An optical element includes a substrate including a first surface and metal structure group including a plurality of metal structures, the metal structures being arranged on the first surface in a two-dimensionally isolated manner. Light is incident on the metal structure group in an oblique manner
An optical element includes a substrate including a first surface and metal structure group including a plurality of metal structures, the metal structures being arranged on the first surface in a two-dimensionally isolated manner. Light is incident on the metal structure group in an oblique manner with respect to the normal of the first surface from the metal-structure-group side or the substrate side, so that a polarization state of light that passes through the metal structure group and a polarization state of light that is reflected by the metal structure group differ from each other in accordance with a wavelength range.
대표청구항▼
1. An optical element, comprising: a substrate including a first surface; anda metal structure group including a plurality of three-dimensional metal structures, each of the metal structures having a first dimension in a first direction and a second dimension in a second direction perpendicular to t
1. An optical element, comprising: a substrate including a first surface; anda metal structure group including a plurality of three-dimensional metal structures, each of the metal structures having a first dimension in a first direction and a second dimension in a second direction perpendicular to the first direction, and having a thickness in a third direction, the metal structures made of metal containing aluminum and being arranged on the first surface of the substrate in a two-dimensional array of rows and columns in an isolated manner,wherein the metal structures are capable of generating localized surface plasmon resonance by receiving light incident thereupon,wherein each dimension of each of the metal structures in the first, second and third directions is equal to or less than a wavelength of light in a visible light range;wherein the incident light is incident on the metal structure group in an oblique manner with respect to the normal to the first surface of the substrate,wherein the incident light is divided into transmitted light that passes through the metal structure group and reflected light that is reflected by the metal structure group,wherein transmittance of light having a first polarization state has a minimum value in a first wavelength range of the incident light, and transmittance of light having a second polarization state has a minimum value in a second wavelength range of the incident light, and the first wavelength range and the second wavelength range are different from each other, andwherein the first dimension and the second dimension are in the range of 90 nm or more and 150 nm or less, and the thickness in the third direction is in the range of 10 nm or more and 150 nm or less, and the metal structures are periodically arranged at a period in the range of 180 nm or more and 300 nm or less. 2. The optical element according to claim 1, wherein the first polarization state is a p-polarized state and the second polarization state is a s-polarized state. 3. The optical element according to claim 1, wherein an angle between the incident light incident on the metal structure group in the oblique manner and the normal to the first surface is in the range of 30 degrees or more to 60 degrees or less. 4. The optical element according to claim 1, wherein the metal structures are periodically arranged in the metal structure group. 5. The optical element according to claim 4, wherein a separation between the metal structures is smaller than the wavelength of visible light. 6. The optical element according to claim 5, wherein the first dimension and the second dimension are smaller than the wavelength of visible light. 7. The optical element according to claim 4, wherein a period at which the metal structures are arranged parallel to an incident surface defined by an incident angle of the light incident on the metal structure group in the oblique manner with respect to the normal to the first surface differs from a period at which the metal structures are arranged perpendicular to the incident surface defined by the incident angle. 8. The optical element according to claim 1, wherein the metal structure group is covered with a dielectric member. 9. A color separating-combining optical system comprising: the optical element according to claim 1. 10. A projecting device comprising: an illumination optical system including a light source;the color separating-combining optical system according to claim 9; anda projection optical system. 11. An optical element, comprising: a substrate including a first surface; anda metal structure group including a plurality of three-dimensional metal structures, each of the metal structures having a first dimension in a first direction and a second dimension in a second direction perpendicular to the first direction, and having a thickness in a third direction, the metal structures being arranged on the first surface of the substrate in a two-dimensional array of rows and columns in an isolated manner,wherein the metal structures are capable of generating localized surface plasmon resonance by receiving light incident thereupon,wherein each dimension of each of the metal structures in the first, second and third directions is equal to or less than a wavelength of light in a visible light range,wherein the incident light is incident on the metal structure group in an oblique manner with respect to the normal to the first surface of the substrate,wherein the incident light is divided into transmitted light that passes through the metal structure group and reflected light that is reflected by the metal structure group,wherein a transmittance of light having a first polarization state has a minimum value in a first wavelength range of the incident light, a transmittance of light having a second polarization state has a minimum value in a second wavelength range of the incident light, and the first wavelength range and the second wavelength range are different from each other, andwherein the first dimension and the second dimension are in the range of 90 nm or more and 150 nm or less, the thickness in the third direction is in the range of 10 nm or more and 150 nm or less, and the metal structures are periodically arranged at a period in the range of 180 nm or more and 300 nm or less.
연구과제 타임라인
LOADING...
LOADING...
LOADING...
LOADING...
LOADING...
이 특허에 인용된 특허 (14)
Perkins Raymond T. ; Hansen Douglas P. ; Gardner Eric W. ; Thorne James M. ; Robbins Arthur A., Broadband wire grid polarizer for the visible spectrum.
King, William B.; Chen, Chungte W.; Hegg, Ronald G.; Gunther, John E.; Nichols, Richard W., Low-observability, wide-field-of-view, situation awareness viewing device.
Hegg Ronald G. (Los Angeles CA) Chern Mao-Jin (Rancho Palos Verdes CA) Au Anson (Los Angeles CA), Virtual image display having a high efficiency grid beamsplitter.
※ AI-Helper는 부적절한 답변을 할 수 있습니다.