Laser protection device, in particular laser protection helmet

Abstract

The invention is based on a laser protection device, in particular a laser protection helmet, having at least one optical glare protection filter (12), in particular having a nose cut-out (14); having at least one sensor unit (16) which is configured to detect an operating state and to actuate a transmittance of the glare protection filter (12) as a function of the operating state; there is at least one shield unit (18) which is configured to protect the face of a user (20) and in which at least one glare protection filter (12) is fixedly accommodated. The invention proposes that the laser protection device comprises at least one radiation protection unit (22), which extends around the glare protection filter (12) and is at least partially made of a laser absorbing material, in particular a metal material.

Description

Technical Field

[0001] The invention relates to a laser protection device, in particular to a laser protection helmet. Background Art

[0002] A laser protection device, in particular a laser protection helmet, has been proposed, which has at least one optical glare protection filter, which in particular has a nose cutout; has at least one sensor unit, which is configured to detect an operating state and control the transmittance of the glare protection according to the operating state; has at least one shield unit, which is configured to protect the operator's face and in which the at least one glare protection filter is fixedly accommodated.

[0003] The object of the invention is in particular to provide a universal device having improved properties in terms of construction. This object is achieved according to the invention by the features of claim 1, while advantageous embodiments and further developments of the invention can be found in the dependent claims. Summary of the invention

[0004] The present invention is based on a laser protection device, in particular a laser protection helmet, which has at least one optical glare protection filter, in particular with a nose cutout; has at least one sensor unit, which is configured to detect an operating state and control the transmittance of the glare protection filter according to the operating state; has at least one shield unit, which is configured to protect the operator's face and the at least one glare protection filter is fixedly accommodated therein.

[0005] The present invention proposes that the laser protection device comprises a radiation protection unit which extends around the glare protection filter and is formed at least partially from a laser absorbing material, in particular a metallic material.

[0006] A "laser protection device" here refers in particular to a device designed to protect a user from excessive brightness and / or sparks and / or laser beams, in particular laser welding beams. Preferably, this refers in particular to a device for protecting the eyes and / or facial area of ​​a user during welding and / or grinding. Preferably, this refers in particular to a glare protection device, which is particularly used to protect the eyes of a user at least during welding, in particular during laser welding. Various embodiments of the laser protection device that are considered advantageous by a person skilled in the art are conceivable, for example as a laser welding helmet, as a laser welding visor, as a laser welding mask and / or as a laser welding protective shield. In addition, here, an "optical glare protection filter" refers in particular to an optical filter, which is particularly formed as a protective glass and / or protective plastic glass. Preferably, this refers in particular to an optical filter whose transmittance is realized as adjustable. Preferably, this refers in particular to an optical welding protection filter with automatic darkening, in particular a laser welding protection filter. Particularly preferably, the glare protection filter comprises at least one liquid crystal plane that is switchable in transmittance. Various embodiments of the optical glare protection filter are conceivable, which will be of advantage to the person skilled in the art, but in particular this means an ADF, also referred to as an "automatic darkening filter" or "automatic welding machine protection filter". Furthermore, a "nose cutout" here particularly refers to an insignificant recess in an at least partially transparent partial area of ​​the glare protection filter, which recess is at least partially configured to at least partially accommodate the nose of a user in at least one operating position of the laser protection device. Preferably, the cutout is surrounded by a material subarea of ​​the glare protection filter, in particular an at least partially translucent subarea, in at least one point in at least one plane, in particular parallel to a main extension plane of the glare protection filter, over an angular range of at least 180°. Preferably, in at least one operating position of the laser protection device, the glare protection filter engages around the nose of the user. Particularly preferably, the vertical extent of the nose cutout is at least 10%, preferably at least 30%, preferably at least 50% and particularly preferably at least 55% of the vertical extent of the glare protection filter. A "sensor unit" is to be understood here as a unit which is configured to detect at least one characteristic variable and / or physical property, wherein the detection can take place actively, in particular by generating and sending an electrical measurement signal, and / or passively, in particular by detecting a change in a characteristic of a sensor component. Various sensor units are conceivable which appear to be advantageous to a person skilled in the art. Preferably, the sensor unit comprises in particular at least one photocell. Preferably, the photocell is in particular configured at least for the optical detection of an electric arc. Furthermore, in this context, a "shield unit" is to be understood as a unit which is arranged in front of the face of a user in the normal operating position. Preferably, this is to be understood as a unit which, in the operating position of the laser protection device, in particular covers at least a large part of the face of the user.Preferably, this refers in particular to a unit which is configured for face protection, for example to protect against flying sparks. Preferably, the shield unit is configured in particular to form a protective barrier between the working area and the face of the user. "Configured" refers in particular to specially programmed, designed and / or equipped. "An object is configured for a specific function" is to be understood in particular to mean that the object realizes and / or performs this specific function in at least one state of use and / or operating state.

[0007] A "radiation protection unit" is to be understood here in particular as a unit configured to protect the eyes of a user from radiation, in particular laser radiation, which radiation, in particular laser radiation, is directed to at least one eye of the user through an optical glare protection filter. Preferably, the radiation protection unit is configured to protect the peripheral field of view and / or the face of the user from laser radiation. The radiation protection unit is in particular configured to shield the eyes of the user in the area around the optical glare protection filter. The radiation protection unit is in particular configured to be impermeable to laser radiation. On the contrary, laser radiation is particularly capable of penetrating the shield unit. "Laser absorbing material" here refers in particular to a material that, at least in a limited wavelength range, in particular completely absorbs and / or reflects laser radiation. Different materials can be considered here, which are meaningful to a person skilled in the art, such as metal materials, in particular aluminum and / or aluminum alloys. Preferably, the laser absorbing material is at least substantially, in particular completely, impermeable to laser radiation.

[0008] The laser protection device according to the invention can advantageously protect workers during laser action, in particular during laser welding. In particular, damage to the eyes of the user due to an incorrectly guided laser beam can be avoided. At the same time, in particular, mechanical protection of the user's face can also be achieved, for example against flying parts or sparks. In addition, an advantageously high level of operating and / or wearing comfort can be achieved.

[0009] In addition, it is proposed that the radiation protection unit comprises at least one radiation protection wall, which extends around the glare protection filter and is composed of a laser absorbing material, in particular a metal material. The radiation protection wall is particularly formed as a shaped sheet metal part and / or as a casting, which extends around the optical glare protection filter at the peripheral edge of the optical glare protection filter. Preferably, the radiation protection wall directly adjoins the glare protection filter. The radiation protection wall can be particularly completely composed of metal or, for example, composed of a composite material. Preferably, the radiation protection wall is particularly implemented as a narrow circumferential web, which is configured to extend towards the user's face in the worn state. This particularly allows providing an advantageously safe and lightweight radiation protection unit.

[0010] Furthermore, it is proposed that at least one radiation protection wall consists of aluminum and / or an aluminum alloy. Preferably, the radiation protection wall consists completely of aluminum or an aluminum alloy. However, other materials are also conceivable, which is advantageous for a person skilled in the art. This allows in particular to provide an advantageously safe and lightweight radiation protection unit.

[0011] In addition, it is proposed that the at least one radiation protection wall extends into the interior of the shield unit at least substantially perpendicularly to the main extension plane of the glare protection filter. Preferably, in the worn state, at least one radiation protection wall protrudes into the interior of the shield unit toward the user's face at least substantially perpendicularly to the main extension plane of the glare protection filter. The term "substantially perpendicular" is here particularly intended to define the orientation of a direction relative to a reference direction, wherein the direction and the reference direction have an angle of 90° when viewed in the projection plane and the angle has a maximum deviation of in particular less than 16°, advantageously less than 12°, preferably less than 8° and particularly advantageously less than 2°. The "main extension plane" of the structural unit is particularly intended to be understood as a plane parallel to the largest side of the smallest imaginary cuboid that just completely surrounds the structural unit, and it extends in particular through the center point of the cuboid. The radiation protection wall particularly forms a nose cutout, in which the radiation protection wall has a reduced height. Next to the nose cutout, the radiation protection wall particularly has an at least approximately constant height. This particularly allows for an advantageously safe shielding to be provided. In particular, an advantageously safe radiation protection unit can be provided. Furthermore, an advantageously high wearing comfort can be provided.

[0012] In addition, it is proposed that at least one radiation protection unit includes at least one shield insert, which is composed of a laser absorbing material, in particular a metal material. Preferably, the shield insert is at least mostly composed of aluminum and / or an aluminum alloy. The shield insert is particularly directly connected to the shield unit and strengthens the shield unit. Preferably, the shield insert forms a double-walled design of the shield unit regionally. Preferably, the shield insert adjoins the shield unit on the inner side of the shield unit, wherein the shield insert particularly follows the shape of the shield unit. In addition, it is proposed that the shield insert is arranged in the user's mouth area, behind the shield unit. In particular, the shield unit includes a forehead area, a chin area and an eye area arranged between the forehead area and the chin area. The forehead area, the chin area and the eye area are preferably implemented in one piece. Preferably, the forehead area and the chin area are shaped in a substantially convex manner on the outside away from the user's face. In particular, the shield insert is arranged in the chin area of ​​the shield unit. This particularly allows for providing advantageously safe shielding. In particular, an advantageously safe radiation protection unit can be provided. Furthermore, an advantageously high level of wearing comfort can be provided.

[0013] Furthermore, it is proposed that the radiation protection unit is different from the shield unit. The radiation protection unit is in particular realized by a separate component. The radiation protection unit is in particular connected to the shield unit. The radiation protection unit is in particular connected to the shield unit via a protective box. The shield unit is in particular composed of a material different from the radiation protection unit. In particular, the shield unit is at least partially composed of plastic. Preferably, the shield unit is completely composed of plastic. The radiation protection unit is in particular detachably connected to the shield unit. This in particular allows an advantageous modular design of the laser protection device to be provided. In particular, an advantageous protection of the user can be achieved.

[0014] Furthermore, it is proposed that the laser protection device comprises a head fastening unit for fastening to the head of a user, and comprises an adjustment unit, by means of which the position of the at least one shield unit is achieved so as to be movable in a defined manner relative to the at least one head fastening unit. Here, a "head fastening unit" refers in particular to a unit which is configured to fasten the laser protection device, in particular to the head of a user. For this purpose, the unit is preferably configured to engage at least partially around the head of the user. Here, "engage at least partially around" refers in particular to the head being surrounded by the head fastening unit in at least one plane within an angular range of at least 160°, preferably at least 180°, preferably at least 270° and particularly preferably at least 360°. Particularly preferably, the head fastening unit is configured in the normal operating state to rest at least on the forehead and the back of the head of the user. Furthermore, here, an "adjustment unit" refers in particular to a unit, by means of which the position of the at least one shield unit is achieved, in particular manually, so as to be adjustable in a defined manner relative to the at least one head fastening unit. Preferably, the adjustment unit comprises at least one adjustment member, by which the user can change the position and / or situation of the shield unit relative to at least one head fastening unit in a defined manner. Particularly preferably, the adjustment unit is particularly configured at least to guide the movement of at least one shield unit relative to at least one head fastening unit in a defined manner. In principle, it is also conceivable that the shield unit moves directly relative to the head fastening unit, wherein the movement is particularly guided in a defined manner by the adjustment unit. "Defined" should be understood in particular as guiding the movement of the shield unit. Preferably, this also means that the limits of the movement of the shield unit relative to at least one head fastening unit are predetermined by the adjustment unit. Particularly preferably, this particularly means that the shield unit can be fixed relative to at least one head fastening unit, particularly lockable in multiple positions, particularly within the limits of its movability. This particularly allows an advantageously variable adjustment of the position of the shield unit. In particular, this allows the shield unit to be optimally positioned in a user-specific manner. Therefore, the optical glare protection filter can preferably be realized as advantageously small and / or the field of view can be realized as advantageously large.

[0015] Furthermore, it is proposed that the direct distance between the user's eyes and the optical glare protection filter is realized to be adjustable by means of at least one adjustment unit. Preferably, the position of the at least one shield unit is realized to be fixable in at least two operating positions by means of at least one adjustment unit relative to at least one head fastening unit. "Operating position" here refers in particular to a position of the shield unit in which the shield unit performs and / or can perform a predetermined protective function. Preferably, this refers in particular to a position in front of the user's face in which the shield unit is arranged. Particularly preferably, the difference between the at least two fixable operating positions is in particular the distance between the optical glare protection filter and the user's eyes and / or the angle between the shield unit and the head fastening unit and / or the height at which the optical glare protection filter is arranged relative to the user's head. Preferably, during operation, the distance between the user's eyes and the optical glare protection filter is adjustable perpendicular to the head axis by means of at least one adjustment unit. Preferably, during operation, the distance between the user's eyes and the optical glare protection filter is adjustable approximately perpendicular to the main extension plane of the glare protection filter by means of at least one adjustment unit. "Direct distance" here refers in particular to the distance between the eye of the user and the optical glare protection filter during operation, i.e. in the case of direct eye contact. This in particular allows an advantageously variable adjustment of the position of the shield unit to be achieved. Preferably, this allows the shield unit to be optimally positioned in a user-specific manner. In this way, the longitudinal position of the optical glare protection filter can advantageously be adjusted to the head circumference and comfort of the welder. Furthermore, this allows an optimal adaptation of the longitudinal position of the optical glare protection filter for glasses wearers. The closer the optical glare protection filter is arranged to the face, the larger the field of view of the user.

[0016] Furthermore, it is proposed that at least one radiation protection unit comprises at least one face stop which is configured to contact the face of the user in the end position of the radiation protection unit. A "face stop" in this context refers in particular to a stop which is configured to contact the face of the user to define the final position of the radiation protection unit relative to the face of the user. Preferably, this refers in particular to a stop whose end position depends on the shape of the user's face. Particularly preferably, this refers in particular to a stop in which the stop position is defined by the contact between the face and the face stop. This allows a reliable definition of the end position of the radiation protection unit. Furthermore, in this way, the radiation protection unit can be reliably brought into an operating position. In particular, this allows an optimal positioning of the radiation protection unit relative to the face of the user to be achieved. This in turn allows an optimal shielding to be achieved. Preferably, a face-specific stop can be provided. Preferably, the at least one face stop is formed by a nose support which is configured to contact the nose of the user in at least one operating position. Preferably, in at least one operating position, the nose support is configured to contact the bridge of the nose of the user. Preferably, in at least one operating position, the nose support is configured to contact the nose cone of the nose of the user. Particularly preferably, the nose support is formed by a glasses-like nose support. Preferably, the nose support comprises at least one nose pad. Preferably, the nose support comprises at least two nose pads. Particularly preferably, the position and / or the situation of the nose pads are adjustable. The nose support is particularly adapted to the shape of the nose. This allows a reliable definition of the end positions of the shield unit. In particular, this allows an optimal positioning of the radiation protection unit relative to the face of the user to be achieved. Preferably, the position of the shield unit can be oriented relative to the center of the face. Reliable positioning of the radiation protection unit relative to the eyes of the user can be achieved. Furthermore, at least a small part of the weight of the laser protection device can be supported on the nose. This in particular allows avoiding a downward sliding of the laser protection device during operation.

[0017] Furthermore, the invention is based on a radiation protection unit of a laser protection device. The radiation protection unit can be connected in particular in a replaceable manner to a hood unit of the laser protection device.

[0018] The laser protection device according to the present invention should not be limited to the above-mentioned applications and embodiments. In particular, in order to realize the functions described here, the laser protection device according to the present invention may include a number of individual elements, components and units different from the number given here. BRIEF DESCRIPTION OF THE DRAWINGS

[0019] Further advantages will become apparent from the following description of the drawings. Embodiments of the invention are shown in the drawings. The drawings, the description and the claims contain many combined features. A person skilled in the art may also purposefully consider these features individually and find other advantageous combinations.

[0020] In the attached figure:

[0021] Figure 1 A schematic diagram shows a laser protection device according to the present invention, which has a shield unit, a head fastening unit, an optical glare protection filter and an attachment panel on the user's head,

[0022] Figure 2 A schematic rear view shows a laser protection device according to the invention, which has a hood unit, a head fastening unit, an optical glare protection filter and a radiation protection unit.

[0023] Figure 3 A schematic diagram shows a radiation protection unit of a laser protection device according to the present invention.

[0024] Figure 4 Another schematic diagram shows a radiation protection unit of a laser protection device according to the present invention, and

[0025] Figure 5 A schematic cross-sectional view of a laser protection device with an optical glare protection filter in a worn state is shown. DETAILED DESCRIPTION

[0026] Figure 1 The laser protection device 10 is shown on the head 30 of the user 20. The laser protection device 10 is configured to be worn by the user 20 on the head 30 during operation. Figure 1 The laser protection device 10 is shown in an operating position. The laser protection device 10 is embodied as a laser welding helmet. In principle, however, another embodiment of the laser protection device 10 which is considered advantageous by a person skilled in the art is also conceivable.

[0027] The laser protection device 10 comprises an optical glare protection filter 12. In addition, the laser protection device 10 comprises a sensor unit 16. The sensor unit 16 is configured to detect an operating state and to actuate the transmittance of the glare protection filter 12 according to the operating state. The sensor unit 16 comprises at least one sensor configured to detect a welding process or the presence of bright light that may damage or otherwise affect the eyes 34 of the user 20. The sensor of the sensor unit 16 is implemented as a photoelectric tube. However, in principle, another embodiment of the sensor of the sensor unit 16 that is considered advantageous by a person skilled in the art is also conceivable. In addition, the laser protection device 10 comprises a protective box 38. The optical glare protection filter 12 and the sensor unit 16 form part of the protective box 38. In addition, the protective box 38 comprises an electronic unit 40. The electronic unit 40 is connected to the sensor unit 16. The electronic unit 40 is configured to process the data of the sensor unit 16 and to actuate the glare protection filter 12 according to its function. The electronic unit 40 comprises a battery and / or a solar cell for power supply, the details of which are not shown.

[0028] The optical glare protection filter 12 is implemented as an electro-optical filter. The optical glare protection filter 12 is implemented as an automatic darkening filter, ADF for short. The optical glare protection filter 12 consists of several layers. The optical glare protection filter 12 is implemented as a multilayer composite material. Here, the number of layers is only exemplary and can vary in principle.

[0029] The glare protection filter 12 has a rectangular basic shape. Here, in the normal operating state, the vertical extension of the glare protection filter 12 is smaller than the horizontal extension of the glare protection filter 12. The glare protection filter 12 also includes a nose cutout 14. The nose cutout 14 is formed by a non-material recess in the material portion of the glare protection filter 12. The nose cutout 14 is formed by a non-material recess in the at least partially translucent sub-region material of the glare protection filter 12. In the operating position of the laser protection device 10, the nose cutout 14 is configured to partially accommodate the nose of the user 20. In the operating position, the glare protection filter 12 is partially engaged around the nose of the user 20 in the region of the nose cutout 14. The glare protection filter 12 has a substantially rectangular basic shape, wherein the nose cutout 14 protrudes into the rectangular basic shape. The nose cutout 14 has a substantially triangular shape. The two side faces defined by the material portion of the glare protection filter 12 have an angle of approximately 54° with one another.

[0030] Furthermore, the laser protection device 10 comprises a shield unit 18. The glare protection filter 12 is fixedly accommodated in the shield unit 18. The glare protection filter 12 is accommodated in the shield unit 18 in a positionally fixed manner. The glare protection filter 12 is mounted in a recess of the shield unit 18. The entire protection box 38 is mounted in the recess of the shield unit 18. The shield unit 18 is composed of a material that is substantially dimensionally stable. The shield unit 18 is made of plastic, which is particularly resistant to sparks and / or other influences generated during welding. The shield unit 18 is configured to cover and protect the face and / or head 30 of the user 20, in particular according to relevant standards for welding helmets. The shield unit 18 has a shape that partially adapts to the shape of the head. In the wearing state of the laser protection device 10, the shield unit 18 is partially bent around the face of the user 20. In the wearing state of the laser protection device 10, the shield unit 18 partially accommodates the face of the user 20. The shield unit 18 comprises a forehead region 44, a chin region 46 and an eye region 48 arranged between the forehead region 44 and the chin region 46. The forehead region 44, the chin region 46 and the eye region 48 are realized in one piece. The forehead region 44 and the chin region 46 are formed in a substantially convex manner on the outer side facing away from the face of the user 20. The eye region 48 comprises a receptacle for receiving the protection box 38. The eye region 48 is pressed against the receptacle of the protection box 38. The receptacle for the protection box 38 is arranged to be offset inwardly relative to the basic shape of the shield unit 18, and therefore towards the face of the user 20. The receptacle for the protection box 38 is arranged to be offset inwardly relative to the forehead region 44 and relative to the chin region 46.

[0031] The laser protection device 10 further comprises an attachment panel 42. The attachment panel 42 is connected to the shield unit 18 via a locking element not shown in detail. Preferably, the attachment panel 42 comprises two relatively positioned latch recesses, in each of which a latch element of the shield unit 18 engages in a latching manner. Due to the latch, the attachment panel 42 can be easily disassembled. This allows simple cleaning and / or simple replacement. The attachment panel 42 is implemented in a transparent manner. The attachment panel 42 is configured to protect the protection box 38. The attachment panel 42 covers the protection box 38 from the outside. This allows avoiding damage to the protection box 38. If the attachment panel 42 is damaged, it can be simply and cost-effectively replaced, in particular in contrast to the protection box 38.

[0032] Furthermore, the laser protection device 10 comprises a head fastening unit 28. The head fastening unit 28 is configured for fastening to a head 30 of a user 20. The head fastening unit 28 is implemented as a headband. The head fastening unit 28 comprises a plurality of headband elements 50, 50', which are in each case configured to extend at least partially around the head 30 of the user 20. The head fastening unit 28 comprises three headband elements 50, 50', which are respectively configured to extend in different planes around the head 30 of the user 20. The three headband elements 50, 50' are implemented in a strip-shaped manner. The first headband element 50 extends from a first common connection point 52 above an ear of the user 20 around the back of the head 30 of the user 20 to a second common connection point above the other ear of the user 20. The effective length of the first headband element 50 is adjustable. The head fastening unit 28 comprises an adjustment element 54 located on the headband element 50. The adjustment element 54 is implemented as an adjustment wheel, which is known, for example, from helmets, and by means of which the effective length of the first headband element 50 can be adjusted by rotation. The second headband element 50' extends from the first common connection point 52 over the upper head of the head 30 of the user 20 to a second common connection point above the other ear of the user 20. The second headband element 50' extends from the first common connection point 52 at an angle of approximately 120° relative to the first headband element 50. The effective length of the second headband element 50' is adjustable. For this purpose, the second headband element 50' is implemented in two parts. The two parts of the second headband element 50' are connected by an adjustable closing unit. The adjustable closing unit is implemented as a rebound closure. The third headband element extends from the first common connection point 52 around the forehead of the head 30 of the user 20 to the second common connection point above the other ear of the user 20. The third headband element extends from the first common connection point 52 at an angle of approximately 90° relative to the second headband element 50'. The three headband elements 50, 50' of the head fastening unit 28 are fixedly connected to one another via connection points 52. The head fastening unit 28 is made of partially elastic plastic. In principle, however, another material which appears to be advantageous to a person skilled in the art is also conceivable.

[0033] In addition, the laser protection device 10 comprises an adjustment unit 32. By means of the adjustment unit 32, the position of the shield unit 18 can be moved in a defined manner relative to the head fastening unit 28. By means of the adjustment unit 32, the position of the shield unit 18 can be adjusted in a defined manner relative to the head fastening unit 28. The position of the shield unit 18 is implemented to be fixable in at least two operating positions relative to at least one head fastening unit 28 by means of the adjustment unit 32. By means of the adjustment unit 32, the position of the shield unit 18 is implemented to be fixable in a defined area in any operating position relative to at least one head fastening unit 28. By means of the adjustment unit 32, the situation of the shield unit 18 in the operating position can be freely selected, in which the situation of the protection unit 18 can be fixed. The shield unit 18 is connected to the head fastening unit 28 via the adjustment unit 32. The adjustment unit 32 is connected to the head fastening unit 28 at two connection points 52, 52'. Furthermore, the adjustment unit 32 is connected to the shield unit 18 in the peripheral area of ​​the forehead area 44 of the shield unit 18. The adjustment unit 32 comprises a base element. The base element is fixedly connected to the head fastening unit 28 at a first connection point 52 of the head fastening unit 28. The adjustment unit 32 also comprises a second base element which is mirror-symmetrical to the base element. The second base element is fixedly connected to the head fastening unit 28 in a second connection point of the head fastening unit 28.

[0034] The adjustment unit 32 also includes a rotating wheel 56, which is rotatably supported on the shield unit 18. In addition, the rotating wheel 56 is guided in translation in the guide rail of the first base element. The rotating wheel 56 is guided perpendicular to the head axis in the guide rail of the first base element. The direct distance between the eyes 34 of the user 20 and the optical glare protection filter 12 is achieved so that it can be adjusted by means of the adjustment unit 32. The direct distances d1 and d2 between the eyes 34 of the user 20 and the optical glare protection filter 12 can be adjusted in the horizontal direction, i.e. perpendicular to the head axis, by means of the adjustment unit 32. The direct distances d1 and d2 between the eyes 34 of the user 20 and the optical glare protection filter 12 can be changed by means of the rotating wheel 56 of the adjustment unit 32. The position of the shield unit 18 relative to the face of the user 20 in the longitudinal direction can be changed by the rotating wheel 56. Once the desired longitudinal position is found, the position can be fixed by turning the rotating wheel 56. Furthermore, in the operating position, the angle of the shield unit 18 relative to the head fastening unit 28 is realized to be adjustable by means of the adjustment unit 32. For this purpose, the adjustment unit 32 comprises a lever 58.

[0035] The regulating unit 32 is implemented according to EP 3213726 A1. Therefore, the description of the regulating unit 32 of EP 3213726 A1 also applies to the present description and is to be considered as part of the present disclosure.

[0036] In addition, the laser protection device 10 includes a radiation protection unit 22. The radiation protection unit 22 extends around the glare protection filter 12 and is at least partially composed of a laser absorbing material, in particular a metal material. The radiation protection unit 22 includes a radiation protection wall 24, which extends around the glare protection filter 12 and is composed of a metal material. The radiation protection wall 24 is composed of aluminum and / or an aluminum alloy. The radiation protection wall 24 is made of a shaped metal sheet portion extending around the optical glare protection filter 12 at the peripheral edge of the optical glare protection filter 12. The radiation protection wall 24 extends completely circumferentially along the peripheral edge of the optical glare protection filter 12. The radiation protection wall 24 is directly adjacent to the glare protection filter 12. The radiation protection wall 24 is directly adjacent to the frame of the optical glare protection filter 12. The radiation protection wall 24 is implemented as a narrow circumferential web, which is configured to extend toward the face of the user 20 in the wearing state. The radiation protection wall 24 includes several sub-areas. The radiation shielding wall 24 comprises a left-hand and a right-hand side wall portion 84, 84', which in each case shield the field of view of the user 20 towards one side. The side wall portions 84, 84' each have a rectangular basic shape. The side wall portions 84, 84' extend in particular vertically. In addition, the radiation shielding wall 24 comprises a front wall portion 86, which shields the field of view of the user 20 towards the top. The front wall portion 86 extends substantially along the forehead of the user 20. The front wall portion 86 extends in particular horizontally. Part of the front wall 86 adjoins the side wall portions 84, 84' substantially vertically. The front wall portion 86 has a basic shape that is bent on one side. The radiation shielding wall 24 also comprises a nose wall portion 88, which shields the field of view of the user 20 from below. The nose wall portion 88 extends substantially along the cheeks and nose of the user 20. The nose wall portion 88 extends along the nasal incision 14. The nose wall portion 88 extends in particular horizontally. The nose wall portion 88 is substantially perpendicularly adjacent to the side wall portions 84, 84'. The nose wall portion 88 has a basic shape that is bent on one side. Here, the height of the web changes in a manner that the radiation shielding wall 24 at least partially follows the facial contour. The radiation shielding wall 24 particularly has a maximum height on the left and right sides of the side wall portions 84, 84', while the height in the region of the front wall portion 86 decreases continuously toward the center. In addition, the height of the radiation shielding wall 24 in the region of the nose wall portion 88 is the smallest, wherein the height of the radiation shielding wall 24 decreases continuously toward the center of the nose cutout 14. The radiation shielding wall 24 extends into the interior space of the shield unit 18 at least substantially perpendicular to the main extension plane of the glare protection filter 12. The height of the radiation shielding wall 24 therefore particularly relates to the direction perpendicular to the main extension plane of the glare protection filter 12. In the wearing state, the radiation shielding wall 24 protrudes into the interior space of the shield unit 18 toward the face of the user 20 at least substantially perpendicular to the main extension plane of the glare protection filter 12. For example, the radiation shielding wall 24 is screwed to the protective box 38.For this purpose, the radiation shielding wall 24 has fastening tabs 80, 80' on both sides, through which screws 82, 82' can be screwed to connect to the protective box 38. However, other connection techniques that are considered advantageous by a person skilled in the art are also conceivable.

[0037] In addition, the radiation protection unit 22 includes a shield insert 26, which is composed of a laser absorbing material, in particular a metal material. The shield insert 26 is at least mostly composed of aluminum and / or an aluminum alloy. The shield insert 26 is directly connected to the shield unit 18 and strengthens the shield unit. The shield insert 26 forms a regional double-wall design of the shield unit 18. The shield insert 26 is adjacent to the protection unit 18 on the inner side of the shield unit 18, wherein the shield insert 26 follows the shape of the shield unit 18. The shield insert 26 is arranged in the mouth area of ​​the user 20 behind the shield unit 18. The shield insert 26 is arranged in the chin area 46 of the shield unit 18. The shield insert 26 extends over most of the chin area 46 of the shield unit 18. The shield insert 26 extends at least partially into the nasal incision 14. The shield insert 26 is glued to the shield unit 18. However, other connection technologies that are considered advantageous by those skilled in the art are also conceivable ( Figure 2 , 3 , 4).

[0038] The radiation protection unit 22 is different from the shield unit 18. The radiation protection unit 22 is fixedly connected to the shield unit 18. The radiation protection unit 22 is fixedly connected to the shield unit 18 via a protection box 38.

[0039] The radiation protection unit 22 further comprises a face stop 36. In the end position of the radiation protection unit 22, the face stop 36 is configured to contact the face of the user 20. The stop position is particularly defined by the contact between the face and the face stop 36. Here, the stop position defines the operating position. The face stop 36 of the radiation protection unit 22 is configured for positioning the radiation protection unit 22 relative to the face of the user 20. The face stop 36 is implemented as a nose support and / or a forehead support. The face stop 36 is exemplarily implemented as a glasses-like nose support. In the operating position, the face stop 36 is configured to contact the nose and / or forehead of the user 20. In the operating position, the face stop 36 is configured to contact the bridge of the nose of the user 20. This allows the end position of the radiation protection unit 22 to be reliably defined. In particular, this allows a reliable positioning of the radiation protection unit 22 relative to the eyes 34 of the user 20 to be achieved. The face stop 36 is arranged in the region of the nose cutout 14 of the optical glare protection filter 12. In principle, however, another embodiment and / or arrangement of the face stop 36 which is considered advantageous by a person skilled in the art is also conceivable ( Figure 2 ).

[0040] Figure 5 A schematic side view of an optical glare protection filter 12 is shown. A typical incident direction 60 of electromagnetic radiation to be shielded is indicated by the direction of an arrow. The position of the user is shown by the eye 34 on the side of the optical glare protection filter 12 opposite to the incident direction 60. The optical glare protection filter 12 includes a cover plate 62. The optical glare protection filter 12 includes another cover plate 64. In addition, the optical glare protection filter 12 includes a liquid crystal cell 66 and another liquid crystal cell 68. The liquid crystal cell 66 and the other liquid crystal cell 68 are arranged between the cover plate 62 and the other cover plate 64 in the viewing direction. The cover plate 62 is arranged on the side of the optical glare protection filter 12 that is away from the user 20 in the wearing state. The other cover plate 64 is arranged on the side of the optical glare protection filter 12 that faces the user 20 in the wearing state. The cover plate 62 and the other cover plate 64 are configured to protect the liquid crystal cell 66 and the other liquid crystal cell 68 and their components. In each case, the liquid crystal cells 66, 68 have an active layer 70. The active layer 70 is configured to manipulate the polarization direction of incident light by actuation of the electronic unit 40. The active layer 70 is configured to rotate the polarization direction of the light beam depending on the applied voltage. The active layer 70 is at least partially liquid. The active layer 70 is implemented as a liquid crystal layer.

[0041] The optical glare protection filter 12 comprises a passive filter unit 72. The passive filter unit 72 comprises an absorptive infrared filter element 74. The infrared filter element 74 is realized as an absorptive glass. The infrared filter element 74 is realized integrally with the cover plate 62.

[0042] The optical glare protection filter 12 comprises an anti-reflection unit 76. The anti-reflection unit 76 has an anti-reflection coating 78. The anti-reflection coating 78 is arranged on the surface of the other cover plate 64. The anti-reflection coating 78 is arranged on the surface of the cover plate 64 facing the user 20 in the wearing state. The anti-reflection coating 78 is implemented as an interference filter. However, in principle, other embodiments of the anti-reflection coating 78 that are considered advantageous by those skilled in the art are also conceivable. In addition, a color filter can be provided on the other cover plate 64.

[0043] In particular, the further cover disc 64 is realized as an exchangeable inner protective disc, which can be exchanged for different wavelengths.

[0044] Reference numerals list

[0045] 10 Laser protection device

[0046] 12 Glare protection filters

[0047] 14 Nose incision

[0048] 16 Sensor units

[0049] 18 Shield unit

[0050] 20 users

[0051] 22 Radiation Protection Unit

[0052] 24 Radiation Shield

[0053] 26 Shield insert

[0054] 28 Head fastening device

[0055] 30 Head

[0056] 32 Adjustment units

[0057] 34 Eyes

[0058] 36 Face stop

[0059] 38 Protective box

[0060] 40 Electronic units

[0061] 42 Attachment Panel

[0062] 44 Forehead area

[0063] 46 Chin area

[0064] 48 Eye area

[0065] 50 Headband Components

[0066] 52 Connection Points

[0067] 54 Adjustment elements

[0068] 56 Rotating Wheel

[0069] 58 Leverage

[0070] 60 Incident direction

[0071] 62 Covered plate

[0072] 64 Covered Plate

[0073] 66 Liquid crystal unit

[0074] 68 Liquid crystal unit

[0075] 70th floor

[0076] 72 Filter device

[0077] 74 Infrared filter element

[0078] 76 Anti-reflection Unit

[0079] 78 Anti-reflective coating

[0080] 80 Fastening tab

[0081] 82 Screws

[0082] 84 Side wall section

[0083] 86 front wall part

[0084] 88 Nasal wall

Claims

1. A laser protection device, in particular a laser protection helmet, comprising at least one optical glare protection filter (12), the optical glare protection filter (12) in particular having a nose cutout (14); and at least one sensor unit (16), the sensor unit (16) being configured to detect an operating state and to actuate the transmittance of the glare protection filter (12) according to the operating state; The invention discloses a protective cover unit (18) having at least one protective cover unit (18) configured to protect the face of a user (20) and wherein the at least one glare protection filter (12) is fixedly accommodated in the protective cover unit (18). in, It is characterized in that The at least one radiation protection unit (22) extends around the glare protection filter (12) and is at least partially composed of a laser absorbing material, in particular a metallic material.

2. The laser protection device according to claim 1, It is characterized in that The at least one radiation protection unit (22) comprises at least one radiation protection wall (24) which extends around the glare protection filter (12) and consists of a laser absorbing material, in particular a metallic material.

3. The laser protection device according to claim 2, It is characterized in that The at least one radiation protection wall (24) consists of aluminum and / or an aluminum alloy.

4. The laser protection device according to at least claim 2, It is characterized in that The at least one radiation protection wall (24) projects into the interior of the housing unit (18) at least substantially perpendicularly to a main extension plane of the glare protection filter (12).

5. The laser protection device according to any one of the preceding claims, It is characterized in that The at least one radiation protection unit (22) comprises at least one shield insert (26) which consists of a laser absorbing material, in particular a metallic material.

6. The laser protection device according to any one of the preceding claims, It is characterized in that The shield insert (26) is arranged behind the shield unit (18) in the mouth area of ​​the user.

7. The laser protection device according to any one of the preceding claims, It is characterized in that The radiation protection unit (22) is different from the shield unit (18).

8. The laser protection device according to any one of the preceding claims, It is characterized in that The invention comprises a head fastening unit (28) for fixing on the head (30) of a user (20), and comprises an adjustment unit (32), by means of which the position of the at least one shield unit (18) is achieved so as to be movable in a defined manner relative to the at least one head fastening unit (28).

9. The laser protection device according to any one of the preceding claims, It is characterized in that A direct distance between the user's eye (34) and the optical glare protection filter (12) is achieved for adjustment by means of the at least one adjustment unit (32).

10. The laser protection device according to any one of the preceding claims, It is characterized in that The at least one radiation protection unit (22) comprises at least one face stop (36) which is configured to contact the face of a user (20) in an end position of the radiation protection unit (22).

11. A radiation protection unit of a laser protection device (10) according to any one of the preceding claims.

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