Microfiche reader
First Claim
Patent Images
1. A microfiche reader comprising:
- a microfiche holder including two transparent plates for holding a microfiche therebetween, one of the plates being movable relative to the other of the plates to allow a microfiche to be fitted and withdrawn from between the plates;
means movably supporting the microfiche holder;
a projection surface;
a light support surface;
a light source for emitting a light beam, the light source including a set of light-emitting diodes arranged on the light support surface and with high luminosity to generate the light beam; and
an optical system having a plurality of elements for directing the light beam through a selected field of the microfiche and onto the projection surface to form thereon an illuminated image of said selected field;
wherein the light support surface is shaped so that the light beam is focused onto the elements of the optical system.
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Accused Products
Abstract
Microfiche reader characterized in that it comprises a light source (13) consisting of a high brightness electroluminescent diode assembly (33), arranged on a supporting surface (31) capable of focusing the light flux (14) produced by the diodes onto the element of the optical arrangement of the apparatus.
16 Citations
11 Claims
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1. A microfiche reader comprising:
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a microfiche holder including two transparent plates for holding a microfiche therebetween, one of the plates being movable relative to the other of the plates to allow a microfiche to be fitted and withdrawn from between the plates; means movably supporting the microfiche holder; a projection surface; a light support surface; a light source for emitting a light beam, the light source including a set of light-emitting diodes arranged on the light support surface and with high luminosity to generate the light beam; and an optical system having a plurality of elements for directing the light beam through a selected field of the microfiche and onto the projection surface to form thereon an illuminated image of said selected field; wherein the light support surface is shaped so that the light beam is focused onto the elements of the optical system. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9, 10, 11)
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Specification