Imaging device for measuring characteristics of a hair or a scalp

Abstract

A hand held imaging device for measuring characteristics of hair and scalp, comprising a housing with a high magnification optic for obtaining magnified images of surface characteristics of hair fibers, said high magnification optic comprising a first lens and a first light source, and a low magnification optic for obtaining magnified images of the scalp and hair, said low magnification optic comprising a second lens and a second light source, wherein the high magnification optic has a fixed focal length and a slot for locating hair fibers in frame such that the hair fibers are in focus and wherein the device further comprises a viewing means, selected from an integral viewing means, an external viewing means and a combination thereof.

Claims

1. A hand held imaging device for measuring characteristics of hair and scalp, comprising a housing with a high magnification optic for obtaining magnified images of surface characteristics of hair fibres, said high magnification optic comprising a first lens and a first light source, and a low magnification optic, said low magnification optic for obtaining magnified images of the scalp and hair independent of said high magnification optic and comprising a second lens and a second light source, wherein the high magnification optic has a fixed focal length and a slot for locating hair fibres in frame such that the hair fibres are in focus and wherein the device further comprises a viewing means, selected from an integral viewing means, an external viewing means and a combination thereof.

2. An imaging device as claimed in claim 1, wherein the low magnification optic has a light polarisation assembly, such that polarised and non-polarised illumination can be selected.

3. An imaging device as claimed in claim 2, wherein the light polarisation assembly is powered or controlled remotely from a software application.

4. An imaging device as claimed in claim 1, wherein the low magnification optic has a fixed focal length.

5. An imaging device as claimed in claim 4, wherein the low magnification optic has a cap, to give the correct spacing between the lens and the surface.

6. An imaging device as claimed in claim 1, wherein the slot has a width of from 0.5 to 1.0 mm and a depth of from 10 to 20 mm.

7. An imaging device as claimed in claim 1, wherein from 1 to 100 hair fibres are held in the slot.

8. An imaging device as claimed in claim 1, wherein the low magnification optic has a resolution in the range of 10 to 200 times (10 to 200) and the high magnification optic has a resolution in the range of 500 to 1500 times (500 to 1500).

9. An imaging device as claimed in claim 1, which comprises more than one light spatially arranged circularly around the low magnification optic located at a tip of the device.

10. An imaging device as claimed in claim 1, further comprising a software connection mechanism configured to connect to a software device.

11. An imaging device as claimed in claim 10, which is connected to a software device.

12. An imaging device according to claim 11 in which images are transferred to the software device.

13. An imaging device as claimed in claim 12, wherein the software device has an algorithm that provides a method for recommending hair-care products according to how relevant they are for individual consumers, based on benefits claimed on the products.

14. A method for evaluating condition of hair and scalp using the imaging device of claim 1, and recommending products appropriate to the condition of the hair, which method comprises the steps of: 1) placing hair fibres in the slot and obtaining a high resolution image of the fibres; 2) optionally placing the low magnification optic onto the hair or scalp and obtaining an image; 3) using the images of steps 1) and 2) to make an assessment of the condition of the hair or scalp; and 4) using the assessment of step 3) to provide a product recommendation.

15. A workstation comprising the hand held imaging device of claim 1, and a screen, wherein the hand held device and the screen a positioned on a unitary base.

Description

BRIEF DESCRIPTION OF THE FIGURES

(1) Embodiments of the present disclosure will now be described with reference to the following non-limiting drawings in which:

(2) FIG. 1 is a perspective view of a hand held imaging device in accordance with the present disclosure;

(3) FIG. 2 is a perspective view of a hand held imaging device showing internal elements;

(4) FIG. 3 is a perspective view of a hand held imaging device in use;

(5) FIG. 4 is a view of the low magnification end showing the supporting ring (15) with eight spatially arranged lights.

(6) FIG. 5 is a perspective view of a workstation (16) comprising the hand held imaging device.

(7) FIG. 1 is a perspective view of the device comprising a housing (1), a high magnification optic (2), a low magnification optic (3), a slot (4), a means for connecting to an external viewing means (5), a shutter button (6), a gripping portion (7) and a spacer cap (8).

(8) FIG. 2 is a view of the device showing internal elements. In this figure, the high magnification optic (2) is shown along with its component first lens (9) and first light source (10), and the low magnification optic (3) is also shown to comprise a second lens (11) and a second light source (12).

(9) FIG. 3 is a perspective view of the slot feature in use. A bundle of hair fibres (13) is held in the slot (4) to obtain a high resolution image.

(10) FIG. 4 is a view of the low magnification end showing the supporting ring (15) with eight spatially arranged lights (14). The spacer cap (8) can be twisted in order to polarize the light.

(11) FIG. 5 is a perspective view of a workstation (16) comprising the hand held imaging device (17) resting in a stand (18) and a screen (19), all positioned on a unitary base (20).

DETAILED DESCRIPTION

(12) The present disclosure relates to a hand held imaging device for measuring characteristics of hair and scalp.

(13) By the terms hand-holdable or hand held is meant a device typically measuring in length (not including any cord) less than 35 centimeters (cm), preferably between 10 and 25 cm and a width between 2 and 8 cm, preferably between 3 and 6 cm.

(14) The device is preferably a microscope.

(15) The device preferably has a tip end that can be held in close proximity to the scalp and roots of the hair.

(16) The Housing

(17) The device features a housing (1). Normally, the housing is formed of a relatively hard plastic such as ABS (polyacrylonitrile-butadiene-styrene) which is a high impact resistant plastic.

(18) Preferably, the housing has a gripping portion (7) which can be as simple as an indentation or depression for the thumb. Preferably the gripping portion forms an area that is flush with the housing. In a preferred embodiment, the gripping portion is formed from a material having a relatively high coefficient of friction (relative to that of the housing), which is soft but durable. Such materials can be natural, for example rubber, or synthetic, for example PVC, polyurethane and silicone based materials.

(19) The High Magnification Optic

(20) The high magnification optic is used for obtaining magnified images of surface characteristics of individual hair fibres. For example, details of cuticles and split ends.

(21) The high magnification optic (2) comprises a first lens (9) and a first light source (10). The light source and lens are aligned such that the light source is directed onto the hair and a magnified image of the hair is created through the lens.

(22) The high magnification optic has a slot (4) for locating hair fibres in frame, and a fixed focal length configured such that the located hair fibres are in focus and no manual focusing is required. The slot preferably has a width of from 0.5 to 1.0 mm, more preferably from 0.7 to 0.9 mm, and a depth of from 10 to 20 mm, preferably from 12 to 15 mm.

(23) The resolution of the high magnification optic is preferably in the range of 500 to 1500 times (500 to 1500), more preferably from 600 to 1000, most preferably from 700 to 900.

(24) The number of hair fibres is preferably from 1 to 100, more preferably from 5 to 50. It was found that the number of fibres affected the image quality. We have found that the use of a bundle of 1 to 100, particularly 5 to 50 hairs is particularly advantageous in the attainment of at least one hair in focus at any one time. Thus no manual focusing is required to obtain a focused image.

(25) The high magnification optic is advantageously used to obtain high quality images of the hair fibres along the length of the shaft and the tips of the fibre when the hair is attached to the head of a user. It can also be used to image the roots, when using loose hairs.

(26) The Low Maginification Optic

(27) The low magnification optic comprises a second lens (11) and a second light source (12). The light source and lens are aligned such that the light source is directed onto the hair and/or scalp and a magnified image of the hair and/or scalp is created through the lens. The low magnification optic (3) is preferably located at the tip of the hand held imaging device that can be held in close proximity to the scalp and hair.

(28) The resolution of the low magnification optic is preferably in the range of 10 to 200 times (10 to 200), more preferably from 25 to 150, most preferably from 30 to 100.

(29) The low magnification optic may have a fixed focal length or a variable adjustable focal length.

(30) Where the focal length is fixed, the low magnification optic preferably has a spacer cap (8), to give the correct spacing between the lens and the surface.

(31) Where the focal length is variable, a focusing means is required. This may adjust the position of the lens or the length of the microscope. A preferred focal means is a focusing wheel. An adjustable focusing cap may be adjusted by pulling or twisting the cap to alter the length, thus changing the focus.

(32) The low magnification optic comprises a second light source.

(33) The second light source preferably comprises more than one light, preferably from four to ten lights, most preferably eight lights, spatially arranged (14) around the low magnification optic, located at the tip of the device. Preferably, this is achieved by positioning the lights on a ring (15) supporting the lights. Preferably, the lights are Light Emitting Diodes (LEDs).

(34) The low magnification optic preferably has a light polarisation assembly, such that polarised and non-polarised illumination can be selected. Preferably, the light polarisation assembly is powered and/or controlled remotely from a software application. Alternatively, the polarization can be controlled by mechanical means, preferably with a button or by twisting a cap, such as a spacer cap, at the low magnification end of the microscope. Polarisation can enable better images of features of the hair and scalp to be obtained.

(35) The low magnification optic is used for obtaining magnified images of the scalp and hair. The low magnification optic is advantageously used to obtain high quality images of the hair root area (near the scalp) and of the scalp when the hair is attached to the head of a user. It may be used to obtain images of all parts of the fibre when using loose hairs. The low magnification optic highlights a number of features which can be indicative of attributes linked with healthy or damaged hair, for example scalp sebum; scalp dandruff; hair abundance (how many hairs in a specific area of scalp) and follicle occupancy (number of hairs coming out of each follicle.

(36) The Viewing Means

(37) Preferably, supporting software captures the data signal from the microscope and converts it to a digital image, which can then be shown on the viewing means.

(38) The device comprises a viewing means, which is selected from an integral viewing means, an external viewing means and a combination thereof.

(39) The viewing means is for the purpose of viewing images of the hair and scalp that are obtained by the high magnification optic and the low magnification optic of the device.

(40) The images may be viewed directly through a viewing means that is internal to the device, such as a small screen built into the device. The images may be transferred to an external viewing means such as a screen.

(41) Suitable integral viewing means include a screen that is integral to the housing of the device, and an integral eye piece. Such a screen will be a miniature screen, compatible with the size of the hand held imaging device.

(42) Preferably, the viewing means is an external viewing means. Where an external viewing means is used, means for connecting to an external viewing means will be required. Preferred means for connecting are a USB connector, a phono connector and wireless connectivity.

(43) Preferably the external viewing means is a separate device, that comprises a screen, to which the hand held imaging device of the present disclosure can be releasably connected. Preferred such separate devices include a computer, a monitor, a mobile phone, a tablet and a laptop.

(44) Image Capture

(45) The hand held device may comprise an optional shutter operating means, for example a shutter button (6). It is preferred if the shutter operating means is located on the opposite side of the housing to the slot. This promotes ease of operation with one hand whilst the device is in use.

(46) The images of the hair and scalp can be displayed on a screen. Images may be captured (for example recorded or saved) on a software device.

(47) The images are used to make an assessment of the condition of the hair and/or scalp. The images may also be used in conjunction with the output from an algorithm to evaluate hair or scalp condition.

(48) An assessment may be made by comparison to a set of images showing incremental differences in a condition of the hair, such as damage. Damage may be shown, for example, by cuticle lifting, cuticle erosion, split ends and so on. This will be apparent from images obtained from the high magnification optic.

(49) Similarly the features can be assessed which will be apparent from images obtained from the low magnification optic, which can be indicative of a number of attributes linked with healthy or damaged hair, for example scalp sebum; scalp dandruff; hair abundance (how many hairs in a specific area of scalp) and follicle occupancy (number of hairs coming out of each follicle.

(50) A product recommendation may be made by comparing the assessment to a list of products designed to alleviate the conditions of the hair, such as cuticle lifting, cuticle erosion, split ends, presence of sebum, dandruff, hair abundance, follicle occupancy and so on. This may be carried out manually or by software or algorithm means. An algorithm may provide a method for recommending hair-care products according to how relevant they are for individual consumers, based on benefits claimed on the products.

(51) Connectivity

(52) The imaging device of the present disclosure preferably comprises a means for connecting to a software device, preferably selected from a USB connector, Bluetooth connectivity, wireless connectivity and serial port connection routes.

(53) The imaging device may be connected to a software device. Preferably the software device is selected from a computer, a mobile phone, a tablet and a laptop computer. Connection to a software device enables images of hair to be transferred to the software device. The images may then be displayed for viewing.

(54) Preferably, power to the system is delivered externally from an electric grid. More preferably, power is delivered from a device, preferable a software device to which the hand held imaging device of the present disclosure may be releasably connected. Alternatively, power can be supplied by a rechargeable battery or disposable batteries within the device.

(55) Most preferably the means for connecting the hand held imaging device to a software device, the external viewing means and the power delivery are all facilitated through a single connection.

(56) The Workstation

(57) The workstation comprises the hand held imaging device and a screen, preferably a software device, wherein the hand held device and the screen are positioned on a unitary base. The workstation may further comprise a holder for the hand held imaging device.

(58) The screen is preferably selected from a computer, a monitor, a mobile phone, a tablet and a laptop, most preferably a software device selected from a computer, a mobile phone, a tablet and a laptop. Preferably, the screen can be used separately or in conjunction with the microscope.

(59) The base preferably includes cable storage. Preferably, the power inputs for the hand held imaging device and the screen are integrated into the unitary base, such that it is only necessary to connect the base to a power source in order to power all of the components.

(60) The components of the workstation, for example the hand held imaging device, the screen, the optional holder and the base, are preferably encased in the same material as the housing (1) of the hand held imaging device. Thus the components of the workstation have a unified look and colour. The gripping area material may also be replicated on the base and/or screen casing.

(61) The Method

(62) A method for evaluating condition of hair and scalp using the imaging device of the present disclosure, and of recommending products appropriate to the condition of the hair comprises the steps of: 1) placing hair fibres (13) in the slot (4) and obtaining a high resolution image of the fibres; 2) placing the low magnification optic (3) onto the hair or scalp and obtaining an image; 3) using the images of steps 1) and 2) to make an assessment of the condition of the hair and/or scalp; and 4) using the assessment of step 3) to provide a product recommendation.

(63) The above method may be carried out on hair that is attached to a participant's head, or on loose (detached) hair. Where the method is carried out on hair that is attached to a participant's head, step 1) is preferably carried out on the shaft and tips of the hair fibres, and step 2) is preferably carried out at the root end of the hair.

(64) The hand held imaging device of the present disclosure is particularly useful in assessing the following aspects of hair and scalp condition. Hair alignment, cuticle condition and colour fade can be assessed along the entire length of the hair fibre. Split ends, bobbles and kinks are particularly relevant to assessment at the tip end of the hair fibre. Indicators of scalp condition such as flakes, dryness and greasiness are advantageously evaluated using the hand held imaging device of the present disclosure, as are fibre density (i.e. the number of fibres per unit area) and multiple occupancy (the number of fibres per follicle).

(65) The number of hair fibres used in the above methods is preferably from 1 to 100, more preferably from 5 to 50.

(66) A participant may monitor their hair and scalp over a period of time. A product recommended to adjust the participant's hair and/or scalp into an improved condition may be applied over the monitored period. The method given above may be repeated. This allows a consumer to evaluate effectiveness of the product or any other products that might be applied to improve the hair and/or skin (scalp) condition.