Abstract:
The present invention relates to an optical system for imaging using a camera and a light source of a handheld device, wherein the optical system comprises a transparent optic defining an optical volume, the transparent optic comprising a first main face adapted for positioning an object to be imaged, the transparent optic adapted to admit into the optical volume a light emitted by the light source for illuminating the object and wherein the transparent optic is adapted to admit the light having interacted with the object into the optical volume and turn the light inside the optical volume such that the light is internally reflected within the optical volume and exit the optical volume to be incident onto the camera.
Abstract:
The present disclosure relates to substrates having laser-induced scattering features located either on the surface of the substrate or within the substrate, along with methods of making such scattering substrates. The disclosed scattering substrates provide improved light extraction properties and may be useful in a variety of applications, such as lighting and electronic displays.
Abstract:
Provided is a reflective article including a first reflecting material and a second retro reflecting material; where sunlight that is photosynthetically active is at least partially reflected by the article and sunlight that is not photosynthetically active is at least partially retro reflected by the article. Also provided is a method for growing a plant, where the method includes placing the reflective article under, around, or in the proximity of the plant.
Abstract:
A diffuser stack may include a first film with a first index of refraction and a second film proximate the first film. The second film may have a second index of refraction that is higher than the first index of refraction. An interface between the first film and the second film may include an array of microlenses of substantially randomized sizes. The microlenses may include sections of features that are substantially spherical, polygonal, conical, etc. The first and second films may be disposed between an array of pixels and a substantially transparent substrate. An anti-reflective layer may be disposed between the first film and the second film.
Abstract:
First and second optical films in a stack each have a structured surface defining extended Fresnel lenses. First and second Fresnel lenses of the respective first and second films extend generally parallel to different first and second in-plane axes respectively. The films may be attached together such that light transmitted by one film is intercepted by the other. The film stack may also include a diffuser disposed to scatter light transmitted by the optical film(s). Other disclosed decorative articles include an individual optical film having a structured surface with transmissive facets arranged in a cyclic slope sequence from substantially zero to a maximum positive slope to substantially zero to a maximum negative slope and back to substantially zero, the sequence repeating over some or all of the structured surface. The slope sequence may define alternating focusing and defocusing Fresnel lenses, and the Fresnel lenses may be extended and linear.
Abstract:
An illuminator includes a body configured to be interconnected to a source of power and having a light source carried thereon. A scattering device associated with the body and in register with the light source includes a light coupler configured for placement adjacent to the light source. The light coupler includes a first region proximal the at least one light source and a second region abutting the first region and defining a boundary therebetween. Light emitted from the light source is scattered as a result of travelling through the first region and the second region.