TW577221B - Method for adjusting a reflector to its optimum position - Google Patents

Abstract

A method for adjusting a reflector to its optimum position is suited for a scanner, wherein a scan module of the scanner applies a scan mode of scanning a document by fixing the lens and the optical sensor and relatively moving the reflectors. The method can adjust each of the reflectors to its optimum position, so that scars or dust on the surface of the reflectors causes interference or block the image light reflected from the document. Hence, the method effectively increases the performance of the scanner.

Description

577221 V. Description of the invention (l) ----- This invention relates to a method for adjusting the position of the reflective lens, and in particular to a method for adjusting the position of the reflective lens to its optimal position, which can adjust the scanning of the scanner. Sight the reflective lens of the module to its optimal position. In recent years, with the dramatic improvement of computer performance and the high development of multimedia technology, in addition to using digital cameras (Digital Cameras, DC) to directly capture analog image light, and correspondingly generate digital image signals' any other relevant The document or picture image input operation requires an optical scanner (Optical Scanner) or other similar image reading device to capture the analog image light on the document or picture and convert it into a digital image signal. This will help users to display, identify (OCR), edit, store and print digital image files on computer equipment or other related electronic products. Please refer to FIG. 1, which is a schematic diagram of a conventional scanner operation. Here, a reflective scanner is taken as an example. The scanner 100 generally has a light transmitting platform 102 and a scanning module 104. The light-transmitting platform 10 is used to carry and locate a document to be scanned 10, and the scanning module 10 is provided with a light source 106, a plurality of reflective lenses 108, a lens 110, and a light. The sensor 112 and the like, in which the light source 106 is used to generate light to illuminate the file 10, so that the file 10 will absorb the irradiated light and correspond to the image light that generates the actual image, and the image light of the actual image of the file 10 The light is sequentially reflected by a plurality of reflection lenses 108 (ie, the reflection lenses 108a, 108b, 108c), and then refracted by the lens 110, and finally is imaged on the light sensor 112, and the light sensor 11 2 sensed. Therefore, the scanning module 104 can capture the actual image of the file 10 through the light source 106, the reflective lens 108, the lens 110, and the light sensor 112.

9475twf.ptd Page 5 577221 V. Description of the invention (2) The scan image corresponding to file 10 is generated. Please refer to FIG. 1 as well. It is worth noting that the operation mode of the sweeping cat module 04 disclosed here is to position the lens 110 and the light sensor 112 inside the scanner 100, and then the light source 106 The reflective lens 108a is divided into a group, and the reflective lens 108b and the reflective lens 108c are divided into a group. Therefore, when the scanning module 100 scans the document 10, the light source 106 and the reflective lens 108a will be moved toward the right side of the drawing at the same time by the mobile device 107a. At this time, the light source 106 will 'Generate light to illuminate file 10, and correspond to the actual image of file 10, with the image light green will be able to pass through the mirror Λ,

The reflection of 108a reaches the next reflection lens 108b. Similarly, the reflective lens 108b and the reflective lens 108b will also move toward the right side of the drawing at the same time, driven by the mobile device 107b, so that the image light from the reflective lens 08a can sequentially pass through the reflective lens 1 The reflections of 〇8b and the reflecting lens 108c, after being refracted by the lens 110, are finally imaged on the light sensor 丨 2 and sensed by the light sensor 112.

Please refer to FIG. 1 as well. Since the focal length of the lens 丨 〇 is a fixed value, when the light source 106 and the reflecting lenses 108 are moved separately, in order to make the image light of the actual image of file 〇 clearly imaged in the light sense The speed of the light source 106 and the reflective lens 108a (that is, the moving speed of the mobile Pei 107a) must be double the speed of the reflective lens 10 ribs and the reflective lens (that is, (Moving rate), such that the image light of the actual image travels to the lens 11. Please refer to the same! Map, but due to production process or storage environment, etc.

577221 V. Description of the invention (3) $ 'will inevitably produce scratches on the surface of these reflective lenses 108a' $ dust. Therefore, when the scanning module 〇 04 uses the above-mentioned operating mode to scan the component 1 There are scratches or dust on the surface of the right reflection lens 108a. As shown in FIG. 2, a scan image 2000 of the file 10 captured by the scanning module 10 will produce a straight line. Directional stripes 2 02. Similarly, if the surface of the reflective lens 108b or the reflective lens 108c has scratches or dust, as shown in FIG. 2, the scanning image 2000 of the document 10 generated by the scanning module 104 will be oblique. Stripe 204. It is worth noting that the reason why the oblique stripe 204 appears to be tilted is due to the scanning module 104's reflective lens 108b (or reflective lens 108a) and image light during the entire scanning process. The relative distance of the starting point changes at any time (gradually shortening). However, in any case, the appearance of the vertical stripes 202 or the diagonal stripes 204 will greatly affect the quality of the scanned image 200 scanned by the scanner 100. In view of this, the purpose of the present invention is to provide a method for adjusting the reflective lens to its optimal position. For the scanning module of the conventional scanner, a fixed lens and the position of the light sensor are directly used and relatively moved. As for the scanning mode of the scanning mirror, the method of the present invention can adjust each reflecting lens of the cat scanning module to its optimal position, so that the scratches or dust on the surface of each reflecting lens are not affected. It will interfere or block the travel of the image light of the intercultural image, so it can effectively improve the quality of the scanned image of the scanner. π π w Based on the above-mentioned object of the present invention, the present invention proposes a method for film to its optimal position, which is suitable for a scanner. The scanner shoots and mirrors a scanning module. / 、 The actual effect of the negative line extension file

9475twf.ptd Page 7 577221 V. Explanation of the invention (4) and corresponding scan image for generating this document, and the scanning module has a light source, which is used to generate light to illuminate the document and correspondingly generate the document. The actual image, and the scanning module further has a light sensor to sense the image light of the actual image of the document, and the scanning module has at least-a mirror =, which is used to convert the actual image from the document The image light is reflected to the light sensor. When the scanning module is scanning the document, the reflective lens can be moved by a device to adjust the position of the reflective lens. From the above, the reflecting lens of the present invention is adjusted to its position; == 2. Fixing the reflecting lens to its relative to the mobile device-2 :: Use the scan module to capture-refer to the chart 2 ~ image only And corresponding to the scan image that generated the reference chart to determine the reference image of the hidden image and the ancient evening & 2 default value m :: whether the number of stripes is greater than-= The number is greater than the set: In addition: if = the device is now at the preset value, then the number of small lenses perpendicular to the number of reflective lenses to another relative to the mobile device-the second line = the tongue adjusts the reflection step until the reference chart sweeps the cat The shadow dtf sequence repeats the above steps in place. , The film to its current article specific to mobile devices-better monthly description of the purpose, features and advantages can be clearly understood, the following: "exemplify the implementation of the example" and cooperate with the accompanying illustrations, such as detailed explanations such as 9475twf.ptd Page 577221 V. Description of the invention (5) 10: Document 3 0 · Reference chart 100 Scanner 102 Light transmission platform 104 Scanning module 106 Light source 108a, 108b, '1 110 Lens 112 Light sensor 200 Scan image 202 Straight Directional stripes 204 Oblique stripes 300 Scanner 302 Light-transmissive platform 304 Cat-scanning module 306 Light source reflection lens Reflective lenses 308a, 308b, 308c 310: Lens 31 2: Light sensor is best implemented. Please refer to Figure 3, This is the operation of the scanner of the present invention. It can be known from the conventional techniques disclosed above that the second aspect of the present invention is a diagram. The scanning mode of the scanner 300 is to use the lens 31 and the light f

c) 475twf.ptd Page 9 577221 V. Description of the invention (6) The sensor 312 is positioned inside the scanner 300, and then the light source 306 and the reflection lens 308a are grouped into one group, and the reflection lens 308b and the reflection lens 308c are divided into One group. Therefore, when the scanning module 300 is scanning the file 10, the light source 306 and the reflective lens 308a will be moved toward the right side of the drawing at the same time by the mobile device 307a. At this time, the light source 306 will generate The light illuminates the file 10, so that the file 10 will absorb the irradiated light and correspondingly generate the actual image of the file 10. The image light will be reflected by the reflection lens 308a and reach the next reflection lens 308b. Similarly, the reflective lens 308b and the reflective lens 308c will be moved toward the right side of the drawing simultaneously by the mobile device 30 7b, so that the image light from the reflective lens 308a can sequentially pass through the reflective lens 308b and the reflective lens. The reflection of 308c is refracted by the lens 310, and finally is imaged on the light sensor 312, and is sensed by the sensor 312. Please also refer to FIG. 3, since the focal length of the lens 310 is a fixed value, when the light source 306 and the reflective lenses 108 are moved separately, in order to make the image light of the actual image of the file 10 clearly imaged on the light sensor 3 j 2, so the moving speed of the light source 30 6 and the reflective lens 308a (ie, the moving speed of the mobile device 307a) must be double that of the reflective lens 3 08b and the reflective lens 3 ^ 8c = the moving speed (ie the mobile device 3 07b (Moving rate), so that the image light travel distance of the actual image of file 10 remains the same. , Brother "υ 之 明 refer to Figures 2 and 3, when the scanning module 3 04 uses the above-mentioned rod transport medium 々ίScan Γ ;; if the reflection lens 3, there are scratches on the surface or brother 2 Figure The scanning image of the document 10 captured by the scanning module 304 is 9475twf.ptd. Page 10 577221. 5. Description of the invention (7) 200 will produce a straight stripe 202. Similarly, if the reflection lens 308b (or reflection The surface of the lens 308c) has scratches or dust. As shown in FIG. 2, the scan image 2 of the file 10 generated by the scanning module 3 0 4 will produce diagonal stripes 2 0 4. It is worth It should be noted that the reason why the scanned image 2000 has oblique stripes 204 has been described in the conventional technology, so it will not be repeated here, and the purpose of the present invention is to improve the above. Please refer to Figs. 3 and 4 at the same time. Among them, Fig. 4 is a flowchart of a preferred embodiment of the present invention. Here is an example of adjusting the reflection lens 3008a to its optimal position as shown in step 402. , First fix the reflective lens 3008a to one of its preset positions relative to the moving device 307b, and then as shown in step 404 The light generated by the light source 3 06 of the sweeping module 3 04 is used to illuminate a reference chart 30, and the reference chart 30 will receive the light from the light source 3 06, and correspondingly generate the reference chart 3 at the same time. For the actual image, the image light will be sequentially reflected by the reflection lens 308a, the reflection lens 30 8b, and the reflection lens 308c, and then refracted by the lens 310. Finally, it will be imaged on the light sensor 31 2 'and the light Sensing by the sensor 3 1 2. Therefore, after going through the entire concealment process, the concealment module 304 can capture the actual image of the reference chart 30 and generate a scan image of the reference chart 30 correspondingly. Figures 3 and 4, and then as shown in step 4 06, a test software or a test circuit can be used to determine whether the number of stripes in the scanned image of reference chart 3 is less than a preset value (for example, (Zero), if the scan of the reference chart 30 = the number of vertical stripes in the image is less than the preset value (or zero) ', it means the image light of the actual image of the reference chart 30

9475twf.ptd Page 11 577221 V. Description of the invention (8) During the entire scanning process, it was not disturbed or blocked by scratches or dust on the surface of the reflective lens 3008, or $ # ^ ^, plus ^ The text of the corpse is too small to be disturbed or blocked, so you can continue to perform step 41o, fixing the reflective lens 30 "to 1 with respect to the current position of the mobile device 307a (that is, the original preset position / ,, so The reflecting lens 308a can be adjusted to its optimal position. It is worthy of note that the reference chart 30 may be a single-color reference chart, such as a white ^ test chart, to improve whether the scanned image has a vertical orientation. Effect of stripes. As mentioned above, if the number of vertical stripes in the scanned image of reference chart 30 is greater than this preset value (or non-zero), it means the actual image of reference chart 30 During the entire scanning process, the image light is indeed disturbed or blocked by scratches or dust on the surface of the reflective lens 308a, or the degree of interference or blocking is too large. Therefore, it is necessary to continue to perform step 408. Perpendicular to reflection In the normal direction of the sheet 308a, adjust the reflecting lens 308a to another position relative to the mobile device 307a, and repeat steps 404 and 406 in sequence until the vertical stripes in the scanned image of reference chart 30 The number is less than the above-mentioned preset value (or zero). Finally, the reflective lens 308a is fixed to its current position (ie, the adjusted position) relative to the mobile device 3073, so the reflective lens 308a is adjusted to its maximum position. Next, 'Please refer to Figures 3 and 4 as well. Here, take the reflection lens 3 08b (or the reflection lens 308c) to its optimal position as an example, as shown in step 402.' First fix the reflection lens 308b. (Or the reflective lens 30.8c / to its preset position with respect to the mobile device 3 0 7 b, and then as described in step 4 04

9475twf.ptd Page 12 577221 V. Description of the invention (9) Do not use the light generated by the light source 3 06 of the sweep module 3 04 to illuminate the reference chart 30, so that the reference chart 3 will receive the light from the light source 3 The irradiation light γ of 〇6 corresponds to the actual image of the reference chart 3 〇, and the image light will be reflected by the reflection lens 30 8a, the reflection lens 308b, and the reflection lens 308c in order, and then refracted by the lens 3 1 〇 Finally, the image is imaged on the light sensor 31 2 and sensed by the light sensor 3 丨 2. Therefore, after going through the entire scanning process, the scanning module 304 can capture the actual image of the reference chart 30 and correspondingly generate the scanned image of the reference chart 30.凊 Similarly refer to Figures 3 and 4, and then as shown in step 406, you can also use / test software or a test circuit to determine whether the number of oblique stripes in the scanned image of reference chart 3 0 is less than one. The preset value (for example, zero). If the number of oblique stripes in the scan image of reference chart 30 is less than the pre-sigh value (or zero), it means that the actual image image light of reference chart 30 is scanned throughout the scan. During the sighting process, it was not disturbed or blocked by scratches or dust on the surface of the reflective lens 30 (or the reflective lens 308c), or was less disturbed or blocked. Therefore, step 410 ′ can be followed to fix the reflective lens 3G8b (or reflective lens mc) to the current position of the mobile device 307b (that is, the original preset position /), and adjust the reflective lens 308b (or the reflective lens 308c) to The best position. As mentioned above, if the number of patterns in the scanned image with reference to Figure 30 is greater than this preset value (or non-zero), it means that the image light of the actual image referred to 30 is the whole During the scanning process, the surface of the deflection lens 308b (or the reflection lens 308c) is recognized ... The traces or dust on the anti-clothing jacket 9475twf.ptd Page 13 ^ 77221 V. Explanation of the invention (10) Interference Or blocking, or ^^ r. 丨 tj 1 then 绛-; r / is too large to interfere or block, so it must be = 08 = 08, first in the direction perpendicular to the reflective lens fiber (or the mirror 308cO Ϊ direction Adjust the reflection lens 30.8b (or another position of the reflection lens 3m and move the device 3m, and repeat step 406 in sequence, until the scan image with reference to Figure 3 has the second ", the number of articles Until it is less than the above preset value (or zero). The most outfit m: i = 3 () 8b. (Or reflective lens 3G8e) to its relative shift ff; in position (ie, adjusted position), so the reflective lens 308b (or reflective lens 308c) is adjusted to its optimal position. Adjustments of the invention The method of reflecting the lens to its optimal position is not limited to the application to the reflective scanner disclosed in the preferred embodiment, and it can also be applied to a ^ transmissive scanner or a hybrid scanner. ^, When the method of the present invention is applied to a scanner with a transmissive scanning function (such as a transmissive scanner or a hybrid scanner of both), the light source of the scanning module will be correspondingly arranged on the document (such as transmissive Manuscript) above to generate light to illuminate the documents below it, where the light source can be a side light source or a linear light source that moves relative to the movement of the reflective lens, and in the transmissive scanning mode, When the light source is a linear light source that moves relative to the movement of the reflective lens, the relative movement between the reflective lens and the light sensor also causes a relative movement between the light source and the light sensor ^. As mentioned above, the method for adjusting the reflective lens to its optimal position of the present invention is applicable to reflective, transmissive, or hybrid scanners. The scanning module of the basin scanner uses a fixed lens and a light sensor. The position of the detector is eight, and several reflective lenses are moved relative to scan the scanning mode of the document at the same time.

9475twf.ptd Page 14 577221 V. Description of the invention (11) After the present invention, 'the product which can effectively prevent each one from interfering with or blocking the document from being hidden from the image can be applied to the scanner's half-scanner Although the present invention has been used to limit the scope of the invention, any and within the scope of the finished product, when the scope of protection can be used as the attached method to adjust the reflective lens to the best position of the surface of the reflective lens The scratches or dust do not travel in the image light, thus effectively improving the sweep quality. It is worth noting that the method of the present invention is an adjustment test of a finished product, a trial production process, or may be designed to build an adjustment function. _-The preferred embodiment is disclosed as above, but it is not intended to be used by those skilled in the art, and it does not depart from the essence of the present invention with a few changes and retouching. Therefore, the scope of the patent for protection of the present invention shall prevail. '577221 The diagram is briefly explained. Figure 1 is a schematic diagram of the operation of a conventional scanner; Figure 2 is a schematic diagram of a scanned image with vertical stripes and diagonal stripes; Figure 3 is a schematic diagram of the operation of the scanner of the present invention; And FIG. 4 is a flowchart of a preferred embodiment of the present invention.

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Claims (1)

577221 6. Scope of patent application 1. A method for adjusting the reflective lens to its optimal position, suitable for a scanner, wherein the scanner has a scanning module for capturing the actual image from a document to be scanned The scan module J that generates the document has a light source for generating light to illuminate the document and generates the actual image of the document with f, and the scan module further has: a light sensor, It is used to sense the shadow light t of the actual image from the file and the scan module has at least one reflective lens 1 to reflect the image light from the actual image of the & to the light sensor: the module is When scanning the file, the gastric reflection lens can be moved by one device; the device = adjusts the position of the reflection lens, and the method of adjusting the reflection lens to its optimal position includes the following steps: fixing the reflection lens to its relative movement One of the devices presets (a) the position;, (b) uses the scanning module to capture the actual of a reference chart and correspondingly generates a scan image of the reference chart; τ ~ (c) judges the scan of the reference chart Conceal image Whether it is greater than-the preset value. If the reference chart image is the same, then continue to perform step 执行, if the reference continues to perform step (e) ·, ㈣4㈣heart value '㈣ (d) is perpendicular to the normal line of the reflective lens Adjust the lens to another position relative to the mobile device, adjust the reflection and step (c) 'until the number of scans of the reference chart is less than the preset value, and then proceed to step ⑷ ,; And " 9475twf.ptd Page 17 577221 VI. Patent Application " '一 ^ 一' (e) Fix the reflective lens to its current position relative to the mobile device. Good position 2. The method of adjusting the reflecting lens to its maximum as described in item 1 of the scope of patent application, wherein the reference chart is a monochrome reference chart. The best way is to adjust the reflecting lens to its maximum value as described in item 1 of the scope of patent application. When the sweep module is capturing the actual image of the document, the starting point of the image light of the document and the reflecting lens The distance between them remains unchanged. Good = The method of adjusting the reflective lens described in item 3 of the scope of the patent application to its most recent A & G method, wherein the reference image has a streak in the scanned image 1 showing a streak. When the reflection lens is adjusted to its maximum as described in item 1 of the patent scope, the manuscript is used when the scanning module is capturing the actual distance between the actual images of the document M = the image light of the interim image The starting point and departure of the reflecting lens u π change at any time. The best position of the S π patent range to adjust the reflecting lens to its most fringe is the second one. The scan image of the reference chart may have q-pin stripes. Best position: = Adjust the reflecting lens to its maximum method as described in item 1 of the patent range, where the preset value is zero. 〇. The best way to claim the best position = Adjust the reflective lens to its maximum g as described in item 1 of the patent scope, where the scanner is a reflective scanner. The best position of the S1 patent range is to adjust the reflective lens to its maximum position. The scanner is a transmissive scanner. 9475twf.ptd Page 18 577221 6. Application for Patent Scope 10 · The method of adjusting the reflective lens to its optimal position as described in item 1 of the scope of patent application, where the scanner is a reflective and perspective hybrid Scanner. 11. The method for adjusting the reflective lens to its optimal position as described in item 1 of the scope of the patent application, wherein when the scanning module is scanning the document, the light source works with the light sensor. Relative movement. 9475twf.ptd Page 19