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1.发明公开
公开(公告)号：EP3961294A1
公开(公告)日：2022-03-02
申请号：EP21168909.6
申请日：2021-04-16
发明人： CHIEN, HUNG-TA
IPC分类号： G02B27/10
摘要： The disclosure provides an optical waveguide, a manufacturing method of an optical waveguide, and a head-mounted display device. The optical waveguide has a first optical region and a second optical region for transmitting an image beam. The optical waveguide includes a plate body, multiple first light-guiding optical elements, and multiple optical microstructures. The first light-guiding optical elements are disposed in parallel lines on a light-guiding plane inside the plate body. The light-guiding plane is located in the first optical region, and there is a spacing between the adjacent first light-guiding optical elements. The image beam transmitted to he light-guiding plane is separated into multiple sub image beams, and the transmission paths of the sub image beams are at least partially different. The optical coupling-out structure is disposed in the plate body and is located in the second optical region.
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2.发明公开
公开(公告)号：EP3570095A1
公开(公告)日：2019-11-20
申请号：EP19173261.9
申请日：2019-05-08
发明人： LO, YI-CHIEN , CHIEN, HUNG-TA
IPC分类号： G02F1/13 , G02F1/13363 , G02F1/1335 , G02B27/28 , G02B27/01 , G09G3/00
摘要： A display for near-eye, virtual reality and augmented reality applications is disclosed. An input beam (LB0) is reflected in a beam-splitting element (110) towards a reflective liquid crystal panel (140). A polarisation modulating element (120) and a polarisation-dependent beam-shifting element (130) are successively positioned between the splitter and the LC-panel. These produce two beams (LB1, LB2), sequential in time but having orthogonal polarisations and shifted in position, which are incident on the LC-panel. After passing back through the three elements, two image beams (IB1', IB2') having the same polarisation state are produced and are projected onto a target. The beams are shifted in position with respect to each other and the target receives two image frames sequentially in time. Each pixel displayed in one image frame overlaps with the respective pixel in the other. In this way, a higher resolution image can be achieved.
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公开(公告)号：EP3964879A1
公开(公告)日：2022-03-09
申请号：EP21192522.7
申请日：2021-08-23
发明人： SHIH, CHIH-WEI , CHIEN, HUNG-TA
摘要： A manufacturing method of waveguide and a head mounted display device having the waveguide are provided. The head mounted display device is configured to be placed in front of at least one eye of a user, and includes a display unit, the first waveguide and the second waveguide. The display unit is configured to provide an image beam. The first waveguide is located between the display unit and the second waveguide. The first waveguide is configured to transmit the image beam to the second waveguide and adjust a light shape of the image beam to maintain a field angle and expand a pupil in a single dimension. The second waveguide is configured to transmit the image beam to the at least eye of the user, and the second waveguide can extend a light transmission path and provide a uniform image beam.
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公开(公告)号：EP3819702A1
公开(公告)日：2021-05-12
申请号：EP20205932.5
申请日：2020-11-05
发明人： CHIEN, HUNG-TA
IPC分类号： G02B27/01
摘要： A near-eye optical system is configured to receive an image beam. The near-eye optical system includes a first optical waveguide, configured to expand the image beam in a first direction, and including a first surface, a second surface, a plurality of first reflecting slopes, and a plurality of second reflecting slopes. The first surface includes a first light-entering area. The second surface is opposite to the first surface. The second surface includes a concave area aligned with the first light-entering area, the concave area including a flat bottom surface, and a first inclined sidewall and a second inclined sidewall opposite to each other. The first reflecting slopes are disposed on the second surface, and the second reflecting slopes are disposed on the second surface.
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公开(公告)号：EP3940433A1
公开(公告)日：2022-01-19
申请号：EP21185092.0
申请日：2021-07-12
发明人： CHIEN, HUNG-TA
摘要： A waveguide and a head-mounted display device are provided. The waveguide is used for transmitting an image beam. The waveguide includes a plate, at least one coupling-in prism, and microstructures. The plate has a first surface and a second surface. The image beam enters the plate through the first surface. The coupling-in prism is located on the second surface. The coupling-in prism has a first inclined surface, and the image beam is reflected by the first inclined surface and then transmitted in the plate. The microstructures are located on the second surface. Each microstructure has a second inclined surface. The image beam exits from the first surface after being reflected by the second inclined surface. A difference between refractive indices of the coupling-in prism and the microstructures is less than 0.05.
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公开(公告)号：EP3650921A3
公开(公告)日：2020-08-26
申请号：EP19203774.5
申请日：2019-10-17
发明人： LO, YI-CHIEN , CHIEN, HUNG-TA , LO, HSIN-HSIANG
摘要： An optical transmitting module and a head mounted display device are provided. The optical transmitting module includes a waveguide and a first lens. The waveguide is located on a transmission path of an image beam. The waveguide includes a plurality of beam splitters configured to split the image beam the image beam into a first image beam and a second image beam. The second image beam reflected by the beam splitter is outputted from the waveguide, so as to display a virtual image. The first lens causes a plurality of virtual images displayed by a plurality of the second image beams reflected from different beam splitters at the same angle to coincide on a focal plane of the first lens. The head mounted display device can eliminate a ghost image phenomenon that occurs when the user observes the images displayed in a range closer to the eye.
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公开(公告)号：EP3650921A2
公开(公告)日：2020-05-13
申请号：EP19203774.5
申请日：2019-10-17
发明人： LO, YI-CHIEN , CHIEN, HUNG-TA , LO, HSIN-HSIANG
摘要： An optical transmitting module and a head mounted display device are provided. The optical transmitting module includes a waveguide and a first lens. The waveguide is located on a transmission path of an image beam. The waveguide includes a plurality of beam splitters configured to split the image beam the image beam into a first image beam and a second image beam. The second image beam reflected by the beam splitter is outputted from the waveguide, so as to display a virtual image. The first lens causes a plurality of virtual images displayed by a plurality of the second image beams reflected from different beam splitters at the same angle to coincide on a focal plane of the first lens. The head mounted display device can eliminate a ghost image phenomenon that occurs when the user observes the images displayed in a range closer to the eye.
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公开(公告)号：EP4063922A1
公开(公告)日：2022-09-28
申请号：EP22163482.7
申请日：2022-03-22
发明人： CHUANG, FU-MING , CHIEN, HUNG-TA
摘要： A light homogenizing element (100) includes a light incident surface and at least one diffusion surface, including: a first substrate (110), a carrier layer (140), a piezoelectric film (120), a driving electrode (150), a light-transmitting layer (160), and multiple light diffusion microstructures (190). The first substrate (110) includes a first surface (111) and a second surface (112) opposite to each other. The carrier layer (140) is located on the first surface (111) of the first substrate (110) and includes a light passing region (CA) penetrating the carrier layer (140), and includes a protruding structure (PS) enclosing the light passing region (CA). The light-transmitting layer (160) is provided overlapping on the protruding structure (PS), and the surface of the light-transmitting layer (160) covering the light passing region (CA) is the light incident surface. The multiple light diffusion microstructures (190) are provided on the at least one diffusion surface, and projections of the multiple light diffusion microstructures on the light-transmitting layer are located in the light passing region (CA).
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公开(公告)号：EP3819701A1
公开(公告)日：2021-05-12
申请号：EP20205931.7
申请日：2020-11-05
发明人： PENG, KUEI-EN , SHIH, CHIH-WEI , CHIEN, HUNG-TA
IPC分类号： G02B27/01
摘要： A near-eye optical system, for receiving an image beam, includes an optical waveguide, configured to expand the image beam in a direction, and including a near-eye surface and a structure surface. The structure surface includes a light incident area and is opposite to the near-eye surface. The light incident area is located in a transmission path of the image beam. A plurality of reflective inclined surfaces are disposed on the structure surface and located at one side of the light incident surface and arranged along the direction. The structure surface is sequentially divided into the light incident area and a plurality of optical areas along the direction. A line number density of the reflective inclined surfaces in the optical area closest to the light incident area in the direction is less than a line number density of the reflective inclined surfaces in the optical area furthest from the light incident area in the direction.
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