DE102020130386A1 - Method of making an eyebrow stamp and an eyebrow stamp - Google Patents

Abstract

In the case of an eyebrow stamp, which consists of a holding part and a stamp part, the stamp part is designed to be personalized. For this purpose, a 3D image of the eyebrow area is carried out with a 3D camera and the stamp part is printed out with the aid of a 3D printer. This creates an eyebrow stamp that is precisely tailored to the person in question.

Description

The invention relates to a method for producing an eyebrow stamp according to claim 1 and a corresponding eyebrow stamp.

State of the art

• Die Augenbrauenstempel orientieren sich an bestimmten, vorgegebenen Augenbrauenkonturen. Diese Konturen, wie z. B. in 8 dargestellt, passen nur bei sehr wenigen Personen.

Sind die Augenbrauenstempel zu kurz, so wird nur ein Teil der Augenbraue geschminkt, sind sie zu lang, wird die Farbe außerhalb der Augenbrauenhärchen auf die Haut geduckt. Ein weiterer Nachteil ist die Krümmung der Augenbrauenkontur. Der Augenbrauenstempel stimmt nicht mit der Augenbraue der Person überein, die Farbe wird auch außerhalb der Augenbraue gedruckt.
Ist dies der Fall, muss mit den herkömmlichen Schminkutensilien nachgearbeitet werden. Damit ist der wesentliche Zeitvorteil, den der Augenbrauenstempel bringen soll, nicht mehr gegeben.
Bekannte Produkte weisen zudem keine Härchenstuktur auf. Üblicherweise werden nur glatte flächige Schaumstoffmatten verwendet, die die Farbe auch auf die Haut zwischen den Härchen aufdruckt. Je nachdem, wie stark der Druck auf die Augenbraue erfolgt, ergibt sich ein verändertes Erscheinungsbild.From the pamphlets WO2019 / 216560A1 and KR102019732B1 different eyebrow stamps are known.
These eyebrow stamps have the following disadvantages:

• The eyebrow stamps are based on specific, predetermined eyebrow contours. These contours, such. Am 8th shown, only fit very few people.

If the eyebrow stamps are too short, only part of the eyebrow is made up, if they are too long, the color is pressed onto the skin outside of the eyebrow hairs. Another disadvantage is the curvature of the eyebrow contour. The eyebrow stamp does not match the person's eyebrow, the color is also printed outside the eyebrow.
If this is the case, you have to rework with the conventional make-up utensils. This means that the essential time advantage that the eyebrow stamp is supposed to bring is no longer given.
Known products also have no hair structure. Usually only smooth, flat foam mats are used, which also print the color on the skin between the hairs. Depending on how strong the pressure is on the eyebrow, the appearance changes.

Alternatively, there are various stencils on the market to help users get the perfect shape, as well as microblading. Thereby, wafer-thin lines are tattooed under the skin, which give the appearance of real hairs. The finer and more realistic it should look, the higher the price. On average, this varies between € 250-800. Unlike normal tattoos, my microblading is only stabbed under the second layer of skin.

The object of the invention is therefore to provide a method for producing an eyebrow stamp which does not have the above-mentioned disadvantages, which in particular does not require any post-processing during eyebrow make-up and which can be produced simply and inexpensively.

This object is achieved by the method specified in claim 1

Advantageous further developments of the invention are specified in the subclaims.

The main idea of the invention is to produce an eyebrow stamp specifically for the person. A 3D camera and a 3D printer are used for this.
With the eyebrow stamp produced according to the invention, no reworking is required when applying makeup to the eyebrows. All eyebrow hairs are exactly covered with make-up after the stamp has been used. The eyebrow stamp shows the entire eyebrow contour of the person concerned, with the corresponding eyebrow length, the width of the eyebrows and their depth. To do this, the eyebrow must be recorded individually by the person concerned and adapted to the stamp,

• Es zeigen:
  • 1 perspektivische Ansicht eines erfindungsgemäßen Augenbrauenstempel
  • 2 Seitenansicht eines Frauengesichts
  • 3 Schnitt eines Stempelteils mit gleich langen Lamellen mit einem transparenten 3D-Konturkopf in zwei Ansichten
  • 4 Seitenansicht des Stempelteils aus zwei Richtungen
  • Vorderansicht des Stempelteils und eine perspektivische Rückansicht des Stempelteils 5 3D-Darstellung des Augenbrauenstempelteils auf einer nicht transparenten 3D-Kopfkontur
  • 6 Lamellenstruktur des Stempelteils in perspektivischer Ansicht und teilweise im Schnitt
  • 7 herkömmliche Augenbrauenstempel sowie eine Frau die einen derartigen Augenbrauenstempel anwendet
  • 8 verschiedene typisierte Augenbrauenformen

The invention is explained in more detail below using an exemplary embodiment:

• Show it:
  • 1 perspective view of an eyebrow stamp according to the invention
  • 2 Side view of a woman's face
  • 3 Section of a stamp part with lamellas of the same length with a transparent 3D contour head in two views
  • 4th Side view of the stamp part from two directions
  • Front view of the stamp part and a perspective rear view of the stamp part 5 3D representation of the eyebrow stamp part on a non-transparent 3D head contour
  • 6th Lamellar structure of the stamp part in a perspective view and partially in section
  • 7th conventional eyebrow stamps as well as a woman who uses such an eyebrow stamp
  • 8th different typed eyebrow shapes

1 perspective view of an eyebrow stamp according to the invention with lamellae. This eyebrow stamp according to the invention is produced by the following processes. The procedure has the following procedural steps:

First, the eyebrow area of the person concerned is recorded with a 3D camera.

The contour of the eyebrows is thus available in its 3-dimensional form. Common systems have been on the market for a long time.
Stereo cameras or cameras with time of flight (TOF) are used to record 3D images. It is also possible to take the recordings with two separately placed cameras and then convert them into a 3D image. The resolution or the accuracy must be selected accordingly for the eyebrow contour. Newer smartphones and tablets can display the recordings perfectly via APPs as in 2 shown.

This means that every user can create a 3D image himself and forward the data for further processing. This is done either automatically from the APP or the data is sent via a cloud server to a central point for further processing. It is still possible to send the data by email.

As an example, a surface scan with an acceptable resolution was recorded with the Scandypro APP. The scan file is then saved as an .OBJ file. In combination with an image and the surface scan, the correct shape of the eyebrows can be analyzed. The scan is imported into Solidworks and, with the help of the surface assistant, a network with thousands of polygons is created, which is then changed into a surface ( 3 ).

The eyebrow shape is worked out using the photo and constructed in a linear building object, also using Solidworks. The created surface serves as a cut surface through the linear construct in order to reproduce the individual shape as in 4th as 5 shown.

For reasons of cost, the eyebrow stamp is designed in two parts, a person-specific stamp part and a holding part. This means that the entire eyebrow stamp does not have to be printed, only the person-specific stamp part.

After the recording, the 3D print file for the stamp part is generated from the 3D image file. The stamp part is used to hold the liquid or powdery make-up and has a contour that exactly corresponds to the recorded contour of the person's eyebrow

With the help of a 3D printer, the stamp part is printed out according to the 3D print file. The following methods can be used.

FDM process

The FDM method (Fused Disposition Modeling) is currently one of the cheapest ways to create three-dimensional objects. In this process, filament is passed through a heated extruder and then applied layer by layer on a platform. Depending on the printer, either the nozzle and / or the platform on which the building is being built is moved. The material needs some time to harden and the printing time is adjusted accordingly. As soon as the previous layer has cooled down, the next layer can be applied. In order to be able to create overhang structures, support material is used in an additional extruder. These can later be melted away with.

SLS procedure

The basis of the so-called SLS (Selective Laser Sintering) is powder, which is fused in a protective atmosphere by means of a high-performance laser (CO2 laser). The powder is hardened layer by layer in the basin. Between these layers, a squeegee moves across the build space, creating a fresh, extremely thin layer of powder, which can then be hardened again. The sum of the several layers results in a complete 3D object. The main advantage of this printing process is that no support material has to be used, as the squeegee layer is applied evenly. In addition to plastics, this process can also be used to process metals, ceramics and / or sand

SLA procedure

The SLA process (stereolithography) works with liquid photopolymer. The synthetic resin, which is in a basin, has the special property of solidifying after it has been illuminated for a certain time. In this system, the printing plate is the moving part, it moves down into the synthetic resin basin and a laser hardens the plastic on the plate. The movable plate then moves upwards so that the liquid resin can collect again. This process is repeated layer by layer until the 3D object is ready. Then it has to be completely cured with pressure in an exposure chamber and support material has to be removed by hand

7th shows conventional eyebrow stamps as well as a woman using such an eyebrow stamp. These conventional eyebrow stamps have smooth, flat foam mats which are fixed to a corresponding holding part. 8th shows 6 different typified eyebrow shapes according to which conventional eyebrow stamps are manufactured.

In the case of the eyebrow stamp according to the invention, which consists of a holding part and a stamp part, the stamp part is designed to be personalized. For this purpose, a 3D image of the The eyebrow area of the person concerned is carried out with a 3D camera and the stamp part is printed out with the aid of a 3D printer. This creates an eyebrow stamp that is precisely matched to the eyebrow contour of the person concerned. The main idea of the invention is to produce an eyebrow stamp specifically for the person. A 3D camera and a 3D printer are used for this.

With the eyebrow stamp produced according to the invention, no reworking is required when applying make-up to the eyebrow area. All eyebrow hairs are exactly and evenly covered with make-up after the stamp has been used. The eyebrow stamp according to the invention is an exact image of the entire eyebrow contour of the person concerned, with the corresponding eyebrow length, the width of the eyebrows and their depth profile.

QUOTES INCLUDED IN THE DESCRIPTION

This list of the documents listed by the applicant was generated automatically and is included solely for the better information of the reader. The list is not part of the German patent or utility model application. The DPMA assumes no liability for any errors or omissions.

Patent literature cited

• WO 2019/216560 A1 [0002]
• KR 102019732 B1 [0002]

Claims (5)

A method for producing an eyebrow stamp, characterized by the following method steps: A) capturing the eyebrow area of a person with a 3D camera B) generating a 3D print file for a stamp part of an eyebrow stamp, which has a holding part and the stamp part, from the 3D image file, wherein the stamp part serves to receive the liquid or powdery make-up and has a contour that corresponds to the recorded contour of the person's eyebrow C) Printing the stamp part from the 3D print file with the aid of a 3D printer D) Assembling the stamp part and the Holding part Eyebrow stamp according to the procedure Claim 1 , the contour of the eyebrow stamp being person-specific. Eyebrow stamp Claim 2 , characterized in that the eyebrow stamp consists of a holding part and a personalized stamp part and the stamp part has several narrow lamellae. Eyebrow stamp Claim 3 , characterized in that the slats do not exceed a thickness of 0.48 mm, the distances between the slats and the curves of the slats being personalized. Eyebrow stamp Claim 3 or 4th , characterized in that the leading edges of the lamellae correspond to the general contour of the eyebrow growth.

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