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WO2020123006A2 - Masque multi-usage avec affichage facultatif et mise sous pression et équilibrage intégrés - Google Patents

Masque multi-usage avec affichage facultatif et mise sous pression et équilibrage intégrés Download PDF

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Publication number
WO2020123006A2
WO2020123006A2 PCT/US2019/051501 US2019051501W WO2020123006A2 WO 2020123006 A2 WO2020123006 A2 WO 2020123006A2 US 2019051501 W US2019051501 W US 2019051501W WO 2020123006 A2 WO2020123006 A2 WO 2020123006A2
Authority
WO
WIPO (PCT)
Prior art keywords
facemask
user
lens
facemask according
nose
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Ceased
Application number
PCT/US2019/051501
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English (en)
Other versions
WO2020123006A3 (fr
Inventor
William Parker
Stephen Guerrera
Patrick Brophy
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Marsupial Holdings Inc
Original Assignee
Marsupial Holdings Inc
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by Marsupial Holdings Inc filed Critical Marsupial Holdings Inc
Publication of WO2020123006A2 publication Critical patent/WO2020123006A2/fr
Publication of WO2020123006A3 publication Critical patent/WO2020123006A3/fr
Anticipated expiration legal-status Critical
Ceased legal-status Critical Current

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Classifications

    • G—PHYSICS
    • G02—OPTICS
    • G02B—OPTICAL ELEMENTS, SYSTEMS OR APPARATUS
    • G02B27/00—Optical systems or apparatus not provided for by any of the groups G02B1/00 - G02B26/00, G02B30/00
    • G02B27/0081—Optical systems or apparatus not provided for by any of the groups G02B1/00 - G02B26/00, G02B30/00 with means for altering, e.g. enlarging, the entrance or exit pupil
    • G—PHYSICS
    • G02—OPTICS
    • G02B—OPTICAL ELEMENTS, SYSTEMS OR APPARATUS
    • G02B27/00—Optical systems or apparatus not provided for by any of the groups G02B1/00 - G02B26/00, G02B30/00
    • G02B27/01—Head-up displays
    • G02B27/017—Head mounted
    • G02B27/0172—Head mounted characterised by optical features
    • G—PHYSICS
    • G02—OPTICS
    • G02B—OPTICAL ELEMENTS, SYSTEMS OR APPARATUS
    • G02B27/00—Optical systems or apparatus not provided for by any of the groups G02B1/00 - G02B26/00, G02B30/00
    • G02B27/42—Diffraction optics, i.e. systems including a diffractive element being designed for providing a diffractive effect
    • G02B27/4205—Diffraction optics, i.e. systems including a diffractive element being designed for providing a diffractive effect having a diffractive optical element [DOE] contributing to image formation, e.g. whereby modulation transfer function MTF or optical aberrations are relevant
    • G—PHYSICS
    • G02—OPTICS
    • G02B—OPTICAL ELEMENTS, SYSTEMS OR APPARATUS
    • G02B27/00—Optical systems or apparatus not provided for by any of the groups G02B1/00 - G02B26/00, G02B30/00
    • G02B27/01—Head-up displays
    • G02B27/0101—Head-up displays characterised by optical features
    • G02B2027/0118—Head-up displays characterised by optical features comprising devices for improving the contrast of the display / brillance control visibility
    • G—PHYSICS
    • G02—OPTICS
    • G02B—OPTICAL ELEMENTS, SYSTEMS OR APPARATUS
    • G02B27/00—Optical systems or apparatus not provided for by any of the groups G02B1/00 - G02B26/00, G02B30/00
    • G02B27/01—Head-up displays
    • G02B27/017—Head mounted
    • G02B27/0172—Head mounted characterised by optical features
    • G02B2027/0174—Head mounted characterised by optical features holographic

Definitions

  • the present invention generally relates to protective facewear (masks, goggles, etc.) used during certain activities (e.g., skydiving, scuba diving, military operations, etc.).
  • the present invention is directed to Multi-Use Mask with Optional Display and Integrated Pressurization and Equalization.
  • Sport diving masks and goggles are used by swimmers, snorkelers, and scuba divers (professional, military, and sport divers) to protect their eyes and enhance visibility under water.
  • Traditional diving and swimming eyewear include a mask with a lens, with the mask being securable to the user’s face, and may also have a snorkel tube for diving or swimming close to the surface of the water.
  • traditional scuba diving masks and swim goggles keep water out of the vision of divers and swimmers when under water, visibility conditions under water and at the surface of the water are often less than optimal, especially at night. Additionally, water generally reflects and/or refracts light at the surface and may also be dirty or murky, further obscuring the diver’s or swimmer’s view of others or their surroundings. Additionally, even when divers use a dive light, the visibility of the diver or swimmer to others at night or at depth is greatly reduced.
  • Scuba diving is generally a dangerous activity and when combined with poor visibility conditions, swimming or snorkeling can be relatively dangerous, making equipment that enhances the visibility of the diver or swimmer and communication between divers or swimmers advantageous.
  • the facewear to be multi-use, e.g., being able to use the same mask for skydiving and scuba diving or, for military applications, during combat, without significant modifications to the facewear.
  • the user of the facewear would be able to transition from a first use, e.g., skydiving, to a second use, e.g., scuba diving,
  • a facemask for a user comprising: a body; a light engine coupled to the body; a lens coupled to the body, the lens having an internal surface and an external surface; and a projection system including image waveguide optically coupled to a grating capable of displaying viewable information for the user, wherein the image waveguide is optically coupled to the light engine.
  • a facemask capable of presenting information to a user
  • the facemask comprising: a body; a lens coupled to the body, the lens having an internal surface and an external surface, wherein the lens and body, when worn by the user, form a cavity in between the a face of the user, the lens, and the body; and a holographic display system including: a light engine; an image waveguide; and one or more diffraction gratings, wherein the light engine receives the information and transmits the information optically through the image waveguide such that the information appears to the user proximate the lens.
  • a multi-use facemask for shielding eyes of a user comprising: a body; a lens coupled to the body, wherein the combination of the lens, the body, and a portion of a face of the user create a cavity; and a nose closing mechanism coupled to the body, the nose closing mechanism being movable from a first position that exposes air passages in a nose of the user and a second position that blocks the air passages.
  • a multi-use facemask for a user comprising: a body; a lens coupled to the body, wherein the combination of the lens, the body, and a portion of the user’s face create a cavity; and a self-adjusting pressure system that automatically adjusts a pressure inside the cavity, wherein the self-adjusting pressure system includes a pressure vessel and a pressure regulator, wherein the pressure regulator has a portion exposed to the ambient pressure. Additionally or alternatively, wherein the portion is a diaphragm.
  • FIG. l is a perspective view of a facemask according to an embodiment of the present invention.
  • FIG. 2 is an exploded view of the facemask of FIG. 1;
  • FIG. 3 is an illustration of a holographic display system according to an embodiment of the present invention.
  • FIG. 4 is a block diagram of another holographic display system according to an embodiment of the present invention.
  • FIG. 5 A is an illustration of a facemask showing view through information according to an embodiment of the present invention.
  • FIG. 5B is an illustration of a facemask showing view through information according to an embodiment of the present invention.
  • FIG. 6 is a plan view of a user wearing a facemask and the representative field of view of a user when using a facemask according to an embodiment of the present invention
  • FIG. 7A is an illustration of a facemask according to another embodiment of the present invention.
  • FIG. 7B is another view of the facemask of FIG. 7A;
  • FIG. 8 is an illustration of a facemask according to another embodiment of the present invention.
  • FIG. 9 is an illustration of a facemask according to yet another embodiment of the present invention.
  • FIG. 10 is a schematic of a facemask with a self-adjusting pressure system according to an embodiment of the present invention.
  • FIGS. 11 A and 1 IB are illustrations of a facemask including nose clips according to additional embodiments of the present invention.
  • FIGS. 12A and 12B are illustrations of a facemask including a ratchet mechanism according to an embodiment of the present invention.
  • FIG. 12C is a partial cutaway view of a ratchet mechanism suitable for use with a facemask according to embodiments disclosed herein;
  • FIG. 12D is a plan view of a portion of a ratchet mechanism suitable for use with a facemask according to embodiments disclosed herein;
  • FIGS. 13A and 13B are illustrations of a facemask having a fold away nose-cup according to an embodiment of the present invention.
  • FIG. 14 is a section view of the material making up the nose cup of FIGS. 13A and 13B.
  • the facemask includes a holographic image display system (also referred to as holographic display system) (hereinafter HID) and particularly, holographic image guides, to relay information into the user’s view from a display or light engine, e.g., a projector, while disturbing as little of the overall field of view (FOV) as possible with display hardware.
  • HID holographic image display system
  • FOV overall field of view
  • the holographic image guides can provide daylight and night readable images with FOV of about 25 degrees vertical x 40 degrees horizontal, 60fps (frame per second) framerate, contrast of more than 1000: 1, 720p resolution, and full color. Integrating an HID into the lenses of the facemask has many advantages, including, but not limited to, reducing the overall weight of the
  • Ai facemask when compared to devices with a separate display screen), and allowing for a low profile, preferably less than 25 mm eye relief, which is therefore compatible with most night observation devices (NOD or NODs) as well as other optical instruments such as camera view finders, binoculars, and telescopes.
  • NOD night observation devices
  • other optical instruments such as camera view finders, binoculars, and telescopes.
  • the facemask includes a nose clip so as to prevent water from going up the nose and to prevent loss of the nose clip during use and storage.
  • the equalization feature can also assist with decreasing fog or moisture build up inside the facemask.
  • FIG. 1 illustrates a generalized embodiment of a protective facemask 100 that provides information to the user without interfering with the user’s FOV.
  • Protective facemask 100 can be used, for example, by sky divers, scuba divers, swimmers, astronauts, pilots, or skiers, or for people working in various conditions that necessitate the use of protective eyewear and where having information readily presented to them would be advantageous.
  • people who clean or work in hazardous environments may find a facemask as described herein advantageous to protecting their health and safety by being able to provide them with real-time information on the integrated display.
  • Other applications for the protective facemask can also include motorcycle or racecar driving or other applications where protective measures are needed.
  • facemask is used to describe embodiments herein, it is used merely for convenience as the novel concepts disclosed can be integrated within
  • protective facemask 100 includes a body 104, a lens 108 integrated into the body 104, and a holographic display system 106.
  • the body 104 is
  • body 104 is constructed so as to prevent water or air from
  • protective facemask 100 can be a diving mask or a swimming goggle, any protective eyewear useable in the water such as, but not limited to, a diving face piece, a self-contained breathing apparatus facemask, a re-breather mask, a supplied air face piece, a snorkeling mask, and the like as is known in the art, can benefit from one or more of the concepts disclosed herein.
  • body 104 includes an inner surface 112 (best seen in FIG. 2) and an outer surface 116 (discussed in more detail with reference to FIG. 2), the inner and outer surface working cooperatively to hold lens 108.
  • Body 104 includes a face engagement portion 120, that is sized and configured to create the seal between the facemask and the user’s face as discussed above.
  • Protective facemask 100 can also include a securing strap (not shown) for securing the body 104 around the user’s face.
  • the securing strap may comprise an adjustment buckle for adjusting a length of securing strap to ensure a snug fit around the user’s face, and a strap keeper 122 (shown in FIG. 2) for keeping excess strapping material secure to protective facemask 100.
  • Holographic display system 106 projects an image proximate lens 108 that is viewable by the user in addition to the outside scene. In other words, as the user views what is in front of her eyes, she is also provided see-through information that is viewable simultaneously.
  • holographic display system 106 includes a light engine 124 and at least one diffraction grating 128. Light engine 124 and diffraction grating 128 cooperate to project a see- through image for viewing by the user on lens 108. Additional details of holographic display system 106 are discussed below.
  • FIG. 2 shows an exploded view of protective facemask 100.
  • facemask 100 can be of multi -component construction, with face engagement portion 120, an inner structure 132, lens 108, and outer structure 136 (with the inner structure and outer structure forming inner surface 112 and outer surface 116, respectively).
  • Face engagement portion 120 is, as discussed above, sized and configured to create a seal between facemask 100 and the user’s face.
  • face engagement portion 120 can have a first portion 140 with curvilinear profile that approximately matches the curvature of a person’s forehead, around the user’s eye sockets, cheeks, and around the user’s nose.
  • first portion 140 is constructed of a pliable material so as to induce conformity with the user’s facial features, thereby creating a relatively tight seal between facemask 100 and the user’s face, and to increase comfort.
  • Face engagement portion 120 can also include a second portion 144 that is coupled to first portion 140 via a member 148.
  • Member 148 is sized and configured to provide some distance between the user’s face and lens 108 and to generally render the lens parallel to the user’s face such that the user’s eyes have a relatively unobstructed view out of lens 108.
  • member 148 can have a relatively large, upper outside portions 152 (best seen in FIG. 1), outside portions 152A and 152B, which can decrease in width around apertures 156 (aperture 156A and 156B) in second portion 144.
  • Member 148 may be thinnest around the nose area, where the user’s face protrudes furthest from the user’s check bones.
  • Each aperture 156 is at least partially defined by an inner rib 160 and an outer rib 164 which can cooperatively mate with similar features of inner structure 132 and provide a seal to prevent egress or ingress into the cavity formed by facemask 100 when on the user’s face.
  • Second portion 144 may be constructed of a material similar to first portion 140, e.g., a supple material, or can be made from a more rigid material so as to provide support for inner structure 132.
  • Inner structure 132 couples to face engagement portion 120 and supports some or all of light engine 124 and lens 108.
  • inner structure 132 has cooperatively mating ribs 168 (168A and 168B) to engage inner rib 160 and outer rib 164.
  • Inner structure 132 can also include a bracket 172, which includes two supports 174 (supports 174A and 174B), that receives and secures light engine 124 to the inner structure.
  • Inner structure 132 can include a lens inset area 176 that supports lens 108, prohibits the lens from moving closer to the user’s face via
  • Ai a lens ridge 180 and includes a plurality of ridges 184 that cooperatively mate with corresponding slots 188 on outer structure 136 to secure the inner structure to the outer structure.
  • inner structure 132 is made from a generally rigid material so as to provide adequate support for lens 108 and light engine 124.
  • inner structure 132 and outer structure 136 serve to secure lens 108.
  • Lens 108 is generally capable of withstanding pressure and impacts and allows for external viewing by the user. As shown in FIG. 2, lens 108 may comprise separate lens portions; however, a single lens can also be used.
  • lens 108 includes a waveguide portion 192 (which is considered a part of holographic display system 106 in FIG 1.) that transmits images from light engine 124 to diffraction grating 128 (shown in FIG. 1).
  • diffraction grating 128 is incorporated into lens 108 rather than on the surface (either front or back surface) of the lens.
  • diffraction grating 128 may be coupled to a surface of lens 108 (either the inner or outer surface).
  • lens 108 has a curvilinear profile, such as one that would approximate the contours of a user’s face and thereby allow facemask 100 to have a lower profile design.
  • Lens 108 can be constructed of thermoplastic polymers, such as, but not limited to, polycarbonates and acrylics, or can be constructed from glass.
  • glass used to create lens 108 is suitable for the creating of diffraction gratings within the glass using a femtolaser.
  • Suitable parameters of a laser for producing refractive index changes in a wide variety of transparent material include those described in U.S. Pat. No. 6,573,026, (Aitken et ah), U.S. Pat. No. 6,884,960 (Bourne et ak), and U.S. Pat. No. 6,853,785 (Dunn et ak), which are all incorporated herein by reference in their entirety.
  • facemask 100 is shown to have several distinct components, it is understood that certain components may be constructed integrally.
  • the holographic display system includes light engine 204, an internal lens 208, an image waveguide 212, and one or more diffraction gratings 216, diffraction gratings 216A and 216B (which may also be referred to more generally as holographic optical elements or HOEs) that combine to
  • Ai produce a holographic image display of information 220 (also referred to as a holographic image) for viewing by the user.
  • Light engine 204 can produce a full color, sunlight readable, high resolution holographic image for transmission to a user.
  • the image produced by light engine 204 can be read against the brightest scenery (e.g., a sunlit cloud in the sky), while still dimming enough to be compatible with under water diving.
  • Light engine 204 typically includes a processor 304 (as discussed with reference to FIG. 4, below) and receives information from one or more inputs, such as sensors (as discussed with reference to FIG. 4, below) or via wireless transmissions.
  • the processor is preferably a high performance, low power processor, with accelerated image processing, capable of executing a set of instructions (described in more detail below) such that light engine 204 can produce holographic image display of information 312 from the inputs.
  • the processor can provide real-time image processing for inputted video, such as high dynamic range processing, sensor fusion, contrast enhancement, and low-light processing.
  • the processor can provide geo-referenced augmented reality information when connected to real-time information or with preloaded object location information.
  • Diffraction grating 216 is a translucent selective wavelength grating that is designed to steer displayable information into and out of image waveguide 212.
  • diffraction grating 216 is prepared using laser beam interference techniques. For example, two laser beams may be directed at a substrate so as to produce a pattern of straight lines with a sinusoidal cross section, with the pitch of the grating being approximately l / sin Q.
  • one or more output diffraction gratings 216 may be included within lens 208 so as to provide different areas where information 220 may be viewed.
  • image waveguide 212 would be designed and configured to allow for the transmission of information 220 from light engine 204 to the diffraction gratings 216. It should be noted that although
  • Ai diffraction grating 216B is shown on the“eye side” of image waveguide 212, the diffraction grating may be placed on the opposite side or in another suitable position.
  • Image waveguide 212 is a translucent plate that propagates wavelengths substantially internally.
  • Image waveguide 212 can be many different shapes including, but not limited to, rectangular, circular, curvilinear, and can make up only a portion of lens 108.
  • Optical waveguide components have been made within various glasses for commercial photonic devices. The devices are based on planar optical waveguides, in which light is confined to substrate-surface channels. Silica, SiON, fluoroaluminates, chalcogenides and doped glasses are possible glasses for making optical waveguide devices.
  • Si02 and Si02/Si are common materials used to manufacture planar light wave circuits (PLCs), due to their refractive- index match with silica-based optical fiber.
  • PLCs planar light wave circuits
  • Glass/silica waveguide PLCs typically consist of a planar arrangement of glass waveguides with a higher index of refraction buried in glass all on a silicon or glass substrate.
  • FIG. 4 there is shown another embodiment of a holographic display system for inclusion with facemask 100, holographic display system 300.
  • holographic display system 300 provides useful information to a user of facemask 100 that is overlaid upon what the user can view through the optics provided with facemask 100, the useful information being collected/received from a plurality of source devices 312.
  • additional information that may be useful to the user of facemask 100, including, but not limited to, environmental information, ballistics information, and situational information may be provided to the user through facemask 100 via holographic display system 300.
  • FIG. 1 In the embodiment shown in FIG.
  • holographic display system 300 includes a processor 304 which receives information from one or more ports 308 and one or more source devices 312 (sensors or similar information gathering devices). Processor 304 interacts with a video processor 316 which can receive inputs from video inputs 320. Video processor 316 provides information to projector 324, which transmits the images that appear on holographic image display 328.
  • Processor 304 can be a microprocessor suitable for processing large volumes of information without requiring a significant power source (preferably less than 0.5 watt).
  • Processor 304 can be designed and configured to allow for the transmission of information from
  • Ai one or more ports such as a RS-332 serial port, micro-USB port, USB-A, B, or C port, and the like, that may be coupled to the processor via coupling hardware known in the art. These ports can allow for information collection and alignment from ancillary equipment such as thermal cameras, optical zooms, night vision equipment, or communication devices that couple, via an internet protocol, to the Internet so as to provide additional information to the user of facemask 100.
  • Processor 304 can also receive information from one or more source devices 312, such as, but not limited to, GPS sensor 312A, temperature sensor 312B, pressure sensor 312C, humidity sensor 312D, and one or more inertial measurement units (IMU) 312E-F, and a rangefinder 312G.
  • source devices 312 such as, but not limited to, GPS sensor 312A, temperature sensor 312B, pressure sensor 312C, humidity sensor 312D, and one or more inertial measurement units (IMU) 312E-F, and a rangefinder 312G.
  • Combinations of information from one or more of source devices 312 may be used by processor 304 to provide valuable information to the user.
  • source devices 312B-D may be used to provide ballistics information, e.g., ammunition trajectory.
  • IMUs 312E and F can produce a compass heading as well as a 9-degree freedom of pose estimation (heading, inclination, and cant/roll).
  • processor 304 can determine the geolocation coordinates of a target in the reticle crosshairs of the facemask 100 using IMUs 312E-F.
  • Processor 304 can be also designed and configured to allow for the transmission of information wirelessly via any wireless standard or protocols, such as, but not limited to, RFID, Bluetooth, Wi-Fi, ZigBee, WiMax, WiGig, Ultra Wide Band, or a Wireless Wide Area Network (e.g., TDMA, CDMA, GSM, UMTS, EV-DO, LTE), etc.
  • any wireless standard or protocols such as, but not limited to, RFID, Bluetooth, Wi-Fi, ZigBee, WiMax, WiGig, Ultra Wide Band, or a Wireless Wide Area Network (e.g., TDMA, CDMA, GSM, UMTS, EV-DO, LTE), etc.
  • Video processor 316 can be configured to perform low power video processing.
  • video processor 316 is capable of processing information from up to six video inputs 320.
  • Video processor 316 also drives the projector 324 and the display of information onto holographic image display 328.
  • Video processor 316 can receive an external power supply from video input 320A and can receive external video feed(s) from video input 320B.
  • Projector 324 receives display information from video processor 316 and projects it to holographic image display 328.
  • the combination of projector 324 and holographic image display 328 can be similar to the setup of holographic display system 106 or holographic display system 200, with projector 324 sending display information through a lens, into a HOE, through an image guide, and to another HOE, before it is displayed to the user.
  • FIGS. 5 A and 5B there are shown portions of embodiments of a protective facemask 400 incorporating one or more aspects of the embodiment discussed in FIGS. 1 to 4.
  • Facemask 400 shows the inclusion of a portion of a holographic display system, particularly a diffraction grating, so as to display information 404 onto the mask lens 408.
  • the integration of the diffraction grating into mask lens 108 of facemask 400 allows for a myriad of information 404 to be displayed to the user. Since a holographic display system is capable of high resolution, and as shown in the FIGS., this information could be text, symbols, figures and/or video data streams, and can be in various colors and placements on lens 408 (as shown in FIG.
  • the holographic display system also enables enhanced vision with low light, thermal, hyperspectral, and other imaging systems.
  • the holographic display system provides the user additional information that is overlaid, in a substantially see-through fashion, upon the images that are viewable through a mask lens, such as lens 108 (FIG. 1).
  • a mask lens such as lens 108 (FIG. 1).
  • the diffraction grating is integrated within the lens (such as lens 408 in FIGS. 5A and 5B)
  • FOV 604 is about 115°.
  • FOV 604 is slightly less than 115°.
  • Another advantage of the low-profile design facilitated by the integration a diffraction grating into the mask lens is that it is readily usable with other devices, such as NODs, due to the relatively low eye relief obtainable.
  • FIGS. 7 to 14 these facemasks have been configured to allow for pressure equalization and clearing of the mask.
  • a traditional diving mask would include a nose cup or cap, so as to facilitate equalization of air pressure and to clear the mask. Nose caps are bulky and can interfere with other equipment. As shown in FIGS. 7A-7B, so as to still use the nose as a source of air to equalize pressure and to clear the mask, facemask 700 is provided with nose plugs 704 and a breather tube 708 (a variation of nose plugs and breather tube is shown in FIG. 8, but
  • FIG. 7B shows, in addition to nose plugs 704 and breather tube 708, a stowing clip 712 and a shutoff valve 716.
  • Stow clip 712 is useful to minimize the movement of the nose plugs 704 and breather tube 708 items while not in use.
  • Shutoff valve 716 allows nose plugs 704 and breather tube 708 to be removed and to block water from entering the facemask so it can still provide a seal against the user’s face.
  • pressure system 804 can automatically adjust the internal pressure of facemask 800.
  • pressure system 804 includes a pressure vessel 808 (FIG. 9), which is coupled to the top of facemask 800, and at least one pressure regulator 812.
  • pressure system 804 provides pressurized gas to facemask 800 (and specifically, cavity 816, which is formed between lens 820, frame 824, and the face of the user).
  • Pressure regulator 812 has access to the ambient pressure, so relative cracking pressure can be maintained.
  • a cracking adjustment device 828 facilitates small, personal, adjustments to the pressure in cavity 816.
  • FIG. 10 is a schematic representation of facemask 800 with a self-adjusting pressure system 804.
  • a compressed gas area 832 is fluidly coupled to pressure regulator 812 (typically 1 or 2 stage) which includes a diaphragm 836 that is open to the atmosphere through aperture 840.
  • a micro-adjust cracking button 828 is also in communication with pressure regulator 812.
  • Pressure regulator outputs compressed gas to cavity 816 via a tube 844 or other suitable mechanism for transmission of the fluid.
  • Facemask 800 does not use a nose cup or the nose plugs featured in FIGS. 7A, 7B, and 8.
  • a facemask such as facemask 900
  • Nose clip 904 can be tethered to the facemask to close the nose and prevent loss of the nose clip during and between uses.
  • nose clip 904 is integrated into facemask 900 so as to prevent it being
  • Nose clips 904A and 904B can be spring loaded so as to“pinch” onto the user’s nose when in use, but to allow for extraction of the user’s nose when desired.
  • Nose clips 904 A and 904B can also mount directly to the body 908 of facemask 900.
  • FIGS. 12A and 12B shows another facemask, facemask 1000, with a ratchet/friction- based nose clip 1004.
  • nose clip 1004 is mounted on the bottom edge 1008 of facemask 1000 on either side of nose opening 1012.
  • FIG. 12A shows the nose clip 1004 in the open position and
  • FIG. 12B shows it in the closed position.
  • FIGS. 12C and 12D show different views of nose clip 1004.
  • FIG. 12C shows a close- up view of the ratchet area 1016, as well as nose piece 1020, which, in an embodiment, pivots to accept different nose profiles.
  • FIG. 12D shows a further close-up view of ratchet area 1016, showing the engagement of teeth 1024 of the ratchet with pawl 1028.
  • Pawl 1028 includes a release lever 1032, thereby allowing the user to unblock her nose.
  • FIGS. 13A and 13B show a facemask 1100 with a nose cup 1104 that can be used for underwater exploration and then folded in a way to allow it to still be worn on the face, but have the nostrils open to the atmosphere.
  • FIG. 13 A shows the nose cup 1104 in the underwater position
  • FIG. 13B shows the nose cup in the above water position.
  • nose cup 1104 has design features that enable easy folding. For example, creating nose cup 1104 with thinned wall sections at the bending points. Examples of thinned walled sections are shown in FIG. 14, which shows section views of depressions 1108 (1108A, 1108B, and 1108C) in the material of the nose cup 1104, the area of the depressions producing the thin walls in the materials.
  • the section view with depressions 1108 A and 1108B are the depressions formed proximate the nose tip of the user and the section view while depression 1108C is proximate the opposing sides of the user’s nose.
  • the thinned sections act as predetermined fold lines to facilitate transformation from the underwater to above water states of use of nose cup 1104.
  • the holographic display in the facemask lens can be combined with a novel nose clip.
  • a facemask for a user comprising: a body; a light engine coupled to the body; a lens coupled to the body, the lens having an internal surface and an external surface; and a projection system including image waveguide optically coupled to a grating capable of displaying viewable information for the user, wherein the image waveguide is optically coupled to the light engine. Additionally or alternatively, wherein the image waveguide and the grating are coupled to either the internal surface or the external surface. Additionally or alternatively, wherein the image waveguide and the grating are in between the internal surface and the external surface. Additionally or alternatively, wherein the lens is curved. Additionally or alternatively, wherein the grating is curved. Additionally or alternatively, wherein the grating is curved. Additionally or alternatively, further including a second grating, the second grating displaying information different from the grating.
  • body and the lens form a cavity and wherein the body and the lens prevent liquid egress into the cavity. Additionally or alternatively, wherein the body and the lens result in a low-profile design. Additionally or alternatively, wherein the low-profile design allows for a field of view of the user of about 115 degrees. Additionally or alternatively, wherein the low-profile design provides an eye relief of less than 25 mm.
  • a facemask capable of presenting information to a user
  • the facemask comprising: a body; a lens coupled to the body, the lens having an internal surface and an external surface, wherein the lens and body, when worn by the user, form a cavity in between the a face of the user, the lens, and the body; and a holographic display system including: a light engine; an image waveguide; and one or more diffraction gratings, wherein the light engine receives the information and transmits the information optically through the image waveguide such that the information appears to the user proximate the lens.
  • the image waveguide and the one or more diffraction gratings are coupled to either the internal surface or the external surface. Additionally or alternatively, wherein the image waveguide and the one or more diffraction gratings are in
  • the lens is curved. Additionally or alternatively, wherein the one or more diffraction gratings is curved. Additionally or alternatively, wherein the one or more diffraction gratings is curved. Additionally or alternatively, wherein the combination of the body and the lens result in a low- profile design. Additionally or alternatively, wherein the low-profile design allows for a field of view of the user of about 115 degrees. Additionally or alternatively, wherein the low-profile design provides an eye relief of less than 25 mm. Additionally or alternatively, further including a breather tube coupled to the body, wherein the breather tube facilitates pressure equalization within the facemask.
  • a shut-off valve disposed between the breather tube and the body, the shut-off valve allowing for removal of the breather tube while preventing ingress of water to the cavity.
  • a self-adjusting pressure system that automatically adjusts a pressure inside the cavity.
  • the self-adjusting pressure system includes a pressure vessel and a pressure regulator, wherein the pressure regulator has a portion exposed to the ambient pressure. Additionally or alternatively, wherein the portion is a diaphragm.
  • the facemask includes a nose clip. Additionally or alternatively, wherein the nose clip pivots to accept different user nose profiles.
  • the nose clip has a left portion and a right portion, and wherein left portion and the right portion each include a pawl member and a plurality of engagement teeth, wherein the pawl member and ones of the plurality of engagement teeth cooperate to maintain a position of the left portion and the right portion.
  • further including a fold-away nose- cup wherein the fold-away nose-cup can be moved to a first position, whereby a user’s air passages are substantially unblocked, and moved to a second position, whereby the user’s air passages are blocked from liquid ingress.
  • a multi-use facemask for shielding eyes of a user comprising: a body; a lens coupled to the body, wherein the combination of the lens, the body, and a portion of a face of the user create a cavity; and a nose closing mechanism coupled to the body, the nose closing mechanism being movable from a first position that exposes air passages in a nose of the user and a second position that blocks the air passages.
  • a breather tube coupled to the body, wherein the
  • a breather tube facilitates pressure equalization within the facemask. Additionally or alternatively, further including a shut-off valve disposed between the breather tube and the body, the shut-off valve allowing for removal of the breather tube while preventing ingress of water to the cavity. Additionally or alternatively, further including a self-adjusting pressure system that
  • the self- adjusting pressure system includes a pressure vessel and a pressure regulator, wherein the pressure regulator has a portion exposed to the ambient pressure. Additionally or alternatively, wherein the portion is a diaphragm. Additionally or alternatively, wherein the nose closing mechanism pivots to accept different user nose profiles. Additionally or alternatively, wherein the nose closing mechanism has a left portion and a right portion, and wherein left portion and the right portion each include a pawl member and a plurality of engagement teeth, wherein the pawl member and ones of the plurality of engagement teeth cooperate to maintain a position of the left portion and the right portion.
  • the nose closing mechanism is a fold-away nose-cup, wherein the fold-away nose-cup can be moved to a first position, whereby a user’s air passages are substantially unblocked, and moved to a second position, whereby the user’s air passages are blocked from liquid ingress.
  • a holographic display system including: a light engine; a waveguide; and one or more diffraction gratings, wherein the light engine receives information and transmits the information optically through the waveguide such that the information appears to the user at the location of the one or more diffraction gratings.
  • the lens has an internal surface and an external surface and wherein the image waveguide and the one or more diffraction gratings are coupled to either an internal surface or an external surface. Additionally or alternatively, wherein the lens has an internal surface and an external surface and wherein the image waveguide and the one or more diffraction gratings are in between the internal surface and the external surface. Additionally or alternatively, wherein the lens is curved. Additionally or alternatively, wherein the one or more diffraction gratings is curved. Additionally or alternatively, wherein the one or more diffraction gratings is curved. Additionally or alternatively, wherein the combination of the body and the lens result in a low- profile design. Additionally or alternatively, wherein the low-profile design allows for a field of view of the user of about 115 degrees. Additionally or alternatively, wherein the low-profile
  • a design provides an eye relief of less than 25 mm. Additionally or alternatively, further including a breather tube coupled to the body, wherein the breather tube facilitates pressure equalization within the facemask.
  • a multi-use facemask for a user comprising: a body; a lens coupled to the body, wherein the combination of the lens, the body, and a portion of the user’s face create a cavity; and a self-adjusting pressure system that automatically adjusts a pressure inside the cavity, wherein the self-adjusting pressure system includes a pressure vessel and a pressure regulator, wherein the pressure regulator has a portion exposed to the ambient pressure. Additionally or alternatively, wherein the portion is a diaphragm. Additionally or alternatively, wherein the facemask includes a nose clip.
  • the nose clip pivots to accept different user nose profiles. Additionally or alternatively, wherein the nose clip has a left portion and a right portion, and wherein left portion and the right portion each include a pawl member and a plurality of engagement teeth, wherein the pawl member and ones of the plurality of engagement teeth cooperate to maintain a position of the left portion and the right portion. Additionally or alternatively, further including a fold-away nose-cup, wherein the fold-away nose-cup can be moved to a first position, whereby a user’s air passages are substantially unblocked, and moved to a second position, whereby the user’s air passages are blocked from liquid ingress.
  • a holographic display system including: a light engine; a waveguide; and one or more diffraction gratings, wherein the light engine receives information and transmits the information optically through the waveguide such that the information appears to the user proximate the lens.
  • the lens has an internal surface and an external surface and wherein the image waveguide and the one or more diffraction gratings are coupled to either the internal surface or the external surface.
  • the lens has an internal surface and an external surface and wherein the image waveguide and the one or more diffraction gratings are in between the internal surface and the external surface.
  • the lens is curved. Additionally or alternatively, wherein the one or more diffraction gratings is curved. Additionally or alternatively, wherein the one or more diffraction gratings is curved.
  • a profile design wherein the low-profile design allows for a field of view of the user of about 115 degrees. Additionally or alternatively, wherein the low-profile design provides an eye relief of less than 25 mm.

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  • Physics & Mathematics (AREA)
  • General Physics & Mathematics (AREA)
  • Optics & Photonics (AREA)
  • Holo Graphy (AREA)

Abstract

L'invention concerne un masque facial de protection qui comprend un système d'affichage holographique et en particulier des guides d'images holographiques (ci-après « HID ») permettant de relayer un contenu d'affichage dans le champ de vision de l'utilisateur à partir d'un moteur d'affichage tout en perturbant une surface aussi petite que possible du champ de vision (« FOV ») avec le matériel d'affichage. Dans certains modes de réalisation (ou selon les besoins), les guides d'images holographiques peuvent fournir des images lisibles de jour et de nuit avec un champ de vision de 25 V x 40 H, une fréquence d'image de 60 images/seconde, un contraste > 1000/1, une résolution de 720 p et toute la palette de couleurs. De plus, ou en variante aux guides d'images holographiques, certains modes de réalisation du masque facial ne contiennent pas de déflecteur pour nez standard, mais plutôt des éléments d'équilibrage qui permettent à l'utilisateur d'équilibrer la pression à l'intérieur des cavités oculaires et d'empêcher l'utilisateur de se blesser. Dans certains modes de réalisation, un masque facial comprend un système d'auto-réglage de la pression.
PCT/US2019/051501 2018-09-17 2019-09-17 Masque multi-usage avec affichage facultatif et mise sous pression et équilibrage intégrés Ceased WO2020123006A2 (fr)

Applications Claiming Priority (4)

Application Number Priority Date Filing Date Title
US201862732361P 2018-09-17 2018-09-17
US201862732370P 2018-09-17 2018-09-17
US62/732,370 2018-09-17
US62/732,361 2018-09-17

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WO2020123006A2 true WO2020123006A2 (fr) 2020-06-18
WO2020123006A3 WO2020123006A3 (fr) 2020-08-20

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PCT/US2019/051432 Ceased WO2020060989A1 (fr) 2018-09-17 2019-09-17 Masque ayant un système d'affichage intégré
PCT/US2019/051501 Ceased WO2020123006A2 (fr) 2018-09-17 2019-09-17 Masque multi-usage avec affichage facultatif et mise sous pression et équilibrage intégrés

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WO2020123006A3 (fr) 2020-08-20

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