CN1180366C - Negative film scanner - Google Patents
Negative film scanner Download PDFInfo
- Publication number
- CN1180366C CN1180366C CNB011109483A CN01110948A CN1180366C CN 1180366 C CN1180366 C CN 1180366C CN B011109483 A CNB011109483 A CN B011109483A CN 01110948 A CN01110948 A CN 01110948A CN 1180366 C CN1180366 C CN 1180366C
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- China
- Prior art keywords
- infrared ray
- cathode tube
- cold
- negative film
- egative film
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- Expired - Fee Related
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Abstract
The present invention provides a negative film scanner which is used for scanning a negative film. The negative film scanner comprises a cold cathode tube, an infrared generating device and an optical sensing device, wherein the cold cathode tube is used for generating visible light for scanning the negative film; the infrared generating device is used for generating infrared rays for scanning the negative film; the optical sensing device is used for receiving the visible light and the infrared rays transmitted from the negative film for generating a corresponding image signal. The infrared rays penetrate through the cold cathode tube to form uniform infrared rays for scanning the negative film.
Description
Technical field
The present invention relates to a kind of negative film scanner, particularly a kind of by the negative film scanner of cold-cathode tube with the infrared ray homogenising.
Technical background
Along with the prosperity day by day of computing machine science and technology, various computing machine peripheral equipments are day crescent benefit also, and negative film scanner is a suitable example.Negative film scanner is to be used for scanning egative film, to obtain corresponding digital image signal.Generally speaking, egative film Chang Yi is stained with and invites dust, or because of wearing and tearing produce scratch, and it is bad to cause scanning the image quality of gained, and therefore, the negative film scanner of higher-order often has the technology of removing the image scratch.
With reference to Fig. 1, Fig. 1 is the synoptic diagram of known negative film scanner 10.Negative film scanner 10 is to be used for scanning an egative film 11.Negative film scanner 10 includes four light emitting diodes (LED) 12a, 12b, 12c, 12d, a frosted glass 14, a diffuser 16, a projection camera lens 18 and an optical sensor 20.Light emitting diode 12a, 12b, 12c can produce ruddiness R, green glow G and blue light B respectively, and light emitting diode 12d then can produce infrared ray IR.When scanning, at first, negative film scanner 10 can scan with the visible light L that diode 12a, 12b, 12c form, the infrared ray IR that forms with diode 12d scans again, so utilize the penetrable egative film 11 of infrared ray IR but can't penetrate the characteristic of dirty and scratch, mode that promptly can the software computing reaches the effect of removing the image scratch.
Yet, owing to need even and parallel infrared light beam during scanning egative film 11, so negative film scanner 10 must be provided with frosted glass 14 and diffuser 16, with with infrared ray IR homogenising and parallelization, but this also causes the mechanism design of negative film scanner 10 comparatively complicated, related raising assembling degree of difficulty, and increase cost.
Summary of the invention
Therefore, fundamental purpose of the present invention is promptly providing a kind of negative film scanner, and it utilizes a cold-cathode tube to finish simultaneously to provide visible light source and with the purpose of infrared ray homogenising, to simplify the internal structure of an organization, addresses the above problem.
For realizing described purpose, the invention provides a kind of negative film scanner, be used for scanning an egative film, this negative film scanner includes: a cold-cathode tube is used for producing a visible light to scan this egative film; One infrared ray generation device is used for producing an infrared ray scanning this egative film, and described cold-cathode tube places between this infrared ray generation device and this egative film guaranteeing ultrared homogenising, and this infrared ray is to pass this cold-cathode tube and arrive this egative film; One optical sensing devices is used for being received from this visible light and this infrared ray that this egative film transmits, to produce corresponding signal of video signal; One projection camera lens is arranged between this egative film and this optical sensing devices, is used for this infrared ray and this visible light that this egative film transmits are projected to this optical sensing devices;
Description of drawings
For further understanding feature of the present invention, advantage now is described with reference to the accompanying drawings.
Fig. 1 is the synoptic diagram of known negative film scanner.
Fig. 2 is the synoptic diagram of negative film scanner of the present invention.
Fig. 3 is the front elevation of Fig. 2 printed circuit board (PCB).
Embodiment
With reference to Fig. 2, Fig. 2 is the synoptic diagram of negative film scanner 30 of the present invention.Negative film scanner 30 is to be used for scanning an egative film 32.Negative film scanner 30 includes a cold-cathode tube 34, it for example is daylight lamp, it is used for producing a visible light L with scanning egative film 32, one infrared ray generation device 36, be used for producing an infrared ray IR with scanning egative film 32, and an optical sensing devices 38, be used for being received from visible light L and the infrared ray IR that egative film 32 transmits, to produce corresponding signal of video signal.Negative film scanner 30 also includes a projection camera lens 40 and is arranged between egative film 32 and the optical sensing devices 38, and the visible light L and the infrared ray IR that are used for passing egative film 32 are projected to optical sensing devices 38.
As shown in Figure 2, infrared ray generation device 36 includes a plurality of light emitting diodes (LED) 36a to produce infrared ray IR, and a plurality of light emitting diode 36a arrange in line and are arranged on the printed circuit board (PCB) 46.Cold-cathode tube 34 is arranged between infrared ray generation device 36 and the egative film 32, and contacts with infrared ray generation device 36.Optical sensing devices 38 is a carrier coupling device (CCD), and it can convert visible light L and the infrared ray IR that includes film image information to corresponding analog image signal.Optical sensing devices 38 is electrically connected on a computing machine 42 in addition, is used for image processing.
Negative film scanner 30 can be carried out rescan, to reach the effect of removing the image scratch.In first time scanning process, negative film scanner 30 can be lighted cold-cathode tube 34, produces visible light L.Visible light L can pass egative film 32 in regular turn, projection camera lens 40 arrives optical sensor 38, produces one first signal of video signal, and this first signal of video signal includes the image that egative film 32 originally included, and scratch or the dirty image that causes.In second time scanning process, negative film scanner 30 can be lighted infrared ray generation device 36, and cold-cathode tube 34 is closed, and only produces infrared ray IR.Infrared ray IR can pass cold-cathode tube 34, and arrive optical sensor 38 through egative film 32 and projection camera lens 40 equally, produce one second signal of video signal, and because the penetrable egative film 32 of infrared ray IR but can't penetrate dirty and scratch, so this second signal of video signal only includes scratch or the dirty image that causes.Thereafter, computing machine 42 can be according to this second scratch that signal of video signal includes or dirty positional information, this first signal of video signal is done image processing, for example this first signal of video signal and this second signal of video signal are done the action of subtracting each other, and obtain a signal of video signal as a result that does not comprise scratch or dirty image, reach the effect of removing the image scratch.
As mentioned above, in the present invention, infrared ray IR passes cold-cathode tube 34 and arrival egative film 32, because the optical design of the outer wall construction shape of cold-cathode tube 34, can be with equalizing light rays, and inwall itself is coated with fluorescent material, and this fluorescent material also has the effect with equalizing light rays, thus the present invention need not as the known negative film scanner 10 with frosted glass 14 with infrared ray IR homogenising.Again, the present invention is to use cold-cathode tube 34 and a plurality of arrangement light emitting diode 36a in line to produce visible light L and infrared ray IR respectively, so need not use diffuser with the pointolite parallelization.
With reference to Fig. 3, Fig. 3 is the front elevation of Fig. 2 printed circuit board (PCB) 46.As shown in Figure 3, a plurality of light emitting diode 36a are arranged on the printed circuit board (PCB) 46, and negative film scanner 30 includes a preheating device 44 in addition and is arranged on the printed circuit board (PCB) 46 and to be positioned at cold-cathode tube 34 other.Preheating device 44 includes two row pre-thermal resistance 44a, 44b and is arranged at the both sides of infrared ray generation device 36, is used for preheating cold-cathode tube 34.
Generally speaking, when lighting again after cold-cathode tube 44 extinguishes, need one period surge time could allow cold-cathode tube 44 reach working temperature to send lightness stabilized visible light L.And in the present invention, when cold-cathode tube 34 extinguished, preheating device 44 can produce heat and come preheating cold-cathode tube 34, made cold-cathode tube 34 can reach working temperature when lighting, with the carrying out of accelerated scan work.Preheating device 44 herein is because the reflective relation of its material (for example scolding tin) meeting, influence the signal that optical sensing devices 38 receives for fear of it, so that signal of video signal is preferable, usually we also consideration can install a reflector (not shown) again additional, to cover reflective that preheating device 44 is produced, this is for optionally installing.
With known negative film scanner 10 relatively, the present invention be by cold-cathode tube 34 reach simultaneously provide visible light source with infrared ray homogenising binomial purpose, and need not use extra light homogenizer.Therefore negative film scanner 30 of the present invention have simple structure, little, the advantage such as assembling is easy, with low cost that takes up space, can reach the effect of removing the image scratch.
The above only is preferred embodiment of the present invention, and all equivalent variations and modifications of being done according to claim scope of the present invention all should belong to the covering scope of claim of the present invention.
Claims (8)
1. a negative film scanner is used for scanning an egative film, and this negative film scanner includes:
One cold-cathode tube is used for producing a visible light to scan this egative film;
One infrared ray generation device is used for producing an infrared ray scanning this egative film, and described cold-cathode tube places between this infrared ray generation device and this egative film guaranteeing ultrared homogenising, and this infrared ray is to pass this cold-cathode tube and arrive this egative film;
One optical sensing devices is used for being received from this visible light and this infrared ray that this egative film transmits, to produce corresponding signal of video signal;
One projection camera lens is arranged between this egative film and this optical sensing devices, is used for this infrared ray and this visible light that this egative film transmits are projected to this optical sensing devices.
2. negative film scanner as claimed in claim 1, wherein this optical sensing devices is to be electrically connected on a computing machine, when this cold-cathode tube is opened, this visible light can penetrate this egative film and arrive this optical sensing devices, to form one first signal of video signal, and close and this infrared ray generation device when opening when this cold-cathode tube, this infrared ray can pass this cold-cathode tube, this egative film and arrive this optical sensing devices, to form one second signal of video signal, this first signal of video signal and this second signal of video signal are done plus-minus handle and can obtain a signal of video signal as a result, this computing machine then can be done image processing to first signal of video signal according to second signal of video signal.
3. negative film scanner as claimed in claim 1, wherein this cold-cathode tube has the egative film of deviating from face, and this infrared ray generation device is to be arranged at this to deviate from the egative film face, makes this infrared ray must penetrate this cold-cathode tube, could straightaway arrive at this egative film.
4. negative film scanner as claimed in claim 3, wherein this cold-cathode tube is to contact with this infrared ray generation device.
5. negative film scanner as claimed in claim 1, wherein this infrared ray generation device includes a plurality of arrangements light emitting diode (LED) in line in order to produce this infrared ray.
6. negative film scanner as claimed in claim 1, it also includes a printed circuit board (PCB), and this infrared ray generation device then is arranged on this printed circuit board (PCB).
7. negative film scanner as claimed in claim 1, it also includes a preheating device, and to be arranged at this cold-cathode tube other, is used for this cold-cathode tube of preheating.
8. negative film scanner as claimed in claim 7, wherein this preheating device includes the both sides that a plurality of pre-thermal resistances are arranged at this infrared ray generation device.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNB011109483A CN1180366C (en) | 2001-03-07 | 2001-03-07 | Negative film scanner |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNB011109483A CN1180366C (en) | 2001-03-07 | 2001-03-07 | Negative film scanner |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN1373447A CN1373447A (en) | 2002-10-09 |
| CN1180366C true CN1180366C (en) | 2004-12-15 |
Family
ID=4658854
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CNB011109483A Expired - Fee Related CN1180366C (en) | 2001-03-07 | 2001-03-07 | Negative film scanner |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN1180366C (en) |
Families Citing this family (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN100351667C (en) * | 2002-10-22 | 2007-11-28 | 宇东科技股份有限公司 | Compensating light source capable of compensating light attenuation caused by light path and its design method |
| CN1333571C (en) * | 2003-09-26 | 2007-08-22 | 明基电通股份有限公司 | Device of automatic identifying negative, method thereof and memory medium of its computer program |
| CN1305293C (en) * | 2003-10-15 | 2007-03-14 | 明基电通股份有限公司 | Scanner |
-
2001
- 2001-03-07 CN CNB011109483A patent/CN1180366C/en not_active Expired - Fee Related
Also Published As
| Publication number | Publication date |
|---|---|
| CN1373447A (en) | 2002-10-09 |
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| C10 | Entry into substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| C06 | Publication | ||
| PB01 | Publication | ||
| C10 | Entry into substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| C17 | Cessation of patent right | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20041215 Termination date: 20100307 |