Method for producing an eyebrow stamp and an eyebrow stamp

Abstract

An eyebrow stamp, which consists of a holder and a stamping part, features a personalized stamping part. This is achieved by taking a 3D scan of the eyebrow area with a 3D camera and then printing the stamping part using a 3D printer. This process creates an eyebrow stamp that is precisely tailored to the individual.

Description

[0001] The invention relates to a method for producing an eyebrow stamp according to claim 1 and to a corresponding eyebrow stamp. State of the art

[0002] Various eyebrow stamps are known from the publications WO 2019 / 216 560 A1 and KR 10 2019 732 B1.

[0003] These eyebrow stamps have the following disadvantages: The eyebrow stamps are based on specific, predetermined eyebrow contours. These contours, such as those shown in... Fig. The 8 shown only fit very few people.

[0004] If the eyebrow stamps are too short, only part of the eyebrow will be made up; if they are too long, the color will be pressed onto the skin outside the eyebrow hairs. Another disadvantage is the curvature of the eyebrow contour. The eyebrow stamp doesn't match the person's eyebrow, and the color is also printed outside the eyebrow area.

[0005] If this is the case, you have to touch up the makeup using conventional methods. This negates the significant time advantage that the eyebrow stamp is supposed to offer.

[0006] Furthermore, well-known products lack a hair-like texture. Typically, only smooth, flat foam pads are used, which also press the color onto the skin between the hairs. Depending on the pressure applied to the eyebrow, the resulting appearance varies.

[0007] Alternatively, there are various stencils on the market designed to help users achieve the perfect shape, as well as microblading. This involves tattooing ultra-fine lines under the skin, creating the appearance of real hairs. The finer and more realistic the look, the higher the price. On average, this ranges from €250 to €800. Unlike regular tattoos, my microblading is only applied below the second layer of skin.

[0008] The website https: / / www.media-hs.de / 2019 / 10 / 11 / leonie-fensterle-schafft-es-insfinale-der-pumundus-callenge-2019 / reveals an eyebrow stamp that is, however, complex to produce.

[0009] The object of the invention is therefore to provide a method for producing an eyebrow stamp which does not have the aforementioned disadvantages, which in particular does not require any post-processing when applying eyebrow makeup and which is easy and inexpensive to produce.

[0010] This problem is solved by the method specified in claim 1.

[0011] Advantageous further developments of the invention are specified in the dependent claims.

[0012] The core idea of ​​the invention is to produce a person-specific eyebrow stamp. This is achieved using a 3D camera and a 3D printer.

[0013] With the eyebrow stamp manufactured according to the invention, no touch-ups are required when applying eyebrow makeup. All eyebrow hairs are precisely covered with makeup after the stamp is used. The eyebrow stamp reflects the entire eyebrow contour of the individual, including the corresponding eyebrow length, width, and depth. To achieve this, the individual's eyebrow must be precisely measured and then aligned with the stamp.

[0014] The invention is explained in more detail below using an exemplary embodiment:

[0015] They show: Fig. 1 Perspective view of an eyebrow stamp according to the invention Fig. 2. Side view of a woman's face Fig. 3 Section of a stamp part with equally long lamellae using a transparent 3D contour head in two views Fig. 4 Side view of the stamp part from two directions Front view of the stamp part and a perspective rear view of the stamp part Fig. 5 3D representation of the eyebrow stamp part on a non-transparent 3D head contour Fig. 6 Lamellar structure of the stamp part in perspective view and partially in section Fig. Seven conventional eyebrow stamps and a woman using one. Fig. 8 different typified eyebrow shapes

[0016] Fig. 1 Perspective view of an eyebrow stamp with lamellae according to the invention. This eyebrow stamp according to the invention is manufactured using the following methods.

[0017] The procedure comprises the following steps: First, the eyebrow area of ​​the person in question is captured with a 3D camera.

[0018] This defines the contour of the eyebrows in its three-dimensional form. Common systems have been on the market for a long time.

[0019] To capture 3D images, stereo cameras or time-of-flight (TOF) cameras are used, for example. It is also possible to capture the images with two separately placed cameras and then convert them into a 3D image. The resolution or accuracy must be selected accordingly for the eyebrow contour. Newer smartphones and tablets can perfectly display the images via apps, as in... Fig. 2 shown.

[0020] This allows any user to create their own 3D image and forward the data for further processing. This can be done automatically from within the app, or the data can be sent via a cloud server to a central location for further processing. It is also possible to send the data via email.

[0021] As an example, a surface scan with an acceptable resolution was taken using 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 a mesh with thousands of polygons is created using the Surface Wizard, which is then converted into a surface ( Fig. 3).

[0022] The eyebrow shape is developed using the photograph and constructed as a linear object in SolidWorks. The resulting surface serves as the intersection of the linear construct to reproduce the individual shape as shown in the image. Fig. 4 as well Fig. 5 shown.

[0023] For cost reasons, the eyebrow stamp is made in two parts: a person-specific stamp part and a holding part. This means that only the person-specific stamp part needs to be printed, not the entire eyebrow stamp.

[0024] After the scan, the 3D image file is used to generate the 3D printing file for the stamp component. The stamp component is designed to hold liquid or powder makeup and has a contour that precisely matches the captured contour of the person's eyebrow.

[0025] The stamp part is printed using a 3D printer according to the 3D print file. The following methods can be used. FDM process

[0026] Fused Disposition Modeling (FDM) is currently one of the most cost-effective methods for creating three-dimensional objects. In this process, filament is fed through a heated extruder and then deposited layer by layer onto a build platform. Depending on the printer, either the nozzle and / or the build platform is moved. The material requires time to cure, and the printing time is adjusted accordingly. Once the previous layer has cooled, the next layer can be applied. To create overhangs, support material is used in a separate extruder. This support material can later be melted away. SLS process

[0027] The basis of the so-called SLS (Selective Laser Sintering) process is powder that is fused in a protective atmosphere using a high-power laser (CO2 laser). The powder is solidified layer by layer in the vat. Between these layers, a reed blade moves across the build chamber, creating a fresh, extremely thin layer of powder that can then be solidified again. The sum of these numerous layers results in a complete 3D object. The key advantage of this printing method is that no support material is required, as the reed blade layer is applied evenly. In addition to plastics, this process can also be used to process metals, ceramics, and / or sand. SLA procedure

[0028] The SLA (stereolithography) process uses liquid photopolymer. The resin, which is contained in a vat, has the unique property of solidifying after being exposed to light for a certain period. In this system, the build plate is the moving part; it descends into the resin vat, and a laser hardens the resin on the plate. The build plate then rises, allowing the liquid resin to collect again. This process is repeated layer by layer until the 3D object is complete. Afterward, the object must be fully cured in an exposure chamber, and the support material must be removed manually.

[0029] Fig. Figure 7 shows conventional eyebrow stamps and a woman using one. These conventional eyebrow stamps consist of smooth, flat foam pads attached to a corresponding holder. Fig.Figure 8 shows 6 different typified eyebrow shapes according to which conventional eyebrow stamps are manufactured.

[0030] In the eyebrow stamp according to the invention, which consists of a holding part and a stamp part, the stamp part is personalized. For this purpose, a 3D scan of the person's eyebrow area is taken with a 3D camera, and the stamp part is printed using a 3D printer. This creates an eyebrow stamp that is precisely tailored to the person's eyebrow contour. The essential idea of ​​the invention is to produce a person-specific eyebrow stamp. For this purpose, a 3D camera and a 3D printer are used.

[0031] With the eyebrow stamp produced according to the invention, no touch-ups are required when applying makeup to the eyebrow area. After using the stamp, all eyebrow hairs are precisely and evenly covered with makeup. The eyebrow stamp according to the invention is an exact replica of the entire eyebrow contour of the person in question, including the corresponding eyebrow length, width, and depth.

Claims

[1] Method for producing an eyebrow stamp, which is manufactured according to the following process steps: A) Capturing a person's eyebrow area with a 3D camera B) Generation of a 3D print file for a stamp part of an eyebrow stamp, comprising a holder part and the stamp part, from the 3D image file, wherein the stamp part serves to hold the liquid or powdered makeup and has a contour that corresponds to the captured contour of the person's eyebrow C) Printing the stamp part from the 3D print file using a 3D printer D) Assembling the stamp part and the holding part the contour of the eyebrow stamp is person-specific and The eyebrow stamp consists of a holding part and a personalized stamp part, and the stamp part has several narrow lamellae. [2] Eyebrow stamp according to claim 1, characterized bythat the slats do not exceed a thickness of 0.48 mm, with the spacing between the slats and the curvature of the slats being personalized. [3] Eyebrow stamp according to claim 1 or 2, characterized by that the leading edges of the lamellae correspond to the general contour of the eyebrow growth.

Images