Abstract: Disclosed is a head mounted display which can secure an eye motion box having a certain level by implementing an image using a holographic optical element, the eye motion box being an area where a wearer can visually recognize the image, extend the field of view (FOV) of the wearer by disposing a lens (imaging lens) on an optical path between a display source and the holographic optical element, and secure an eye motion box having a certain level and extend the field of view (FOV) of the wearer by adjusting the positions of the display source and the lens.

Abstract: A holographic waveguide includes a light guide unit configured to guide lights; a first holographic optical element disposed on one surface or the other surface of the light guide unit and configured to diffract an input light; a second holographic optical element disposed on any one of the one surface and the other surface, and configured to receive a light diffracted by the first holographic optical element and to direct a part of the received light to the other one of the one surface and the other surface; a third holographic optical element disposed on a surface, and configured to receive diffracted lights by the second holographic optical element and to guide the lights; and a fourth holographic optical element configured to receive a diffracted light by the third holographic optical element, and to allow the light to be output from the light guide unit.

Abstract: The present disclosure provides an apparatus for manufacturing a diffractive optical element, the apparatus including: a prism for manufacturing a diffractive optical element, the prism comprising a photoreactive material attachment surface and a light reflecting surface inclined at a predetermined angle from the photoreactive material attachment surface; and a light source positioned at the opposite side of the prism with respect to the photoreactive material attached to the photoreactive material attachment surface, and configured to irradiate light toward the photoreactive material, and a method for manufacturing a diffractive optical element.

Abstract: An embodiment according to an aspect of the present disclosure provides a device for manufacturing a display lens, a method for manufacturing a display lens using the device, and a head-mounted display device including the display lens manufactured thereby. The device for manufacturing a display lens including a holographic optical element formed by recording a hologram on a photosensitive substrate, in which a substrate is coated with a photosensitive material, through irradiation of laser beams includes: a first laser light incidence unit configured to cause first laser light, converging along an irradiation direction, to be incident on one surface of the photosensitive substrate; and a second laser light incidence unit configured to cause second laser light, diverging at a plurality of points along an irradiation direction, to be incident on the other surface of the photosensitive substrate.

Abstract: A holographic optical element and a method for producing the same are disclosed herein. In some embodiments, a method includes illuminating a first surface of a photopolymer resin layer, where the photopolymer resin layer comprises a photopolymer resin, illuminating a second surface of the photopolymer resin layer through a retardation layer disposed in the second surface, wherein the second surface is opposite the first surface, and recording an interference pattern in the photopolymer resin layer, wherein the interference pattern is created by interference between the first parallel laser beam and the second parallel laser beam. The holographic optical element is produced using a retardation layer to prevent an unwanted interference pattern from being formed in the process of recording an interference pattern in a photopolymer resin layer.

Abstract: A method of manufacturing a holographic optical element, including: irradiating a first surface of a photosensitive substrate with a first layer, and irradiating a second surface of the photosensitive substrate with a second laser. The light emitted by the first laser is spread in an irradiation direction and the light emitted by the second laser is collected in the irradiation direction to form a plurality of groups and a plurality of overlapping angles formed by a progress direction of the light emitted by the first laser and the progress direction of the light emitted by the second laser at a predetermined location of a photosensitive area, and each of the plurality of the overlapping angles are different from each other. A display device including the holographic optical element measured using this method.

Abstract: A system for observing an object by using a hologram optical element is disclosed herein. In some embodiments, a system for observing an object includes an infrared (IR) light source for emitting infrared light, a hologram optical element (HOE) including an optical element film, wherein the optical element film for reflecting and diffracting the emitted infrared light, wherein infrared light of a specific wavelength from among the emitted infrared light emitted is reflected towards the object, and an IR light detector for detecting the infrared light of a specific wavelength reflected from the object.

Abstract: The present application relates to an optical fingerprint recognition system and a mobile device comprising the same. The optical fingerprint recognition system is used without changing the original structure or configuration of the mobile device because it has a simple structure and a compact size. The optical fingerprint recognition system and the mobile device having excellent user identification or authentication capability through fingerprints are provided.

Abstract: Disclosed is a holographic waveguide including a light guide unit configured to guide lights; a first holographic optical element disposed on one surface or the other surface of the light guide unit and configured to diffract an input light; a second holographic optical element disposed on any one of the one surface and the other surface, and configured to receive a light diffracted by the first holographic optical element and to direct a part of the received light to the other one of the one surface and the other surface; a third holographic optical element disposed on a surface, and configured to receive diffracted lights by the second holographic optical element and to guide the lights; and a fourth holographic optical element configured to receive a diffracted light by the third holographic optical element, and to allow the light to be output from the light guide unit.

Abstract: An embodiment according to an aspect of the present disclosure provides a device for manufacturing a display lens, a method for manufacturing a display lens using the device, and a head-mounted display device including the display lens manufactured thereby. The device for manufacturing a display lens including a holographic optical element formed by recording a hologram on a photosensitive substrate, in which a substrate is coated with a photosensitive material, through irradiation of laser beams includes: a first laser light incidence unit configured to cause first laser light, converging along an irradiation direction, to be incident on one surface of the photosensitive substrate; and a second laser light incidence unit configured to cause second laser light, diverging at a plurality of points along an irradiation direction, to be incident on the other surface of the photosensitive substrate.

Abstract: Disclosed is a head mounted display which can secure an eye motion box having a certain level by implementing an image using a holographic optical element, the eye motion box being an area where a wearer can visually recognize the image, extend the field of view (FOV) of the wearer by disposing a lens (imaging lens) on an optical path between a display source and the holographic optical element, and secure an eye motion box having a certain level and extend the field of view (FOV) of the wearer by adjusting the positions of the display source and the lens.

Abstract: A head mounted display is disclosed herein. In some embodiments, a head mounted display includes a lens unit configured to be disposed in front of an eye of a wearer; an holographic optical element disposed on an eye side surface or a surface opposite the eye side surface of the lens unit; and an image display unit configured to be disposed on a lateral side of the eye of the wearer and configured to output image display light. The image display unit includes at least one of a liquid crystal display panel or an organic light emitting display panel to output the image display light toward the holographic optical element, and the holographic optical element diffracts the image display light and reflects the diffracted image display light toward the eye of the wearer.

Abstract: The present application provides a replicating method and a replicating device of a transmission type holographic optical element capable of mass-replicating the transmission type holographic optical element by a continuous and economical process.

Abstract: The present application relates to a sheet comprising, in a single layer, a first light control part capable of providing light always totally reflected only in a specific interlayer laminate structure among sheet constructions; and a second light control part capable of providing light whose total reflection is determined according to a fingerprint pattern in contact with the surface layer of the sheet by changing a part of the light provided from the first light control part and totally reflected in the specific interlayer laminate structure at a predetermined angle and emitting it to reach the surface layer of the sheet without being totally reflected in the specific interlayer laminate structure, and a device thereof. The sheet has excellent user identification or authentication capability through a fingerprint and can be applied to a large area display device to recognize a plurality of fingerprint patterns without being influenced by each other.

Abstract: A method for controlling a digital device according to the present application can control the device so as to execute a command corresponding to a single fingerprint or a plurality of fingerprints using a sheet capable of simultaneously recognizing a plurality of fingerprints. Accordingly, a user's usability can be greatly improved, and a complicated encryption function using a plurality of fingerprints can be implemented, so that the security of the digital device can be greatly improved.

Abstract: The present application relates to a sheet comprising, in a single layer, a first light control part capable of providing light always totally reflected only in a specific interlayer laminate structure among sheet constructions; and a second light control part capable of providing light whose total reflection is determined according to a fingerprint pattern in contact with the surface layer of the sheet by changing a part of the light provided from the first light control part and totally reflected in the specific interlayer laminate structure at a predetermined angle and emitting it to reach the surface layer of the sheet without being totally reflected in the specific interlayer laminate structure, and a device thereof. The sheet has excellent user identification or authentication capability through a fingerprint and can be applied to a large area display device to recognize a plurality of fingerprint patterns without being influenced by each other.

Abstract: A sheet for optical fingerprint recognition or input, and a device including such a sheet. The sheet can detect fingerprint information having high contrast with a simple structure and can be applied to a large area display device to recognize a plurality of fingerprint patterns without being influenced by each other.

Abstract: The present application relates to an optical fingerprint recognition system and a mobile device comprising the same. The optical fingerprint recognition system is used without changing the original structure or configuration of the mobile device because it has a simple structure and a compact size. The optical fingerprint recognition system and the mobile device having excellent user identification or authentication capability through fingerprints are provided.

Abstract: A method of manufacturing a holographic optical element, including: irradiating a first surface of a photosensitive substrate with a first layer, and irradiating a second surface of the photosensitive substrate with a second laser. The light emitted by the first laser is spread in an irradiation direction and the light emitted by the second laser is collected in the irradiation direction to form a plurality of groups and a plurality of overlapping angles formed by a progress direction of the light emitted by the first laser and the progress direction of the light emitted by the second laser at a predetermined location of a photosensitive area, and each of the plurality of the overlapping angles are different from each other. A display device including the holographic optical element measured using this method.

Abstract: The present application relates to a film mask comprising: a transparent substrate; a darkened light-shielding pattern layer provided on the transparent substrate; and groove portions provided in a region where the darkened light-shielding pattern layer is not provided, a method for manufacturing the same, a method for forming a pattern by using the same, and a pattern manufactured by using the same.