CN110418044A - Optical system and electronic equipment - Google Patents
Optical system and electronic equipment Download PDFInfo
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- CN110418044A CN110418044A CN201910698861.4A CN201910698861A CN110418044A CN 110418044 A CN110418044 A CN 110418044A CN 201910698861 A CN201910698861 A CN 201910698861A CN 110418044 A CN110418044 A CN 110418044A
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- lenticule
- microlens array
- light
- diffracted ray
- area
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Classifications
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- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04M—TELEPHONIC COMMUNICATION
- H04M1/00—Substation equipment, e.g. for use by subscribers
- H04M1/02—Constructional features of telephone sets
- H04M1/0202—Portable telephone sets, e.g. cordless phones, mobile phones or bar type handsets
- H04M1/026—Details of the structure or mounting of specific components
- H04M1/0264—Details of the structure or mounting of specific components for a camera module assembly
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- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04N—PICTORIAL COMMUNICATION, e.g. TELEVISION
- H04N23/00—Cameras or camera modules comprising electronic image sensors; Control thereof
- H04N23/50—Constructional details
- H04N23/54—Mounting of pick-up tubes, electronic image sensors, deviation or focusing coils
-
- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04N—PICTORIAL COMMUNICATION, e.g. TELEVISION
- H04N23/00—Cameras or camera modules comprising electronic image sensors; Control thereof
- H04N23/50—Constructional details
- H04N23/55—Optical parts specially adapted for electronic image sensors; Mounting thereof
Abstract
This application discloses a kind of optical system and electronic equipments.Optical system successively includes display screen, the microlens array being arranged under display screen, lens module and image sensor from object side to image side.Wherein display screen includes the pixel unit of multiple periodic arrangements, and each pixel unit constitutes a diffraction element, and incident ray occurs diffraction effect by display screen and forms diffracted ray.Microlens array includes the multiple lenticules in periodic arrangement for collimating diffracted ray.Lens module is used to converging in the light after multiple lenticules collimation into image sensor, and image sensor is used to the light of convergence being converted to electric signal to be imaged.By the way that the microlens array being made of the lenticule of periodic arrangement is arranged between display screen and lens module, and the diffracted ray generated after display screen is all converged on image sensor using microlens array and lens module, it avoids diffracted ray from the phenomenon that similar asterism occur in imaging, improves image quality.
Description
Technical field
This application involves optical imaging field, in particular to a kind of optical system and electronic equipment.
Background technique
The upper frontal region of mobile phone front is arranged in the Front camera of mobile phone, or Front camera is arranged in the aperture of display screen
Region, or Front camera is arranged under display screen and is stretched out when in use, these modes all avoid Front camera from taking pictures
When be imaged by obtaining across the light of display screen, one of reason is for Front camera to be arranged when being imaged under screen, light
Line can generate diffraction effect when passing through display screen, the light imaging after Front camera reception diffraction will appear out similar to asterism
The phenomenon that, image quality is lower.
Summary of the invention
The application embodiment provides a kind of optical system and electronic equipment.
The application embodiment provides a kind of optical system, and the optical system successively includes display from object side to image side
Screen, microlens array, lens module and image sensor；Wherein, the display screen includes the pixel list of multiple periodic arrangements
Member, each pixel unit constitute a diffraction element, and incident ray occurs diffraction effect by the display screen and forms diffraction light
Line；The microlens array is arranged under the display screen, and the microlens array includes in the multiple micro- of periodic arrangement
Mirror, multiple lenticules are for collimating the diffracted ray；The lens module is quasi- for that will pass through multiple lenticules
Light after straight converges on the image sensor, the image sensor be used to be converted to the light of convergence electric signal with
Imaging.
In some embodiments, multiple lenticules, which are uniformly distributed, constitutes the microlens array.
In some embodiments, the quantity of the microlens array is one, wherein each lenticule corresponding one
A diffraction element；Or each lenticule corresponds to multiple diffraction elements；Or multiple lenticules correspond to one
The diffraction element；Or first quantity corresponding second quantity of the lenticule the diffraction element, first quantity with
Second quantity is different, and first quantity and second quantity are multiple.
In some embodiments, the optical system further includes Amici prism, and the microlens array includes first micro-
Lens array, the second microlens array and third microlens array, it is the Amici prism, described first micro- from object side to image side
Lens array, second microlens array and the third microlens array are successively set on the display screen and the camera lens
Between mould group, the Amici prism from region for separating feux rouges, green light, the blue light in the diffracted ray, institute
The first microlens array is stated for only collimating the red light in the diffracted ray, second microlens array is for only quasi-
Green light in the straight diffracted ray simultaneously makes the red light in the diffracted ray keep collimation, and the third is micro-
Lens array is for only collimating the blue ray in the diffracted ray and making the red light and green in the diffracted ray
Light keeps collimation.
In some embodiments, multiple lenticules on each microlens array include first area lenticule,
Second area lenticule and third region lenticule；The first area lenticule in first microlens array is used for
Collimate the red light in the diffracted ray；The second area lenticule in second microlens array is for collimating
Green light in the diffracted ray, the first area lenticule in second microlens array is for keeping described
Red light collimation in diffracted ray；Third region lenticule in the third microlens array is described for collimating
Blue ray in diffracted ray, the first area lenticule in the third microlens array is for keeping the diffraction
Red light in light collimates, and the second area lenticule in the third microlens array is for keeping the diffraction
Green light collimation in light.
In some embodiments, the quantity of the microlens array is one, and the optical system further includes light splitting rib
Mirror, the Amici prism are set between the display screen and the microlens array, and the Amici prism by described for spreading out
Feux rouges, green light, the blue light penetrated in light are separated from region, and the microlens array includes first area lenticule,
Two region lenticules and third region lenticule, the first area lenticule are used to collimate the red light in the diffracted ray
Line, the second area lenticule are used to collimate the green light in the diffracted ray, and third region lenticule is used for
Collimate the blue ray in the diffracted ray.
In some embodiments, the first area lenticule, the second area lenticule and the third region
Lenticule the image sensor projection in the plane respectively correspond first area, second area, third region, it is described
First area, the second area and the third region successively connect or are successively separately arranged.
In some embodiments, the lens module includes microscope base, lens barrel and lens, and the image sensor setting exists
In the microscope base；The lens barrel is mounted on the microscope base and offers light hole, and the light hole is used for for by described micro-
Light after lens array；The lens are arranged in the lens barrel, and the light entered from the light hole is converged by the lens
Gather to the image sensor.
In some embodiments, the lens module further includes infrared fileter, and the infrared fileter is arranged in institute
It states between image sensor and the lens.
The application embodiment also provides a kind of electronic equipment, and the electronic equipment includes shell and any one above-mentioned reality
Optical system described in mode is applied, the optical system setting is on the housing.
The optical system and electronic equipment of the application embodiment between display screen and lens module by being arranged by week
The microlens array that the lenticule of phase property arrangement is constituted, and will be generated after display screen using microlens array and lens module
Diffracted ray all converge on image sensor, avoid diffracted ray from the phenomenon that similar asterism occur in imaging, improve
Image quality.
Detailed description of the invention
The above-mentioned and/or additional aspect and advantage of the application can be from combining in description of the following accompanying drawings to embodiment
It will be apparent and be readily appreciated that, in which:
Fig. 1 is the structural schematic diagram of the electronic equipment of the application certain embodiments；
Fig. 2 a is the planar structure schematic diagram of the optical system of the application certain embodiments；
Fig. 2 b is the schematic perspective view of optical system shown in Fig. 2 a；
Fig. 2 c is the floor map of the lens of lens module in optical system shown in Fig. 2 a；
Fig. 3 is the floor map of the optical system of the application certain embodiments；
Fig. 4 is the floor map of the optical system of the application certain embodiments；
Fig. 5 is the floor map of the optical system of the application certain embodiments；
Fig. 6 is the floor map of the optical system of the application certain embodiments；
Fig. 7 is the floor map of the optical system of the application certain embodiments；
Fig. 8 is the floor map of the optical system of the application certain embodiments.
Specific embodiment
Presently filed embodiment is described below in detail, the example of the embodiment is shown in the accompanying drawings, wherein identical
Or similar label indicates same or similar element or element with the same or similar functions from beginning to end.Below by ginseng
The embodiment for examining attached drawing description is exemplary, and is only used for explaining presently filed embodiment, and should not be understood as to this Shen
The limitation of embodiment please.
Fig. 1 and Fig. 2 a is please referred to, the electronic equipment 100 of the application embodiment includes shell 110 and is arranged in shell 110
On optical system 120.Optical system 220 successively includes display screen 221, microlens array 222, camera lens mould from object side to image side
Group 223 and image sensor 224；Wherein, display screen 221 includes the pixel unit of multiple periodic arrangements, each pixel unit
A diffraction element 2211 is constituted, incident ray occurs diffraction effect by display screen 221 and forms diffracted ray；Microlens array
222 are arranged under display screen 221, and microlens array 222 includes multiple lenticules 2221 in periodic arrangement, multiple lenticules
2221 for collimating diffracted ray；Lens module 223 is used to the light after multiple lenticules 2221 collimation converging in shadow
As on sensor 224, image sensor 224 is used to the light of convergence being converted to electric signal to be imaged.
The lenticule by periodic arrangement is arranged in above-mentioned electronic equipment 100 between display screen 221 and lens module 223
2221 microlens arrays 222 constituted, and will be generated after display screen 221 using microlens array 222 and lens module 223
Diffracted ray all converge on image sensor 224, avoid diffracted ray from the phenomenon that similar asterism occur in imaging, mention
High image quality.
Specifically, referring to Fig. 1, electronic equipment 100 to can be mobile phone, tablet computer, laptop computer, game machine, head aobvious
Equipment, access control system, automatic teller machine etc., the embodiment of the present application are illustrated so that electronic equipment 100 is mobile phone as an example, it will be understood that
The concrete form of electronic equipment 100 can be other, and this is not restricted.
Shell 110 can be the shell of electronic equipment 100, the e.g. center and rear cover of mobile phone.Shell 110 can be used as
The function element (such as display screen, camera, processor, receiver, power module and communication module) of electronic equipment 100 and
The installation carrier of mainboard, shell 110 can provide the protection such as dust-proof, shatter-resistant, waterproof for function element and mainboard.Electronic equipment
100 may also include cover board 130, and cover board 130 can be made of the transparent material such as glass, sapphire, resin, on cover board 130 also
Touch-control sensing layer is can integrate, to incude touch control operation of the user on cover board 130.Cover board 130 can be common with shell 110
Accommodating chamber is surrounded, optical system 120 can be housed in accommodating chamber, so that optical system 120 moisture-sensitive and is not stained with ash.Shell
110 it is whole can be in straight panel shape, shell 110 may include can opposite sliding fixed part and movable part so that movable part can be with
Switch between the state for protruding into and stretching out；Shell 110 also may include multiple relatively turnable shells, so that shell 110
It can switch between the state for folding and being unfolded.Also referring to Fig. 1, Fig. 2 a and Fig. 2 b, from object side to image side, the application is real
The optical system 220 for applying mode successively includes display screen 221, microlens array 222, lens module 223 and image sensor
224。
Display screen 221 is mounted on the lower section on shell 110 and being located at cover board 130, and display screen 221 can be used for issuing light letter
Number, optical signal enters outside electronic equipment 100 after passing through cover board 130, so that display screen 221 is for showing picture, video, text
Equal pictures.Specifically, display screen 221 may be mounted on a face of shell 110, such as be mounted on the front of shell 110, back
On a face in face or side；Display screen 221 may be mounted on two faces of shell 110, such as display screen 221 is pacified simultaneously
On the front and the back side of shell 110；Display screen 221 can also be mounted on more than two faces of shell 110, such as aobvious
Display screen 221 is mounted on the front, the back side and side of shell 110 simultaneously.In example as shown in Figure 1, display screen 221 is mounted on
On the front of shell 110, the area of the viewing area of display screen 221 can cover 85% or more of the positive area, such as
It can be 85%, 87%, 91%, 92%, 93%, 95%, 97%, 99%, even 100%.The whole shape of display screen 221
Shape can be the shapes such as rectangle, circle, ellipse, track type, round rectangle, triangle, and this is not restricted.
Display screen 221 includes the pixel unit of multiple periodic arrangements, and each pixel unit constitutes a diffraction element
2211, incident ray occurs diffraction effect by display screen 221 and forms diffracted ray.Specifically, display screen 221 includes multiple pictures
Plain unit, a pixel unit constitute a diffraction element 2211, and each pixel unit includes multiple sub-pixels.One pixel list
Multiple sub-pixels included by member issue the light of predetermined color respectively, to form the light of pixel sending.For example, each pixel
Unit may include red (R) sub-pixel, green (G) sub-pixel, blue (B) sub-pixel.In another example, each pixel unit
It may include R sub-pixel, G sub-pixel, B sub-pixel, white (W) sub-pixel.It should be understood that based on different displaying principles, each
Pixel unit has different sub-pixel schemes, and each pixel unit may include the sub-pixel or other colors of other quantity
Sub-pixel.The application embodiment may be adapted to each sub-pixel scheme.In addition, display screen 221 can be Organic Light Emitting Diode
(Organic Light-Emitting Diode, OLED) display screen, OLED display screen have good translucency, can pass through
Visible light and infrared light.Therefore, OLED display screen nor affects on image in the case where showing the pictures such as picture, video, text
Sensor 224 receives light.Display screen 221 can also use Micro LED display.
Microlens array 222 is arranged below display screen 221, and microlens array 222 includes in the multiple of periodic arrangement
Lenticule 2221, for multiple lenticules 2221 for collimating diffracted ray, multiple lenticules 2221, which are uniformly distributed, constitutes lenticule battle array
Column 222.Specifically, microlens array 222 is arranged between display screen 221 and lens module 223, the shape of microlens array 222
Shape can be regular polygon, rectangle (as shown in Figure 2 b) or circle etc..Microlens array 222 is used for will be due to display screen 221
Diffraction element 2211 to generate the diffracted ray collimation of the specific rank of diffraction effect be directional light, specific rank herein is spread out
Penetrate light be analogous to light through grating generate different stage diffracted ray (i.e. light through grating generate 0 grade, ± 1
Grade, ± 2 grades of other diffracted rays of grade), therefore the diffracted ray of specific rank can be 0 grade, ± 1 grade, ± 2 grades of grades it is other
Diffracted ray, it is generally the case that 0 grade of diffracted ray does not need the collimation of microlens array 222, can be directed through lenticule battle array
Column 222 and lens module 223 project on image sensor 224, and the diffraction light of ± 1 grade, ± 2 grades other diffracted ray of grade
Line then needs microlens array 222 to collimate, and the energy highest of ± 1 grade of diffracted ray, i.e., ± 1 grade of diffracted ray generates
Diffraction effect it is most strong, therefore, specific rank herein generally refers to right ± 1 grade of the diffracted ray of microlens array 222 and carries out
Collimation, and the diffracted ray of other ranks such as ± 2 grades, ± 3 grades can also carry out collimation appropriate, so that ± 2 grades, ± 3 grades etc.
The diffraction effect that other ranks generate weakens, and only shows a pixel to realize in image sensor 224, so improve at
As quality.
In some embodiments, the quantity of microlens array 222 is one, in which: each lenticule 2221 corresponding one
A diffraction element 2211；Or the corresponding multiple diffraction elements 2211 of each lenticule 2221；Or multiple lenticules 2221 are one corresponding
Diffraction element 2211；Or first quantity corresponding second quantity of lenticule 2221 diffraction element 2211, the first quantity and second
Quantity is different, and the first quantity and the second quantity are multiple.
In other words, when one microlens array 222 of use, and microlens array 222 is arranged in display screen 221 and camera lens
The pass corresponding with the diffraction element 2211 in display screen 221 of lenticule 2221 when between mould group 223, in microlens array 222
System includes: 1. one-to-one, i.e., each corresponding diffraction element 2211 of lenticule 2221；2. one-to-many, i.e., each lenticule
2221 corresponding multiple diffraction elements 2211, for example, corresponding 3 diffraction elements 2211 of 1 lenticule 2221；3. many-one, i.e., more
The corresponding diffraction element 2211 of a lenticule 2221, such as corresponding 1 diffraction element 2211 of 3 lenticules 2221；4. multipair
More, the diffraction element 2211 of corresponding second quantity of the lenticule 2221 of the first quantity, the first quantity is different from the second quantity, and the
One quantity is multiple with the second quantity.Such as first quantity be 3, the second quantity is 2, that is, 3 lenticules 2221 are 2 corresponding
Diffraction element 2211.
Specifically, in some embodiments, each micro- referring to Fig. 3, the quantity of microlens array 322 is one
Mirror 3221 corresponds to a diffraction element 3211.Each lenticule 3221 of microlens array 322 and the diffraction element on display screen 321
3211 are arranged in a one-to-one correspondence, and corresponding micro- in microlens array 322 from the incident light of each diffraction element 3211
After mirror 3221, collimated ray is formed, to improve the image quality of optical system 320.
In some embodiments, referring to Fig. 4, the corresponding display screen 421 of 1 lenticule 4221 of microlens array 422
On 3 diffraction elements 4211, i.e. the corresponding multiple diffraction elements 4211 of lenticule 4221.Every 1 of microlens array 422
Lenticule 4221 is correspondingly arranged with 3 diffraction elements 4211 on display screen 421, incident from every 3 diffraction elements 4211
Light passes through in microlens array 422 after corresponding lenticule 4221, collimated ray is formed, to improve optical system 420
Image quality.
In some embodiments, referring to Fig. 5, the corresponding display screen 521 of 3 lenticules 5221 of microlens array 522
On 1 diffraction element 5211, i.e. corresponding diffraction elements 5211 of multiple lenticules 5221.Every 3 of microlens array 522
Lenticule 5221 is correspondingly arranged with 1 diffraction element 5211 on display screen 521, and incident from every 1 diffraction element 5211
Light pass through in microlens array 522 after corresponding lenticule 5221, collimated ray is formed, to improve optical system
520 image quality.
In some embodiments, referring to Fig. 6, every 5 of microlens array 622 or 4 lenticules 6221 it is corresponding aobvious
3 diffraction elements 6211 in display screen 621 (as shown in dotted line frame in Fig. 6).In other words, multiple correspondences of lenticule 6221 are multiple
Diffraction element 6211.5 lenticules 6221 of microlens array 622 are corresponding with 3 diffraction elements 6211 on display screen 621
Setting, and passed through in microlens array 622 after corresponding lenticule 6221 from the incident light of every 3 diffraction elements 6211,
Collimated ray is formed, to improve the image quality of optical system 620.
Fig. 2 a is please referred to, lens module 223 is used for will be after the collimation of multiple lenticules 2221 on microlens array 222
Light converge on image sensor 224.Specifically, lens module 223 includes microscope base 2231, lens barrel 2232 and lens
2233.Image sensor 224 is arranged in microscope base 2231.Lens barrel 2232 is mounted on microscope base 2231 and offers light hole
2234, light hole 2234 for the collimated ray after microlens array 222 for passing through.Lens 2233 are arranged in lens barrel 2232
Interior, the collimated ray entered from light hole 2234 is converged on image sensor 224 by lens 2233.
The quantity of lens 2233 can be one, and lens 2233 are convex lens or concavees lens；The quantity of lens 2233 can
To be multiple (such as two, three or three or more), multiple lens 2233 can be convex lens or concavees lens, or part is convex
Lens are partially concavees lens.In present embodiment, lens 2233 include two.Lens 2233 can be glass lens or plastics
Lens.
One or more lens 2233 can be a part of revolving body, alternatively, part is revolving body, it is partially revolution
A part of body.In present embodiment, each lens 2233 are a part of revolving body.For example, as shown in Figure 2 c, lens
2233 form revolving body lens S1 by mold first, and the shape that revolving body lens S1 is intercepted by the face perpendicular to optical axis is circle
Shape, the circular diameter are R, are then cut to the edge of revolving body lens S1, to form lens 2233.2233 quilt of lens
The shape intercepted perpendicular to the face of optical axis is rectangle, and two side lengths of rectangle are respectively T1 and T2, and T1/R ∈ [0.5,1), T2/R
∈ [0.5,1), for example, T1/R can be 0.55,0.6,0.7,0.75,0.8,0.95 etc., T2/R can be 0.5,0.65,0.7,
0.75,0.85,0.9 etc..It is appreciated that the specific ratio of T1/R and T2/R according to the size of the inner space of electronic equipment 100,
Optical parameter (such as effective optical region size of the lens 2233) factor of optical system 220 determines.Alternatively, one or more saturating
Mirror 2233 is directly made using special mold, and the die cavity of mold is the specific ratio for having had determined T1/R and T2/R
A part of revolving body, to be directly prepared into lens 2233.In this way, lens 2233 are a part of revolving body lens S1, compare
For complete revolving body lens S1, small volume is set so that the overall volume of optical system 220 reduces for electronics
Other elements in standby 100 vacate more spaces.
In some embodiments, referring to Fig. 2 a, lens module 223 may also include infrared fileter 2235, red
Outer optical filter 2235 is arranged between image sensor 224 and lens 2233.Infrared fileter 2235 is for filtering out infrared light
And the luminous ray in addition to infrared light is allowed to pass through.
Referring to Fig. 2 a, image sensor 224 is mounted on the image side of optical system 220, and image sensor 224 is used for
The light converged by lens 2233 is converted into electric signal to be imaged.Image sensor 224 can be aoxidized using complementary metal
Object semiconductor (Complementary Metal Oxide Semiconductor, CMOS) image sensor or Charged Couple
Element (Charge-coupled Device, CCD) image sensor.
The pixel unit of periodic arrangement can be equivalent to diffraction grating (as diffraction element for incident light
2211) it, is directly focused on imaging surface by lens 2233 if extraneous a branch of directional light is not intervened after display screen 221,
Multiple picture points are had on imaging surface at this time.For imaging, only 0 grade be we need effective information, and ± 1, ± 2,
It is then stray light (interference signal) etc. other levels.Optical system 220 in the application embodiment is in display screen 221 and camera lens
The microlens array 222 being made of the lenticule 2221 of periodic arrangement is set between mould group 223, and utilizes microlens array
222 and lens module 223 diffracted ray generated after display screen 221 is all cooperatively converged into image sensor
A picture point is formed on 224, is avoided diffracted ray from the phenomenon that similar asterism occur in imaging, is improved image quality.
Referring to Fig. 7, in some embodiments, optical system 720 further includes Amici prism 725, microlens array 722
Including the first microlens array 726, the second microlens array 727 and third microlens array 728.From object side to image side, light splitting
Prism 725, the first microlens array 726, the second microlens array 727 and third microlens array 728 are successively set on display
Between screen 721 and lens module 723.Amici prism 725 is used to divide feux rouges, green light, the blue light in diffracted ray from region
It separates out and, the first microlens array 726 is used for for only collimating the red light in diffracted ray, the second microlens array 727
It only collimates the green light in diffracted ray and the red light in diffracted ray is made to keep collimation, third microlens array
728 for only collimating the blue ray in institute's diffracted ray and red light and green light in diffracted ray being made to keep quasi-
Directly.
Wherein, multiple lenticules 7221 on each microlens array 722 are micro- including first area lenticule, second area
Lens and third region lenticule.First area lenticule 7262 in first microlens array 726 is for collimating diffracted ray
In red light；Second area lenticule 7273 in second microlens array 727 is used to collimate the green in diffracted ray
Light, the first area lenticule 7272 in the second microlens array 727 is for keeping the red light in diffracted ray to collimate；
Third region lenticule 7284 in third microlens array 728 is used to collimate the blue ray in diffracted ray, and third is micro-
First area lenticule 7282 in lens array 728 is for keeping the red light in diffracted ray to collimate, third lenticule battle array
Second area lenticule 7283 in column 728 is for keeping the green light in diffracted ray to collimate.
Specifically, ambient is through diffracted ray is formed after the diffraction element 7211 on display screen 721, by being divided rib
Diffracted ray is divided into including red light (R), green light (G) and blue ray (B), therefore three kinds of face by the effect of mirror 725
The light of color is incident upon three different lenticule regions that corresponding three kinds of colors are formed on the first microlens array 726, that is, divides
It Wei not first area lenticule 7262, second area lenticule 7263 and third region lenticule 7264.Also, first is micro-
Lens array 726 is for only collimating the red light in diffracted ray, in other words, the firstth area in the first microlens array 726
Red light in the collimation diffracted ray of domain lenticule 7262, and second area lenticule 7263 and third region lenticule 7264
To three kinds of colors without collimating effect.Second microlens array 727 is for only collimating the green light in diffracted ray and to spread out
The red light penetrated in light keeps collimation, and in other words, the first area lenticule 7272 in the second microlens array 727 makes
Red light after the collimation of first area lenticule 7262 keeps collimation, and second area lenticule 7273 collimates diffracted ray
In green light, and third region lenticule 7274 to three kinds of colors without collimating effect.Third microlens array 728 is for only
It collimates the blue ray in diffracted ray and red light and green light in diffracted ray is made to keep collimation, that is to say
It says, the first area lenticule 7282 in third microlens array 728 makes by first area lenticule 7262 and first area
Collimation red light after lenticule 7272 continues to keep collimation, and second area lenticule 7283 makes by second area lenticule
Collimation green light after 7273 continues to keep collimation, and third region lenticule 7284 collimates the blue ray in diffracted ray.
Finally realize that the light of three kinds of colors is all collimated, the light after collimation projects image after the convergence of lens module 723 and passes
On sensor 724, avoids diffracted ray from the phenomenon that similar asterism occur in imaging, improve image quality.
Wherein, first area lenticule 7262, second area lenticule 7263 and third region lenticule 7264 are in image
Projection on sensor 724 respectively corresponds first area, second area, third region, first area, second area and third
Region successively connects or is successively separately arranged.
First area lenticule 7272, second area lenticule 7273 and third region lenticule 7274 are in image sensing
Projection on device 724 respectively corresponds first area, second area, third region, first area, second area and third region
Successively connect or is successively separately arranged.
First area lenticule 7282, second area lenticule 7283 and third region lenticule 7284 are in image sensing
Projection on device 724 respectively corresponds first area, second area, third region, first area, second area and third region
Successively connect or is successively separately arranged.
In addition, display screen 721 and three microlens arrays 722 are sequentially placed, three microlens arrays 722 are parallel to each other.
Optical system 720 by the way that an Amici prism 725 and three microlens arrays 722 are arranged below display screen 721, first with point
Light prism 725 separates feux rouges, green light, the blue light in diffracted ray from region, recycles three microlens arrays 722
Feux rouges, green light, blue light are successively collimated, the mutual crosstalk of the diffracted ray in alignment procedure can be reduced, while increasing field angle,
Further increase image quality.
Referring to Fig. 8, in some embodiments, optical system 820 further includes Amici prism 825, microlens array 822
Quantity be one, Amici prism 825 is set between display screen 821 and microlens array 822, Amici prism 825 be used for will
Feux rouges, green light, blue light in diffracted ray are separated from region, and microlens array 822 includes first area lenticule
8222, second area lenticule 8223 and third region lenticule 8224, first area lenticule 8222 is for collimating diffraction light
Red light in line, second area lenticule 8223 are used to collimate the green light in diffracted ray, third region lenticule
8224 for collimating the blue ray in diffracted ray.
First area lenticule 8222, second area lenticule 8223 and third region lenticule 8224 are in image sensing
Projection on device 824 respectively corresponds first area, second area, third region, first area, second area and third region
Successively connect or is successively separately arranged.
Optical system 820 by the way that an Amici prism 825 and a microlens array 822 are arranged below display screen 821,
Feux rouges, green light, the blue light in diffracted ray are separated from region first with Amici prism 825, recycling one is micro-
Lens array 822 collimates feux rouges, green light, blue light respectively, can reduce the mutual crosstalk of the diffracted ray in alignment procedure, together
Shi Zeng great field angle, further increases image quality.
In the description of this specification, reference term " certain embodiments ", " embodiment ", " some embodiment party
The description of formula ", " exemplary embodiment ", " example ", " specific example " or " some examples " means in conjunction with the embodiment
Or example particular features, structures, materials, or characteristics described are contained at least one embodiment or example of the application.
In the present specification, schematic expression of the above terms are not necessarily referring to identical embodiment or example.Moreover, description
Particular features, structures, materials, or characteristics can be in any one or more embodiments or example with suitable side
Formula combines.
In addition, term " first ", " second " are used for descriptive purposes only and cannot be understood as indicating or suggesting relative importance
Or implicitly indicate the quantity of indicated technical characteristic.Define " first " as a result, the feature of " second " can be expressed or
Implicitly include at least one described feature.In the description of the present application, the meaning of " plurality " is at least two, such as two,
Three, unless otherwise specifically defined.
Although embodiments herein has been shown and described above, it is to be understood that above-described embodiment is example
Property, it should not be understood as the limitation to the application, those skilled in the art within the scope of application can be to above-mentioned
Embodiment is changed, modifies, replacement and variant, and scope of the present application is defined by the claims and their equivalents.
Claims (10)
1. a kind of optical system, which is characterized in that the optical system successively includes display screen, lenticule battle array from object side to image side
Column, lens module and image sensor；Wherein:
The display screen includes the pixel unit of multiple periodic arrangements, and each pixel unit constitutes a diffraction element, incident
Light occurs diffraction effect by the display screen and forms diffracted ray；
The microlens array is arranged under the display screen, and the microlens array includes in the multiple micro- of periodic arrangement
Mirror, multiple lenticules are for collimating the diffracted ray；The lens module is quasi- for that will pass through multiple lenticules
Light after straight converges on the image sensor, the image sensor be used to be converted to the light of convergence electric signal with
Imaging.
2. optical system according to claim 1, which is characterized in that it is described micro- that multiple lenticules are uniformly distributed composition
Lens array.
3. optical system according to claim 2, which is characterized in that the quantity of the microlens array is one, in which:
Each corresponding diffraction element of the lenticule；Or
Each lenticule corresponds to multiple diffraction elements；Or
Multiple corresponding diffraction elements of the lenticule；Or
The diffraction element of corresponding second quantity of the lenticule of first quantity, first quantity and second quantity
Difference, and first quantity and second quantity are multiple.
4. optical system according to claim 1, which is characterized in that the optical system further includes Amici prism, described
Microlens array includes the first microlens array, the second microlens array and third microlens array, described from object side to image side
Amici prism, first microlens array, second microlens array and the third microlens array are successively set on
Between the display screen and the lens module, the Amici prism is used for feux rouges, green light, the blue light in the diffracted ray
It is separated from region, first microlens array is used to only collimate red light in the diffracted ray, and described the
Two microlens arrays are for only collimating the green light in the diffracted ray and making the red light in the diffracted ray
Collimation is kept, the third microlens array is for only collimating the blue ray in the diffracted ray and making the diffraction light
Red light and green light in line keep collimation.
5. optical system according to claim 4, which is characterized in that multiple lenticules on each microlens array
Including first area lenticule, second area lenticule and third region lenticule；It is described in first microlens array
First area lenticule is used to collimate the red light in the diffracted ray；Described second in second microlens array
Region lenticule is used to collimate the green light in the diffracted ray, the first area in second microlens array
Lenticule is for keeping the red light in the diffracted ray to collimate；The third region in the third microlens array
Lenticule is used to collimate the blue ray in the diffracted ray, and the first area in the third microlens array is micro-
For mirror for keeping the red light in the diffracted ray to collimate, the second area in the third microlens array is micro-
Mirror is for keeping the green light in the diffracted ray to collimate.
6. optical system according to claim 1, which is characterized in that the quantity of the microlens array is one, described
Optical system further includes Amici prism, and the Amici prism is set between the display screen and the microlens array, described
Amici prism from region for separating feux rouges, green light, the blue light in the diffracted ray, the microlens array packet
First area lenticule, second area lenticule and third region lenticule are included, the first area lenticule is for collimating institute
The red light in diffracted ray is stated, the second area lenticule is used to collimate the green light in the diffracted ray, institute
Third region lenticule is stated for collimating the blue ray in the diffracted ray.
7. optical system according to claim 5 or 6, which is characterized in that the first area lenticule, secondth area
Domain lenticule and third region lenticule the image sensor projection in the plane respectively correspond the firstth area
Domain, second area, third region, the first area, the second area and the third region successively connect or successively phase
Interval setting.
8. optical system according to claim 1, which is characterized in that the lens module includes:
Microscope base, the image sensor are arranged in the microscope base；
Lens barrel, the lens barrel are mounted on the microscope base and offer light hole, and the light hole is used for for by described micro-
Light after lens array；And
Lens, the lens are arranged in the lens barrel, and the light entered from the light hole is converged to described by the lens
On image sensor.
9. optical system according to claim 1, which is characterized in that the lens module further include:
Infrared fileter, the infrared fileter are arranged between the image sensor and the lens.
10. a kind of electronic equipment characterized by comprising
The described in any item optical systems of claim 1 to 9；
Shell, the optical system setting is on the housing.
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| CN201910698861.4A CN110418044B (en) | 2019-07-31 | 2019-07-31 | Optical system and electronic apparatus |
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| CN201910698861.4A CN110418044B (en) | 2019-07-31 | 2019-07-31 | Optical system and electronic apparatus |
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