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US 12,411,350 B2Granted
Metalens-integrated optical engine
AssigneeWuyun Co., Inc.
InventorPo-Sung Kao
Life of this patent
Estimating the term…
Abstract
A metalens-integrated optical engine includes a plurality of light source modules, a collimating and deflecting module and a light-combining module. Each of the light source modules emits a light beam. The collimating and deflecting meta optical members is for collimating and deflecting the light beams such that the light beams are collimated and deflected and travel to a predetermined position. The light-combining module includes a light-combining meta optical array that is located at the predetermined position, that receives the light beams via the collimating and deflecting module, and that deflects the light beams, so as to combine the non-parallel light beams into a single light beam.
Claims8
A metalens-integrated optical engine comprising:
- a plurality of light source modules, each of the light source modules emitting a light beam with particular wavelength;
- a collimating and deflecting module including a plurality of collimating and deflecting meta optical members each of which is located on the path of the light beam emitted by a respective one of the light source modules, the collimating and deflecting meta optical members being for collimating and deflecting the light beams emitted by the light source modules such that the light beams emitted by the light source modules are collimated and deflected and travel to a predetermined position;
- and
- a light-combining module including a light-combining meta optical member that is located at one side of the collimating and deflecting module opposite to the light source modules, the light-combining meta optical member including a light-combining meta optical array that is located at the predetermined position, that receives the light beams collimated and deflected via the collimating and deflecting module, and that deflects the light beams based on wavelengths and angles of incidence, so as to combine the non-parallel light beams into a single light beam,
- wherein the light-combining meta optical member includes:
- a substrate that has a surface extending along an X-axis and a Y-axis, and
- a light-combining meta optical array that is disposed on the surface, that permits incidence of the light beams collimated and deflected via the collimating and deflecting module, and that includes a plurality of nanostructures that are arranged in an array, each of the nanostructures extending along a Z-axis that is perpendicular to the surface;
- and
- wherein each of the nanostructures of the light-combining meta optical array of the light-combining meta optical member satisfy the following phase shift formula relative to center of optical axis:
- Δφ
- nL
- (
- x
- ,
- y
- )
- =
- 2
-
- π
- λ
- n
-
- (
- x
-
- cos
-
- θ
- n
- +
- y
-
- sin
-
- θ
- n
- )
-
- sin
-
- γ
- n
- ;
- wherein n denotes all positive integers no greater than N, N is the number of the collimating and deflecting meta optical members, ΔφnL(x, y) denotes the phase shift of n-th light beam relative to the center of optical axis of the light-combining meta optical array generated by the light-combining meta optical array, an origin (0, 0) of the coordinate system being defined to be the center of an optical axis of the light-combining meta optical array, ΔφnL(0,0)=0, (x, y) denotes the position of each of the nanostructures of the light-combining meta optical array in the coordinate system, λn being the wavelength of n-th light beam, θn being the angle formed between the X-axis and the incident light beam of n-th light beam, and γn being the angle formed between the Z-axis and the incident light beam of n-th light beam.
42 more elements
A metalens-integrated optical engine comprising:
- a plurality of light source modules, each of the light source modules emitting a light beam with particular wavelength;
- a collimating and deflecting module including a plurality of collimating and deflecting meta optical members each of which is located on the path of the light beam emitted by a respective one of the light source modules, the collimating and deflecting meta optical members being for collimating and deflecting the light beams emitted by the light source modules such that the light beams emitted by the light source modules are collimated and deflected and travel to a predetermined position;
- a light-combining module including a light-combining meta optical member that is located at one side of the collimating and deflecting module opposite to the light source modules, the light-combining meta optical member including a light-combining meta optical array that is located at the predetermined position, that receives the light beams collimated and deflected via the collimating and deflecting module, and that deflects the light beams based on wavelengths and angles of incidence, so as to combine the non-parallel light beams into a single light beam;
- and
- a shaping module including a plurality of shaping meta optical arrays, each of the shaping meta optical arrays being disposed on a disposing surface of a respective one of the collimating and deflecting meta optical members, permitting incidence of the light beams emitted by the respective one of the light source modules, and including a plurality of nanostructures that are arranged in an array, each of the shaping meta optical arrays having a coordinate system that has an X-axis, a Y-axis and a Z-axis, and the disposing surface of the respective one of the collimating and deflecting meta optical members extending along the X-axis and the Y-axis, each of the nanostructures extending along a Z-axis that is perpendicular to the disposing surface;
- wherein the nanostructures of n-th shaping meta optical array satisfy the following phase shift formula relative to center of optical axis:
- Δφ
- nS
- (
- x
- n
- ,
- y
- n
- )
- =
- 2
-
- π
- λ
- n
- (
- x
- n
- 2
- +
- f
- xn
- 2
- -
- f
- xn
- +
- y
- n
- 2
- +
- f
- yn
- 2
- -
- f
- yn
- )
- -
- ΔΦ
- nS
- (
- x
- n
- ,
- y
- n
- )
- ;
- wherein
- ΔΦ
- nS
- (
- x
- n
- ,
- y
- n
- )
- =
- 2
-
- π
- λ
- n
-
- ∑
- i
- =
- 0
- ∞
- ∑
- j
- =
- 0
- ∞
- b
- nij
-
- x
- n
- 2
-
- i
-
- y
- n
- 2
-
- j
- ,
- and
-
- 2
-
- i
- +
- 2
-
- j
- ≥
- 4
- ;
- wherein n denotes all positive integers no greater than N, N is the number of the collimating and deflecting meta optical members, ΔφnS(xn, yn) denotes the phase shift of n-th light beam relative to the center of optical axis of n-th shaping meta optical array generated by n-th shaping meta optical array, an origin (0, 0) of the coordinate system being defined to be the center of an optical axis of n-th shaping meta optical array, ΔφnS(0,0)=0, (xn, yn) denotes the position of each of the nanostructures of n-th shaping meta optical array in the coordinate system, λn being the wavelength of n-th light beam, ƒxn being the focal length of n-th light beam along the X-axis, ƒyn being the focal length of n-th light beam, along the Y-axis, and ΔΦnS(xn, yn) being high-order term, and being for compensating the phase shift of high-order optical aberration, bnij being predetermined coefficients.
107 more elements
A metalens-integrated optical engine comprising:
- a plurality of light source modules, each of the light source modules emitting a light beam with particular wavelength;
- a collimating and deflecting module including a plurality of collimating and deflecting meta optical members each of which is located on the path of the light beam emitted by a respective one of the light source modules, the collimating and deflecting meta optical members being for collimating and deflecting the light beams emitted by the light source modules such that the light beams emitted by the light source modules are collimated and deflected and travel to a predetermined position, each of the collimating and deflecting meta optical members including:
- a substrate that has a surface extending along an X-axis and a Y-axis, and
- a collimating and deflecting meta optical array that is disposed on the surface, that permits incidence of the light beams emitted by the respective one of the light source modules, and that includes a plurality of nanostructures arranged in an array, each of the nanostructures extending along a Z-axis that is perpendicular to the surface,
- wherein the nanostructures of the collimating and deflecting meta optical array of n-th collimating and deflecting meta optical member satisfy the following phase shift formula relative to a center of an optical axis:
- Δφ
- nC
- (
- x
- n
- ,
- y
- n
- )
- =
- -
- 2
-
- π
- λ
- n
-
- (
- x
- n
- 2
- +
- f
- xcn
- 2
- -
- f
- xcn
- +
- y
- n
- 2
- +
- f
- ycn
- 2
- -
- f
- ycn
- -
- (
- x
- n
-
- cos
-
- θ
- n
- +
- y
- n
-
- sin
-
- θ
- n
- )
-
- sin
-
- γ
- n
- )
- -
- ΔΦ
- nC
- (
- x
- n
- ,
- y
- n
- )
- ;
- wherein
- ΔΦ
- nC
- (
- x
- n
- ,
- y
- n
- )
- =
- 2
-
- π
- λ
- n
-
- ∑
- i
- =
- 0
- ∞
- ∑
- j
- =
- 0
- ∞
- a
- nij
-
- x
- n
- 2
-
- i
-
- y
- n
- 2
-
- j
- ,
- and
-
- 2
-
- i
- +
- 2
-
- j
- ≥
- 4
- ,
- wherein n denotes all positive integers no greater than N, N is the number of the collimating and deflecting meta optical members, ΔφnC(xn, yn) denotes the phase shift of n-th light beam relative to the center of an optical axis of the collimating and deflecting meta optical array of n-th collimating and deflecting meta optical member generated by the collimating and deflecting meta optical array of n-th collimating and deflecting meta optical member, an origin (0, 0) of the coordinate system being defined to be the center of the optical axis of the collimating and deflecting meta optical array of n-th collimating and deflecting meta optical member, ΔφnC(0,0)=0, (xn, yn) denotes the position of each of the nanostructures of the collimating and deflecting meta optical array of n-th collimating and deflecting meta optical member in the coordinate system, λn being the wavelength of n-th light beam, ƒxcn being the focal length of the collimating and deflecting meta optical array along the X-axis, ƒycn being the focal length of the collimating and deflecting meta optical array along the Y-axis, θn being the angle formed between the X-axis and the imaging light beam of n-th light beam, γn being the angle formed between the Z-axis and the imaging light beam of n-th light beam, ΔΦnC(xn, yn) being high-order term, and being for compensating the phase shift of high-order optical aberration, αnij being predetermined coefficients;
- a shaping module including a plurality of shaping meta optical arrays, each of the shaping meta optical arrays being disposed on a disposing surface of a respective one of the collimating and deflecting meta optical members for shaping the light beams emitted by the respective one of the light source modules;
- and
- a light-combining module receiving the light beams collimated and deflected via the collimating and deflecting module, and combining the non-parallel light beams into a single light beam,
- wherein the collimating and deflecting meta optical arrays of each of the collimating and deflecting meta optical members are formed on a surface of the collimating and deflecting meta optical member proximate to the light-combining meta optical member, and each of the shaping meta optical arrays of the shaping module is located at another surface of the respective one of the collimating and deflecting meta optical members that is proximate to the light source modules.
135 more elements
Dependencies are inferred from the claim text.