G02B17/002

Micro-optic security device with zones of color

A micro-optic security device with zonal color transitions includes a planar array of focusing elements, an image icon layer including a plurality of retaining structures, the plurality of retaining structures defining isolated volumes at a first depth within the image icon layer, a first zone of image icons, the first zone of image icons having a first predefined subset of the plurality of retaining structures, wherein the isolated volumes of retaining structures of the first predefined subset of the plurality of retaining structures contain cured pigmented material of a first color, and a second zone of image icons, the second zone of image icons including a second predefined subset of the plurality of retaining structures, wherein the isolated volumes of retaining structures of the second predefined subset of the plurality of retaining structures contain cured pigmented material of a second color, wherein the second color contrasts with the first color.

AUGMENTED REALITY DISPLAY DEVICE

An augmented reality display device is used to provide an augmented reality image to one eye of a user. The augmented reality display device includes a curved eyepiece, multiple first micromirrors and two first displays. These first micromirrors are disposed on the curved eyepiece. The two first displays are respectively disposed on two opposite sides of the curved eyepiece. Each first display is for emitting a first image beam. These first micromirrors are for imaging two first image beams emitted by the two first displays onto a retina of the eye to form the augmented reality image. Among them, the horizontal field of view formed by these first micromirrors to the eyes falls within the range of 80 degrees to 110 degrees.

PROJECTION LENS MODULE
20230194964 · 2023-06-22 · ·

A projection lens module includes a lens assembly, a reflector arranged beside the lens assembly, a housing assembly covering the reflector, and a buffer. The reflector includes a reflecting surface and a back surface opposite to each other; the reflecting surface faces the lens assembly to reflect a light beam passing through the lens assembly. The housing assembly includes a flow channel frame, an inner surface. The flow channel frame is arranged on the inner surface and protrudes toward the back surface. The buffer is sandwiched between the flow channel frame and the back surface. A flow channel is formed between the flow channel frame and the back surface and communicates with the air inlet and the air outlet.

Lens mirror array and image forming apparatus using the lens mirror array
11681130 · 2023-06-20 · ·

According to at least one embodiment, a lens mirror array includes a plurality of optical elements. An optical element of the plurality of optical elements includes an incident surface on which light is incident, an emitting surface configured to emit the light incident through the incident surface, at least one reflecting surface reflecting the light incident through the incident surface toward the emitting surface, and a light shielding portion configured to block the light. The incident surface includes an effective surface configured to pass effective light emitted from the emitting surface and a directional surface configured to direct unnecessary light to the light shielding portion.

LIGHT CONTROL PANEL AND OPTICAL IMAGING DEVICE
20170341342 · 2017-11-30 · ·

The present invention provides a light control panel, including a plurality of band-shaped planar light-reflecting portions in each of which layers of a cured product of an allyl ester resin composition, which cured product is excellent in optical characteristics, surface hardness and strength, and metal film layers are alternately laminated in a plane direction (direction vertical to a thickness). The allyl ester resin composition preferably contains an allyl ester oligomer having a group represented by the formula (2) as a terminal group, and having a structure represented by the formula (3) as a structural unit (the symbols in formulae (2) and (3) have the same meanings as those described in the description).

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Spatial image display touch device

A spatial image display touch device includes an imaging element, a display, an optical film and a sensor unit. The imaging element and the display are retained in a housing and inclined to each other. The display generates an image light passing through the imaging element to form a spatial image. The optical film, composed of a plurality of micro-grids arranged in a matrix, is attached on the display. The sensor unit is mounted in the housing to detect an object appearing at the position wherein the spatial image is displayed. By arranging the optical film in front of the display, only the spatial image is visible and the problem of ghost images is avoided.

Optically Variable Security Element

The present invention relates to an optically variable security element for securing valuable articles, having a substrate having opposing first and second main surfaces and, arranged on the first main surface, an optically variable pattern that comprises an embossing pattern and a coating. The coating comprises at least one imprinted line grid and a background layer that contrasts with the line grid. The embossing pattern comprises a two-dimensional grid of elevated and/or depressed embossing elements. Both are combined in such a way that substantially on every embossing element lies at least one line segment of a line in the line grid, and at least one of the parameters position of the line segment on the embossing element, orientation of the line segment on the embossing element and form of the line segment varies location dependently across the dimension of the optically variable pattern. Due to the line grid, a movement effect, especially a pump or rotation effect, is created when the security element is tilted.

Optically variable areal pattern

An optically variable areal pattern has a reflection layer and a micromirror arrangement comprising a plurality of semitransparent micromirrors developed on the reflection layer. The micromirrors are inclined with respect to the reflection layer, such that, by specular reflection, light incident on the micromirror arrangement is reflected on the semitransparent micromirrors. The incident light is reflected partly in a first direction and partly in a second direction that is different from the first direction, in that it passes through the semitransparent micromirrors, impinges on the reflection layer, and is reflected there and, thereafter, again passes through the semitransparent micromirrors.

Display device

According to one embodiment, a display device includes a display, an optical unit, and a reflector. The display includes a first display region emitting a first bundle of rays and a second display region emitting a second bundle of rays. The optical unit includes first and second emission regions transmitting the first and the second bundle of rays. The reflector includes a first reflection region reflecting the first bundle of rays, and a second reflection region reflecting the second bundle of rays. The optical unit forms a first focal point of the first bundle of rays between the optical unit and the reflector, and forms a second focal point of the second bundle of rays between the optical unit and the reflector. A distance between the first emission region and the first reflection region is shorter than a distance between the second emission region and the second reflection region.

Optical element and display apparatus
09791681 · 2017-10-17 · ·

An optical element is configured by connecting a plurality of tiles each constituted by a plurality of reflective optical elements, and is formed in a shape having a plane surface. The tiles configuring the optical element are formed such that outer shapes on the plane surface of the tiles have at least two different triangular shapes, while an end surface of each tile is provided with a light shielding part.