A near-eye display device and a near-eye display method are provided. In the near-eye display device and method, displaying a first image and a second image in different time periods by using a display portion; converting light of the first image to first linearly polarized light and converting light of the second image to second linearly polarized light by using a polarization conversion portion, a polarization direction of the first linearly polarized light being different from that of the second linearly polarized light; receiving the first linearly polarized light and the second linearly polarized light, and causing them to be emitted towards different directions by using a polarization splitting portion; and transmitting the first linearly polarized light and transmitting the second linearly polarized light by using an image light transmission portion. It can solve the problem of fatigue and dizziness of user's eyes.

A three-dimensional-image display device includes a display unit, a variable focus lens unit, and a controller. The display unit sequentially displays a first image displayed by a first image signal and a second image displayed by a second image signal, and that projects a display light of the first image and a display light of the second image. The variable focus lens unit switches the focal lengths for the display lights to respectively form, as virtual images, the first image and the second image on a first display surface and a second display surface. The controller controls, on the basis of a start timing at which writing, of an image signal of a different image, to pixels of the display unit starts, a projecting timing at which the display unit projects the display light of the first image and the display light of the second image.

The present disclosure describes optical devices and methods for manufacturing such optical devices. Namely, an example optical device includes a first optical transparent thermoplastic layer, a second optical transparent thermoplastic layer, and in between both thermoplastic layers, a diffractive optical element adjacent to one thermoplastic layer, a spacer in between the diffractive optical element and the other thermoplastic layer and, a border enclosing the diffractive element thereby forming a sealed cavity.

A method, an apparatus, and a computer program product for modulating optics in a display are provided. An apparatus forms a plurality of zone plates in a liquid crystal using electric fields. Each zone plate has a center, and the centers are aligned along a first axis of the display. The apparatus moves the plurality of zone plates in a first direction along a second axis of the display different from the first axis of the display, while maintaining alignment of the centers of the plurality of zone plates along the first axis. Such movement is provided through repositioning of electric fields through the liquid crystal.

An eyeglass of a 3D glasses, a fabrication method thereof and a 3D glasses are provided. The eyeglass of the 3D glasses comprises: a substrate (2), configured to have a 3D function; and a lens (1) having a converging or diverging function, laminated on the substrate. The eyeglass of the 3D glasses and the 3D glasses have a myopic or hyperopic function simultaneously.

Provided is a display apparatus including an image forming optical system configured to form an image to be displayed, an eyepiece optical system configured to provide the image formed by the image forming optical system to a pupil of an observer, and an image shifting optical system disposed on an optical path between the image forming optical system and the eyepiece optical system, the image shifting optical system being configured to shift the image formed by the image forming optical system in a direction perpendicular to an optical axis, wherein the image shifting optical system includes a first optical member having a first focal length and a second optical member having a second focal length, and wherein a distance between the first optical member and the second optical member along the optical axis is equal to a sum of the first focal length and the second focal length.

An auto focus device comprises a focus panel and a focus controller. The focus panel comprises liquid crystal between a first light-transmissive conductive film and a second light-transmissive conductive film, and the focus controller is configured to apply a voltage between the two light-transmissive conductive films at the position of at least one pixel, so that the liquid crystal at the position will have an expected focal length. An auto focus method comprises: acquiring information on eyesight status of a user; acquiring information on posture of the user; calculating expected focal length of the liquid crystal between the two light-transmissive conductive films at the position of at least one pixel according to the acquired user information; selecting a voltage to be applied between the two light-transmissive conductive films at the position according to the expected focal length; and applying the voltage between the two light-transmissive conductive films at the position.

Embodiments of the present invention provide a 3D display device, and the 3D display device, comprising: a display panel (1), configured to display an image; an optical element (2) and a liquid crystal lens (3), disposed to overlap each other and positioned at a light exiting side of the display panel (1), wherein the optical element (2) comprises a plurality of optical lens units (2a), the liquid crystal lens (3) comprises a plurality of liquid crystal lens units (3a), the plurality of liquid crystal lens units (3a) correspond to the plurality of optical lens units (2a) in a one-to-one corresponding relationship; when the 3D display device is in a 2D displaying mode, each of the plurality of liquid crystal lens units (3a) has an effect on light contrary to an effect on the light of each of the plurality of optical lens units (2a), and when the 3D display device is in a 3D displaying mode, the liquid crystal lens unit (3a) is configured to have a plane glass function. The 3D display device provided by the embodiments of the present invention can be switched between 2D and 3D displaying, and can reduce the crosstalk during 3D displaying and improve the display effect.

Provided are an optical modulation device and a driving method thereof. The optical modulation device includes an active area and a peripheral area disposed around the active area. A plurality of lower electrodes is disposed in the active area. The plurality of lower electrodes extends in a first direction. The plurality of lower electrodes includes a first lower electrode and a second lower electrode. A driver is configured to apply a driving signal to the first lower electrode and the second lower electrode. The driver includes a first channel connected with an upper end of the first lower electrode, a second channel connected with a lower end of the first lower electrode, a third channel connected with an upper end of the second lower electrode, and a fourth channel connected with a lower end of the second lower electrode.

A liquid crystal element is provided that can inhibit occurrence of voltage drop between one end and the other end of each electrode. A liquid crystal element (100) includes a liquid crystal layer LQ, a plurality of first arcuate electrodes (1), and a plurality of second arcuate electrodes (2). The first arcuate electrodes (1) are disposed concentrically about an optical axis (AX) of the liquid crystal element (100) and applies first voltage (V1) to the liquid crystal layer (LQ). The second arcuate electrodes (2) are disposed concentrically about the optical axis (AX) and applies second voltage (V2) to the liquid crystal layer (LQ).