KR101845220B1 - Recording device for recording fingerprints - Google Patents

Abstract

The present invention relates to an apparatus for recording the linear structure of a human body part. The apparatus includes a recording area in which a body part to be recorded can be positioned in a contactless manner. A body region illumination and detection region including at least one illumination member for illuminating a body region and at least one detection means for recording an image of the body region are disposed apart from the recording region. A transparent protective body is disposed between the recording area and the body part, the illumination and the detection area.

Description

[0001] The present invention relates to a recording device for recording fingerprints,

The present invention relates to an apparatus for recording line structures of individual body parts, such as individual or multiple fingers or the palm of a hand, the apparatus comprising a recording area on which a body part to be recorded can be positioned in a contactless manner. The apparatus also includes a body region illumination and detection region disposed spaced apart from the recording region, wherein the body region illumination and detection region includes at least one illumination member for illuminating a body region, And at least one detecting means.

It is known in the prior art to position body parts, such as one or more fingers or palms, in a recording area in a contactless manner. The device is selected such that the body extent connected to the body part is supported or guided in a manner suitable for recording the body part, its line structure, and not on a plate or the like. Placing a finger on the plate distorts the record.

It is an object of the present invention to provide as good a protection as possible of an electronic device, that is, an electronic device or electronic circuit of a device according to the present invention.

An object of the present invention is solved by the features disclosed in claim 1. On the basis of the aforementioned prior art, a protective body is proposed in which the protective body is at least transparent or open to the illumination member or the detection means, and the protective body also protects the electronic component or circuit of the illumination member or detection means.

The protective body provided here does not have to be completely formed of a transparent material, and it is sufficient that transparency of the protective body is given to at least the optically significant region (for the detection means or the illumination member). As an alternative to transparency, it is also possible for the protective body to have a corresponding opening, for example to allow penetration of the illumination member or detection means, or to make the opaque protective body material in the region with openings optically transmissive.

An advantage of the present invention is that the electronic components can be optimally protected and the reflection problem associated with the optical components in a solution with an aperture need not be considered. In addition, the initially proposed transparent protective body according to the invention has the advantage that it is possible to completely isolate or separate the recording area from the body part illumination and detection area.

The above problem is solved by an apparatus as described above, wherein a (partially) transparent protective body is provided between the recording area and the body part illumination and detection device.

(Partial) transparent protective body is disposed between the recording area and the body part illumination and detection area such that the body part does not touch the body part illumination and detection area so that the body part is not distorted during recording.

The arrangement of the protective body proposed in accordance with the invention makes it possible, on the one hand, to protect sensitive electronic devices and optical elements, such as lighting elements or detection means (cameras), on the one hand, Protected from electronic or optical elements. The protection function is given in two directions. On the one hand, intentional or unintentional damage to the device according to the invention is prevented by means of the proposed embodiment, and on the other hand, in a variant according to the invention, a transparent protective body The use of the device according to the invention is much more increased. According to the invention, a fully transparent or partially transparent protective body is provided, in particular in the region of the illumination member and the detection means. An embodiment of the protective body is, for example, integral. It is also possible for the protective body to be made of a plurality of members, one or more of which may be made transparent, and the transparent member may be connected to the remaining opaque protective body part.

By means of a suitable arrangement of the support area beside the recording area of the device, it is possible for the person or the user who tests it to easily use the device according to the invention and in particular to improve the positioning of the body part on or in the device, Body area support is provided adjacent to the body area.

Another aspect of the present invention is that the presence or use of a separate support is not essential and it is sufficient for the finger or body part to be inserted into the recording area without a guide.

In another variant according to the invention, the protective body is removably fixed within the device. In order to ensure the best recording quality, in a variant according to the invention the protective body is arranged to be replaceable in a simple manner so that the protective body can be easily separated for maintenance or cleaning. In another embodiment according to the invention, the protective body is provided, for example, as a mass-produced product with sufficiently good optical properties. The protective body may, for example, include a flange inserted into the device from the front and protruding outward at least partially or preferably annularly so that the protective body can be positioned correspondingly in or on the device. The flange can then be combined with the device, preferably in a simple manner, with suitable fastening means. Such a configuration is sufficiently mechanically stable and permits rapid replacement of the protective body. The protective body itself is formed, for example, as a plastic injection molded part and is at least partially transparent.

According to the invention, the recording area is arranged next to the support area of the device. The term "side" in the sense of the present invention means "side" and "above" or "below ".

In a preferred embodiment of the invention, one or more illumination members and one or more detection means are provided with one support frame, in particular a common support frame. According to the invention, it is also possible to provide one support frame for each illumination member and detection means, or one support frame for one group of illumination elements or one group of detection means, respectively. When integrating illumination members and detection means on a common support frame, it is simply possible to provide optimal optical properties for recording an image of a body part. It is clear that the present invention can also be used as one illumination member and one detection means. On the one hand, a plurality of illuminating members are provided according to the invention for the optimum illumination, on the other hand for the recorded image, and the illuminating members are optionally provided with a plurality of detecting means in the sense of the present invention .

In a preferred embodiment of the present invention, the illumination members and / or detection means are arranged substantially parallel to the upper face of the finger in the front region of the finger, on a support frame in the form of a half-bowl. In this embodiment, approximately the same structural characteristics are selected for different illumination members. Therefore, all the illumination members have similar optical problems in similar structural basic conditions, i.e., the problem of the separation of the illumination member or detection means from the upper surface of the finger.

The formation of the support frame in the form of a half-bowl in accordance with the present invention is substantially in the form of a half-bowl formed of a first (partial) cylindrical partial shell and a second (partial) rectangular partial shell connected to the front end of the first partial shell . Ideally, the lower surface of the finger away from the nail can be represented by the following two structural basic bodies. The first partial shell is cylindrical, and here it is not a completely cylindrical, but a part of the outer circumferential surface of the cylinder, for example a half shell or an angle range of 170 ° to 190 °. Another structural basic body is represented by (partially) spherical, more precisely about 1/4 spherical partial shells, which are connected to the front end of the first cylindrical partial shell. The angular extent of the second partial shell is optionally less than 90 degrees, for example 45 to 80 degrees. The spherical partial shell is disposed at the rear end of the cylindrical first partial shell as viewed in the insertion direction of the body part, particularly in the insertion direction defined by the insertion direction of the finger.

If a flexible carrier of the electronic component or circuit of the illumination member is provided and the flexible carrier can be at least partly inserted into the half-bowl form of the support frame, a very reasonable manufacture of the electronic circuit is achieved. This proposal allows the use of known methods and apparatus for the mounting of planar circuit boards and, nevertheless, the placement of circuits and electronic components in a spherically curved plane. In this case, a flexible manufacturing method is used, and a flexible, usable solution is available, which can be manufactured in a large quantity, with a correspondingly high quality.

The proposal according to the invention is formed such that at least the electronic component or circuit of the lighting member is received by a flexible carrier. For example, LEDs fabricated in SMD-technology and other electronic components provided in the same SMD-technology can be processed by SMD-technology.

In another preferred embodiment of the present invention, with respect to the half-bowl shape of the finger shaft or the support frame, the illumination members are disposed between the individual detection means in a tangential direction.

Preferably, an image of the body part, such as a finger surface, is recorded under total internal reflection. Therefore, it is preferable that the detection means and the illumination member alternate. This is arranged in a tangential direction in relation to the shaft in the form of a finger or half-bowl (in this case, which is determined by the longitudinal axis of the shell-shaped first part) in a suitable manner.

A camera, a line scan camera, a sensor, or the like is preferably provided as a detection means. Preferably, a semiconductor based solution is used to facilitate digital data processing.

As the illumination member, preferably one or more light emitting diodes or halogen or filament lamps are used. The use of light-emitting diodes (LEDs) represents a particularly high efficiency. Since the lighting members can be provided as SMD parts, they can be easily handled when mounting the circuit. Preferably, the plurality of LEDs are preferably provided as bands or rows extending parallel to the longitudinal direction of the support frame and accordingly parallel to the longitudinal direction of the half-bowl shape or parallel to the finger axis. These columns or bands are alternately assembled with the detection means, and in accordance with the invention, a plurality of bands or rows are provided between the individual detection means.

Preferably, the illumination member preferably emits substantially monochromatic light in the visible spectrum range. Of course, a monochromatic light source has a constant bandwidth. The use of LEDs with defined wavelengths based on semiconductor bandgap may be seen as a monochromatic light source in the sense of the present invention. The use of light in the visible spectrum has the advantage that additional information can be communicated to the user by the visual effect of the light of the illumination member. By illumination of the illumination member, it is signaled to the user that the recording process is in progress.

The use of monochromatic light has advantages in the evaluation of individual information. It is possible to derive different information from the surface of the body part using a filter that senses the wavelength used, respectively. As the color of the illumination member, for example, cyan, green or blue is used. In particular, the use of green light has many advantages. The green light is a symbol that gives the user confidence that the process has started ("green light") to the user. The use of green light has the advantage of producing very high contrast recording. Preferably the selectivity of the detection means is optimized for the wavelength used of the illumination member.

In a preferred embodiment of the present invention, the protective body is spaced from the recording area such that it is not in contact with the body part. The object of the device according to the invention is to record the body parts as possible without distortion. Therefore, the possibility of contact of the body part on the face of the device according to the invention must be prevented. Preferably, the protective body is spaced from the recording area so that when the finger or body part is bent it is not contacted. In addition, this structural arrangement has the advantage that sweat or other contaminants that are always present in the fingers can be delivered to the protective body with a lower probability, resulting in less transparent properties.

Preferably, the protective body is supported on the support frame and secured thereto, e.g. by means of a corresponding fixed screw. From this a very compact, space-saving configuration is given.

In another preferred embodiment of the present invention, the protective body surrounds the entire recording area, except for the supply opening to the body part. With this embodiment, on the one hand, the electronic device or the optical device of the device according to the invention is optimally protected from destruction or manipulation attempts. On the other hand, high use safety is achieved because the human body part is reliably protected from possible electrical contact and the like. The protective body comprises a feed opening, and the protective body adequately fills the internal space of the half-bowl type support frame. The feed opening is disposed in the side of the support frame away from the ball-shaped second partial shell in the longitudinal direction of the finger axis or half-bowl shape.

In a preferred embodiment of the present invention, the support frame is provided with a detection area for detection means. The support frame is formed, for example, as a relatively complex plastic injection molded part. The support frame, as described above, preferably has a half-bowl shape and has a number of problems. The support frame receives and supports the illumination member on the one hand. The detection means is supported by the support frame. The arrangement is implemented so as to obtain the optimum optical characteristics as much as possible. In addition to the use of total reflection principle, sufficient depth and unshielded illumination should be possible. As the detecting means, an optical element, such as a camera, is provided. These are generally located on the outer surface of the support frame away from the inner surface in the form of a half-bowl, since they have a certain depth. The support frame has a corresponding through-hole therethrough, and the edge of the through-hole defines a detection area for the detection means.

Reflections are made at the interface of the transparent protective body, which causes an interference white point during camera recording. If the shield is disposed in the detection area in the direction of the recording area (in the direction of the half-bow shape) in the support frame, the reflection can be prevented. The shields are disposed, for example, in the form of an edge, around the detection region to reliably shield a light beam that is reflected at an obtuse angle (rather than a light beam reflected by the body part). From this, the protective body is arranged over the inner surface of the support frame only in relatively short intervals, thereby giving the maximum possible distance between the body part in the recording area and the protective body.

In a preferred embodiment of the present invention, the protective body is supported on the support frame through the edge of the shield. This feature can be otherwise specified, i.e. the protective body can be defined to be guided at the shield or shield edge on the support frame. The support frame is preferably formed as a cylindrical half shell in said region and the protective body has a similar contour. The protective body may be inserted into the support frame to be placed on the edge of the shield. Thus, a simple assembly of the device, which must be done quickly, especially in the case of replacement, is achieved.

With regard to the embodiment of the protective body, the proposal according to the invention is very flexible. The protective body is formed, for example, of a relatively rigid material and, for example, a transparent, occasionally shock-resistant plastic is used. The protective body is formed, for example, integrally or with a plurality of cooperating or associated protective body members. The protective body is also embodied as a coating or sprayed protective layer in a variant according to the invention. It is also possible that the protective body is made of an elastic material.

In a variant according to the invention, it is proposed to form the protective body with polymethylmethacrylate (PMMA), because transparent plastic is preferably used. Of course, all other transparent plastics can be used in accordance with the present invention. As an alternative, it is also possible to form the protective body into glass or other solid with transparent properties.

Polymethylmethacrylate is already known from its use as a material for eyeglasses and the like. This material has a low weight. In addition, the material may be optionally molded and used in an injection molding process or other molding process. Thus, an optically transparent protective body closed in many respects with polymethylmethacrylate can be realized.

The protective body is also electrically insulated on the one hand to prevent a short circuit hazard in the electrical circuit and on the other hand to protect the body part from contact with the conductive parts.

According to the present invention, an elastic embodiment of the protective body is presented as an alternative, in which rubber or silicone can be used, for example. For example, a sprayed protective layer or coating (such as a lacquer) provided in a support frame is a protective body in the sense of the present invention. The protection body has the task of protecting at least the electronic element or electric circuit of the lighting member in this modification according to the present invention.

In another preferred embodiment of the present invention, a positioning system for a body part is disposed in the recording area, there is a preferred image recording area within the positioning system, limited by recording limits, And a user information providing means for setting the position of the body part.

The object of the device according to the invention is to record the body parts as sharp and with a high contrast as possible. For this purpose, it is important that the body part is positioned optimally in the recording area. Although the optical device has a specific depth, the body part can be positioned in the desired area of the recording area by a suitable user guide. To this end, the positioning system includes an image recording area limited by the recording limit. The positioning system not only monitors the plan view (perpendicular to the fingernail) for the fingers, but also observes the position setting parallel to the plane of the fingernail, preferably sideways. As a result, for example, a bent finger arranged at the center when viewed from above can be detected as a finger positioned at a right angle.

In some cases, the dual monitoring provides the combined image as information to the user.

The positioning system includes not only a device (e.g., a camera) for recording the position of the finger but also user information providing means relating to positioning of the body part with respect to the image recording area. The information providing means may be formed in a highly variable manner according to the present invention. For example, an optical, acoustical or textual information providing means is provided according to the present invention.

In a preferred embodiment of the device according to the invention, the positioning system for the body part comprises a monitor, an image of the body part in the recording area is displayed on the monitor, and the fade- Lt; RTI ID = 0.0 > optically < / RTI >

The proposal according to the present invention is not limited to the definition of the image recording area within the recording limit (optically attractive), and other methods for the definition of the image recording area are also possible. In the first-mentioned method, a simpler outline comparison is made, in which the outline of the body part is compared with the recording limit in the plan and side views, and then, when this limit is exceeded, Monitor).

As an alternative to this, it is also possible to implement the preferred image recording area as a center target, for example. In this case, the geometric center of the body part to be photographed is determined. The center is moved on the center of the image within the shooting area. In this case, for example, each direction of movement of the body part (finger) is indicated by an arrow. When the target position, and sometimes the target surface, is reached, this position is signaled in green and the recording process itself begins. For optimal spatial positioning of the body part, monitoring of the position of the body part in various directions is used. For example, body parts are monitored in plan and side views and are displayed simultaneously on an overlay-mechanism, for example on a monitor. In order to prevent the position of the fingers from being distorted by the excessively large nails often appearing for reasons of makeup, the finger image recorded in the plan view can be correspondingly corrected by the side view.

An important advantage of the present invention is that real-time image recording, real-time image processing, and real-time image information provision are performed. A number of different means are provided for image information. The invention includes transmitting information, e.g., acoustic or textual information, along with output to a monitor or other display device.

In an improvement according to the present invention, the positioning system includes a comparison algorithm, which detects the position of the body part in the recording area and compares the position of the body part with the position of the recording limit, thereby outputting auxiliary information if the recording limit is exceeded . The auxiliary information is, for example, an optical auxiliary symbol (arrow) on a monitor or the like. In order to achieve a very narrow positioning, the positioning of the body part is not calculated with all of the image data provided, but only part of the image data, depending on the possibility, only the part of the image data used for the definition of the outline of the body part Is used.

The image to be recorded for monitoring the position setting is generated by the same detection means of the device, which images the upper surface of the body part. The detecting means is preferably disposed on the lower surface of the finger, so that a complete bottom view is possible.

In another embodiment according to the present invention there is provided an apparatus comprising a lighting system, wherein the illumination system comprises an illumination member and a detection means, the illumination intensity of the illumination member and / Are matched with each other so that an image recording of as large a contrast as possible is performed. In order to achieve image recording of as large a contrast as possible in accordance with the size of the body part, the color and position of the skin surface of the body part and the reflection of light by the body part based on the basic setting of the illumination intensity and the sensitivity, Adaptive matching is achieved.

The proposal according to the present invention includes at least the following modifications. In a first variant, the sensitivity of the detection means is not adjusted, i.e. fixed; However, the illumination intensity of the illumination member changes. Based on the often desirable average value of the illumination intensity, a sample image is made and then a second image is made of the changed illumination intensity. The two images are compared with respect to contrast, and then a third image is produced as the tendency (with increasing contrast) increases. The illumination intensity in the third image was changed according to the trend. If the contrast of the third image is better than the second image, the illumination intensity is set according to the trend until a subsequent image with lower contrast appears. With this method, when sensitivity is given and the illumination intensity is changed, at least a localized area with optimal contrast appears.

Alternatively, the comparison is made with respect to the absolute contrast standard value. This is done, for example, as follows:

In the first step, the existing contrast is detected. The value is compared with an absolute contrast value as a reference value. If the difference between the measured contrast value and the absolute contrast value is within the allowed interval, the device setting is used for illumination for recording. If the measured contrast value is outside the allowed interval, the illumination intensity is corrected to improve the contrast, i.e., to approach within the allowed interval. These adaptive actions are repeated several times until an acceptable setting appears.

The algorithm can be used in the same way for applications where the illumination intensity is fixedly set and the sensitivity of the illumination member is varied.

The third application example is that the illumination intensity and the sensitivity are changed and the two parameters are changed simultaneously or sequentially (e.g., by a new illumination intensity, then with the action of sensitivity, then with the new second An illumination intensity, and a subsequent sensitivity sensitivity).

Since image recording by the detection means is performed very quickly due to the positioning system, a number of steps can be carried out for adaptive setting of optimal illumination or sensitivity within a relatively short period of time (several seconds to several seconds).

In a preferred embodiment of the present invention, there is provided a stopper for a body part inserted into a recording area. The arrangement of the mechanical stopper in this way defines the exact position of the body part in the recording area in a simple manner. The object of the preferred embodiment of the present invention is that the recording of the image of the body part in particular is not distorted by the pressure load since the protective body almost completely encloses the recording area on the one hand and the body part on the other hand does not contact the protective body . Preferably, a stopper is provided in the recording area and is supported by, for example, a protective body, but is not in the absence of a protective body in the sense of the function of the protective body. For example, the stopper is provided at the front end of the body part (finger) within the device and is designed to be formed, for example, as a pin or an inclined face. The arrangement is selected so that, for example, the stopper will only act on the front end of the nail to prevent the effect on the body surface supporting the characteristic lines. Of course, it should be noted that since the side action of the stopper with respect to the front end of the finger results in negligible distortion, it must be acceptable in the sense of the present invention. Another advantage is that the nail surface is provided with an inclined surface that forms a stopper by acting properly on the nail. The function of the stopper is not limited to the lateral or horizontal position, and the stopper can implement the vertical restriction in the same manner. A mechanically acting stopper supports the positioning of the optically supported body part in the sense of the present invention.

Further, according to the invention, the illumination member projects one or more bundles of parallel lines onto the surface of the body part, in particular the finger surface or the hand surface.

By means of the line bundles or, in particular, the two line bundles which intersect at a certain angle, i.e. form a lattice structure, the spatial arrangement and orientation of the individual surface areas of the body part is possible. Preferably for line bundles or lattice projections (which need not necessarily be formed by line bundles lying perpendicular to one another, they may intersect at an acute angle), a light color different from the light color of the illumination of the illumination member is selected do. Often, cameras with multiple color-sensing receptors are used, lattice projections used for orientation / positioning, and light colors corresponding to the color sensitivity of the camera are used; For this purpose, for example, red light is used. By using a light bundle or a lattice projection light color that is different from the light color of the illumination of the illumination area, corresponding effects and information loss are prevented. In addition, the line projection across a plurality of illumination areas of the illumination member does not hinder normal illumination situations during recording.

The present invention also relates to a method for recording the line structure of a human body part such as an individual or a plurality of fingers or the palm of a hand, wherein the image of the body part is recorded only when the body part is in the image recording area, ≪ / RTI >

Preferably, the method is carried out by the apparatus described above.

An important advantage of the method according to the invention is that it gives as large a contrast and depth as possible, i.e. a clear record of the body part.

The present invention also relates to an image recording system having an image recording with as large a contrast as possible of the body part by matching or optimizing illumination or sensitivity within the device, particularly in the recording area or simultaneously with or after positioning of the body part in the image recording area The image illumination system being activated. In this case, it has been found that, in particular, positioning of the body part can be done in the device or in the image recording area, and the optimization of the contrast for image recording can be done at the same time, and these two steps end before the recording of the image. It is desirable to basically evaluate the same image information of the detection means in a manner that the two partial steps (positioning and contrast optimization) are different. Upon monitoring the position setting, the information of the biometric is evaluated in a suitable manner (see above) and the brightness is evaluated at the time of contrast optimization.

It is also possible to develop algorithms that enable faster processing and process flow by integrating the two steps. Thereby, a number of adaptation steps for optimizing contrast can be performed, or more optimal positioning of the body part in the image recording area is possible for recording of greater contrast and depth.

In this regard, all the features and characteristics described in connection with the apparatus apply to the method according to the invention and can be used in the sense of the present invention and are considered to be open. Of course, this fact also holds in the opposite direction. That is, the structural features mentioned in connection with one method or another are also applied, claimed and disclosed to the apparatus according to the invention.

According to the present invention, the electronic device, that is, the electronic device or electronic circuit of the device according to the present invention is preferably protected as much as possible.

An embodiment of the present invention is shown in the drawings.

1 and 2 are perspective views of a support frame of a device according to the present invention, viewed from another direction.
3, 4 and 5 are a plan view (FIG. 3), a side view (FIG. 5) and a perspective view (FIG. 4) of the protective body according to the invention.
6 is a perspective view of another variant of the support frame according to the invention;
7 is a perspective view of a variant of the device according to the invention;
8 is another perspective view of the device according to the invention with the cover plate removed;

In the drawings, the same or corresponding members are denoted by the same reference numerals, so that they are not repeated unless otherwise desired.

The whole of the device 1 according to the invention is shown in Fig.

The device (1) according to the invention is characterized by a very compact construction. In the device 1 according to the invention, the recording area 10 is arranged in the lower part and the monitor 12 or other display device is accommodated in the upper part. The overall height of the device 1 according to the invention is about 30 cm to 40 cm or less.

The body part is schematically indicated by reference numeral 2. The body part may be a finger, for example. The body part (2) is inserted into the interior of the device (1) through the feed opening (42). In this way, the body part 2 reaches the recording area 10.

The feed opening 42 is restricted by the housing, that is, by the cover plate 11 having a round opening 13. Preferably, the cover plate 11 is transparent so that the light emitted by the illumination member 31 inside the body part illuminator 1 can be detected by the user from the outside.

The transparent embodiment of the cover plate 11 also has the advantage that the user's tolerance of inserting the body part 2 into the feed opening 42 is increased and the interior of the device 1 is not seen as a black hole. The process of recording the image of the body part 2 by the light appearance inside the device 1, which appears as a transparent or translucent cover plate 11 to the outside, is optically visible to the user.

Useful information is displayed to the user by the monitor 12 or other suitable display device. In the scope of the disclosure of the present invention, the display device is not limited to the use of the corresponding monitor 12, but has a number of other possibilities. This includes, for example, other acoustic or optical information means.

In particular, the monitor 12 is part of a positioning system included by the present invention, in which an image of the body part 2 in the recording area 10 is displayed on a monitor, The fade-in recording limit is provided to the monitor. Similarly, an optimal positioning of the body part 2 in the recording area 10 is implemented by means of a comparison algorithm which is part of the positioning system, for example by means of an auxiliary symbol faded into the monitor 12, ). ≪ / RTI >

A support frame 3 is disposed under the cover plate 11 and a protective body 4 is disposed in the support frame 3. [

Fig. 8 shows the apparatus 1 shown in Fig. 7 with the transparent cover plate 11 removed. It is preferable that the recording area 10 is a part of the inner chamber and that the recording area 10 is limited by the protective body 4. [ The protective body 4 encircles the recording area 10 almost completely except for the area lying on the surface of the anti-wailing wall provided with the supply opening 42. [ Due to the opening 13 in the transparent cover plate 11 (see FIG. 7), only one part of the feed opening 42 is used to feed the body part 2 into the interior of the device 1.

The protective body 4 is described in particular in Figures 3, 4 and 5.

The protective body 4 is inserted into the support frame 3, which is described in particular with reference to Figs. 1 and 2. Fig. A flexible carrier having an illumination member 31 provided as an LED is provided on the inner wall 33 of the support frame 3 which is concealed by the flange 30 of the protective body 4. [

The light emitted by the illumination member 31 is directed toward the body part 2 and reflected by the body part. The reflected light strikes the detection means 39.

The detection area of each detection means 39 is indicated by reference numeral 18. In this case, an opening is arranged in the support frame 3, and light reflected by the body part 2 is incident into the detection means 39 through the opening.

Important elements of the device according to the invention are shown in the figures. 1 and 2, the support frame 3 is shown in a perspective view. Substantially the support frame 3 is a ring-shaped, partially open body formed by a so-called half-bowl shape 32. The half-bow shape can be divided into two partial shells (34, 35).

The first (partial) cylindrical (partial) shell 34 is open frontward and has a second partially spherical partial shell 35 on its rear face. The support frame 3 is formed to surround the recording area 10, which is not essential for the present invention. The configuration is selected so that the body part, for example a finger, can be inserted from the side away from the second partial shell 35 from the front.

The inner surface 33 of the support frame 3 defines a body region illumination and detection region 30 because the illumination member 31 and the detection means 30 are provided on the inner wall 33 defining the support frame 3 And are placed and supported.

A carrier made of a flexible flat material is placed on a (partially) cylindrical or (partially) spherical inner surface 33 (first and second partial shells 34, 35), or into a half- Thereby accurately adjusting the flexible carrier of the predetermined contour.

The flexible carrier particularly supports the electronic components or circuits of the illumination member.

On the outer surface of the inner wall 33 away from the recording area 10, a fixing base 36 is provided, in particular in a cylindrical region, and detection means not shown in the base can be attached and fixed.

The inner wall 33 preferably has a through-hole 37 at the center with respect to the base 36. The through-hole 37 defines a detection area 38. The detection area corresponds to the lens width of the lens of the detection means, for example.

The recording region 10 is disposed substantially centrally within the device and the body region illumination and detection region 10 is provided in the region of the inner wall of the support frame 3 in particular.

A protective body (4) separating the recording area (10) from the body part illumination and detection area (30) according to the present invention is provided. The protective body 4 is shown, for example, in Figs. 3, 4 and 5. The protective body is a body made of clear plastic (PMMA) closed in almost quadrature, the body having a feed opening 42 on one side, and body parts (not shown here) (Not shown). A flange edge 40 surrounding the feed opening 42 in the region of the feed opening 42 is provided in the protective body 4 and the flange edge 40 comprises a plurality of securing openings 41 , The protective body 4 can be fixed to the support frame 3 of the apparatus, for example, through the fixing opening.

The protective body 4 is fitted to the partial bowl shape 32 of the support frame 3 in its shape and shape.

Fig. 6 shows a slightly different configuration of the support frame 3 proposed in accordance with the invention, of an apparatus according to the invention. The support frame 3 is formed by a plurality of modules made of an illumination member 31 which is arranged in the form of a partial bowl about the longitudinal axis 20 of the body part 2 formed as a finger. The support frame 3 shown here is divided into a cylindrical first partial shell 34 and a second (partial) ball-shaped partial base 35 connected to the region of the fingertip, i.e. to the end. Ideally, the detection means is arranged between the individual illumination members 31 and in particular the image is arranged to be recorded in total reflection. With respect to clarity, a separate arrangement of the protective body 4 is not shown in Fig.

In the present invention, individual objects included in connection with each individual object and the constitution of the claim and the citation of the claim must be protected in a split-filed manner.

The application and claims should be written in a way that does not affect protection.

Given one or more features desirable for a more detailed review, particularly for the purposes of the present invention, but given relevant prior art which is not critically important, it should be written specifically not to include such features in the independent claims.

In addition, embodiments and variations of the invention, which are illustrated in different embodiments and shown in the drawings, may be arbitrarily combined with one another. One or more of the features may optionally be interchanged with each other. These feature combinations are also disclosed.

The citations given in the dependent claims present different implementations of the subject of independent claims by the nature of each dependent claim. However, it should not be understood that this is not intended to provide unequaled protection for the features of the recited dependent claims.

Features disclosed in the specification should be claimed during the course of the method, for example, as an essential meaning of the present invention for the limitation of the prior art.

The features disclosed in the specification or the individual features of the claims, including the plurality of features, may always be included in claim 1 for the limitation of the prior art, and in particular, such features may be mentioned in connection with other features, Even when reaching particularly favorable results in connection with the present invention.

1 device
2 body parts
3 support frame
4 Protection Body
10 Recording Area
12 monitors
30 Body area illumination and detection area
31 lighting member
32 half bowl shape
34 partial shell
38 detection area
39 detection means
42 Feed opening

Claims (35)

1. A recording apparatus for recording a linear structure of a human body part,
The recording apparatus 1 includes a recording area 10 and a body part illumination and detection area 30,
The recording area 10 is disposed in the recording apparatus 1 and the body part 2 to be recorded can be positioned and projected into the recording area 10 in a contactless manner via the feed opening 42 ,
The body part (2) is inserted into the recording area (10) without a guide,
The body region illumination and detection region 30 is spaced from the recording region 10 and the body region illumination and detection region 30 includes at least one illumination member 31 for illuminating the body region 2, And at least one detection means (39) for recording an image of the body part (2)
A protective body 4 is provided which is at least transparent to the illumination member 31 or the detection means 39 or which is at least partially transparent to the illumination member 31 or to the detection means 39 And protects the electronic component or circuit of the illumination member (31) or the detection means (39)
The protective body (4) is at least partially transparent and is provided between the recording area (10) and the body part illumination and detection area (30), and the recording area (10) Separating from region 30,
Characterized in that the recording area (10) extends next to the support area of the recording device (1) and the support area is used to support a body area adjacent to the body part (2). 2. The recording apparatus according to claim 1, wherein the protective body (4) is formed of a plurality of protective body members. 3. A recording apparatus according to claim 1 or 2, characterized in that the protective bodies (4) are arranged in a detachable manner in the recording apparatus. 3. A recording apparatus according to claim 1 or 2, characterized in that the protective body (4) surrounds the recording area (10) and forms a feed opening (42) into which the body part (2) Recording device. A recording apparatus according to claim 1 or 2, characterized in that a support frame (3) is provided for said at least one illumination member (31) and said at least one detection means (39). 6. The apparatus according to claim 5, characterized in that the illumination member (31) and the detection means (39) are arranged on the support frame (3) of the half-bowl configuration (32) parallel to the upper surface of the finger And the recording medium. A flexible carrier according to claim 6, characterized in that a flexible carrier for the electronic component or circuit of the lighting member is provided and the flexible carrier is at least partly insertable into the half-bowl shape (32) of the support frame (3) Lt; / RTI > 7. A method as claimed in claim 6, characterized in that in the tangential direction of the shaft (20) of the finger or the half-bowl shape (32) of the support frame (3) Is disposed on the recording medium. 7. The recording apparatus according to claim 6, characterized in that the protective body (4) is spaced from the recording area (10) so that contact with the body part (2) is not made. 7. The apparatus according to claim 6, characterized in that the protective body (4) is supported on at least one of the support frame (3) and the housing, or the protective body (4) can be inserted into the support frame Lt; / RTI > The recording apparatus according to claim 6, characterized in that the support frame (3) is provided with a detection area (38) for the detection means (39). The recording apparatus according to claim 11, characterized in that a shielding portion is disposed in the detection area (38) in the direction of the recording area (10) in the support frame (3). 13. The recording apparatus according to claim 12, characterized in that the protective body (4) is supported on the support frame (3) through the edge of the shield. delete delete delete delete delete delete delete delete delete delete delete delete delete delete delete delete delete delete delete delete delete delete

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