CN1231806C - Exposure regulating device and regulating method - Google Patents
Exposure regulating device and regulating method Download PDFInfo
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- CN1231806C CN1231806C CN 03147682 CN03147682A CN1231806C CN 1231806 C CN1231806 C CN 1231806C CN 03147682 CN03147682 CN 03147682 CN 03147682 A CN03147682 A CN 03147682A CN 1231806 C CN1231806 C CN 1231806C
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- photoelectric conversion
- control signal
- conversion component
- focalizer
- adjusting gear
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Abstract
The present invention relates to an exposure adjusting device and an exposure adjusting method, which is applied to an image scanner comprising a focusing device and a photoelectric conversion component. The exposure adjusting device comprises a control device, a drive device and a removable grating piece, wherein the control device sends out a control signal according to the setting of the resolution of the image scanner; the drive device is electrically connected to the control device and generates driving force according to the control signal; the removable grating piece is connected to the drive device and driven by the drive device to change the position so as to adjust the intensity of light entering the focusing device and the photoelectric conversion component. The exposure adjusting device and the exposure adjusting method of the present invention can change exposure degree according to the setting of the resolution or the output voltage value of the photoelectric conversion component.
Description
Technical field
The present invention relates to a kind of exposure adjusting gear and method, finger is applied to exposure adjusting gear and the method in the device of image scanning especially.
Background technology
See also Fig. 1, it is the bare engine module internal structure synoptic diagram of an image scanner, by scanned (not shown) reflected or the light that penetrates out from bare engine module-lenticular lenses 10 enters, see through the focusing of lens combination 11 and expose on the Charged Coupled Device 12 that arrives, and then finish the opto-electronic conversion action.
See also Fig. 2 again, it is the front structural map of above-mentioned lenticular lenses 10, it has light hole structure 101 allows light enter in the bare engine module, and this light hole structure 101 is the dog bone shapes that present the wide central narrow in two ends usually, in order to the more weak phenomenon of compensated scanning line two ends light intensity.But, answer the difference of resolution setting when image scanner, the time shutter that causes every assigned sweep trace, also thereupon not simultaneously, problem just can produce.For instance, in same image scanner, under the setting of resolution 600dpi, every time shutter that sweep trace is assigned, under the setting of resolution 300dpi, every assigned time shutter of sweep trace will have more one times.In other words, under high-resolution scanning is set, the time shutter of Charged Coupled Device 12 is longer, the magnitude of voltage that causes Charged Coupled Device 12 to be exported produces notable difference in two kinds of settings, make the output signal-noise ratio of this photoelectric conversion component that lower phenomenon is arranged under the setting of resolution 300dpi relatively, so will have a strong impact on the scanning quality of image scanner.But if one strengthen the intensity of light source ignorantly, can cause over-exposed on the contrary and make high-resolution image produce distortion phenomenon, shortcoming that therefore need the above-mentioned myriad of well known technology of improvement.
Summary of the invention
The objective of the invention is to overcome the shortcoming of above-mentioned prior art and a kind of exposure adjusting gear and method are provided, can answer the setting of resolution or photoelectric conversion component output voltage values to change depth of exposure.
Purpose of the present invention can realize by following measure:
A kind of exposure adjusting gear, be applied in the device of image scanning, this device of image scanning includes a focalizer and a photoelectric conversion component, and this exposure adjusting gear comprises: a control device, resolution setting that should device of image scanning and send a control signal; One drive unit is electrically connected on this control device, and it should control signal and produces driving force; And a removable slit sheet, being connected to this drive unit, it is subjected to the driving of this drive unit and changes the position, and then adjusts the light intensity that enters this focalizer and this photoelectric conversion component.
This control device is made of a special IC.
This drive unit is an electro-motor, is electrically connected on this control device, and its this electro-motor should control signal and drive this removable slit sheet and produce rotation.
Have a printing opacity hole on this removable slit sheet, it is subjected to the driving of this drive unit and changes the effective light transmission area of this printing opacity hole, and then adjusts the light intensity that enters this focalizer and this photoelectric conversion component.
This control device can device of image scanning high-resolution set and send this control signal, and then the effective light transmission area of this removable slit sheet is diminished; Low resolution that in addition can device of image scanning is set and is sent this control signal, and then makes the effective light transmission area of this removable slit sheet become big.
Purpose of the present invention also can realize by following measure:
A kind of exposure adjusting gear, be applied in the device of image scanning, this device of image scanning includes a focalizer and a photoelectric conversion component, and this exposure adjusting gear comprises: a control device, output voltage values that should photoelectric conversion component and send a control signal; One drive unit is electrically connected on this control device, and it should control signal and produces driving force; And a removable slit sheet, being connected to this drive unit, it is subjected to the driving of this drive unit and changes the position, and then adjusts the light intensity that enters this focalizer and this photoelectric conversion component.
This control device is made of a special IC.
This drive unit is an electro-motor, is electrically connected on this control device, and its this electro-motor should control signal and drive this removable slit sheet and produce rotation.
Have a printing opacity hole on this removable slit sheet, it is subjected to the driving of this drive unit and changes the effective light transmission area of this printing opacity hole, and then adjusts the light intensity that enters this focalizer and this photoelectric conversion component.
This control device can photoelectric conversion component output voltage values send this control signal during less than a setting value, and then make the effective light transmission area of this removable slit sheet become big; Output voltage values that in addition can photoelectric conversion component is during greater than another setting value and send this control signal, and then the effective light transmission area of this removable slit sheet is diminished.
Purpose of the present invention also can realize by following measure:
A kind of exposure adjusting gear, be applied in the device of image scanning, this device of image scanning includes a focalizer and a photoelectric conversion component, and this exposure adjusting gear comprises: a control device, resolution setting that should device of image scanning and send a control signal; And a variable light transmission device, be electrically connected to this control device, have a transmission region on it, the shape of this transmission region is subjected to the control of this control signal and changes, and then adjusts the light intensity that enters this focalizer and this photoelectric conversion component.
This variable light transmission device comprises: a drive unit, be electrically connected on this control device, and it should control signal and produces driving force; And a removable slit sheet, being connected to this drive unit, it is subjected to the driving of this drive unit and changes the position, and then adjusts the light intensity that enters this focalizer and this photoelectric conversion component.
This variable light transmission device is a LCD screen, is electrically connected on this control device, and it should control signal and change the size of its lightproof area and transmission region, and then adjusts the light intensity that enters this focalizer and this photoelectric conversion component.
Purpose of the present invention also can realize by following measure:
A kind of exposure adjusting gear, be applied in the device of image scanning, this device of image scanning includes a focalizer and a photoelectric conversion component, and this exposure adjusting gear comprises: a control device, output voltage values that should device of image scanning and send a control signal; And a variable light transmission device, be electrically connected to this control device, have a transmission region on it, the shape of this transmission region is subjected to the control of this control signal and changes, and then adjusts the light intensity that enters this focalizer and this photoelectric conversion component.
This variable light transmission device comprises: a drive unit, be electrically connected on this control device, and it should control signal and produces driving force; And a removable slit sheet, being connected to this drive unit, it is subjected to the driving of this drive unit and changes the position, and then adjusts the light intensity that enters this focalizer and this photoelectric conversion component.
This variable light transmission device is a LCD screen, is electrically connected on this control device, and it should control signal and change the size of its lightproof area and transmission region, and then adjusts the light intensity that enters this focalizer and this photoelectric conversion component.
Purpose of the present invention also can realize by following measure:
A kind of exposure method of adjustment, be applied in the device of image scanning, this device of image scanning includes a focalizer and a photoelectric conversion component, and this exposure method of adjustment comprises: resolution setting that should device of image scanning and send a control signal; And be subjected to the control of this control signal and adjust the light intensity that enters this focalizer and this photoelectric conversion component.
Purpose of the present invention also can realize by following measure:
A kind of exposure method of adjustment, be applied in the device of image scanning, this device of image scanning includes a focalizer and a photoelectric conversion component, and this exposure method of adjustment comprises: output voltage values that should device of image scanning and send a control signal; And be subjected to the control of this control signal and adjust the light intensity that enters this focalizer and this photoelectric conversion component.
Description of drawings
Fig. 1 is the bare engine module internal structure synoptic diagram of known image scanner;
Fig. 2 is the front structural map of lenticular lenses of the bare engine module inside of Fig. 1;
Fig. 3 is the bare engine module internal structure synoptic diagram with image scanner of exposure adjusting gear of the present invention;
Fig. 4 (a) and Fig. 4 (b) are the structures and action synoptic diagram of removable slit sheet of the present invention;
The structure of Fig. 5 (a) and Fig. 5 (b) another removable slit sheet of the present invention and action synoptic diagram; And
Fig. 6 (a) and Fig. 6 (b) are respectively the organigram of variable light transmission device when different resolution that is made of a LCD screen.
Embodiment
See also Fig. 3, it is bare engine module internal structure synoptic diagram with image scanner of exposure adjusting gear of the present invention, reflected or the light that penetrates out enters from a removable slit sheet 30 of bare engine module by scanned (not shown), see through the focusing of the focalizer that constitutes by lens combination 31 and expose on the photoelectric conversion component that constitutes by Charged Coupled Device 32 that arrive, and then finish opto-electronic conversion and move.And removable slit sheet 30 is connected to the drive unit of a use electro-motor 33, and it is subjected to the driving of this electro-motor 33 and produces rotation, and then adjusts the light intensity that enters this focalizer and this photoelectric conversion component.By a special IC (Application Specific Integrated Circuit; ASIC) control device 34 of Gou Chenging can send control signal because of the resolution setting of this device of image scanning, for instance, in same image scanner, under the setting of resolution 300dpi, the effective light transmission area of this removable slit sheet 30 is with the effective light transmission area that is adjusted to greater than this removable slit sheet 30 under the setting of resolution 600dpi.
Structure about removable slit sheet 30 sees also Fig. 4 (a) and Fig. 4 (b) with the action synoptic diagram, Fig. 4 (a) is the front schematic view of removable slit sheet 30, find out by knowing among the figure, wherein mainly has a printing opacity hole 301, be generally the dog bone shape that presents the wide central narrow in two ends, in order to the more weak phenomenon of compensated scanning line two ends light intensity, reflected or the light that penetrates out passes by scanned (not shown) in order to allow, and then expose on the Charged Coupled Device 32 that arrives through the focusing of lens combination 31 again, and this angle is for Charged Coupled Device 32, has maximum effective light transmission area, therefore can under the setting of resolution 300dpi, use, in the hope of preferable exposure effect.As under the setting of resolution 600dpi, control device 34 can resolution 600dpi setting and send control signal, make electro-motor 33 can allow removable slit sheet 30 rotation and be the angle shown in Fig. 4 (b), thus, the effective light transmission area of this removable slit sheet 30 is with reduced, make that under the setting of two different resolutions, the exposure of Charged Coupled Device 32 still can be kept unanimity, and then avoid the generation of known technology shortcoming.
In addition, this control device 34 changes the effective light transmission area except setting that can resolution, also can use instead and should judge from the output voltage values that this Charged Coupled Device 32 is fed back, when finding that magnitude of voltage that Charged Coupled Device 32 is exported is lower than a setting value, just send this control signal and remove to increase the effective light transmission area of this removable slit sheet 30, otherwise, the magnitude of voltage of being exported when Charged Coupled Device 32 then sends the effective light transmission area that this control signal removes to reduce this removable slit sheet 30 when being higher than another setting value, so the effective light transmission area can be controlled at a proper range.
In addition, removable slit sheet 30 also can be used other kind of mechanism's form instead with electro-motor 33 and finish, action and the structural map shown in Fig. 5 (a) and Fig. 5 (b) for example, it is to be made of 50,51 of the removable slit sheets that two glazed areas vary in size, but can produce the change of glazed area equally in response to the control of control signal, when when only removable slit sheet 50 is inserted in rotation, can obtain bigger glazed area.If removable slit sheet 50 and are inserted in rotation at 51 o'clock simultaneously, will obtain less glazed area.
See also Fig. 6 (a) and Fig. 6 (b) again, it is the organigram with the variable light transmission device of a LCD screen 60 formations, it is electrically connected on this control device, it should control signal and change the size of its lightproof area and transmission region, and then adjusts the light intensity that enters this focalizer and this photoelectric conversion component.Wherein Fig. 6 (a) has shown lightproof area and the transmission region when high resolving power is set, and Fig. 6 (b) has shown lightproof area and transmission region when low resolution is set.
In sum, apparatus of the present invention can answer the setting of resolution or the level of photoelectric conversion component output voltage to change depth of exposure, and then can effectively improve the shortcoming of known technology.
Claims (18)
1, a kind of exposure adjusting gear is applied in the device of image scanning, and this device of image scanning includes a focalizer and a photoelectric conversion component, and this exposure adjusting gear comprises:
One control device, resolution setting that should device of image scanning and send a control signal;
One drive unit is electrically connected on this control device, and it should control signal and produces driving force; And
One removable slit sheet is connected to this drive unit, and it is subjected to the driving of this drive unit and changes the position, and then adjusts the light intensity that enters this focalizer and this photoelectric conversion component.
2, exposure adjusting gear as claimed in claim 1 is characterized in that, this control device is made of a special IC.
3, exposure adjusting gear as claimed in claim 1 is characterized in that, this drive unit is an electro-motor, is electrically connected on this control device, and this electro-motor should control signal and drive this removable slit sheet and produce rotation.
4, exposure adjusting gear as claimed in claim 1, it is characterized in that, have a printing opacity hole on this removable slit sheet, be subjected to the driving of this drive unit and change the effective light transmission area of this printing opacity hole, and then adjust the light intensity that enters this focalizer and this photoelectric conversion component.
5, exposure adjusting gear as claimed in claim 4 is characterized in that, the high-resolution that this control device can device of image scanning is set and sent this control signal, and then the effective light transmission area of this removable slit sheet is diminished; Low resolution that in addition can device of image scanning is set and is sent this control signal, and then makes the effective light transmission area of this removable slit sheet become big.
6, a kind of exposure adjusting gear is applied in the device of image scanning, and this device of image scanning includes a focalizer and a photoelectric conversion component, and this exposure adjusting gear comprises:
One control device, output voltage values that should photoelectric conversion component and send a control signal;
One drive unit is electrically connected on this control device, and it should control signal and produces driving force; And
One removable slit sheet is connected to this drive unit, and it is subjected to the driving of this drive unit and changes the position, and then adjusts the light intensity that enters this focalizer and this photoelectric conversion component.
7, exposure adjusting gear as claimed in claim 6 is characterized in that, this control device is to be made of a special IC.
8, exposure adjusting gear as claimed in claim 6 is characterized in that, this drive unit is an electro-motor, is electrically connected on this control device, and this electro-motor should control signal and drive this removable slit sheet and produce rotation.
9, exposure adjusting gear as claimed in claim 6, it is characterized in that, have a printing opacity hole on this removable slit sheet, it is subjected to the driving of this drive unit and changes the effective light transmission area of this printing opacity hole, and then adjusts the light intensity that enters this focalizer and this photoelectric conversion component.
10, exposure adjusting gear as claimed in claim 9 is characterized in that, sends control signal when the output voltage values that this control device can photoelectric conversion component is lower than a setting value, and then makes the effective light transmission area of this removable slit sheet become big; When output voltage values that in addition can photoelectric conversion component is higher than another setting value and send control signal, and then the effective light transmission area of this removable slit sheet is diminished.
11, a kind of exposure adjusting gear is applied in the device of image scanning, and this device of image scanning includes a focalizer and a photoelectric conversion component, and this exposure adjusting gear comprises:
One control device, resolution setting that should device of image scanning and send a control signal; And
One variable light transmission device is electrically connected to this control device, has a transmission region on it, and the shape of this transmission region is subjected to the control of this control signal and changes the shape of transmission region, and then adjusts the light intensity that enters this focalizer and this photoelectric conversion component.
12, exposure adjusting gear as claimed in claim 11 is characterized in that, this variable light transmission device comprises:
One drive unit is electrically connected on this control device, and it should control signal and produces driving force; And
One removable slit sheet is connected to this drive unit, and it is subjected to the driving of this drive unit and changes the position, and then adjusts the light intensity that enters this focalizer and this photoelectric conversion component.
13, exposure adjusting gear as claimed in claim 11, it is characterized in that, this variable light transmission device is a LCD screen, be electrically connected on this control device, it should control signal and change the size of its lightproof area and transmission region, and then adjusts the light intensity that enters this focalizer and this photoelectric conversion component.
14, a kind of exposure adjusting gear is applied in the device of image scanning, and this device of image scanning includes a focalizer and a photoelectric conversion component, and this exposure adjusting gear comprises:
One control device, output voltage values that should device of image scanning and send a control signal; And
One variable light transmission device is electrically connected to this control device, has a transmission region on it, and the shape of this transmission region is subjected to the control of this control signal and changes the shape of transmission region, and then adjusts the light intensity that enters this focalizer and this photoelectric conversion component.
15, exposure adjusting gear as claimed in claim 14 is characterized in that, this variable light transmission device comprises:
One drive unit is electrically connected on this control device, and it should control signal and produces driving force; And
One removable slit sheet is connected to this drive unit, and it is subjected to the driving of this drive unit and changes the position, and then adjusts the light intensity that enters this focalizer and this photoelectric conversion component.
16, exposure adjusting gear as claimed in claim 14, it is characterized in that, this variable light transmission device is a LCD screen, be electrically connected on this control device, it should control signal and change the size of its lightproof area and transmission region, and then adjusts the light intensity that enters this focalizer and this photoelectric conversion component.
17, a kind of exposure method of adjustment is applied in the device of image scanning, and this device of image scanning includes a focalizer and a photoelectric conversion component, and this exposure method of adjustment comprises:
Resolution setting that should device of image scanning and send a control signal; And
Be subjected to the control of this control signal and adjust the light intensity that enters this focalizer and this photoelectric conversion component.
18, a kind of exposure method of adjustment is applied in the device of image scanning, and this device of image scanning includes a focalizer and a photoelectric conversion component, and this exposure method of adjustment comprises:
Output voltage values that should device of image scanning and send a control signal; And
Be subjected to the control of this control signal and adjust the light intensity that enters this focalizer and this photoelectric conversion component.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 03147682 CN1231806C (en) | 2003-07-16 | 2003-07-16 | Exposure regulating device and regulating method |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 03147682 CN1231806C (en) | 2003-07-16 | 2003-07-16 | Exposure regulating device and regulating method |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN1479155A CN1479155A (en) | 2004-03-03 |
| CN1231806C true CN1231806C (en) | 2005-12-14 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN 03147682 Expired - Fee Related CN1231806C (en) | 2003-07-16 | 2003-07-16 | Exposure regulating device and regulating method |
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| Country | Link |
|---|---|
| CN (1) | CN1231806C (en) |
Families Citing this family (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US8013909B2 (en) * | 2004-12-29 | 2011-09-06 | Nokia Corporation | Method and apparatus for adjusting exposure in digital imaging |
| US8162224B2 (en) * | 2009-07-29 | 2012-04-24 | Symbol Technologies, Inc. | Method of setting amount of exposure for photodetector array in barcode scanner |
| CN109060670B (en) * | 2018-08-08 | 2020-01-21 | 华中科技大学 | Reflection and transmission integrated hyperspectral imaging system and method |
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2003
- 2003-07-16 CN CN 03147682 patent/CN1231806C/en not_active Expired - Fee Related
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| Publication number | Publication date |
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| CN1479155A (en) | 2004-03-03 |
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Granted publication date: 20051214 Termination date: 20110716 |