GB2588881A

GB2588881A - Metal clad electronic eyewear for protection against laser hazard

Info

Publication number: GB2588881A
Application number: GB1912138.3A
Authority: GB
Inventors: Metsios Ioannis; Jassen Venkaya Jai
Original assignee: Individual
Current assignee: Individual
Priority date: 2019-08-23
Filing date: 2019-08-23
Publication date: 2021-05-19
Also published as: GB201912138D0

Abstract

A protective eyewear device (10, Fig 2) comprises a metal frame 17 that fully covers the user’s eyes and the area around them and is capable of preventing transmission of direct laser beam radiation with a wavelength of between 20nm to 0.1mm with a spot size diameter of 2mm and a maximum average power of 10kV for a minimum duration of 3 seconds. Direct vision can be replaced by one or more digital cameras 3 located proximate the front panel 1 of the frame and a display screen 16 situated inside the frame and separated into a left and right sector (19, 20, Fig 7) associated with a left and right eye of the user. A pair of adjustable focal lenses 6 can be placed between the screen and the user’s eyes and held in place by a lens holder 18.

Description

Metal clad electronic eyewear for protection against laser hazard A protective eyewear device that uses metallic cladding to protect the wearer against laser radiation from a handheld laser processing tool and electronic monitoring and displaying components to provide vision.

Several laser applications like laser cleaning, laser coating removal and laser rust removal are currently being deployed in the industry where the laser processing tool is manually operated as a handheld device where optical power is fed by the trailing laser source. Optical power is delivered as laser radiation of wavelengths around the 1 pm spectral region but can span anywhere between 12 pm and 0.2 pm.

Recently the average optical power delivered by such a system has broken the barrier of 1 kW. The beam may be continuous wave or pulsed. Most of these applications aim to clean and resurface a metallic structure or component. Metals are inherently reflective. For example, steel is typically 50 to 70% reflective in the 1 pm wavelength region. Consequently, there is a high possibility of a high power beam deflection being directed towards the eyes of the operator of the handheld cleaning tool is now very high. The market offers typical protective safety eyewear solutions using glass or polymer which transmits visible wavelengths and blocks the laser wavelength to a high percentage. However, due to the close proximity of the common laser wavelengths with the visible wavelengths, it is nearly impossible to make a material that transmits light useful to vision but rejects harmful light at 100%. Moreover, polymer and glass based materials are not durable enough to sustain adequate protection against a laser beam of several hundred watts of average power, to allow the user to respond and avoid laser hazard. Consequently, present protective eyewear does not provide adequate level of safety during handheld laser processing with optical power close to 1kW. Operators are subjected to risk of instant or progressive damage to eyesight.

This invention describes a device that is not dependent on transparent or semitransparent material such as glass, polymer or crystal. The invention is a device, used as personal protective equipment, made of material which reflects and absorbs the laser radiation, admitting no radiation through to the user's eyes. In order for the device to allow the user to see the work and the environment around him or her, it contains one or more cameras and 1 or more monitor screens to display the camera picture in near real time. The equipment thus fully isolates the user's eyes from exposure to a direct reflection from the workpiece being processed, while providing adequate vision via electronic video systems using cameras and screens.

Consequently adequate protection in this invention is achieved by a metallic sheet offering advantages of highest absorption and reflection of electromagnetic radiation with photon energies below the x-ray range.

Current laser safety eyewear (or laser safety ***s) have a significant shortfall when used with handheld processing tools such as used for cleaning. In terms of safety, existing laser safety eyewear is constructed of transmissive material to allow visible light. The result is a small degree of the laser radiation transmitting to the user's eyes.. When this is combined with direct illumination with average powers of a few hundred watts, protection is inadequate. Furthermore, standard laser safety goggles cannot maintain protection under direct illumination for several seconds as per the latest laser safety standard recommendations. An electronic wearable visualisation device however, can be armed with reflective, absorptive, high density and radiation resistant metallic sheets that fully protect the eyes of the operator. Vision is provided by the camera and screen pair of the tablet or electronic device and relayed to the user via 2 adjustable optics. The device can be made capable of protecting against direct beam irradiation for 2 seconds and in most cases 10 seconds or more and achieving no transmission of laser radiation. The device can have several other advantages of combining electronic sensors with features of modern digital and wireless technologies with a process tool. Safety features and other features can be fully integrated into the device, by the electronics and software programs. User, process and environmental information can be projected to the user in augmented reality during the work, thus offering significantly higher utility to the user.

Exemplary arrangements of the disclosure shall now be described with reference to the drawings in which: Figure 1. Front side view of the Protective Eyewear Device [10]. The Front Protective Plate [1] is depicted with two Camera Openings accommodating the Digital Camera [2] of a typical Tablet [16] or mobile phone or a Second Camera [4] that can be incorporated with custom electronics, providing the option f stereoscopic view to the user. The Top Cover Plate [2] offers protection against radiation illuminating from the top side of the device for a variety of Lens Frame [18] positions dictated by the thickness of the Tablet [16] or other visualisation electronics. The Top Curved Edge [5] fits the wearer's forehead.

Figure 2. Rear side (users viewing side) of the Protective Eyewear Device [10]. The two Side Panels [12] protect from radiation illuminating sidewise to the user's face. The Lower Curved Edge [11] fits the wearer's nose and the cheeks curvatures. The Nose Rest [9] provides support of the device on the wearer's nose and centralisation of the view. The Focus Lenses [6] re-image the display pictures to the user's eyes. The Sizing Guides [7] allow positional adjustment of the Focus Lenses [6] against the eye to face relevant positions of the user.

Figure 3. Exploded front view of the Protective Eyewear Device [10]. It illustrates the three main components, the Protection Frame [17], Tablet [16] and Lens Frame [18], as well as the Lens Holders [14] that fit between the two vertical plates of the Lens Frame [18] and hold the Lenses [6]. The Camera Opening [13] used in the default implementation of the invention and the Digital Camera [3] positions in relevance of their parent components are depicted.

Figure 4. Exploded rear view of the Protective Eyewear Device [10]. It illustrates the three main components, the Protection Frame [17], Tablet [16] and Lens Frame [18], as well as the Lens Holders [14] that fit between the two vertical plates of the Lens Frame [18] and hold the Lenses [6].

Figure 5. Exploded side view of the Protective Eyewear Device [10]. It indicates the three main components, the Protection Frame [17], Tablet [16] and Lens Frame [18], as well as the Lens Holders [14] that fit between the two vertical plates of the Lens Frame [18] and hold the Lenses [6]. The Digital Camera [3] and Front Protective Plate [1] positions in relevance of their parent components are depicted.

Figure 6. Exploded top view of the Protective Eyewear Device [10]. It indicates the three main components, the Protection Frame [17], Tablet [16] and Lens Frame [18], as well as the Lens Holders [14] that fit between the two vertical plates of the Lens Frame [18] and hold the Lenses [6]. The Digital Camera [3] and Front Protective Plate [1] positions in relevance of their parent components are depicted.

Figure 7. Screen side view of the Tablet [16], indicating the Left Screen Sector [19] and Right Screen Sector [20] in which the screen of the Tablet [10] or mobile phone is digitally divided, each displaying a picture intended for the left and right eye of the user respectively.

Figure 8. A person while wearing the Protective Eyewear Device [10], using the head attachment straps Side Band [22] and Top Band [23], joint at the back of the wearer's head with the Band Joint [24].

Figure 9. A Semi-exploded rear view of the Protective Eyewear Device [10] and the Edge Cushion [12], fitted to protect the wearer from chaffing and scuffs. The figure indicates approximate fit of the Edge Cushion [21] on the face touching edges of the device.

The invention is a wearable visualisation device referred to as Protective Eyewear Device and illustrated in Figure 2 and 8 as item [10]. The Protective Eyewear Device [10] has a shape that covers the area around the eyes of the wearer with the intention of protecting them from laser radiation. It houses video monitoring and display electronics to reproduce a picture monitored in front of the device, onto one or more display screens [19, 20] displaying towards the eyes of the wearer. The device is armoured with metallic plates [1, 2, 12] capable or reflecting and fully blocking the specific wavelength, offering full protection to the user's eyes against laser radiation. The radiation wavelength may be in the visible, UV, N IR and far-IR spectral regions. The device is held on the head of the wearer using elastic bands [22, 23] or an adjustable strap or elastic strips of material that cling on the head or ears of the wearer or both. In the preferred implementation, the elastic bands are attached to the Side Plates [12] and the top of the Lens Frame [18] and create a T-joint [24] behind the head of the wearer.

In the preferred implementation the camera or cameras [3, 4] and the display screens [19,20] are included in a Tablet or mobile phone device [16] that is custom made for the invention or is commercially available or supplied by the user and is loaded with appropriate software. The armouring metallic plates can be constructed from highly reflective metals such as aluminium, copper, gold and silver. Alternatively the metallic plates can just coated with such highly reflective metals. The metallic plates can also consist in their bulk phase? of high density metals such as stainless or other steel, iron, nickel, chromium, tungsten, titanium, tantalum, platinum, palladium, iridium, vanadium, manganese, cobalt, rhenium, rhodium, niobium, magnesium, zinc, carbon in graphite or other forms, tin, lead and zirconium. The metallic armour can be applied at the Front Protective Plate [1] alone where the danger is greatest or over the whole structure of the device. Vision is provided by one, two three or four digital cameras situated in openings at the front like the Camera Opening [13] illustrated in Figure 1, the sides or the perimeter of the device. The area behind the cameras may also be further reinforced with metallic shielding as described above, to offer further protection and resilience against impinging radiation. The camera sensors can employ any or a combination of CMOS, MOS, CCD or micro-bolometer type technologies. Vision is delivered via the Left and Right Screen Sectors [19, 20], using LCD, OLED or other flat panel display device, as used in tablet or mobile cell-phone devices. The image displayed can be unaltered or digitally processed in live or elapsed time, paused or in video mode. Other information, shapes, designs, safety warnings, measurements, settings and status of a laser processing tool, the Protective Eyewear Device [10], the Table [16] or laser source, properties of the target material or surroundings, like temperature, humidity, ambient light, light reflected towards the user, chemical consistence, structure of the target material, surface profile of the target material, depth of coatings of the target material or bulk volume of the target material may be displayed with the image in the form of augmented reality or on information banners on the side of the video image or in designated areas of the images. The device is attached to the wearer via an adjustable strap system around the head illustrated in Figure 8 as the Side Band [22] which attached to the two Side Plates [12] of the Protection Frame [17] and extending behind the head of the wearer, when the device is worn; and the Top Band [23] attached on one end to the top of the Lens Frame [18] and on the other end joined to the Side Band [22] via the Band Joint [24]. The Band Joint [24], is a joining of the Side Band [22] and a Top Band [23] in a T Junction. It is constructed either by wrapping an extended length of the Top Band [23] around the Side Band [22] and sewing it down on itself, or by other methods of fastening or joining it to itself. Or by utilising a clip that helps to form this T joint between the two bands. Alternative strap systems that suspend or attach? the device on the wearer during use may be suspended on the ears, neck or shoulders of the wearer.

The sides and edges of the Protective Eyewear Device [10] are fitted with an Edge Cushion [21] strip or layer as illustrated in Figure 9. The Edge Cushion [21] is typically made of a soft material like rubber, foam, padded cloth fabric or soft and deformable plastic. This helps to protect the wearer from scuffs and chaffing during use of the device and provides a more comfortable fit and experience to the user. The Edge Cushion [21] material may also bee hypo-allergic and allow breathing of the skin and the volume enclosed by the Protective Eyewear Device [10] and the user's head.

The Protective Eyewear Device [10] typically but not exclusively consists of the following main components.

1. Front Protective Plate. Manufactured from metal, ideally reflective, like aluminium or silver coated.

2. Top Cover Plate. Protects the gap between the lens frame and the Protection Frame. Manufactured from metal, same as Front Protective Plate [1].

3. Digital Camera. The digital camera device is part of the tablet or mobile phone device that is used as visualisation aid in the protective eyewear 4. Second Camera for stereo view. This is an optional second camera that can be used to provide a visual image to the right screen sector [20]. This is used to provide the wearer a stereoscopic view.

5. Top Curved Edge. This curved edge allows good and comfortable fit on the wearer's forehead 6. Focus Lenses. These lenses image the screen picture from the left [19] and right [20] Screen sector on the wearers eye pupils in order to reconstruct an appropriate optical field equivalent to the scene in front of the protective device.

7. Sizing Slots. Two slots per Lens Holder [14] used as guides in adjusting the position of the lenses in relevance to the user's eye-to-eye and eye-to-nose distance. They also serve as mounting points for the Lens Holders.

8. Retaining Rings. Two per Lens Holder [14]. These retaining rings permit adjustment of the Focus Lenses [6] on the left and right screens. Thus providing adjustment to the user's eyes and vision.

9. Nose Rest. This cut-out on the Lens Frame [18] allows for the eyewear to be located in relevance to the wearer's nose, defining the approximate centre of the eye-to-eye distance of the user.

10. Protective Eyewear Device. The whole device with all its components as described in this patent, assembled to provide protected vision to the user/wearer, against hazardous laser or other radiation.

11. Lower Curved Edge. This curved edge allows good and comfortable fit to the wearer's face, cheeks and nose. The plate carrying the curve also protects against radiation penetrating below the eyes.

12. Side Plates. These plates protect the user's eyes from radiation that may impinge on the sides of the face.

13. Camera Opening. This opening on the Front Protective Plate [1], allows light to arrive at the camera of the device. Hence the camera can monitor the environment in front of the user. The opening can carry a protective filter that absorbs the wavelength of laser radiation used, or other filters appropriate to the planned use and method of monitoring the environment and work. For example, UV protection, non-linear absorber, etc. 14. Lens Holders. These holders suspend the Focus Lenses [6] in front of the user's eyes, over the Lens Holder Opening [15] and in front of the Left and Right Screen Sectors [19, 20].

15. Lens Holder Openings. These openings allow the user to see the left and right images produced by the tablet or screen(s) via the Focus Lenses [6].

16. Tablet. The tablet is placed inside the Protective Eyewear Device [10] 17. Protection Frame. It encompasses the Tablet [16] or camera and screen set and the Lens Frame [18].

18. Lens Frame. This frame inserts into the Protection Frame [17]. It is also typically made of metal, but can be made of other materials too. It positions against the wearer's face and nose using the Top Curved Edge [5] and Nose Rest [9]. This frame carries the Lens Holders [14] and Focus Lenses [6] used to generate viewable images of the Left and Right Screen Sectors [19, 20] for the user.

19. Left Screen Sector. A sector of the screen belonging to the Tablet [16] or independent, that takes it's monitored picture signal from the Digital Camera [3] or cameras and projects it to the user. This sector projects the picture intended to be viewed with the left eye of the user.

20. Right Screen Sector. A sector of the screen belonging to the Tablet [16] or independent, that takes it's monitored picture signal from the Digital Camera [3] or cameras and projects it to the user. This sector projects the picture intended to be viewed with the Right eye of the user.

21. Edge Cushion. A foam or rubber based soft material used to clad the edges of the Protective Eyewear Device [10] in order to protect the wearer from chaffing and injuries. The Edge Cushion is removable by the user. It may be reinforced with wire or foil, making it stiffer and thus easier to remove and reapply.

22. Side Band. An elastic band attached from end to end to each of the two Side Plates [12] of the Protection Frame [17] and extending behind the head of the wearer, when the device is worn. This band is used to provide firm suspension of the Protective Eyewear Device [10] against the user's face.

23. Top Band. An elastic band attached on one end to the top of the Lens Frame [18] and on the other end joined to the Side Band [22] via the Band Joint [24]. This band is used to provide firm suspension of the Protective Eyewear Device [10] on the user's head.

24. Band Joint. This is a joining of the Side Band [22] and a Top Band [23] in a T Junction. It is constructed either by wrapping an extended length of the Top Band [23] around the Side Band [22] and sewing it down on itself, or by other way fastening or joining it to itself. Or by utilising a clip that helps to form this T joint between the two bands.

Further than the Digital Camera sensors [3], the Protective Eyewear Device [10] may carry other sensors on it such as temperature, radiation, gas, sound, distance, GPS position, proximity and gyroscopes. In alternative implementations, the device may connect to the laser processing tool or the laser source via wireless or wired connectivity, such as wifi, bluetooth, usb, RS232 serial communication, Ethernet or other standardised electronics communications protocol, in order to transmit and receive commands and information with such devices. The device may be able to connect to the internet via wire or wireless and transmit status or progress information and reports, monitoring information, receive instructions, designs, models and positional or structural information of the work piece or the environment, receive live settings, receive live data analysis by other computers and servers processing live data that is transmitted by the device. The device may also be able to operate other software simultaneously like playing music or white noise sounds for the user, receiving and transmitting phone calls, text messages and other social media messaging. The device may be able to record and transmit or broadcast live video of the work being visualised with or without the supplementary information being displayed to the user.

In an alternative implementation, the Protective Eyewear Device [10] has digital or analogue connectivity options, via ports and components of the Tablet [16] or other supplementary logic processing systems, wirelessly or via wire, to laser monitoring devices such as power meters, photodiodes, auto-correlators, beam profilers, and other beam characterisation equipment, thus offering hands free and remote readout of such beam characterisation equipment. Such beam characterisation equipment may be incorporated in the laser or tool, or be stationed outside or independent to the laser source and tool systems.

Claims

Claims: We claim: 1. A Protective Eyewear Device against laser radiation including a protective frame that fully covers the wearer's eyes and the area around the wearer's eyes, stopping any electromagnetic radiation with wavelength ranging from 20 nm to 0.1 mm, travelling in the surroundings of the wearer, from reaching the eyes of the wearer, said frame made of metal that does not transmit any detectable radiation at the said wavelength range and is capable of withstanding direct laser beam irradiation for a minimum duration of 3 seconds and a typical duration of 5 seconds, the said laser beam being of a laser wavelength within the said wavelength range and having a minimum spot size diameter of 2 mm and a maximum average power of 10kW.
2. The Protective Eyewear Device recited in claim 1, wherein vision is provided to the wearer and user of the device via a Digital Camera which is collecting light and monitoring video image through an opening referred to as the Camera Opening, situated on the said frame and more specifically on the front of the of the frame, referred to as the Front Protective Panel, said Digital Camera is transmitting image signal to a screen situated inside the said frame, the said screen being separated into 2 sectors referred to as the Left Screen Sector and the Right Screen Sector, said screen sectors displaying the said video image that is monitored by the Digital Camera towards the left and right eye of the wearer respectively.
3. The Protective Eyewear Device recited in claim 2, wherein the image displayed on the Left Screen Sector and the Right Screen Sector is focussed onto the user's eyes by two Focus Lenses, situated in front of the user's left and right eye respectively, said Focus Lenses having a positive focal length between 5 mm and 200 mm and suspended inside the said frame of claim 1 by two Lens Holders, each of the said Lens Holders attached and corresponding to one or the other Focus Lens.
4. The Protective Eyewear Device recited in claim 3, wherein the said frame of claim 1 essentially comprises 2 frames, one frame being the Protection Frame which forms the exterior surfaces of the said frame and provides protection from laser radiation as described in claim 1 directed at the front, the side and underneath the Protective Eyewear Device, as well as the top for a limited area or fully; and the other frame being the Lens Frame which locates between the Protection Frame and the wearer's face, is situated over the wearer's eyes and rests on the wearer's nose, and inserts fully or partially inside the Protection Frame, and provides openings and locating points for the Lens Holders.
5. The Protective Eyewear Device recited in claim 4, wherein the said Protection Frame and Lens Frame are constructed of metallic plates which are welded, soldered, brazed or mechanically fastened together, or constructed of cast metal, or constructed of machined metal, or constructed of 3D printed metal by a method such as wire deposition, powder spray deposition or selected layer melting additive manufacturing.
6. The Protective Eyewear Device recited in claim 5, wherein the said metallic Protection Frame and Lens Frame are made of a reflective metal which may be any or a combination of the metals aluminium, silver, magnesium, zinc, copper, gold, platinum, palladium, rhodium, iridium or chrome steel, preferably but not exclusively polished.
7. The Protective Eyewear Device recited in claim 5, wherein the said metallic Protection Frame and Lens Frame are made of a ferrous or nickel steel and coated with a reflective metal which may be any or a combination of the metals silver, aluminium, chromium, magnesium, zinc, copper, gold, platinum, palladium, rhodium or iridium, preferably but not exclusively polished.
8. The Protective Eyewear Device recited in claim 5, wherein the said metallic Protection Frame and Lens Frame are made of a titanium based steel and coated with a reflective metal which may be any or a combination of the metals silver, aluminium, chromium, magnesium, zinc, copper, gold, platinum, palladium, rhodium or iridium, preferably but not exclusively polished.
9. The Protective Eyewear Device recited in claim 5, wherein the said metallic Protection Frame and Lens Frame are made of copper or a brass alloy and coated with a reflective metal which may be any or a combination of the metals silver, aluminium, chromium, magnesium, zinc, copper, gold, platinum, palladium, rhodium or iridium, preferably but not exclusively polished.
10. The Protective Eyewear Device recited in claim 5, wherein the said metallic Protection Frame and Lens Frame are made of a refractory metals which may be any or a combination of the metals tungsten, zirconium, tantalum, rhenium, molybdenum, niobium, hafnium, chromium, platinum, palladium, ruthenium, rhodium, iridium and coated with a reflective metal which may be any or a combination of the metals silver, aluminium, chromium, magnesium, zinc, tin, copper, gold, platinum, palladium, rhodium or iridium, preferably but not exclusively polished.
11. The Protective Eyewear Device recited in claim 5, wherein the said metallic Protection Frame and Lens Frame are made of silicon carbide or alumina or tungsten carbide or graphite or silica or zirconia or a combination of these and coated with a reflective metal which may be any or a combination of the metals silver, aluminium, chromium, magnesium, zinc, tin, copper, gold, platinum, palladium, rhodium or iridium, preferably but not exclusively polished.
12. The protective Eyewear Device recited in claim 5, comprising an electronic Tablet computer device including the said Digital Camera and Left Screen Sector and Right Screen Sector and a software that monitors video image via the Digital Camera and displays it in the Left Screen Sector and Right Screen Sector.
13. The protective Eyewear Device recited in claim 5, comprising a tablet shaped smartphone device including the said Digital Camera and Left Screen Sector and Right Screen Sector and a software that monitors video image via the Digital Camera and displays it in the Left Screen Sector and Right Screen Sector.
14. The Protective Eyewear Device recited in claim 5 and its variations recited in claims 6 to 11, wherein the metallic Protection Frame extends to cover the whole face of the wearer, or extends to cover the whole face of the wearer including the ears, or extend to cover the whole head of the wearer.
15. The Protective Eyewear Device recited in claim 5 and its variations recited in claims 6 to 11, including an elastic band referred to as the Side Band which extends from one Side Panel to the Other Side Panel of the Protection Frame and can stretch around the back of the wearer's head.
16. The protective Eyewear Device recited in claim 5, including an elastic band referred to as the Top Band that attaches at the top of the Lens Frame and on the Side Band behind the head of the wearer, via a Band Joint.
17. The Protective Eyewear Device recited in claims 15 and 16, wherein the Side Band and Top Band are constructed of elastic polymer or fabric and can be adjusted to match the size of the wearer's head.
18. The Protective Eyewear Device recited in claims 12 or 13, wherein the said Tablet or smartphone or other device electronics can connect to a digital network, a local area network or the internet, via wireless connection methods including but not restricted to wifi IEEE 802.11, Bluetooth, NFC, IEEE 802.16, cellular, LTE, GSM, 3GPP, 4G wireless communication, or via wired connection such as Ethernet, RS232, digital databus, HDMI, DVI, VGA or other serial or parallel data connection and transmit video images monitored by the Digital Camera on the Protective Eyewear Device and transmit other data and information, or receive video images and information.
19. The Protective Eyewear Device recited in claim 18, including a plurality of sensors measuring or monitoring temperature, radiation, laser beam power, gas, sound, distance, GPS signal, proximity to predefined targets, magnetic field, gravity, change in linear or rotational momentum and orientation against any of the measured quantities.
20. The Protective Eyewear Device recited in claim 18, wherein the said Tablet, or smartphone or other device electronics can process data and display on any or either of the Left Screen Sector and the Right Screen Sector, in a simple format or in an augmented reality video image, the information that arises from processing the said data or the said data unprocessed or processed.
21. The Protective Eyewear Device recited in claims 19 and 20, wherein the said plurality of sensors produce the said data that is being processed by the Tablet or smartphone or other device electronics.
22. The Protective Eyewear Device recited in claim 20, wherein the said Tablet, or smartphone or other device electronics can display on any or either of the Left Screen Sector and the Right Screen Sector, in a simple format or in an augmented reality video image, information that is received from via the internet, or local area network or other network connection and originates on the laser source system or the laser processing tool or the laser processing system, or the facility which in which the laser system is operated, or the facility in which the user of the Protective Eyewear Device is situated.
23. The Protective Eyewear Device recited in claim 22, wherein the said Tablet, or smartphone or other device electronics are connected to and is monitoring, or can intercept the laser system interlocks or safety sensors, or unexclusively the laser processing tool interlocks and safety sensors, or unexclusively the facility interlocks and safety sensors.
24. The Protective Eyewear Device recited in claim 23, wherein the said Tablet, or smartphone or other device electronics can display on any or either of the Left Screen Sector and the Right Screen Sector, in a simple format or in an augmented reality video image, data and information related to the interlocks and safety sensors.
25. The Protective Eyewear Device recited in claim 23, including sensors that sense proximity to the user's face, laser radiation levels or unexclusively laser beam position, material temperature and can break the interlocks if pre-set safety limits are transcended or conditions are sensed that may compromise safety.
26. The Protective Eyewear Device recited in claim 20, wherein the said Tablet, or smartphone or other device electronics can display on any or either of the Left Screen Sector and the Right Screen Sector, in a simple format or in an augmented reality video image, information and video images including designs, drawings, shapes, safety warnings, measurements, setting and statii of the laser processing tool, the laser system, the Protective Eyewear Device itself, the Tablet or smartphone, properties and measurements of the target material or surroundings, like temperature, humidity, reflectivity, chemical consistence, spectra, structure, surface profile, depth of coatings or bulk volume, laser beam path, laser beam intensity and laser beam temporal properties.
27. The Protective Eyewear Device recited in claim 20, wherein the said Tablet, or smartphone or other device electronics can display on any or either of the Left Screen Sector and the Right Screen Sector, in a simple format or in an augmented reality video image, the video image or information that is monitored or displayed by a second Protective Eyewear Device.
28. The Protective Eyewear Device recited in claim 20, wherein the said Tablet, or smartphone or other device electronics can display on any or either of the Left Screen Sector and the Right Screen Sector, in a simple format or in an augmented reality video image, the video image or information that is monitored by the facility or laser processing tool cameras and sensors.
29. The Protective Eyewear Device recited in claim 5, wherein the Digital Camera is two Digital Cameras situated at symmetric positions to the wearer's nose, the said two cameras collecting light through two corresponding Camera Openings.
30. The Protective Eyewear Device recited in claim 5, wherein the Digital Camera is a plurality of Digital Cameras.
31. The Protective Eyewear Device recited in claim 5 and its variations recited in claims 6 to 11 and 29 to 30, including Digital Cameras reinforced with a reflective or refractory metal backing behind the image sensor in order to provide extra safety, or unexclusively reinforced with lenses coated with dielectric coating highly reflective of the selected laser wavelength or wavelengths.
32. The Protective Eyewear Device recited in claim 5 and its variations recited in claims 6 to 11, coated with a dielectric coating highly reflective of the selected laser wavelength or wavelengths.
33. The Protective Eyewear Device recited in claim 5 and its variations recited in claims 6 to 11 and 29, including a further metallic protection plate situated behind the Digital Camera or Digital Cameras and in front of the Left Screen Sector and Right Screen Sector.
34. The Protective Eyewear Device recited in claim 33, wherein the said further metallic protection plate is manufactured of any or a combination of the following materials, aluminium, silver, magnesium, zinc, copper, gold, platinum, palladium, rhodium, iridium, chrome steel, iron based steel, nickel based steel, tungsten, zirconium, tantalum, rhenium, molybdenum, niobium, hafnium, copper, brass, graphite, alumina, zirconia, silica, silicon carbide tungsten carbide.
35. The Protective Eyewear Device recited in claim 5, comprising two Protective Eyewear Devices, each protecting either the left or the right eye only of the wearer and each comprising a Digital Camera and a Focus Lens and either the Left Screen Sector or the Right Screen Sector respectively.
36. The Protective Eyewear Device recited in claims 26 and 29, wherein the video image is being displayed as 2 dimensional or split 2 dimensional or 3 dimensional.
37. The Protective Eyewear Device recited in claim 5, comprising said Focus Lenses and Lens Holders which are individually translationally adjustable in the horizontal, vertical and sagittal axes, in reference to the viewing plane of the user.