Abstract: An optical system is provided. The optical system includes an image generator configured to output image signals for configuring a virtual image, and an infrared (IR) image signal, a multipath optical element configured to guide the beams, a diffraction grating configured to diffract parts of the output beams and transmit other parts of the output beams, an outcoupler configured to allow the diffracted beams to exit the multipath optical element, a first camera configured to sense a pattern of reflection of an IR beam exiting the outcoupler, an IR filter diffraction element, a second camera configured to sense a pattern of reflection of the IR beam projected toward the real world, and a processor configured to determine a line of sight of a user based on the pattern sensed by the first camera, and to determine depth information of the object based on the pattern sensed by the second camera.

Abstract: A hollow shielding structure for different types of circuit elements is provided. The hollow shielding structure includes at least one element mounted on a printed circuit board (PCB), a shield dam surrounding the at least one element, and a shield cover is configured to be electrically coupled to an upper portion of the shield dam and cover the at least one element, with a gap formed between the at least one element and the shield cover.

Abstract: Provided is a virtual image display device including: an image generator outputting a virtual image; a filter transmitting light in a first polarization state in the output virtual image; a multipath optical element guiding the transmitted light in the first polarization state; a first optical element arranged on a first side of the multipath optical element and allowing the guided light in the first polarization state and real-world light to pass therethrough; a second optical element arranged on a second side opposite to the first side of the multipath optical element and allowing the real-world light to pass therethrough; and a processor controlling the image generator, the first optical element, and the second optical element.

Abstract: Provided is a virtual image display device including: an image generator outputting a virtual image; a filter transmitting light in a first polarization state in the output virtual image; a multipath optical element guiding the transmitted light in the first polarization state; a first optical element arranged on a first side of the multipath optical element and allowing the guided light in the first polarization state and real-world light to pass therethrough; a second optical element arranged on a second side opposite to the first side of the multipath optical element and allowing the real-world light to pass therethrough; and a processor controlling the image generator, the first optical element, and the second optical element.

Abstract: A hollow shielding structure for different types of circuit elements is provided. The hollow shielding structure includes at least one element mounted on a printed circuit board (PCB), a shield dam surrounding the at least one element, and a shield cover is configured to be electrically coupled to an upper portion of the shield dam and cover the at least one element, with a gap formed between the at least one element and the shield cover.

Abstract: An electromagnetic interference (EMI) shielding structure and a manufacturing method thereof are provided. The EMI shielding structure includes a shielding dam provided on a printed circuit board, the shielding dam forming a closed loop that defines a periphery of adjacent shielding regions of the printed circuit board; an insulating member that is provided on the adjacent shielding regions within the shielding dam, the insulating member covering circuit devices provided in the adjacent shielding regions; and a shielding member that covers an upper surface of the insulating member, wherein the shielding dam includes a border portion surrounding the adjacent shielding regions, and a partition portion disposed between the adjacent shielding regions and within the border portion.

Abstract: A hollow shielding structure for different types of circuit elements is provided. The hollow shielding structure includes at least one element mounted on a printed circuit board (PCB), a shield dam surrounding the at least one element, and a shield cover is configured to be electrically coupled to an upper portion of the shield dam and cover the at least one element, with a gap formed between the at least one element and the shield cover.

Abstract: A hollow shielding structure for different types of circuit elements is provided. The hollow shielding structure includes at least one element mounted on a printed circuit board (PCB), a shield dam surrounding the at least one element, and a shield cover is configured to be electrically coupled to an upper portion of the shield dam and cover the at least one element, with a gap formed between the at least one element and the shield cover.

Abstract: An optical system is provided. The optical system includes an image generator configured to output image signals for configuring a virtual image, and an infrared (IR) image signal, a multipath optical element configured to guide the beams, a diffraction grating configured to diffract parts of the output beams and transmit other parts of the output beams, an outcoupler configured to allow the diffracted beams to exit the multipath optical element, a first camera configured to sense a pattern of reflection of an IR beam exiting the outcoupler, an IR filter diffraction element, a second camera configured to sense a pattern of reflection of the IR beam projected toward the real world, and a processor configured to determine a line of sight of a user based on the pattern sensed by the first camera, and to determine depth information of the object based on the pattern sensed by the second camera.

Abstract: A hollow shielding structure for different types of circuit elements is provided. The hollow shielding structure includes at least one element mounted on a printed circuit board (PCB), a shield dam surrounding the at least one element, and a shield cover is configured to be electrically coupled to an upper portion of the shield dam and cover the at least one element, with a gap formed between the at least one element and the shield cover.

Abstract: An EMI shielding structure includes a shielding pad surrounding at least one circuit component mounted on a printed circuit board and grounded to a ground pad disposed on the printed circuit board; and a shield can configured to cover the at least one circuit component, wherein a portion of the shield can is attached to the shielding pad.

Abstract: A hollow shielding structure for different types of circuit elements is provided. The hollow shielding structure includes at least one element mounted on a printed circuit board (PCB), a shield dam surrounding the at least one element, and a shield cover is configured to be electrically coupled to an upper portion of the shield dam and cover the at least one element, with a gap formed between the at least one element and the shield cover.

Abstract: A hollow shielding structure for different types of circuit elements is provided. The hollow shielding structure includes at least one element mounted on a printed circuit board (PCB), a shield dam surrounding the at least one element, and a shield cover is configured to be electrically coupled to an upper portion of the shield dam and cover the at least one element, with a gap formed between the at least one element and the shield cover.

Abstract: An electromagnetic interference (EMI) shielding structure and a manufacturing method thereof are provided. The EMI shielding structure includes a printed circuit board (PCB), a plurality of elements mounted on a region of the PCB, an insulating dam provided on a peripheral portion of the region of the PCB and covering a portion of the plurality of elements; an insulating member provided on a remaining portion of the region the PCB that is surrounded by the insulating dam and covering a remaining portion of the plurality of elements; and a shielding layer covering outer surfaces of the insulating dam and the insulating member.

Abstract: An electromagnetic interference (EMI) shielding structure and a manufacturing method thereof are provided. The EMI shielding structure includes a printed circuit board (PCB), a plurality of elements mounted on a region of the PCB, an insulating dam provided on a peripheral portion of the region of the PCB and covering a portion of the plurality of elements; an insulating member provided on a remaining portion of the region the PCB that is surrounded by the insulating dam and covering a remaining portion of the plurality of elements; and a shielding layer covering outer surfaces of the insulating dam and the insulating member.

Abstract: An EMI shielding structure includes a shielding pad surrounding at least one circuit component mounted on a printed circuit board and grounded to a ground pad disposed on the printed circuit board; and a shield can configured to cover the at least one circuit component, wherein a portion of the shield can is attached to the shielding pad.

Abstract: An electromagnetic interference (EMI) shielding structure and a manufacturing method thereof are provided. The EMI shielding structure includes a shielding dam provided on a printed circuit board, the shielding dam forming a closed loop that defines a periphery of adjacent shielding regions of the printed circuit board; an insulating member that is provided on the adjacent shielding regions within the shielding dam, the insulating member covering circuit devices provided in the adjacent shielding regions; and a shielding member that covers an upper surface of the insulating member, wherein the shielding dam includes a border portion surrounding the adjacent shielding regions, and a partition portion disposed between the adjacent shielding regions and within the border portion.

Abstract: A hollow shielding structure for different types of circuit elements is provided. The hollow shielding structure includes at least one element mounted on a printed circuit board (PCB), a shield dam surrounding the at least one element, and a shield cover is configured to be electrically coupled to an upper portion of the shield dam and cover the at least one element, with a gap formed between the at least one element and the shield cover.

Abstract: Provided is a holographic recording method in which an interference fringe between a reference beam and a signal beam, modulated according to information regarding a plurality of hologram pixels, is recorded on a holographic recording medium, the holographic recording method including multiplexing-recording the interference fringe of the plurality of hologram pixels such that at least a part of the interference fringe recorded of neighboring hologram pixels of the plurality of hologram pixels is overlapped.

Abstract: Provided is a holographic recording method in which an interference fringe between a reference beam and a signal beam, modulated according to information regarding a plurality of hologram pixels, is recorded on a holographic recording medium, the holographic recording method including multiplexing-recording the interference fringe of the plurality of hologram pixels such that at least a part of the interference fringe recorded of neighboring hologram pixels of the plurality of hologram pixels is overlapped.