摘要:
A display system, that includes a light source for providing illumination; a linear array of electromechanical grating devices of at least two individually operable devices receiving the illumination wherein a grating period is oriented at a predetermined angle with respect to an axis of the linear array wherein the angle is large enough to separate diffracted light beams prior to a lens system for projecting light onto a screen; an obstructing element for blocking a discrete number of diffracted light beams from reaching the screen; a scanning element for moving non-obstructed diffracted light beams on the screen; and a controller for providing a data stream to the individually operable devices.
摘要:
A display system, including: a light source providing illumination; a linear array of electromechanical grating devices of at least two individually operable devices receiving the illumination wherein a grating period is oriented at a predetermined angle with respect to an axis of the linear array wherein the angle is large enough to separate diffracted light beams prior to a projection lens system for projecting light onto a screen; a polarization sensitive element that passes diffracted light beams according to their polarization state; a segmented waveplate for altering the polarization state of a discrete number of selected diffracted light beams wherein the segmented waveplate is located between the linear array and the polarization sensitive element, a scanning element for moving the selectively passed diffracted light beams on the screen; and a controller for providing a data stream to the individually operable devices.
摘要:
A method for producing co-planar surface areas is disclosed. At first a first layer with at least one recess is provided. Onto the first layer a second layer is deposited over the entire area of the first layer wherein the second layer has a thickness greater than the depth of the recess. The second layer is composed of material different to the material of the first layer. The next step removes the second layer completely beyond the area of at least one recess. The remaining portion of the second layer is removed until the second layer is coplanar with the first layer.
摘要:
In an optical system including a multi-element grating beam splitter which includes four separate elements and an optical source with an effective aperture for generating a radiation beam to be applied to a data track of an optical storage medium, optics are disposed between the grating beam splitter and the data track of an optical storage medium which defines an optical axis along which light is projected to the data track and causes the displacement of the return beam to cause it to be substantially outside the effective aperture of the optical source to reduce optical feedback into the optical source.
摘要:
In an optical system for generating a radiation beam to be applied to a data track of an optical storage medium is disclosed. The system includes first and second optical light sources producing light at different wavelengths and optics for receiving light from the first and second sources and including a selective beam splitter for selectively applying light from each optical light source to the data track of the optical storage medium and defining an optical axis for each optical light source along which light is projected to the data track.
摘要:
There is disclosed an optical device comprising a support having thereon a transparent amorphous layer of a low molecular weight organic compound, said layer having a glass transition temperature above about 50.degree. C. Also disclosed is a method for making the device including the step of vacuum depositing the organic compound on the support. Particularly preferred devices are integrated optical devices which include a pattern of a second index of refraction or effective index of refraction in the layer, which pattern can define an optical element.
摘要:
An optical system for recording or reading out information from an optical disk is disclosed which includes focus detector and data and tracking detectors. An element is disposed in the optical system and responsive to a beam of light projected off of the optical disk and having a transparent substrate and a waveguide with gratings formed on the top and bottom surfaces. The waveguide-gratings have a predetermined grating period, with the periods being different and selected so that a separate focus error signal beam is projected onto the focus detector, and a separate transmitted beam is provided through the waveguide and substrate and projected onto the data and tracking detectors.
摘要:
A device for achromatic input coupling of an optical beam into a waveguide is disclosed. The device includes a waveguide formed of a material having an effective index of refraction and having first and second surfaces, such waveguide defining a guided mode of propagation. A first grating is provided at the interface at the first surface of the waveguide, such first grating being selected so as to diffract an optical beam at an appropriate angle selected so that the beam is coupled into the guided mode of the waveguide. A second waveguide is provided at the interface at the second surface of the waveguide, such second grating selected so as to diffract a beam to provide an appropriate angle of incidence onto the first grating at the first surface waveguide. An important aspect of the present invention is the use of linear dispersion of the gratings to cancel the linear portion of the sum of the intrinsic waveguide dispersion and the material dispersions of the waveguide and the prism.
摘要:
A dye mixture comprising at least two different unsymmetrical bis[1,2-diphenyl-1,2-ethanedithiolato(2.sup.-)-S,S'] -platinum compounds is disclosed. The mixture is useful in optical recording layers.
摘要:
In an optical system including an optical source with an effective aperture for generating a radiation beam to be applied to a data track of an optical storage medium, including optics disposed between the optical source and the data track of the optical storage medium which defines an optical axis along which light is projected to the data track and displacing the optical axis of the return beam to cause it to be substantially outside the effective aperture of the optical source to reduce feedback into the optical source, and a constructive interference beam splitter disposed between the optics and the optical source for producing a beam of light projected along the optical axis and defraction beams and including at least one coating of transparent material selected of a predetermined thickness to cause an increase in the amount of light projected along the optical axis and a desired defraction beam by decreasing light in the non-desired defraction beams.