Shenzhen Optiark Semiconductor Technologies Limited

Shenzhen Qize Technology Partnership (limited Partnership)

Other

Shenzhen Optiave Display Technology Co., Ltd.

Tapani Kalervo Levola

Yisheng Zhu

Houqiang Jiang

Yifan Zhu

A display apparatus comprises an optical engine, a modifying unit, and a diffractive waveguiding expander device. The optical engine is configured to form first input light, which comprises a plurality of input light beams representing an input image. The modifying unit is configured to form second input light from the first input light. The diffractive waveguiding expander device is configured to form output light by diffractively expanding the second input light, where the output light comprises a plurality of output light beams representing said input image. The modifying unit contain at least one prism, which compensates the angular dispersion between the plurality of output light beams caused by the possibly exists imperfection of the waveguiding expander device.

Display apparatus comprising diffractive elements

A display apparatus for displaying a virtual image (VIMG) includes a rotating expander device (EPE) to form light beams (B,B) of output light (OUT) by expanding light beams (B,B) of input light (IN), the expander device (EPE) includes: a waveguide plate (SUB), an in-coupling element (DOE) to form first guided light (B) and second guided light (B) by coupling input light (IN) into the waveguide plate (SUB), a first out-coupling element (DOE) to form output light (OUT) by coupling the first guided light (B) out of the waveguide plate (SUB), and a second out-coupling element (DOE) to form output light (OUT) by coupling the second guided light (B) out of the waveguide plate (SUB). The in-coupling element (DOE) has a first input grating vector (V) and a second input grating vector (V), and an angle (α) between the first and second input grating vectors is between 60° and 120°.

Display apparatus for providing an enlarged display area

A display apparatus () for displaying a virtual image (VIMG) comprises: an optical engine (ENG) to form input light (IN), which represents an input image (IMG), an expander device (EPE) to form light beams (B,B) of output light (OUT) by expanding light beams (B,B) of the input light (IN), the expander device (EPE) comprising: a waveguide plate (SUB), a diffractive in-coupling element (DOE) to form first guided light (B) and second guided light (B) by coupling input light (IN) into the waveguide plate (SUB), wherein the display apparatus () comprises a base (BASE) and an actuating mechanism (MOTOR) to cause rotary motion of the expander device () with respect to the base (BASE), wherein an angle (γ) between an optical axis (AX) of the optical engine (ENG) and the axis (AX) of rotation of the expander device () is in the range of 10° to 45°.

Display device, a vehicle with a display device and display virtual image method

A display apparatus () for displaying a virtual image (VIMG) includes an expander device (EPE) to form light beams (B, B) of output light (OUT) by expanding light beams (B, B) of input light (IN), the expander device (EPE) including a waveguide plate (SUB), an in-coupling element (DOE) to form guided light (B) by coupling input light (IN) into the waveguide plate (SUB), and an out-coupling element (DOE) to form output light (OUT) by coupling the guided light (B) out of the waveguide plate (SUB), wherein the display apparatus () includes a base (BASE) and an actuating mechanism (MOTOR) to cause rotary and/or oscillatory motion of the waveguide plate (SUB) with respect to the base (BASE).

Head-up display having a large exit pupil

A diffractive beam expander device (EPE) includes a first spectral filter region (C) and a second spectral filter region (C) to provide a first optical route for blue and green light (B, G), and to provide a second optical router for red light (R). The expander device (EPE) includes a first Bragg grating region (BRG) to enhance optical absorption of red light (R) in the first spectral filter region (C). The expander device (EPE) includes a second Bragg grating region (BRG) to enhance optical absorption of blue light (B) in the second spectral filter region (C).

Optical expander device

An optical device (EPE) comprises a waveguide plate (SUB) comprising an in-coupling element (DOE), a first expander element (DOE), a second expander element (DOE) and an out-coupling element (DOE), wherein the out-coupling element (DOE) is arranged to form combined output light (OUT) by combining the first output light (OB) with the second output light (OB), wherein the in-coupling element (DOE) has a first grating period (d) for forming the first guided light (B), and wherein the in-coupling element (DOE) has a second different grating period (d) for forming the second guided light (B), wherein the optical device (EPE) comprises a first spectral filter region (C) to prevent coupling of red light from the in-coupling element (DOE) to the out-coupling element (DOE) via the first expander element (DOE). The optical device (EPE) can display a color image with an extended field of view.

Optical expander device for displaying wide color image, display device thereof, and method for outputting light and displaying an image

An optical device comprises a waveguide plate, which in turn comprises: an in-coupling element to form first guided light and second guided light by diffracting input light, first expander element to form third guided light by diffracting the first guided light, second expander element to form fourth guided light by diffracting the second guided light, and an out-coupling element to form first output light by diffracting the third guided light, and to form second output light by diffracting the fourth guided light, wherein the out-coupling element is arranged to form combined output light by combining the first output light with the second output light, wherein the in-coupling element has a first grating period for forming the first guided light, and wherein the in-coupling element has a second different grating period for forming the second guided light.

Optical expander device for providing an extended field of view

This invention relates to an optical expander device with its display device, and a method of light output and image display, including a waveguide plate, the first optical diffractive in-coupling element, the first retrieval unit, the second retrieval unit, the second optical diffractive expander element, the third optical diffractive expander element, and the fourth optical diffractive out-coupling element. The fourth optical diffractive out-coupling element forms part of the first output light (OB), by diffracting guided light, the third retrieval light (B), and the fourth retrieval light (B) to the same direction; simultaneously, the fourth optical diffractive out-coupling element diffracts the first direct-through light (B) and the second direct-through light (B) to the same direction, forming the other part of the first output light (OB). This device of the present disclosure may greatly improve the uniformity of the intensity distribution of the output light.

Optical expander device and its display device and method for outputting light and displaying image

A optical device includes a waveguide plate, which includes an in-coupling element to form first guided light (B) and a second guided light (B) by diffracting input light (IN), an expander element to form third guided light (B) by diffracting the first guided light (B), an out-coupling element to form first output light (OB) by diffracting the third guided light (B), a bypass element to form fourth guided light (B) by diffracting the second guided light (B), wherein the first guided light (B) propagates in a first direction, the second guided light (B) propagates in a second direction, and the angle &#x3b3;between the first direction) and the second direction is in the range of 60&#xb0; to 120&#xb0;, wherein the out-coupling element includes one or more augmenting regions.

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Shenzhen, China

Tapani Kalervo Levola