relation of the visual field compared with camera lens.As shown in figure 4, optical device includes the first speculum 120, second
Speculum 130, the 3rd speculum 140 and the 4th speculum 150, and camera lens is located in the transmission visual field that optical device is formed
Centre, that is to say, that the center line of housing and the centerline collineation of camera lens.
For example, in the optical device according to the embodiment of the present application, only with the first speculum and the second speculum
In the case of, the first reflectivity for example can be 66%.
Also, in above-mentioned optical device, in the optical device according to the embodiment of the present application, the first speculum is being used
In the case of the second speculum and the 3rd speculum and the 4th speculum, for example, the first reflectivity can be 66%, and
Second reflectivity can be 33%.
Here, it will be understood by those skilled in the art that the numerical value of above-mentioned first reflectivity and the second reflectivity is only example,
Other specific reflectivity values can also be used according to the optical device of the embodiment of the present application.Preferably, for image procossing
It is convenient, when needing to form transmission image and there is two width reflected image of different brightness, the transmission image and two width reflectograms
The brightness value of picture may be constructed arithmetic progression.Can be considered as 1 accordingly, due to the reflectivity of transmission image, then the first reflectivity,
Second reflectivity and 1 also forms arithmetic progression.
In addition, in order to realize the first reflectivity of the first speculum and the second speculum and the 3rd speculum and the 4th
Second reflectivity of speculum, may be employed various ways.
For example, can directly have the material of the first reflectivity, such as the glass of the reflectivity with less than total reflection
Material makes the minute surface of the first speculum and the second speculum, and with have the second reflective materials make the 3rd speculum and
The minute surface of 4th speculum.
Further, it is also possible to it is obtained by the way of the plated film on the plane mirror for realizing total reflection with the first reflectivity
First speculum and the second speculum and the 3rd speculum and the 4th speculum with the second reflectivity.
Specifically, in the optical device according to the embodiment of the present application, the first speculum includes the first plane mirror and sets
The first transmission film being placed on the surface of the first plane mirror, and first transmission film has the first transmissivity, first transmissivity
It is associated with first reflectivity；Second speculum includes the second plane mirror and be arranged on the surface of second plane mirror the
Two transmission films, and second transmission film has the first transmissivity.
Fig. 5 is the schematic diagram according to the speculum with transmission film of the embodiment of the present application.As shown in figure 5, speculum 200
Including plane mirror 201 and the semi-permeable membrane 202 being arranged on 201 surface of plane mirror.
Here, on the surface of plane mirror set transmission film in the case of, light when being reflected via speculum actually
By transmission film twice.That is, incident light first passes around transmission film and incides on plane mirror, after being reflected via plane mirror again
Transmission film can be passed through.Therefore, in the case where realizing identical reflectivity, the transmissivity of transmission film should be square of reflectivity
Root.
That is, in the optical device according to the embodiment of the present application, corresponding to 66% the first reflectivity, first thoroughly
The rate of penetrating is
Similarly, in the optical device according to the embodiment of the present application, the 3rd speculum includes the 3rd plane mirror and setting
The 3rd transmission film on the surface of the 3rd plane mirror, and the 3rd transmission film has the second transmissivity, second transmissivity is with being somebody's turn to do
Second reflectivity is associated；The 4th for including fourth plane mirror with the 4th speculum and being arranged on the surface of fourth plane mirror is saturating
Film is penetrated, and the 4th transmission film has the second transmissivity.
Also, in the optical device according to the embodiment of the present application, corresponding to 66% the first reflectivity, the first transmissivity
ForAnd corresponding to 33% the second reflectivity, the second transmissivity is
Here, with including the first plane mirror and the first transmission film above for the first speculum, the second speculum includes
The second plane mirror and the second transmission film explanation it is similar, the 3rd speculum includes the 3rd plane mirror and the 3rd transmission film, and
4th speculum includes fourth plane mirror and the 4th transmission film.Also, with above for the first transmission film and the second transmission film
Explanation with the first transmissivity is similar, and the 3rd transmission film and the 4th transmission film have the second transmissivity.Therefore, in order to avoid superfluous
It is remaining no longer to carry out repeated description.
Fig. 6 is the imaging process schematic diagram according to the embodiment of the present application.As shown in fig. 6, the speculum with semi-permeable membrane 301
300 are arranged on the object side of stationary lens group 310, and the imaging light being transmitted through and the light reflected by speculum 300 pass through
Stationary lens group 310 is projected on cmos image sensor 320, to form image.In figure 6, for convenience's sake, only show
Upper and lower a pair of of speculum, but in practical applications, in addition to use upper and lower a pair of of speculum, a left side can also be used
A pair of of speculum on the right side uses both above-mentioned simultaneously.
As described above, in order to realize that horizontally extending speculum covers camera lens at four points of visual field of vertical direction
One of and/or the speculum that extends in the vertical direction cover a quarter of camera lens visual field in the horizontal direction, it is necessary to limit
Determine the size of the speculum in the horizontal direction or extended in the vertical direction.Hereinafter, the one of the calculating of mirror size will be provided
A example.
First, it is limited in the optical device according to the embodiment of the present application, first direction corresponds to the photosensitive of imaging device
The length direction of chip, and second direction corresponds to the width of the sensitive chip of imaging device.
In general, when imaging device is under general operation pattern and (is held by level), the length direction of sensitive chip is
For horizontal direction, and the width of sensitive chip is vertical direction.But since imaging device might not be all with level
Gesture operation, that is to say, that imaging device may also be operated (by vertically holding) with perpendicular attitude.Therefore, according to the application
In the optical device of embodiment, illustrate the computational methods of mirror size according to the length direction and width of sensitive chip,
And not with horizontally and vertically.
This is also in that the shape of the visual field of camera lens is substantially the shape based on sensitive chip.That is, feeling
In the case of optical chip is rectangular, the shape of the image of formation is also rectangle, and correspondingly, the visual field of camera lens is also rectangular
Shape.And in the case where sensitive chip is square, the shape of the image of formation is also square, correspondingly, the visual field of camera lens
And square.
Moreover, as noted previously, as a pair of of the speculum being mutually parallel need cover respective direction on visual field four/
One, the size of speculum is also associated with the shape of sensitive chip.That is, the rectangular shape that four speculums surround
The cross sectional shape of housing is substantially consistent with the shape of sensitive chip.
Fig. 7 A and Fig. 7 B are diagrams to be shown according to the method for determination of mirror size in the optical device of the embodiment of the present application
It is intended to.Wherein, Fig. 7 A show definition side of the optical device compared with the special parameter of the arrangement and mirror size of camera lens
Formula.As shown in Figure 7 A, it is assumed that be respectively disposed in the opposite inner face two-by-two of four inner surfaces of housing the first speculum and
Second speculum and the 3rd speculum and the 4th speculum.For example, each speculum is since the edge of the second end of housing
Arrangement, and extend towards the direction of first end.
The first size of speculum and the second size are respectively defined as h in the length of side on lens plane1And h2,
It is designated generally as h in figure, and by the length of side of the first size of speculum and the second size in the section parallel to lens plane
It is respectively defined as L and W.That is, first size and the second size are the rectangles that a length of side is h and another side a length of L or W.It can be with
Understand, L is parallel to the length of side on the length direction of sensitive chip, and W is parallel on the width of sensitive chip
The length of side.
Also, Fig. 7 B show the signal compared with the imaging of imaging device according to the optical device of the embodiment of the present application
Figure.For the speculum extended on the length direction parallel to sensitive chip, length of side L is determined flat
Whether row can cover in the speculum extended on the width of sensitive chip on the length direction parallel to sensitive chip
The a quarter of the visual field of camera lens (vice versa).Therefore, as shown in Figure 7 B, consider the camera lens of imaging device described photosensitive
Visual angle on the length direction of chip, for convenience of description, here depicted as horizontal view angle, it is necessary to meet left mirrored portion VL's
Length=right mirrored portion VRLength=see-through area V length half.Also, the length of regional transmission V is such as
Length of side L shown in Fig. 7 A, and the width of regional transmission V is length of side W as shown in Figure 7 A.
Due to the shape for the speculum that the shape of regional transmission as shown in Figure 7 B actually extends in the horizontal direction,
Therefore the top of the regional transmission is with following parallel, and equal length.Therefore, principle is divided based on Fig. 7 B and using parallel lines etc.,
It is recognised that in the optical device of the embodiment of the present application, the length of side of the first size on the direction perpendicular to lens plane
h1As the following formula represents：
h1=d
Wherein, d is in the camera lens from first speculum and second speculum adjacent to one end of the camera lens
Center line on subpoint to the optical center of the camera lens distance.Here, the optical center of camera lens refers to camera lens as shown in Figure 6
The optical centre of lens group 310.Specifically, if lens group only includes a piece of lens, then be exactly the centre bit of the lens
It puts.And if lens group includes multi-disc lens, refer to the equivalent center for the lens group that this multi-disc lens is formed.
Also, length of side L of the first size on the length direction parallel to sensitive chip such as the following formula represents：
Wherein, Y1It is visual angle of the imaging device on the length direction of sensitive chip.
Also, in above-mentioned optical device, length of side h of second size on the direction perpendicular to lens plane2Such as with
Lower formula represents：
h2=h1=d.
Also, length of side W of second size on the length direction parallel to sensitive chip such as the following formula represents：
Wherein, r is the length-width ratio of the sensitive chip of the imaging device.For example, the length-width ratio of the sensitive chip is usually 4:3
Or 16:9.
In addition, unlike situation as described above, the visual angle or imaging device are in the width of sensitive chip
Visual angle on direction.For example, when under the horizontal attitude in imaging device, the visual angle that is vertically oriented.That is, described first
Direction corresponds to the width of the sensitive chip of the imaging device, and the second direction corresponds to the imaging device
The length direction of sensitive chip.
Therefore, in the optical device according to the embodiment of the present application, the first size is perpendicular to the direction of lens plane
On length of side h1As the following formula represents：
h1=d
Wherein, d is in the camera lens from first speculum and second speculum adjacent to one end of the camera lens
Center line on subpoint to the optical center of the camera lens distance.
Also, length of side W of the first size on the width parallel to sensitive chip such as the following formula represents：
Wherein, Y2It is visual angle of the imaging device on the width of sensitive chip.
Also, in above-mentioned optical device, length of side h of second size on the direction perpendicular to lens plane2Such as with
Lower formula represents：
h2=h1=d.
Also, length of side L of second size on the length direction parallel to sensitive chip such as the following formula represents：
L=W × r
Wherein, r is the length-width ratio of the sensitive chip of the imaging device.
In addition, it will be understood by those skilled in the art that aforesaid way is to calculate the length and width of housing section
In one after, such as the length-width ratio of sensitive chip calculates another.It but equally can the difference based on imaging device
Visual angle on the length and width direction of sensitive chip, calculates both length and widths of housing section.
Therefore, the method for determination of the size of above-described speculum is only example, it will be understood by those skilled in the art that
Only need to ensure that cover a quarter of the visual field of camera lens in the corresponding direction, other manner may be employed in the size of speculum
Determine the size of speculum, the embodiment of the present application is not intended to this progress any restrictions.
Here, it will be understood by those skilled in the art that in the optical device of the embodiment of the present application, in order to form transmission plot
Picture and the reflected image identical with transmission image are, it is necessary to be defined the size of speculum.But to the size of speculum
The size that restriction is not necessarily required to speculum is identical with the size of the inner surface of housing.As described above, housing is towards camera lens
Inner edge (first end) can extend further towards the direction of camera lens, and for example formed as the fixed component fixed to camera lens.But
It is that, based on the light path as shown in figure 7 above B, the outer rim of second end of the housing away from camera lens is preferably flushed with the outer rim of speculum,
So as to be unlikely to influence light path.Certainly, if shell itself is made of transparent material, such as glass, then will not have
Above-mentioned limitation.
In addition, as described above, speculum at least has size definite in the manner described above.But the size of speculum is same
Sample can further expand.For example, by taking light path as shown in Figure 7 B as an example, when speculum extends downwardly, left mirrored portion VL
Length and right mirrored portion VR length also can correspondingly extend, so as to the half more than regional transmission V length.In this way, generation
Reflected image will generate redundancy compared with transmission image, can be obtained by way of cutting identical with transmission image anti-
Penetrate image.
Also, in the optical device of the embodiment of the present application, as described above, fixed component is arranged on housing towards camera lens
It first end and is removably coupled with camera lens.
In addition, in the optical device of the embodiment of the present application, in order to ensure imaging effect, it is desirable to pass through all light of housing
Line is incided into via camera lens on sensitive chip, for imaging.It is therefore preferred that it is coupled in the fixed component and camera lens
In the case of together, the light that housing is entered by the housing second end opposite with first end will not be let out by the first end
Reveal beyond camera lens, there is the close property of light.
Imaging effect
Fig. 8 is the schematic diagram according to the imaging effect of the optical device of the embodiment of the present application.As shown in figure 8, in housing
In the case that four inner surfaces are respectively provided with speculum, due to the reflex of four speculums, image is according to minute surface line of demarcation pair
Claim, actually get 3 width complete images, i.e., the transmission image of centre and be respectively at the parts of images of the upper side and lower side,
And the parts of images in left side and right side.Also, due to left and right speculum reflectivity and upper and lower speculum reflectivity not
Together, for example, its plated film degree is different, top and the bottom image has different brightness levels from left-right parts image.
During actual imaging, exposure parameter is used according to the global reflected image for surveying light or upper and lower mirror portion
Brightness determine.In this way, the field of view portion that is led directly to without mirror-reflection during shooting, i.e. transmission image can partially bright overexposure,
Each several part image is partially dark under-exposure up and down.By splicing i.e. available three width again for Same Scene, but use not
With the image of depth of exposure.Then, such as common HDR synthesis, three width images are carried out according to the position correspondence demarcated in advance
Weighting synthesis, can not be by one to create by the dark portion details and under exposed highlights details for the overexposure for synthesizing master image
The dynamic range that secondary exposure is realized.
Since physically three width images all in same Time Exposure, need not expose and all adjust camera parameter every time, thus
Video record can be carried out according to normal frame rate, can be used in the HDR synthesis of video monitoring scene.Come additionally, due to three width images
From in same light source and using hardware synchronization, (or hold camera/capture apparatus if the object of shooting is moving and transporting
It is dynamic), it can completely avoid the fuzzy or ghost image in the technology that several photos are synthesized in different time exposure shooting.
Therefore, the optical device of the embodiment of the present application uses specific optical texture, utilizes physics mirror-reflection and half
Permeable membrane transmits, and realizes in the same time, and Same Scene is gathered not by single exposure using on same cmos sensor
With the image of brightness.
In this way, the optical device of the embodiment of the present application need not modify in itself to imaging device with cmos sensor, it can
With the hardware monitoring equipment that compatibility is present.
Also, the optical device of the embodiment of the present application can carry out really HDR shootings in real time with associated image equipment, without
Exposure all adjusts cmos sensor parameter every time, is suitable for HDR videos, and is suitble to HDR monitoring scene applications.
In addition, the optical device of the embodiment of the present application can be taken pictures with associated image equipment in higher dynamic range,
Even if it will not obscure and generate ghost image during the object for shooting movement.
Further, double CMOS even more CMOS are not required using the imaging device of the optical device of the embodiment of the present application,
So as to realize the real-time HDR of three ranks with lower cost.
Exemplary imaging device
In the following, it is described with reference to Figure 9 the imaging system according to the embodiment of the present application.
Fig. 9 is the schematic diagram according to the imaging system of the embodiment of the present application.
As shown in figure 9, according to the imaging system 400 of the embodiment of the present application include optical device 410 as described above and into
As equipment 420, which includes camera lens 421, for the optical device 410 via camera lens 421 to subject into
Picture.
The concrete function and connection relation of unit and module in the optical device 410 are had been described above with reference to figure 1
(reference numeral 411 to 415 in Fig. 9 corresponds respectively to 110 to 114 in Fig. 1) is described in detail to Fig. 8, and therefore,
Its repeated description will be omitted herein.
In one example, driving part is further comprised according to the imaging system of the embodiment of the present application, with the optics device
Part is mechanically connected, in response to receiving the first trigger signal, the mobile optical device so that the imaging device not by
Directly subject is imaged via camera lens in the optical device and in response to receiving the second trigger signal, movement should
Optical device, so that the imaging device is imaged subject via camera lens by means of the optical device.
Specifically, according to the optical device of the embodiment of the present application in order to realize including the multiple regions with different brightness
Single image, substantially sacrifice sum of all pixels.Therefore, in the imaging system according to the embodiment of the present application, further wrap
Include to be turned on or off the driving part of the function of optical device.
Here, which can be in response to the trigger signal that receives so that imaging device is by means of the optics device
Part is imaged subject via camera lens or directly subject is imaged via camera lens without the help of the optical device.Here,
The trigger signal can manually be triggered by user, can also the automatic identification function based on scene, to determine the need for
The optical device realizes more rich imaging effect.In this way, it can obtain between total number of pixels and abundant imaging effect
Balance.
Also, in the imaging system according to the embodiment of the present application, concrete configuration and the drive of the driving part are not limited
Move the mode of the optical device.For example, the driving part can by outside the visual field of optical device integral translation to camera lens, so as to
So that imaging device is directly imaged subject via camera lens without the help of the optical device.Alternatively, the driving part may be used also
The four of the housing of the optical device surfaces to be driven outwards to be unfolded at an angle in second end, in lotus shape so that each
Surface is all outside the visual field of camera lens.
In one example, which is monitoring camera.
Therefore, the imaging system of the embodiment of the present application utilizes physics mirror by the optical device with particular optical structure
Face is reflected and semi-permeable membrane transmission, realizes in the same time, is gathered using on same cmos sensor by single exposure
The image of the different brightness of Same Scene.
In this way, the imaging system of the embodiment of the present application need not modify to cmos sensor and the setting of its own, it can
With the hardware imaging device that compatibility is present.
Also, the imaging system of the embodiment of the present application can carry out really HDR shootings in real time, all be adjusted without exposing every time
Cmos sensor parameter is saved, is suitable for HDR videos, and is suitble to HDR monitoring scene applications.
In addition, the imaging system of the embodiment of the present application can take pictures in higher dynamic range, even if shooting movement
Object when will not obscure and generate ghost image.
Further, the imaging system of the embodiment of the present application need not double CMOS even more CMOS, so as to it is lower into
Originally the real-time HDR of three ranks is realized.
To sum up, compared with prior art, using the optical device according to the embodiment of the present application and including the optics device
The imaging system of part, can include housing, the housing include at least the first inner surface and the second inner surface, first inner surface and
Second inner surface extends in a first direction and parallel to each other；First speculum is arranged on first inner surface and has
First reflectivity；With the second speculum, it is arranged on second inner surface and with first reflectivity.Therefore, Ke Yitong
Cross with the first reflectivity the first speculum and the second speculum (optionally, with the second reflectivity the 3rd speculum and
4th speculum) coordinate to form the single image for including the multiple regions with different brightness from the camera lens of imaging device, with
Convenient for subsequent image processing.
The basic principle of the application is described above in association with specific embodiment, however, it is desirable to, it is noted that in this application
The advantages of referring to, advantage, effect etc. are only exemplary rather than limiting, it is impossible to which it is the application to think these advantages, advantage, effect etc.
Each embodiment is prerequisite.In addition, detail disclosed above is merely to exemplary effect and the work readily appreciated
With, and it is unrestricted, above-mentioned details is not intended to limit the application as that must be realized using above-mentioned concrete details.
Device, device, equipment, the block diagram of system involved in the application only as illustrative example and are not intended to
It is required that or hint must be attached in a manner that box illustrates, arrange, configure.As those skilled in the art will appreciate that
, it can connect, arrange by any way, configuring these devices, device, equipment, system.Such as " comprising ", "comprising", " tool
" etc. word be open vocabulary, refer to " including but not limited to ", and can be used interchangeably with it.Vocabulary used herein above
"or" and " and " refer to vocabulary "and/or", and can be used interchangeably with it, unless it is not such that context, which is explicitly indicated,.Here made
Vocabulary " such as " refers to phrase " such as, but not limited to ", and can be used interchangeably with it.
It may also be noted that in device, device and method in the application, each component or each step are can to decompose
And/or reconfigure.These decompose and/or reconfigure the equivalent scheme that should be regarded as the application.
The above description of disclosed aspect is provided so that any person skilled in the art can make or use this
Application.Various modifications in terms of these are readily apparent to those skilled in the art, and are defined herein
General Principle can be applied to other aspect without departing from scope of the present application.Therefore, the application is not intended to be limited to
Aspect shown in this, but according to the widest range consistent with principle disclosed herein and novel feature.
In order to which purpose of illustration and description has been presented for above description.In addition, this description is not intended to the reality of the application
It applies example and is restricted to form disclosed herein.Although already discussed above multiple exemplary aspects and embodiment, this field skill
Art personnel will be recognized that its some modifications, modification, change, addition and sub-portfolio.
Claims (20)
1. a kind of optical device, which is characterized in that the optical device includes：
Housing, including at least the first inner surface and the second inner surface, first inner surface and second inner surface are along first
Direction extension is simultaneously parallel to each other；
First speculum is arranged on first inner surface and with the first reflectivity；With
Second speculum is arranged on second inner surface and with first reflectivity.
2. optical device as described in claim 1, which is characterized in that the optical device further comprises fixed component, uses
Relative position relation between the fixation optical device and the camera lens of imaging device so that the center line of the housing and institute
State the centerline collineation of camera lens.
3. optical device as claimed in claim 2, which is characterized in that first speculum and second speculum are at least
With first size, the first size causes first speculum and second speculum to cover in a second direction respectively
The a quarter of the visual field of the camera lens is covered, the second direction and the first direction are perpendicular to one another.
4. optical device as claimed in claim 3, which is characterized in that the housing further comprises the 3rd inner surface and the 4th
Inner surface, the 3rd inner surface and the 4th inner surface extend and parallel to each other along the second direction, in described first
Surface, the second inner surface, the 3rd inner surface and the 4th inner surface form rectangular shape.
5. optical device as claimed in claim 4, which is characterized in that the optical device further comprises：
3rd speculum is arranged on the 3rd inner surface and has the second reflectivity, and second reflectivity is different from
First reflectivity；With
4th speculum is arranged on the 4th inner surface and with second reflectivity.
6. optical device as claimed in claim 5, which is characterized in that the 3rd speculum and the 4th speculum are at least
With the second size, second size causes the 3rd speculum and the 4th speculum respectively in the first direction
The a quarter of the visual field of the upper covering camera lens.
7. optical device as claimed in claim 5, which is characterized in that
First speculum includes the first plane mirror and the first transmission film being arranged on the surface of first plane mirror, and
First transmission film has the first transmissivity, and first transmissivity is associated with first reflectivity；With
Second speculum includes the second plane mirror and the second transmission film being arranged on the surface of second plane mirror, and
Second transmission film has first transmissivity.
8. optical device as claimed in claim 7, which is characterized in that
3rd speculum includes the 3rd plane mirror and the 3rd transmission film being arranged on the surface of the 3rd plane mirror, and
3rd transmission film has the second transmissivity, and second transmissivity is associated with second reflectivity；With
4th speculum includes fourth plane mirror and the 4th transmission film being arranged on the surface of the fourth plane mirror, and
4th transmission film has second transmissivity.
9. optical device as claimed in claim 8, which is characterized in that first transmissivity isAnd described second
Transmissivity is
10. optical device as claimed in claim 6, which is characterized in that
The first direction corresponds to the length direction of the sensitive chip of the imaging device, and the second direction corresponds to institute
State the width of the sensitive chip of imaging device.
11. optical device as claimed in claim 10, which is characterized in that
Length of side h of the first size on the direction perpendicular to lens plane1As the following formula represents：
h1=d
Wherein, d be from first speculum and second speculum adjacent to one end of the camera lens in the camera lens
Subpoint on heart line is to the distance of the optical center of the camera lens；
Length of side L of the first size on the length direction parallel to sensitive chip such as the following formula represents：
Wherein, Y1It is visual angle of the imaging device on the length direction of the sensitive chip.
12. optical device as claimed in claim 11, which is characterized in that
Length of side h of second size on the direction perpendicular to lens plane2As the following formula represents：
h2=h1=d；
Length of side W of second size on the length direction parallel to sensitive chip such as the following formula represents：
Wherein, r is the length-width ratio of the sensitive chip of the imaging device.
13. optical device as claimed in claim 6, which is characterized in that
The first direction corresponds to the width of the sensitive chip of the imaging device, and the second direction corresponds to institute
State the length direction of the sensitive chip of imaging device.
14. optical device as claimed in claim 13, which is characterized in that
Length of side h of the first size on the direction perpendicular to lens plane1As the following formula represents：
h1=d
Wherein, d be from first speculum and second speculum adjacent to one end of the camera lens in the camera lens
Subpoint on heart line is to the distance of the optical center of the camera lens；
Length of side W of the first size on the width parallel to sensitive chip such as the following formula represents：
Wherein, Y2It is visual angle of the imaging device on the width of the sensitive chip.
15. optical device as claimed in claim 14, which is characterized in that
Length of side h of second size on the direction perpendicular to lens plane2As the following formula represents：
h2=h1=d；
Length of side L of second size on the length direction parallel to sensitive chip such as the following formula represents：
L=W × r
Wherein, r is the length-width ratio of the sensitive chip of the imaging device.
16. optical device as claimed in claim 2, which is characterized in that the fixed component is arranged on the housing towards institute
It states the first end of camera lens and is removably coupled with the camera lens.
17. optical device as claimed in claim 16, which is characterized in that the fixed component and the coupling of the camera lens have
The close property of light.
18. a kind of imaging system, which is characterized in that the imaging system includes：
Optical device as described in any one in claim 1 to 17；With
Imaging device, including camera lens.
19. imaging system as claimed in claim 18, which is characterized in that further comprise：
Driving part is mechanically connected with the optical device, in response to receiving the first trigger signal, the mobile optics
Device so that the imaging device without the help of the optical device and directly subject is imaged via the camera lens and
For in response to receiving the second trigger signal, the mobile optical device, so that the imaging device is by means of the light
Device is learned to be imaged subject via camera lens.
20. imaging system as claimed in claim 18, which is characterized in that the imaging device is monitoring camera.
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| CN201721086376.4U CN207396842U (en) | 2017-08-28 | 2017-08-28 | Optical device and the imaging system including the optical device |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201721086376.4U CN207396842U (en) | 2017-08-28 | 2017-08-28 | Optical device and the imaging system including the optical device |
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