WO2023058997A1 - 디스플레이 장치 - Google Patents
디스플레이 장치 Download PDFInfo
- Publication number
- WO2023058997A1 WO2023058997A1 PCT/KR2022/014737 KR2022014737W WO2023058997A1 WO 2023058997 A1 WO2023058997 A1 WO 2023058997A1 KR 2022014737 W KR2022014737 W KR 2022014737W WO 2023058997 A1 WO2023058997 A1 WO 2023058997A1
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- WO
- WIPO (PCT)
- Prior art keywords
- optical element
- light
- diffraction optical
- display device
- compensating
- Prior art date
Links
- 230000003287 optical effect Effects 0.000 claims abstract description 81
- 239000004973 liquid crystal related substance Substances 0.000 claims description 3
- 239000006185 dispersion Substances 0.000 description 24
- 238000010586 diagram Methods 0.000 description 9
- 230000000694 effects Effects 0.000 description 5
- 210000001747 pupil Anatomy 0.000 description 3
- 230000003190 augmentative effect Effects 0.000 description 1
- 230000000052 comparative effect Effects 0.000 description 1
- 238000000034 method Methods 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 230000000644 propagated effect Effects 0.000 description 1
- 238000002834 transmittance Methods 0.000 description 1
Images
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
- G02B27/42—Diffraction optics, i.e. systems including a diffractive element being designed for providing a diffractive effect
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- 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
-
- 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
- G02B27/42—Diffraction optics, i.e. systems including a diffractive element being designed for providing a diffractive effect
- G02B27/4272—Diffraction optics, i.e. systems including a diffractive element being designed for providing a diffractive effect having plural diffractive elements positioned sequentially along the optical path
Definitions
- the present invention claims the benefits of the filing date of Korean Patent Application No. 10-2021-0131868 filed with the Korean Intellectual Property Office on October 05, 2021, all of which are included in the present invention.
- the present invention relates to a display device. Specifically, the present invention relates to a display device comprising an off-axis reflection diffraction optical element and a compensating diffraction optical element, thereby compensating for chromatic dispersion and reflection angle distortion.
- FIG. 1 shows an example of an off-axis reflection diffraction optical element (DOE) used for displaying an augmented reality image.
- DOE off-axis reflection diffraction optical element
- FIG. 1 (a) is a diagram for explaining chromatic dispersion occurring in an off-axis reflective diffractive optical element
- FIG. 1 (b) is a diagram for explaining a reflection angle distortion phenomenon generated in an off-axis reflective diffractive optical element.
- a display panel having a wide wavelength line width such as a liquid crystal display (LCD) panel or an organic light emitting diode (OLED) panel
- LCD liquid crystal display
- OLED organic light emitting diode
- LBS laser beam scanner
- a technical problem to be achieved by the present invention is to provide a display device capable of solving problems of reflection angle distortion and chromatic dispersion of an off-axis reflection diffraction optical element.
- a light source a compensating diffraction optical element that reflects light incident from the light source; and an off-axis reflection diffraction optical element for externally reflecting the light reflected from the compensating diffraction optical element, wherein the light reflected from the off-axis reflection diffraction optical element propagates in a direction parallel to the traveling direction of light incident from the light source.
- a display device characterized in that to do.
- a display device corrects or compensates reflection angle distortion and chromatic dispersion, thereby improving the sharpness of an image.
- the display device compensates for reflection angle distortion and chromatic dispersion, a display panel such as an LCD panel or an OLED panel that is generally used with a wide wavelength line width and has a wide beam angle can be used as a light source. As a result, wide versatility and a wide eye box can be implemented.
- 1 is a diagram for explaining chromatic dispersion and reflection angle distortion phenomena occurring in an off-axis reflective diffractive optical element.
- FIG. 2 is a diagram for explaining an example of a display device of the present invention that compensates for reflection angle distortion.
- FIG. 3 is a diagram for explaining an example of a display device of the present invention that compensates for chromatic dispersion.
- FIG. 4 is a diagram for explaining a comparative experiment example of the effect of improving the sharpness of an image by the display device of the present invention.
- compensation diffraction optical element 230 off-axis reflection diffraction optical element
- a and/or B means “A and B, or A or B”.
- the display device 200 of the present invention includes the compensating diffractive optical element 220, and thus corresponds to a device capable of compensating for reflection angle distortion and chromatic dispersion of light.
- the compensation diffraction optical element 220 reflects light incident from the light source 210 to the off-axis reflection diffraction optical element 230, and the off-axis reflection diffraction optical element 230 reflects the light reflected from the compensation diffraction optical element 220. reflect back to the outside.
- the compensation diffraction optical element 220 reflects light so that the traveling direction of the light reflected from the off-axis reflection diffractive optical element 230 is parallel to the traveling direction of the light incident from the light source.
- the compensating diffraction optical element 220 reflection angle distortion and chromatic dispersion of light can be compensated.
- FIG. 2 is a diagram for explaining an example of a display device 200 for compensating reflection angle distortion.
- the display device 200 may include a light source 210 , a compensation diffraction optical element 220 and an off-axis reflection diffraction optical element 230 .
- the light source 210 may radiate light to the compensating diffraction optical element 220 .
- light irradiated (incident) from the light source 210 to the compensating diffraction optical element 220 will be referred to as 'incident light'.
- the light source 210 may be implemented as a display panel having a wide wavelength line width, a generally used display panel, and a wide beam angle, such as a liquid crystal display (LCD) panel or an organic light emitting diodes (OLED) panel.
- the display device 200 can realize wide versatility and a wide eye box.
- the compensating diffraction optical element 220 may reflect incident light in the direction of the off-axis reflection diffraction optical element 230 .
- light incident from the compensating diffractive optical element 220 to the off-axis reflection diffractive optical element 230 will be referred to as 'first light'.
- the off-axis reflection diffraction optical element 230 may externally reflect the incident light (ie, the first light) reflected from the compensating diffraction optical element 220.
- the incident light ie, the first light
- 'second light' light reflected by the off-axis reflection diffraction optical element 230 and directed to the outside.
- the direction in which the second light travels, that is, the outside may be a direction in which a pupil of the observer is located.
- the compensation diffraction optical element 220 may adjust the reflection angle of the first light.
- the adjustment of the reflection angle by the compensating diffraction optical element 220 is to compensate for the reflection angle distortion generated by the off-axis reflection diffraction optical element 230 .
- incident light having an angle difference of 3 degrees (0 degrees to 3 degrees) has a reflection angle difference of 5 degrees (60 degrees to 65 degrees) by adjusting the reflection angle of the compensating diffractive optical element 220.
- the first light After being reflected as the first light, it is reflected again as the second light having a reflection angle difference of 3 degrees (0 degrees to 3 degrees) by the reflection of the off-axis reflection diffractive optical element 230.
- FIG. 3 is a diagram for explaining an example of a display device 200 for compensating for chromatic dispersion.
- the display device 200 may include a light source 210 , a compensation diffraction optical element 220 and an off-axis reflection diffraction optical element 230 .
- the light source 210 may radiate light (incident light) to the compensating diffraction optical element 220 .
- the light source 210 may be implemented as a display panel such as an LCD panel or an OLED panel, and in this case, the display device 200 may implement a wide versatility and a wide eye box.
- the compensating diffraction optical element 220 may reflect the incident light and make the first light incident in the direction of the off-axis reflection diffraction optical element 230 .
- the off-axis reflective diffraction optical element 230 may reflect the first light to propagate the second light to the outside.
- the direction in which the second light travels, that is, the outside may be a direction in which a pupil of the observer is located.
- the compensating diffraction optical element 220 may adjust chromatic dispersion of the first light. Adjustment of chromatic dispersion by the compensating diffractive optical element 220 is to compensate for chromatic dispersion generated by the off-axis reflection diffractive optical element 230 .
- the incident light is reflected as the first light emitted at different angles of light of different wavelengths (eg, red, green, and blue) by adjusting the chromatic dispersion of the compensating diffractive optical element 220. It can be. Thereafter, the first light may be reflected as a second light in which light of different wavelengths are emitted at the same angle (parallel) to each other by reflection (chromatic dispersion) in the off-axis reflection diffractive optical element 230 .
- different angles of light of different wavelengths eg, red, green, and blue
- the second light is propagated in parallel by the chromatic dispersion control of the compensating diffraction optical element 220, and the dispersion-corrected light is incident to the observer's pupil, so in the case of consisting only of the off-axis reflection diffraction optical element 230
- the resulting chromatic dispersion is compensated for or corrected.
- the display device 200 may be configured to simultaneously implement both embodiments. . That is, the display device 200 is configured to include the compensating diffraction optical element 220, so that the reflection angle distortion of light can be compensated for, as well as chromatic dispersion of light can be compensated.
- FIG. 4 is a diagram for explaining a comparison experiment example of an effect of improving the sharpness of an image by the display device 200. Referring to FIG. 4
- FIG. 4 (a) and (b) show the sharpness of an image by a conventional display device not including a compensating diffraction optical element (including only off-axis reflection diffraction optical elements), and FIG. 4 (c) and (d) Indicates the sharpness of the image by the display device 200 of the present invention including the compensating diffractive optical element.
- the display device 200 of the present invention compensates for at least one of the reflection angle distortion and chromatic dispersion of light generated from the off-axis reflection diffraction optical element, so that the sharpness of the image is relatively high. It can be seen that it increases with
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- Physics & Mathematics (AREA)
- General Physics & Mathematics (AREA)
- Optics & Photonics (AREA)
- Diffracting Gratings Or Hologram Optical Elements (AREA)
- Liquid Crystal (AREA)
- Electroluminescent Light Sources (AREA)
- Devices For Indicating Variable Information By Combining Individual Elements (AREA)
Abstract
Description
Claims (5)
- 광원;상기 광원으로부터 입사되는 광을 반사하는 보상 회절광학소자; 및상기 보상 회절광학소자에서 반사된 광을 외부로 반사하는 비축 반사 회절광학소자를 포함하고,상기 비축 반사 회절광학소자에서 반사되는 광은,상기 광원으로부터 입사되는 광의 진행 방향과 평행한 방향으로 진행하는 것을 특징으로 하는 디스플레이 장치.
- 제1항에 있어서,상기 광원은,LCD(liquid crystal display) 패널 또는 OLED(organic light emitting diodes) 패널인 것을 특징으로 하는 디스플레이 장치.
- 제1항에 있어서,상기 비축 반사 회절광학소자에서 반사되는 광은,상기 광원으로부터 입사되는 광의 진행 방향과 동일한 방향인 것을 특징으로하는 디스플레이 장치.
- 제1항에 있어서,상기 비축 반사 회절광학소자로 입사되는 광의 각도 차이는 상기 비축 반사 회절광학소자로부터 반사되는 광의 각도 차이와 상이하게 되며,상기 보상 회절광학소자는 상기 비축 반사 회절광학소자로부터 반사되는 광의 각도 차이가 상기 보상 회절광학소자로 입사되는 광의 각도 차이와 서로 같아지도록 보상하는 것을 특징으로 하는 디스플레이 장치.
- 제1항에 있어서,상기 비축 반사 회절광학소자로 입사되는 광은 파장에 따라 상기 비축 반사 회절광학소자로부터 반사되는 광의 각도가 상이하게 되며,상기 보상 회절광학소자는 상기 비축 반사 회절광학소자로부터 반사되는 광의 각도가 상기 보상 회절광학소자로 입사되는 광의 각도와 서로 같아지도록 보상하는 것을 특징으로 하는 디스플레이 장치.
Priority Applications (2)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
CN202280067614.4A CN118056155A (zh) | 2021-10-05 | 2022-09-30 | 显示装置 |
EP22878818.8A EP4407363A1 (en) | 2021-10-05 | 2022-09-30 | Display device |
Applications Claiming Priority (2)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
KR10-2021-0131868 | 2021-10-05 | ||
KR1020210131868A KR20230048902A (ko) | 2021-10-05 | 2021-10-05 | 디스플레이 장치 |
Publications (1)
Publication Number | Publication Date |
---|---|
WO2023058997A1 true WO2023058997A1 (ko) | 2023-04-13 |
Family
ID=85804503
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
PCT/KR2022/014737 WO2023058997A1 (ko) | 2021-10-05 | 2022-09-30 | 디스플레이 장치 |
Country Status (5)
Country | Link |
---|---|
EP (1) | EP4407363A1 (ko) |
KR (1) | KR20230048902A (ko) |
CN (1) | CN118056155A (ko) |
TW (1) | TW202321788A (ko) |
WO (1) | WO2023058997A1 (ko) |
Citations (6)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
KR20060117072A (ko) * | 2005-05-12 | 2006-11-16 | 삼성전기주식회사 | 회절형 광변조기를 이용한 배면투사형 디스플레이 장치 |
KR101361096B1 (ko) * | 2012-12-10 | 2014-02-12 | (주)그린광학 | 투과형 헤드마운트 디스플레이 광학시스템 |
JP2016500530A (ja) * | 2012-10-12 | 2016-01-14 | ソルラブス、インコーポレイテッド | コンパクトで低分散および低収差の補償光学走査システム |
KR20180056737A (ko) * | 2015-09-23 | 2018-05-29 | 매직 립, 인코포레이티드 | 오프-축 영상기를 이용한 눈 영상화 |
KR20190115215A (ko) * | 2018-04-02 | 2019-10-11 | 광운대학교 산학협력단 | 홀로그래픽 디스플레이 장치, 홀로그램 광학 시스템 및 홀로그램 영상 기록 방법 |
KR20210131868A (ko) | 2020-04-24 | 2021-11-03 | 가부시키가이샤 스기노 마신 | 세정 방법 |
-
2021
- 2021-10-05 KR KR1020210131868A patent/KR20230048902A/ko unknown
-
2022
- 2022-09-30 EP EP22878818.8A patent/EP4407363A1/en active Pending
- 2022-09-30 CN CN202280067614.4A patent/CN118056155A/zh active Pending
- 2022-09-30 TW TW111137282A patent/TW202321788A/zh unknown
- 2022-09-30 WO PCT/KR2022/014737 patent/WO2023058997A1/ko active Application Filing
Patent Citations (6)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
KR20060117072A (ko) * | 2005-05-12 | 2006-11-16 | 삼성전기주식회사 | 회절형 광변조기를 이용한 배면투사형 디스플레이 장치 |
JP2016500530A (ja) * | 2012-10-12 | 2016-01-14 | ソルラブス、インコーポレイテッド | コンパクトで低分散および低収差の補償光学走査システム |
KR101361096B1 (ko) * | 2012-12-10 | 2014-02-12 | (주)그린광학 | 투과형 헤드마운트 디스플레이 광학시스템 |
KR20180056737A (ko) * | 2015-09-23 | 2018-05-29 | 매직 립, 인코포레이티드 | 오프-축 영상기를 이용한 눈 영상화 |
KR20190115215A (ko) * | 2018-04-02 | 2019-10-11 | 광운대학교 산학협력단 | 홀로그래픽 디스플레이 장치, 홀로그램 광학 시스템 및 홀로그램 영상 기록 방법 |
KR20210131868A (ko) | 2020-04-24 | 2021-11-03 | 가부시키가이샤 스기노 마신 | 세정 방법 |
Also Published As
Publication number | Publication date |
---|---|
KR20230048902A (ko) | 2023-04-12 |
TW202321788A (zh) | 2023-06-01 |
EP4407363A1 (en) | 2024-07-31 |
CN118056155A (zh) | 2024-05-17 |
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