Patent ID: 11906757
Assignee: SAMSUNG ELECTRONICS CO., LTD.
Field: Optics (Instruments)
Classification: CPC G | IPC G

Claim 18:
19. A method of deflecting a beam, the method comprising:
deflecting, by a first deflection element, light of a first wavelength band having a first polarization direction in a first direction;
changing, by a first general-purpose polarization conversion element, a polarization direction of the light of the first wavelength band from the first polarization direction to a second polarization direction that intersects the first polarization direction, and converting a polarization direction of light of a second wavelength band that is different from the first wavelength band from the second polarization direction to the first polarization direction;
deflecting, by a second deflection element, the light of the first wavelength band having the second polarization direction in a second direction that intersects the first direction;
deflecting, by a third deflection element, the light of the second wavelength band having the first polarization direction in the first direction;
converting, by a second general-purpose polarization conversion element, a polarization direction of the light of the second wavelength band from the first polarization direction to the second polarization direction, and converting the polarization direction of the light of the second wavelength band from the second polarization direction to the first polarization direction;
deflecting, by a fourth deflection element, the light of the second wavelength band having the second polarization direction in the second direction;
deflecting, by a fifth deflection element, the light having the first polarization direction in the second direction;
converting, by a third general-purpose polarization conversion element, the polarization direction of the light of the first wavelength band, the polarization direction of the light of the second wavelength band, and the polarization direction of the light of the third wavelength band;
deflecting, by a sixth deflection element, the light having the second polarization direction in the first direction; and
changing, by a final polarization conversion element, the polarization direction of the light of the first wavelength band, the polarization direction of the light of the second wavelength band, and the polarization direction of the light of the third wavelength band to coincide with one another,
wherein the light of the first wavelength band and the light of the second wavelength band sequentially pass through the first deflection element, the first general-purpose polarization conversion element, the second deflection element, the third deflection element, the second general-purpose polarization conversion element, and the fourth deflection element.