CN107837070A - Portable skin detector with big shooting area - Google Patents
Portable skin detector with big shooting area Download PDFInfo
- Publication number
- CN107837070A CN107837070A CN201710923923.8A CN201710923923A CN107837070A CN 107837070 A CN107837070 A CN 107837070A CN 201710923923 A CN201710923923 A CN 201710923923A CN 107837070 A CN107837070 A CN 107837070A
- Authority
- CN
- China
- Prior art keywords
- light
- camera lens
- skin
- portable skin
- skin detector
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Pending
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Classifications
-
- A—HUMAN NECESSITIES
- A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
- A61B—DIAGNOSIS; SURGERY; IDENTIFICATION
- A61B5/00—Measuring for diagnostic purposes; Identification of persons
- A61B5/0059—Measuring for diagnostic purposes; Identification of persons using light, e.g. diagnosis by transillumination, diascopy, fluorescence
- A61B5/0077—Devices for viewing the surface of the body, e.g. camera, magnifying lens
-
- A—HUMAN NECESSITIES
- A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
- A61B—DIAGNOSIS; SURGERY; IDENTIFICATION
- A61B5/00—Measuring for diagnostic purposes; Identification of persons
- A61B5/44—Detecting, measuring or recording for evaluating the integumentary system, e.g. skin, hair or nails
- A61B5/441—Skin evaluation, e.g. for skin disorder diagnosis
-
- G—PHYSICS
- G01—MEASURING; TESTING
- G01B—MEASURING LENGTH, THICKNESS OR SIMILAR LINEAR DIMENSIONS; MEASURING ANGLES; MEASURING AREAS; MEASURING IRREGULARITIES OF SURFACES OR CONTOURS
- G01B13/00—Measuring arrangements characterised by the use of fluids
-
- G—PHYSICS
- G03—PHOTOGRAPHY; CINEMATOGRAPHY; ANALOGOUS TECHNIQUES USING WAVES OTHER THAN OPTICAL WAVES; ELECTROGRAPHY; HOLOGRAPHY
- G03B—APPARATUS OR ARRANGEMENTS FOR TAKING PHOTOGRAPHS OR FOR PROJECTING OR VIEWING THEM; APPARATUS OR ARRANGEMENTS EMPLOYING ANALOGOUS TECHNIQUES USING WAVES OTHER THAN OPTICAL WAVES; ACCESSORIES THEREFOR
- G03B15/00—Special procedures for taking photographs; Apparatus therefor
- G03B15/02—Illuminating scene
Abstract
The invention discloses a kind of Portable skin detector with big shooting area.The Portable skin detector includes camera lens module, light module and the lens barrel with skin contact, and wherein camera lens module includes camera lens, and the shooting area of camera lens is in 15*15 square millimeters between 25*25 square millimeters；Light module is arranged on around camera lens module, and is provided with diffuser plate so that uniform light be irradiated on skin.Portable skin detector provided by the present invention can realize big shooting area and picture quality is undistorted, cost is low, small volume.
Description
Technical field
The present invention relates to a kind of Portable skin detector with big shooting area, belong to skin measurement technical device neck
Domain.
Background technology
Skin detection instrument on the market is divided into computermatic and portable two kinds.Wherein, computermatic skin detection instrument has behaviour
Make platform, its display screen, the function of main frame and size are suitable with normal personal computer, such as U.S.'s VIS IA skin detection instrument
Deng mainly being used in beauty parlor or professional medical mechanism, can disposably detect full face skin.However, this skin detection
Instrument it is expensive, volume is big, can not spread to ordinary consumer and use whenever and wherever possible.
Portable skin detector generally only has hand size, is convenient for carrying, but it can only detect regional area, not possess
Disposably detect the function of full face skin.This kind of Portable skin detector is generally used in combination with cell phone application, is easy to commonly disappear
Expense person carries out skin detection whenever and wherever possible.
But compared with computermatic skin detection instrument, the small volume of Portable skin detector, operational capability is relatively
It is low.Volume and operational capability are limited to, the region detected every time is the subregion of face, most square of captured area
Grade is other, such as：5 millimeters * 5 millimeters etc..The lens shooting multiplying power of existing Portable skin detector can reach 60：1,
But this mode can cause pattern distortion.
In addition, shooting area it is too small can cause obtain skin data it is imperfect, skin characteristic omit, so as to cause skin
The error correcting capability of detector is poor, and analyzable data are less.Such as：Crow's feet is generally more than 10 millimeters, 5 square millimeters of bat
Complete fish tail print image can not obviously be shot by taking the photograph area.Many skins can be also missed in 5 square millimeters of shooting area
Feature, such as one acne (being commonly called as small pox) of shooting, and side also has other skin secretions or color spot etc..Or due to
The user of Portable skin detector is ordinary consumer, and operating experience is not enriched, and can only when oneself is operated on the face
By specular observation problem skin region, occur the position of skin detection instrument putting mistake unavoidably, then in 5 square millimeters of bat
It is difficult all to obtain the information of these problem skins in the range of taking the photograph, causes the skin in the skin image of skin detection instrument shooting
Feature is omitted.
Therefore, it is necessary to which a kind of can realize big shooting area and undistorted, the inexpensive portable skin detection of image
Instrument.
The content of the invention
In view of the shortcomings of the prior art, the technical problems to be solved by the invention are that providing one kind has big shooting area
Portable skin detector.
To realize above-mentioned goal of the invention, the present invention uses following technical schemes：
A kind of Portable skin detector with big shooting area, including camera lens module, light module and connect with skin
Tactile lens barrel；Wherein,
The camera lens module includes camera lens, and the shooting area of the camera lens is in 15*15 square millimeters to 25*25 square millimeters
Between；
The light module is arranged on around camera lens module, and is provided with diffuser plate so that uniform light be irradiated to
On skin.
Wherein more preferably, between the angle of view is 35 °~50 °.
Wherein more preferably, multiple luminescent devices are equidistantly uniformly arranged in fixed plate；The diffuser plate is covered in described
On luminescent device and light transmittance is more than 80%.
Wherein more preferably, the position that the luminescent device exposes is removed in the lower surface of the fixed plate, coated with fluorescence
Mixture.
Wherein more preferably, the fluorescent mixture is yellow fluorescence mixture, so that the light that the luminescent device is launched
Line turns into white light under the optical effect of the fluorescent mixture.
Wherein more preferably, the lens barrel inner surface is handled by frosted, to carry out diffusing reflection.
Wherein more preferably, the colour temperature for the light that the luminescent device is sent is 5500K~6500K.
Wherein more preferably, the colour temperature for the light that the luminescent device is sent is 6000K.
Wherein more preferably, the object distance of the camera lens is 30 millimeters.
Wherein more preferably, the camera lens module also includes CMOS, and its effective photosensitive matrix area is 2592
(W)*1944(H)。
The Portable skin detector with big shooting area provided by the present invention, before compact portable demand is met
Put, the fine definition of larger area and distortionless skin image can be shot.Therefore, even ordinary consumer uses this
Portable skin detector, it can also capture complete, comprehensively and accurately skin characteristic.
Brief description of the drawings
Fig. 1 is the overall structure profile of the present invention；
Fig. 2A~Fig. 2 C are the schematic appearance of camera lens module and light module in the present invention；
Fig. 3 is the profile of camera lens module and light module in the present invention；
Fig. 4 is the angle of visual field schematic diagram of camera lens in the present invention；
Fig. 5 A and Fig. 5 B are the schematic diagram of lens shooting area in the present invention；
Fig. 6 is the structural representation of diffuser plate in the present invention；
Fig. 7 is the partial schematic diagram of light module in the present invention.
Embodiment
The technology contents of the present invention are described in further detail with specific embodiment below in conjunction with the accompanying drawings.
The Portable skin detector with big shooting area provided by the present invention, ensureing that equipment is integrally compact, just
Take, at the same captured image on the screen such as mobile phone or tablet personal computer can it is clear and legible on the premise of, it is possible to achieve it is maximum
Shooting area, so as to obtain the characteristic information of plurality of positions on greater area of skin.It is dramatically different with the present invention, it is existing
The common practice for having other products is skin of the shooting compared with small area, passes through the larger enlargement ratio (example of magnifying glass or camera lens
Such as 15 times) obtain trickleer characteristic information on this skin compared with small area.
In order to obtain more skin characteristic information, to obtain correct skin quality analytical conclusions, it is necessary to expand skin shooting
Area, the characteristic feature region of all problems skin is covered as far as possible.In view of the demand, at the same in order to meet it is compact just
Take, low cost, and clearly photograph the technical requirements of whole skin characteristics, Portable skin detector provided by the present invention
Shooting area be arranged in the range of 15*15 square millimeters~25*25 square millimeters.
The selection of above-mentioned shooting area considers meticulously by inventor.On the one hand, counted according to existing skin data,
Skin characteristic feature region typically within 20*20 square millimeters, such as：Acne, blackhead, color spot, pore etc..There is part skin
Skin feature is long, such as decree line, can exceed that the coverage of 20*20 square millimeters, but its principal character (i.e. texture depth
The best part) also it is distributed across in the coverage of 20*20 square millimeters, therefore 20*20 square millimeter scopes can be passed through
Interior skin information, it will carry out repairing compensation to obtain relatively complete information without complete data message is shot.The opposing party
Face, more adjacent feature illnesss can be disposably got in the range of 20*20 square millimeters, such as：There are acne, Cuo beside color spot
There is situations such as blackhead around sore.
In order to realize so big shooting area, this Portable skin detector is adjusted to camera lens configuration, simultaneously
In view of imaging effect, light is also redesigned, to ensure to irradiate uniformly and send out in the range of shooting area greatly
Penetrate colour temperature and intensity meets imaging standards.It is described as follows：
As shown in figure 1, Portable skin detector provided by the present invention, including test section 100 and Handheld Division 200.Its
In, test section 100 is used for skin-proximal, and its outward appearance is as shown in Fig. 2A~Fig. 2 C；Handheld Division 200 is used for user and grips and control
System, to carry out skin detection.
With reference to Fig. 1~Fig. 3, test section 100 includes camera lens module and light module.Below as in Fig. 3 from the bottom up
Order is introduced successively.
Bottom is lens barrel 2, and its lens barrel lower surface 1 is used to abut in people's face skin, and light is penetrated through lens barrel lower surface 1
To skin, to carry out skin detection.The top of lens barrel 2 is light diffuser plate 3, and it is annular, and intermediate gaps are used for lens shooting.
The top of light diffuser plate 3 is light diffusion plate support 4, for light diffuser plate 3 to be installed into light wing plate 5, passes through light
Module bracket 6, light diffuser plate 3 is installed on pcb board 10.
Cam lens 8 are arranged above in light diffuser plate 3.Cam lens 8 are fixed by camera bracket 7
On pcb board 10.There is cmos device 9 surface of cam lens 8, for photosensitive, converts optical signal into electronic signal.
As shown in figure 4, in one embodiment of the invention, the angle of view degree of cam lens 8 is 46.2 °, mirror
The distance of head focal length lens barrel lower surface 1 (i.e. the surface of the fuselage contact skin edge of skin detection instrument) is 30 millimeters, i.e.,
30 millimeters of object distance.This object distance is according to human hand gripping handle, and lens barrel lower surface 10 is pressed close to comfort distance during people's face skin
Setting, meet the requirement of ergonomic design.
As shown in Figure 5 A and 5B, the CMOS selected in the present embodiment is 5-megapixel 1/4lens, CMOS effective feeling
Light matrix area is 2592 (w) * 1944 (h), therefore CMOS the ratio of width to height of finding a view is 2592/1944.Such cmos device tool
There are 5,000,000 pixels, the image definition requirements under big shooting area can be met, be advantageous to the skin image analysis in later stage.
Because the angle of view is 46.2 °, and tan (46.2/2)=(L/2)/30=0.42653614613916, so L
25.8 millimeters of ≈, wherein L are the catercorner length of lens shooting picture.
BecauseAgain because 15.48 millimeters of W/H=2592/1944, H ≈.
Therefore it is calculated, the wide W and high H for shooting area are respectively：20.64 millimeters of 15.48 millimeters of W ≈, H ≈, so as to
Show that it is W*H=15.48*20.64=319.5072 square millimeters to shoot area S as shown in Figure 5A.It is it is achieved that larger
Shoot area.
In order to realize that light is uniform in the range of shooting area greatly, to obtain the clear skin image under standard light,
Light module design is as shown in Figure 6 and Figure 7.Illustrated together with reference to Fig. 6 light diffuser plate 2 and Fig. 3, Fig. 7.
Light module includes PCB aluminium bases 22, fixed plate 24 and luminescent device 26.Diffuser plate 3 is arranged on fixed plate 24
Lower section (apart from lens barrel lower surface 1 closer to that is, in detection closer to skin direction), covers luminescent device 26.PCB aluminium bases 22
Electrically connected with luminescent device 26 and be arranged on the top (direction away from lens barrel lower surface 1) of fixed plate 24.Multiple photophores
Part 26 is equidistantly uniformly arranged in fixed plate 24 around all footpaths of fixed plate 24.Each luminescent device 26 is 120 ° of hair
Optic angle.Light emits from luminescent device 26, the diffuser plate 3 through light transmittance more than 80%, in directive lens barrel 2, until people
Face skin surface.Due to the effect of diffuser plate 3, luminescent device 26 emits light, breaks up luminous flux by diffuser plate 3, makes
Whole plate face forms a uniform light-emitting area without forming dark space, and afterimage will not be formed on picture.Moreover, in fixation
The lower surface (apart from lens barrel lower surface 1 closer to that is, in detection closer to skin) of plate 24, removes the position that luminescent device 26 exposes
Put, coated with fluorescent mixture, the light for being sent to luminescent device 26 carries out light filling, further such that light is evenly.
The inner surface (not shown) of lens barrel 2, is handled by frosted so that and it is rough, light diffusing reflection is caused, so as to
Diffusing reflection can be formed, then project after the light that luminescent device 26 projects reaches the inner surface of lens barrel 2 by diffuser plate 3
Face skin surface.
As can be seen here, light filling is carried out using fluorescent mixture, carries out sheen processing using diffuser plate 3, utilize table in lens barrel 2
Face forms diffusing reflection, and the light that the equally distributed multiple luminescent devices 26 of annular are launched is distributed more uniformly across people's face skin
On.
In addition, in order that skin image shows normal, it is necessary to which the light for sending luminescent device 26 is kept when reaching skin
For standard light, i.e. light of the colour temperature between 5500K~6500K.In one embodiment of the invention, luminescent device 26 is sent
Colour temperature is 6000K light, selects high dominant luminescent device so that the colour temperature deviation range of light is small, and glimmering from yellow
Light mixture adjusts colour temperature, can so cause after the optical effect of fluorescent mixture, light is standard white light.Cause
This, the light module design of the present embodiment, when realizing detection skin every time, it is standard white light to be mapped on people's face skin,
Colour temperature deviation is small, and is not influenceed by other light.
The angle of view used in above example is 46.2 °, it will be understood by those skilled in the art that the angle of view
It can also be adjusted with focal length, shooting area.In order to ensure that picture quality is undistorted, the angle of visual field can not be too small, should 35 °~
Between 50 °.
The main feature of the present invention obtains large area high definition skin data under uniform source of light, is not influenceed by external light source,
It is continuously shot in fixed optical band, the later stage carries out Treatment Analysis using the high definition skin data got.
Compared with prior art, Portable skin detector provided by the present invention, can both meet compact portable
Demand, the fine definition of larger area and distortionless skin image can also be shot.Therefore, even ordinary consumer uses
This Portable skin detector, it can also capture complete, comprehensively and accurately skin characteristic.
The Portable skin detector with big shooting area provided by the present invention is described in detail above.
For those of ordinary skill in the art, it is done on the premise of without departing substantially from true spirit any aobvious and easy
The change seen, it will all form to infringement of patent right of the present invention, corresponding legal liabilities will be undertaken.
Claims (10)
1. a kind of Portable skin detector with big shooting area, including camera lens module, light module and and skin contact
Lens barrel, it is characterised in that：
The camera lens module includes camera lens, the shooting area of the camera lens 15*15 square millimeters to 25*25 square millimeters it
Between；
The light module is arranged on around camera lens module, and is provided with diffuser plate so that uniform light be irradiated to skin
On.
2. Portable skin detector as claimed in claim 1, it is characterised in that：
Between the angle of view is 35 °~50 °.
3. Portable skin detector as claimed in claim 1, it is characterised in that：
Multiple luminescent devices are equidistantly uniformly arranged in fixed plate；
The diffuser plate is covered on the luminescent device and light transmittance is more than 80%.
4. Portable skin detector as claimed in claim 3, it is characterised in that：
The position that the luminescent device exposes is removed in the lower surface of the fixed plate, coated with fluorescent mixture.
5. Portable skin detector as claimed in claim 4, it is characterised in that：
The fluorescent mixture is yellow fluorescence mixture, so that the light that the luminescent device is launched mixes in the fluorescence
Turn into white light under the optical effect of thing.
6. Portable skin detector as claimed in claim 4, it is characterised in that：
The lens barrel inner surface is handled by frosted, to carry out diffusing reflection.
7. Portable skin detector as claimed in claim 5, it is characterised in that：
The colour temperature for the light that the luminescent device is sent is 5500K~6500K.
8. Portable skin detector as claimed in claim 7, it is characterised in that：
The colour temperature for the light that the luminescent device is sent is 6000K, and dominant for height.
9. Portable skin detector as claimed in claim 1, it is characterised in that：
The object distance of the camera lens is 30 millimeters.
10. Portable skin detector as claimed in claim 1, it is characterised in that：
The camera lens module also includes CMOS, and effective photosensitive matrix area of the CMOS is 2592*
1944。
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201710923923.8A CN107837070A (en) | 2017-09-30 | 2017-09-30 | Portable skin detector with big shooting area |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201710923923.8A CN107837070A (en) | 2017-09-30 | 2017-09-30 | Portable skin detector with big shooting area |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN107837070A true CN107837070A (en) | 2018-03-27 |
Family
ID=61661568
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201710923923.8A Pending CN107837070A (en) | 2017-09-30 | 2017-09-30 | Portable skin detector with big shooting area |
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Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109893096A (en) * | 2019-03-21 | 2019-06-18 | 武汉嫦娥医学抗衰机器人股份有限公司 | A kind of face image capturing apparatus for skin analysis |
| EP3838339A1 (en) * | 2019-12-20 | 2021-06-23 | Koninklijke Philips N.V. | Treatment device and method |
| CN113064316A (en) * | 2019-12-27 | 2021-07-02 | 丽宝大数据股份有限公司 | Lens device with shading structure |
| CN113729626A (en) * | 2021-08-03 | 2021-12-03 | 蒋登文 | Portable skin quality detection device and system based on image recognition |
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