专利摘要:
The invention relates to light receiving devices for point and progressive optoelectronic reading of transparent and opaque mouths of the glands with a light beam and improves the quality and speed of the device, as well as reading color originals and originals mounted on a cylindrical original holder. The light-receiving device for reading opaque originals contains a hollow body 3 with an opening 4 for supplying the light beam 2 to the scanned area of the original 1 and an opening 5 for entering the read light flux 6 to the light-receiving surface 7, which is formed by the ends 8 of the light-conducting fibers 9. Light guide The fibers 9 are arranged so that the normals to the surface of the ends 8 are oriented in the direction coinciding with the direction of the read luminous flux 6. For reading the transparent originals, the originals contain Spruce 13 is made transparent, and the hollow body 3 has only an opening 5 or an opening 4, which is covered by means impermeable to light. In order to read color originals, the optical bundle 11, into which the optical fibers 9 are connected, is divided by ends of 10 at least into three independent optical bundles. Filters are located between the end surfaces of the optical harnesses and optoelectronic converters 12. 4 hp f-ly, 5il. i (L bo O OO O 4 OO cm fut f
公开号:SU1303048A3
申请号:SU823433798
申请日:1982-05-07
公开日:1987-04-07
发明作者:Юргенсен Хайнрих
申请人:Др.-Инж.Рудольф.Хелль Гмбх (Фирма);
IPC主号:
专利说明:

The invention relates to electronic reproduction technology, in particular, to facsimile technology, and specifically to light-receiving devices for point and line-by-line optoelectronic reading of transparent and opaque originals by a light beam.
The purpose of the invention is to improve the quality and speed of the light-receiving device, read originals mounted on a cylindrical platen as well as read color originals.
FIG. 1 shows a light-receiving device for reading the surface of a hollow ball on a tube. Countless originals, mounted on a cylindrical originator; Fig. 2 is the same for reading opaque originals, section; Fig. 3 is the same for reading transparent originals mounted on a cylindrical original j in Fig. 4 - the same for reading color originals; Fig. 5 shows the proposed device, axonometric,
The light-receiving device for point and line optoelectronic reading of the opaque original 1 by the light beam 2 comprises a hollow body 3 with an opening 4 for supplying the light-beam 2 to the scanned area of the original 1 and with an opening 5 for the readable light flux 6 to the light-receiving surface 7, formed by the ends of light-conducting fibers 9. The light-conducting fibers 9 are arranged so that the normals to the surfaces of the faces 8 are oriented in the direction coinciding with the direction of the read luminous flux 6 The other ends 10 of the light conducting fibers 9 are combined into a common optical bundle 11 and connected to at least one optoelectronic converter 12,
The device works as follows.
The opaque original 1 is mounted on a cylindrical original plate 13, which is driven by the motor 14. A source of 15 light, such as a laser generator, to create a light beam 2
and the body 3 moves synchronously in
the direction of the arrow 1 6 axially along the cylindrical originator 13. The light beam 2, the passage through the holes 4 and 5, falls on the scanned
the area of the original 1, and then, reflecting from the scanned area as a readable light flux 6, passes through the opening 5 to the light-receiving surface 7 of the hollow body 3. With the help of the lens 7, the light beam 2 is focused at the scanning point 18 on the opaque original 1 , the originator 13 and the hollow body 3 of the light-receiving device are positioned relative to each other so that the scanning point 18 is the center of the light-receiving surface 7, made in the form of an internal
The luminous flux 6, modulated according to the image of the instantaneous scanning point 18 of the original 1, which due to scratches or glued mounting may have an asymmetrical intensity distribution, reflects diffusely from the original 1 into the light-receiving device. The light-receiving surface 7 of the light-receiving device collects the readable light stream 6 at a large spatial angle (the angle at which the Light-receiving device perceives light) and overeat it through
optical fibers 9 to an optoelectronic converter 12, which forms the image signal on line 19.
In the case of scanning the transparent original 20, the cylindrical original holder 13 is made transparent, and the Light-receiving device contains only an opening 5 facing the readable light flux 6 at a spatial angle. The light beam 2 is fed to the transparent original 20, where it is modulated in accordance with the image of point 18 scan. The read luminous flux 6 passes through the transparent originator 13 and through the opening 5 enters the light-receiving device ,, the read luminous flux b then through the light-conducting fibers 9 enters the optoelectric converter 12,
Q
The proposed Light Receiver for selectively scanning opaque 1 and transparent 20 originals may preferably be rotatable, so that, depending on the type of the original, it is higher or lower than the original holder 13, and the opening 4 in the case of reading transparent originals 20 is blocked by means impermeable to Sveta,, .
For the purpose of reading color originals, optical cable 11 is divided into at least three independent optical cables 21-23, with the end surfaces 24-26 of optical cables 21-23 through dycroic (O filters 27-29 connected to optoelec - tron converters 12, which derive three colorimetric values of signals C, D and E on lines 30-32.f5
The proposed invention can also be applied when using flat document holders.
权利要求:
Claims (5)
[1]
1. A light receiving device for point and progressive optoelectronic reading of a transparent and opaque originals with a light beam containing a hollow body with an aperture oriented to a readable light flux at a spatial angle and with an internal light receiving surface that differs from In order to improve the quality and speed of the device 30, the light-receiving surface is formed by the ends of the light-conducting fibers, and the normals to the surfaces of these ends are oriented in the direction, with coincides with the direction of flow of the reading, and the other ends of the light-conducting fibers are connected to a common optical harness and connected to at least one opto-electronic converter 40.
[2]
2. The device according to Claim 1, containing a hollow body with an internal light-receiving surface and openings, one of which faces the spatial angle readable by the luminous flux, and the other serves for. supplying the light beam to the scanned areas of the original, which is due to the fact that, in order to increase the quality and speed of the device, the light-receiving surface is formed by the ends of the light-conducting fibers, and the normals to the surfaces of these ends are oriented in the direction coinciding with the direction of the readout flow, and The other ends of the light-conducting fibers are connected to a common optical bundle and connected to at least one opto-electronic converter.
[3]
3. The device according to paragraphs. 1 and 2, that is, in order to read originals mounted on a cylindrical original holder, the light-receiving surface is made in the form of the inner surface of a hollow ball.
[4]
4. The device according to claim 2, wherein the purpose is to read transparent originals, the opening for the entry of the light beam is provided with means impermeable to light.
[5]
5. Device on PP. 1-3, characterized in that, in order to read color originals, the common optical bundle is divided into at least three independent optical bundles, each of which is connected to a respective optical optic converter, between the end surfaces of the optical bundles and optoelectronic converters are arranged for dicroic filters.
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FIG. five
类似技术:
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同族专利:
公开号 | 公开日
CA1188788A|1985-06-11|
JPS57194663A|1982-11-30|
FI821615A0|1982-05-07|
DK200882A|1982-11-10|
DE3118458A1|1982-11-25|
AU8351882A|1982-11-18|
EP0065242A1|1982-11-24|
US4473848A|1984-09-25|
EP0065242B1|1984-03-28|
FI821615L|1982-11-10|
AT6895T|1984-04-15|
DE3118458C2|1984-11-22|
JPH0351151B2|1991-08-05|
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法律状态:
优先权:
申请号 | 申请日 | 专利标题
DE3118458A|DE3118458C2|1981-05-09|1981-05-09|Light receiving device|
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