A security device includes an array of lenses and a plurality of first and second segments disposed under the array of lenses. At a first viewing angle, the array of lenses presents a first image for viewing without presenting the second image for viewing, and at a second viewing angle different from the first viewing angle, the array of lenses presents for viewing the second image without presenting the first image for viewing. At least one first or second segment can include one or more microstructures or one or more nanostructures configured to produce one or more colors for the first or second image.

The invention of the current application is directed to a 3-dimensional viewing device with stereoscopic affect including a main linear body including at least one inner lining layer, and a mirror assembly. The at least one inner lining is positioned within the main linear body and the mirror assembly is positioned inside the main linear body where the perimeter of the mirror assembly is surrounded by the at least one inner lining. The mirror assembly includes at least two mirrors. The 3-dimensional viewing device with stereoscopic affect also includes an image holder assembly including a gear assembly, and an endcap including a viewing hole. The endcap is attached to a first end of the main linear body and the second end of the main linear body at least partially inserts into an opening in the image holder assembly.

A 3-dimensional object may contain tunnels passing through the object so that when the object rotates, if the object is viewed from a certain angle, the tunnel is only visible for the moment that the tunnel is pointed directly at the viewer's eye. This system of tunnels can be used to create an animated system of dots when the shape rotates, and the dots can be positioned so that they create the animated illusion of dots moving along the surface of the shape in the opposite of the true direction of rotation.

A 3-dimensional object may contain tunnels passing through the object so that when the object rotates, if the object is viewed from a certain angle, the tunnel is only visible for the moment that the tunnel is pointed directly at the viewer's eye. This system of tunnels can be used to create an animated system of dots when the shape rotates, and the dots can be positioned so that they create the animated illusion of dots moving along the surface of the shape in the opposite of the true direction of rotation.

The invention provides a device and method for calibrating a lens distortion center. The device includes a rotating frame, a first driving mechanism and a second driving mechanism. The first driving mechanism is connected with the rotating frame for driving the rotating frame to rotate. A calibration plate is arranged in the rotating frame and connected with the rotating frame through a rotating shaft. The second driving mechanism is connected with the calibration plate for driving the calibration plate to rotate relative to the rotating frame, and a lens placement platform is provided at a front end of the calibration plate. The device of the invention can adjust the relative position between the calibration plate and the lens through the cooperation of the first driving mechanism with the second driving mechanism, so that a lens can acquire different images to achieve calibration of lens distortion.

An optical device includes an array of lenses and a plurality of segments disposed under the array of lenses. The plurality of segments corresponds to a plurality of images. Upon tilting the device at different viewing angle, the array of lenses presents images sequentially. In some examples, individual ones of the segments can comprise specular reflecting, transparent, diffusely reflecting, and/or diffusely transmissive features. In some examples, individual ones of the segments can comprise transparent and non-transparent regions. The images can produce one or more optical effects.

The present invention provides a photo-substrate for printing of lenticular images that comprises a lenticular lens array, and an energy-reactive material adhered to the backside of the lenticular lens array. According to the methods of the present invention, the lenticular image is printed directly through the lenticular lens array onto the energy-reactive material, using, for example, collimated light or laser. The photo-substrate of the present invention can be adapted for large scale or industrial production to print lenticular images on a wide array of substrates, including such things as packaging and clothing.

The present invention provides a photo-substrate for printing of lenticular images that comprises a lenticular lens array, and an energy-reactive material adhered to the backside of the lenticular lens array. According to the methods of the present invention, the lenticular image is printed directly through the lenticular lens array onto the energy-reactive material, using, for example, collimated light or laser. The photo-substrate of the present invention can be adapted for large scale or industrial production to print lenticular images on a wide array of substrates, including such things as packaging and clothing.

A number of illustrative variations may include a method of relative localization via the use of simultaneous location and mapping gear sets.

A number of illustrative variations may include a method of relative localization via the use of simultaneous location and mapping gear sets.