CA3060162C - Diffractive grating with variable diffraction efficiency and method for displaying an image - Google Patents

Diffractive grating with variable diffraction efficiency and method for displaying an image Download PDF

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Publication number
CA3060162C
CA3060162C CA3060162A CA3060162A CA3060162C CA 3060162 C CA3060162 C CA 3060162C CA 3060162 A CA3060162 A CA 3060162A CA 3060162 A CA3060162 A CA 3060162A CA 3060162 C CA3060162 C CA 3060162C
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Canada
Prior art keywords
grating
zone
grating according
diffractive
diffraction
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Application number
CA3060162A
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English (en)
French (fr)
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CA3060162A1 (en
Inventor
Ismo Vartiainen
Juuso Olkkonen
Jussi Rahomaki
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Dispelix Oy
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Dispelix Oy
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Publication of CA3060162A1 publication Critical patent/CA3060162A1/en
Application granted granted Critical
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Classifications

    • G—PHYSICS
    • G02—OPTICS
    • G02B—OPTICAL ELEMENTS, SYSTEMS OR APPARATUS
    • G02B6/00—Light guides; Structural details of arrangements comprising light guides and other optical elements, e.g. couplings
    • G02B6/0001—Light guides; Structural details of arrangements comprising light guides and other optical elements, e.g. couplings specially adapted for lighting devices or systems
    • G02B6/0011—Light guides; Structural details of arrangements comprising light guides and other optical elements, e.g. couplings specially adapted for lighting devices or systems the light guides being planar or of plate-like form
    • G02B6/0033—Means for improving the coupling-out of light from the light guide
    • G02B6/0035—Means for improving the coupling-out of light from the light guide provided on the surface of the light guide or in the bulk of it
    • G02B6/0038—Linear indentations or grooves, e.g. arc-shaped grooves or meandering grooves, extending over the full length or width of the light guide
    • G—PHYSICS
    • G02—OPTICS
    • G02B—OPTICAL ELEMENTS, SYSTEMS OR APPARATUS
    • G02B5/00—Optical elements other than lenses
    • G02B5/18—Diffraction gratings
    • G02B5/1828—Diffraction gratings having means for producing variable diffraction
    • 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
    • G—PHYSICS
    • G02—OPTICS
    • G02B—OPTICAL ELEMENTS, SYSTEMS OR APPARATUS
    • G02B5/00—Optical elements other than lenses
    • G02B5/18—Diffraction gratings
    • G02B5/1809—Diffraction gratings with pitch less than or comparable to the wavelength
    • G—PHYSICS
    • G02—OPTICS
    • G02B—OPTICAL ELEMENTS, SYSTEMS OR APPARATUS
    • G02B5/00—Optical elements other than lenses
    • G02B5/18—Diffraction gratings
    • G02B5/1814—Diffraction gratings structurally combined with one or more further optical elements, e.g. lenses, mirrors, prisms or other diffraction gratings
    • G02B5/1819—Plural gratings positioned on the same surface, e.g. array of gratings
    • G—PHYSICS
    • G02—OPTICS
    • G02B—OPTICAL ELEMENTS, SYSTEMS OR APPARATUS
    • G02B5/00—Optical elements other than lenses
    • G02B5/18—Diffraction gratings
    • G02B5/1842—Gratings for image generation
    • G—PHYSICS
    • G02—OPTICS
    • G02B—OPTICAL ELEMENTS, SYSTEMS OR APPARATUS
    • G02B5/00—Optical elements other than lenses
    • G02B5/18—Diffraction gratings
    • G02B5/1876—Diffractive Fresnel lenses; Zone plates; Kinoforms
    • G02B5/188—Plurality of such optical elements formed in or on a supporting substrate
    • G—PHYSICS
    • G02—OPTICS
    • G02B—OPTICAL ELEMENTS, SYSTEMS OR APPARATUS
    • G02B6/00—Light guides; Structural details of arrangements comprising light guides and other optical elements, e.g. couplings
    • G02B6/0001—Light guides; Structural details of arrangements comprising light guides and other optical elements, e.g. couplings specially adapted for lighting devices or systems
    • G02B6/0011—Light guides; Structural details of arrangements comprising light guides and other optical elements, e.g. couplings specially adapted for lighting devices or systems the light guides being planar or of plate-like form
    • G02B6/0013—Means for improving the coupling-in of light from the light source into the light guide
    • G02B6/0015—Means for improving the coupling-in of light from the light source into the light guide provided on the surface of the light guide or in the bulk of it
    • G02B6/0016—Grooves, prisms, gratings, scattering particles or rough surfaces
    • 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
    • G02B2027/0123—Head-up displays characterised by optical features comprising devices increasing the field of view
    • G02B2027/0125—Field-of-view increase by wavefront division
    • 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
    • G02B6/00—Light guides; Structural details of arrangements comprising light guides and other optical elements, e.g. couplings
    • G02B6/24—Coupling light guides
    • G02B6/26—Optical coupling means
    • G02B6/34—Optical coupling means utilising prism or grating

Landscapes

  • Physics & Mathematics (AREA)
  • General Physics & Mathematics (AREA)
  • Optics & Photonics (AREA)
  • Diffracting Gratings Or Hologram Optical Elements (AREA)
CA3060162A 2017-05-08 2018-05-08 Diffractive grating with variable diffraction efficiency and method for displaying an image Active CA3060162C (en)

Applications Claiming Priority (3)

Application Number Priority Date Filing Date Title
FI20175412A FI128551B (en) 2017-05-08 2017-05-08 A diffractive lattice with varying diffraction efficiency and a method for displaying an image
FI20175412 2017-05-08
PCT/FI2018/050340 WO2018206847A1 (en) 2017-05-08 2018-05-08 Diffractive grating with variable diffraction efficiency and method for displaying an image

Publications (2)

Publication Number Publication Date
CA3060162A1 CA3060162A1 (en) 2018-11-15
CA3060162C true CA3060162C (en) 2023-07-25

Family

ID=64105185

Family Applications (1)

Application Number Title Priority Date Filing Date
CA3060162A Active CA3060162C (en) 2017-05-08 2018-05-08 Diffractive grating with variable diffraction efficiency and method for displaying an image

Country Status (7)

Country Link
US (1) US11086065B2 (https=)
EP (1) EP3622335B1 (https=)
JP (1) JP7276860B2 (https=)
CN (1) CN110651204B (https=)
CA (1) CA3060162C (https=)
FI (1) FI128551B (https=)
WO (1) WO2018206847A1 (https=)

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EP4226194A4 (en) * 2020-11-25 2024-10-30 Vuzix Corporation IMAGE LIGHT GUIDE WITH DIFFRACTIVE OPTICAL ZONE STRUCTURE
CN116547574A (zh) * 2020-11-25 2023-08-04 伊奎蒂公司 具有分区衍射光学器件的图像光导
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JP7465826B2 (ja) * 2021-02-02 2024-04-11 株式会社日立エルジーデータストレージ 導光板、導光板モジュールおよび画像表示装置
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Also Published As

Publication number Publication date
EP3622335A4 (en) 2021-02-24
FI20175412A1 (fi) 2018-11-09
JP7276860B2 (ja) 2023-05-18
EP3622335C0 (en) 2025-04-23
WO2018206847A1 (en) 2018-11-15
CA3060162A1 (en) 2018-11-15
EP3622335A1 (en) 2020-03-18
CN110651204A (zh) 2020-01-03
JP2020518864A (ja) 2020-06-25
EP3622335B1 (en) 2025-04-23
FI128551B (en) 2020-07-31
US11086065B2 (en) 2021-08-10
CN110651204B (zh) 2022-05-24
US20200166691A1 (en) 2020-05-28

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