Exposure device
First Claim
1. An exposure device comprising:
- a transparent substrate;
rows which are formed on the transparent substrate, the rows including electric field light emitting elements arranged in a main-scanning direction and separated from one another at a predetermined spacing, the rows being arranged in a sub-scanning direction, and the electric field light emitting elements each including a light emitting portion; and
microlenses, each one of which is formed on the transparent substrate so as to correspond to one of the electric field light emitting elements and focuses light emitted from the light emitting portion of the one electric field light emitting element for exposing an object to be exposed, wherein the one microlens has an aperture which is larger than an array pitch of the one corresponding electric field light emitting element, and the electric field light emitting elements are arranged such that a portion corresponding to a gap between portions exposed by the light emitting portions of one of the rows can be exposed by one of the light emitting portions of an adjacent one of the rows.
2 Assignments
0 Petitions
Accused Products
Abstract
The present invention provides an exposure device in which availability of the emitted light is high, optical crosstalk is reduced, and an image can be formed at high resolution. Concave microlenses are formed on one surface of the exposure device facing a photosensitive material, and organic EL elements are formed on the other surface. The organic EL elements are disposed at some of portions at which anode lines and cathode lines intersect each other. A diameter D of an aperture of the microlens is n times an array pitch p of each organic EL element, n lines of the cathode lines are formed, and the organic EL elements arranged on one cathode line are shifted from those on another cathode line in a main-scanning direction by the array pitch p. Accordingly, exposure spots, which are exposed by the organic EL elements incorporated in the n lines of the cathode lines, are offset without overlapping one another, and the entire photosensitive material can be exposed.
33 Citations
18 Claims
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1. An exposure device comprising:
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a transparent substrate;
rows which are formed on the transparent substrate, the rows including electric field light emitting elements arranged in a main-scanning direction and separated from one another at a predetermined spacing, the rows being arranged in a sub-scanning direction, and the electric field light emitting elements each including a light emitting portion; and
microlenses, each one of which is formed on the transparent substrate so as to correspond to one of the electric field light emitting elements and focuses light emitted from the light emitting portion of the one electric field light emitting element for exposing an object to be exposed, wherein the one microlens has an aperture which is larger than an array pitch of the one corresponding electric field light emitting element, and the electric field light emitting elements are arranged such that a portion corresponding to a gap between portions exposed by the light emitting portions of one of the rows can be exposed by one of the light emitting portions of an adjacent one of the rows. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9, 10, 11)
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12. An exposure device comprising:
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a transparent substrate;
rows which are formed on the transparent substrate, the rows including electric field light emitting elements arranged in a main-scanning direction and separated from one another at a predetermined spacing, the rows being arranged in a sub-scanning direction, the electric field light emitting elements each including a light emitting portion, and the electric field light emitting elements being arranged so as to form a plurality of sets, each set including electric field light emitting elements that have mutually different light emitting wavelengths arranged in one of the main-scanning direction and the sub-scanning direction; and
microlenses each one of which is formed on the transparent substrate so as to correspond to one of the sets of electric field light emitting elements, and focuses light emitted from the light emitting portions of the one set for exposing an object to be exposed, wherein the each one of the microlenses has an aperture which is larger than an array pitch of each of the electric field light emitting elements forming the one set of electric field light emitting elements, and the electric field light emitting elements are arranged so that a portion corresponding to a gap between portions exposed by light emitting portions of one light emitting wavelength in one of the rows can be exposed by one of light emitting portions, of the one light emitting wavelength in an adjacent one of the rows. - View Dependent Claims (13, 14, 15, 16, 17, 18)
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Specification