摘要:
Described herein are devices, compositions, and methods for improving color discernment. In particular, devices and methods for correcting color blindness comprising a hologram that enhances the ability to distinguish a desired first bandwidth by decreasing the transmission of a second bandwidth. Advantageously, the device appears not tinted to outside observer.
摘要:
The present disclosure relates to devices and methods configured to perform drug screening on cells. At least one embodiment relates to a lens-free device for performing drug screening on cells. The lens-free device includes a substrate having a surface. The lens-free device also includes a light source positioned to illuminate the cells, when present, on the substrate surface with a light wave. The lens-free device further includes a sensor positioned to detect an optical signal caused by illuminating the cells. The substrate surface includes a microelectrode array for sensing an electrophysiological signal from the cells.
摘要:
A digital holographic apparatus, system, and method are disclosed. The apparatus includes an electronic display device comprising an interferometric spatial light modulator based display engine and a processor coupled to the electronic display device. The processor is operative to upload digital content to the electronic display device. The digital content is displayed on the electronic display device and is recorded into a holographic medium when the holographic medium and the electronic display device are flood exposed by a laser generated light beam. The system additionally includes at least one laser coupled optically coupled to the electronic display device and communicatively coupled to the processor. A method of recording a digital hologram in a holographic medium using the digital holographic system also is disclosed.
摘要:
A substrate includes a diffracting structure providing a hologram which encodes one or more holographic images. Every image of the one or more holographic images has a holographic location at either a finite or substantially infinite effective optical distance. The hologram is to be used as an ophthalmic eye chart or an eye exercise device or to provide a scale for measuring distances.
摘要:
Disclosed is a surface relief structure. The structure includes a recording medium configured to be structurally modified when exposed to interfering and non-interfering portions of radiation beams, the structurally modified recording medium including, when viewed in a two-dimensional cross-section along one of the axes of the recording medium a plurality of equally spaced steps of fine-sized periodicity superimposed upon a plurality of deep depressions of substantially coarse-sized periodicity. The structurally modified recording medium is configured to produce in reflection single and multiple colors in a broad spectral range when illuminated by a source of light.
摘要:
A holographic apparatus includes a mask for modulating a signal beam to generate a modulated signal beam; a conical prism, which has a cone portion and a base portion, for refracting a reference beam to generate a refracted reference beam, wherein the refracted reference beam interferes with the modulated signal beam in a holographic medium to thereby record data thereon, the base portion facing the holographic medium. The holographic apparatus can be miniaturized by a positional relationship between the conical prism and the holographic medium.
摘要:
Bei der Masterkopieherstellung(1) mittels Schablonen(2) mit unterschiedlichen Aufnahmegeometrien(3,4,5,6) werden im gewünschten Beobachtungsbereich(7) die Motive der Schablonen(2) in großen Entfernungen(7) in den gewünschten Spektralfarben sichtbar, wenn der Brennpunkt(6) der Referenzoptik(9) im Beobachter-Augenpunkt(7) liegt und der Brennpunkt(5) der Masteroptik(10) im Leuchtmittelpunkt der Weißlichtlampe liegt.