摘要:
A compact optical system for imaging an array of light emitters, particularly an individually addressable laser diodes array, onto a recording surface, whereby the image of each emitting region is spread in the cross direction to a width approximately equal to its length dimension. The system consists of a main non-anamorphic imaging lens assembly and a single cylindrical lens disposed between the array and the imaging lens assembly, with its focal line parallel to the array's centerline. There will occur a spread of the short dimension of the imaged emitting regions due to defocusing at the recording surface. Also, the numerical aperture of the emitted beams in the transverse axis is reduced prior to entry into the imaging lens assembly.
摘要:
An assembly of a plurality of optical fibres fixed in a precise linear array, includes a housing formed with an internal cavity having a flat supporting surface; and a first flat sheet extending perpendicularly to the flat supporting surface at one end of the cavity and having a flat edge abutting the flat supporting surface at one side of the cavity. A plurality of the optical fibres are supported in side-by-side relation on the flat supporting surface. A second flat sheet at the opposite side of the cavity presses the optical fibres into contacting relation with each other, and with the end optical fibre in contact with the first flat sheet; and a block in the upper end of the cavity presses all the optical fibres into contact with the flat supporting surface.
摘要:
A compact optical system for imaging an array of light emitters, particularly an individually addressable laser diodes array, onto a recording surface, whereby the image of each emitting region is spread in the cross direction to a width approximately equal to its length dimension. The system consists of a main non-anamorphic imaging lens assembly and a single cylindrical lens disposed between the array and the imaging lens assembly, with its focal line parallel to the array's centerline. There will occur a spread of the short dimension of the imaged emitting regions due to defocusing at the recording surface. Also, the numerical aperture of the emitted beams in the transverse axis is reduced prior to entry into the imaging lens assembly.
摘要:
An internal drum plotter including apparatus for mounting a recording substrate in a generally cylindrical configuration about a longitudinal axis, a multi-beam light source assembly (14) disposed at a first location along the longitudinal axis, and including a plurality of light sources (16) which are separated from each other along an axis (18) perpendicular to the longitudinal axis (12), light directing apparatus operative to direct light received from the multi-beam light source assembly to the recording substrate and apparatus for transmitting light from said multi-beam light source assembly to said light directing apparatus substantially without inaccuracies which are functions of the period of rotation of the light directing apparatus about the longitudinal axis.
摘要:
Printing and printed circuit board members and a method for producing printing member from a member is provided. The printing member includes a topmost protective layer, an IR ablatable layer, a substrate and a wash-off layer. The wash-off layer is washed with a solvent after imagewise ablation of the topmost protective layer so as to expose the substrate, so that the printing member is produced. In one embodiment, the IR ablatable layer is disposed above the topmost protective layer and the wash-off layer is intermediate the topmost protective layer and the substrate
摘要:
Printing and printed circuit board members and a method for producing printing member from a member is provided. The printing member includes a topmost protective layer, an IR ablatable layer, a substrate and a wash-off layer. The wash-off layer is washed with a solvent after imagewise ablation of the topmost protective layer so as to expose the substrate, so that the printing member is produced. In one embodiment, the IR ablatable layer is disposed above the topmost protective layer and the wash-off layer is intermediate the topmost protective layer and the substrate
摘要:
Apparatus for mode coupling in a waveguide that includes an engagement substrate arranged for intimate contact with a waveguide, and at least two actuators coupled to the engagement substrate and operative to create an interference pattern in the engagement substrate for producing a periodic deformation of the waveguide.
摘要:
An internal drum plotter including apparatus for mounting a recording substrate in a generally cylindrical configuration about a longitudinal axis, a multi-beam light source assembly (14) disposed at a first location along the longitudinal axis, and including a plurality of light sources (16) which are separated from each other along an axis (18) perpendicular to the longitudinal axis (12), light directing apparatus operative to direct light received from the multi-beam light source assembly to the recording substrate and apparatus for transmitting light from said multi-beam light source assembly to said light directing apparatus substantially without inaccuracies which are functions of the period of rotation of the light directing apparatus about the longitudinal axis.
摘要:
An assembly of a plurality of optical fibres fixed in a precise linear array, includes a housing formed with an internal cavity having a flat supporting surface; and a first flat sheet extending perpendicularly to the flat supporting surface at one end of the cavity and having a flat edge abutting the flat supporting surface at one side of the cavity. A plurality of the optical fibres are supported in side-by-side relation on the flat supporting surface. A second flat sheet at the opposite side of the cavity presses the optical fibres into contacting relation with each other, and with the end optical fibre in contact with the first flat sheet; and a block in the upper end of the cavity presses all the optical fibres into contact with the flat supporting surface.