Light emitting diode array integrated with lens, line printer head, and method of manufacturing the light emitting diode array
AssigneeSamsung Electronics Co., Ltd.
InventorsSeok-jin Kang, Hyung Choi, Eung-yeoul Yoon
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Abstract
A lens integrated light emitting diode array, a line printer head using the light emitting diode array, and a method of manufacturing the light emitting diode array. The light emitting diode array includes a plurality of light emitting diodes formed on a surface of a transparent substrate and a plurality of lenses formed on another surface opposite to the surface of the transparent substrate, wherein the plurality of light emitting diodes are divided into a plurality of groups to be arranged to respectively correspond to the plurality of lenses.
Claims27
A light emitting diode array comprising:
- a transparent substrate comprising an incident surface and an exit surface;
- a plurality of light emitting diodes disposed on the incident surface of the transparent substrate;
- and
- a plurality of lenses that are disposed on the exit surface of the transparent substrate to magnify light emitted from the plurality of light emitting diodes to form an image,
- wherein the plurality of light emitting diodes is divided into a plurality of groups, at least two of the plurality of light emitting diodes being arranged in each of the plurality of groups, and the plurality of lenses respectively correspond to the plurality of groups, and
- wherein an interference prevention unit is disposed between the adjacent groups of the plurality of light emitting diodes, the interference prevention unit comprising a groove formed in the incident surface of the transparent substrate.
A light emitting diode array comprising:
- a transparent substrate comprising an incident surface and an exit surface;
- a plurality of light emitting diodes disposed on the incident surface of the transparent substrate;
- and
- a plurality of lenses that are disposed on the exit surface of the transparent substrate to magnify light emitted from the plurality of light emitting diodes to form an image,
- wherein the plurality of light emitting diodes is divided into a plurality of groups, at least two of the plurality of light emitting diodes being arranged in each of the plurality of groups, and the plurality of lenses respectively correspond to the plurality of groups, and
- wherein a surface of the transparent substrate is curved so that the plurality of lenses have refractive power.
A line printer head comprising a light emitting diode array emitting light to a photosensitive body in a main scanning direction, wherein the light emitting diode array comprises:
- a transparent substrate comprising an incident surface and an exit surface;
- a plurality of light emitting diodes disposed on the incident surface of the transparent substrate;
- and
- a plurality of lenses that are disposed on the exit surface of the transparent substrate to magnify light emitted from the plurality of light emitting diodes to form an image,
- wherein the plurality of light emitting diodes is divided into a plurality of groups, at least two of the plurality of light emitting diodes being arranged in each of the plurality of groups, and the plurality of lenses respectively correspond to the plurality of groups, and
- wherein a surface of the transparent substrate is curved so that the plurality of lenses have refractive power.
An electrophotographic image forming apparatus comprising:
- a photosensitive body;
- a line printer head to scan light onto a scanning surface of the photosensitive body to form an electrostatic latent image, the line printer head comprising a light emitting diode array emitting light to the scanning surface of the photosensitive body in a main scanning direction;
- and
- a developing unit to supply toner to the electrostatic latent image formed on the photosensitive body to develop an image,
- wherein the light emitting diode array comprises
- a transparent substrate comprising an incident surface and an exit surface;
- a plurality of light emitting diodes disposed on the incident surface of the transparent substrate;
- and
- a plurality of lenses that are disposed on the exit surface of the transparent substrate to magnify light emitted from the plurality of light emitting diodes to form the image,
- wherein the plurality of light emitting diodes is divided into a plurality of groups, at least two of the plurality of light emitting diodes being arranged in each of the plurality of groups, and the plurality of lenses respectively correspond to the plurality of groups, and
- wherein an interference prevention unit is disposed between the adjacent groups of the plurality of light emitting diodes, the interference prevention unit comprising a groove formed in the incident surface of the transparent substrate.
Dependencies are inferred from the claim text.