TW554623B - Optical scanner apparatus with an optical well imaging device - Google Patents

Abstract

An imaging device for an optical scanning module of an optical scanner apparatus is disclosed. By use of an optical well imaging device to replace the conventional micro-lens imaging device to receive the straight imaged light, which is generated from the scanning object is illuminated by illuminant. Moreover, the height of the non-inducted region on the optical sensor is higher enough to block the interfered light that is formed by other beam of the imaged light such that the optical sensor can receive the part of the beam of the straight light and will not be interfered. Therefore, by use of the optical well imaging device, the light dispersion effect can be improved and the imaging data can be completely focused on the optical sensor to obtain an optimum resolution and the best MTF (modulation transfer function).

Description

554623

The present invention relates to an optical scanning device, and more particularly to an imaging system in an optical scanning module to prevent light dispersion effect and obtain the best modulation (MTF 'modulation transfer function). 5-2 Scanner device (flatbed scanner) like the background of the invention is well known to the public, this platform scan; to produce a mechanically readable image data 'This image data represents two I pieces of image data. Generally used in scanners, image data systems: scan scan and use a personal computer to generate the scanned image ^ display device, where the display device can be a cathode ray tube-like in a cathode ray tube) Or a printer. -From:; style !: ί Γί f SCanner) Extensive and computer systems • (, * printed data can be converted to = 1. Optics: The tracing module is the most important two of the platform scanners: g ?: Body: Yes, in this system, in order to receive the light source identified by the scanned text #, in addition, it also contains-light sensor (〇PtiCal sensor), for example

554623 V. Description of the invention (2) For example, the charge _ combined attack 1 is located on the inside of the housing, and C a: ge COUPle “eviCe), the image signal corresponding to this light, in addition; the light source transmitted by the piece is converted into Device (lens), this lens: d: also contains a plurality of lenses. Set the focus of the transmitted light source on the light sensor and light S = =; the illumination system (⑴――) ^ JSV # ^ ^ ( sc: n \ J ^ ^ ^ ζ The set of images that are irradiated to the scanning area /, especially dry, first focus 1 image to a position, also known as the scan line ($): On the surface of Tian Yi's light sensor. The entire object is obtained by crossing the entire object for the Lit line, usually the phase number. The illumination system and optical system obtain the image data of the object here. The illumination system includes a light source (such as fluorescent Lights (fluorescent) or., And (incandescent) or light emitting diodes (LED, diode). The optical system includes a lens and / or a mirror surface with a soil ", which illuminates the image of the scan line to the detector Above the surface. On the other hand, one, one contact image sensor (CIS) It can be used for focusing and illuminating the light source above the detector by illuminating the scanning area. However, the lens depth of the contact image sensor is only about 0.3 mm. Since the lens depth of the device is very difficult to determine the process error = type image sensor ι. Even small quality.., Inflammation will affect the entire optical image pattern. No. 102 series light source illuminates the scanning object 2: 丄 Reference mark ^ ^ ^ ^ m Reflected light source generated after drying iUU; Samura is a traditional lens imaging device 4; and reference number ι〇6 is light ^ ° in the traditional In the optical scanning module, the light-dried image pattern is focused on the light sensor 106 according to the imaging principle. The reflected light source 102 is transmitted from the scanning object 100 to the lens imaging device 104, and then the optical image signal is transmitted. It is transmitted to the light sensor 106. Then, the optical image signal is converted into a digital signal, and the light image pattern is output by an output device such as a screen or a printer. According to a first reflected light source in FIG Α 1〇2 transmitted via the lens 104 to the image forming apparatus response distribution pattern (response distribution curve diagram) 200 generated by the light sensor 106. In this answer

In the curve distribution pattern 2000, the two end points 2202A and 2 2B of the generated response curve are lower than the light source point 102C (linear light source) and others due to the light dispersion effect. The response curve generated by the light source points (not shown in the first B diagram) between the two light source points ι02A and 102B. Moreover, due to the light dispersion effect, the resolution of the image data generated at the two ends 202A and 202B is poor, resulting in poor resolution of the entire image data.

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Because the lens imaging and image pattern cannot completely disperse the light dispersion effect, the optical light source m is swept above the optical sensor 106 by scanning V ?. In addition, the tuned piece 100 obtained after scanning is transmitted to the light sensor 106 so that the resolution of the image pattern is obtained. The shift function is poor and better optics cannot be obtained. 3 Purpose and summary of the invention: Another objective of the present invention is to replace the dispersion effect of a lens. The purpose is to improve the light generated when scanning an object. Another purpose of the present invention is to improve the modulation transfer function (, modu | atlon transfer functión) to obtain the best resolution). In addition, according to the above-mentioned object, the present invention provides an imaging device instead of the conventional optical scanning device using a lens device as the imaging device. In the present invention, an optical well imaging device (optical weii imaging device) is used in place of a lens imaging device for transmitting the scanned object by irradiation 554623 V. Description of the invention (5) " —- I ^ ί Onto the light sensor. Here, the # and π devices have a plurality of optical gates and are located on a non-inducted region. Most of the devices are used to prevent the optical image pattern material from being formed, and then become dry.一 Part of a source, so that the light sensor can only receive linear images from the front =. Therefore, the shirt-like light source can be completely transmitted to the light sensor to change the cover to effect, and the best resolution can be obtained. 0 色 政 5-4 Invention Details:

Some embodiments of the present invention will be described in detail as follows. However, in addition to the detailed description, the invention can also be widely implemented in other embodiments, and the scope of the invention is not limited, which is subject to the scope of subsequent patents. Reference to the second figure is a block diagram of an optical scanner device (bloc ^ a + granO. In this block diagram, the optical scanning device 41 irradiates a scan field object with a light source 2 (not shown here). Then, The image light source 2 generated after irradiating the scanned object is transmitted to an imaging device 3, such as an optical well imaging device (

optical well imaging device), this optical well imaging device is used to replace the traditional lens imaging device (lens— 丨 ㈣ 丨 called device), so that the auxiliary light sensor 4 can only receive the light sensor 4 in front of the light sensor 4 Linear image light source to reduce interference caused by other light beams. Therefore, it is possible to improve the light dispersion effect and obtain an optimal modulation transfer function (MTF, m〇dulat i〇n

554623 V. Description of the invention (6) transfer function) 〇 Then, the image data is transferred to the analog-digital conversion system (ADC, -analog-digital convert system) 5 to convert the image data into digital signals. Then, the digital signal is transmitted to an ASIC ′ application specific integrated circuit 6, and different chip sets in the special-purpose integrated circuit 5 are used to process functions required by the user. When the capacity of the entire image data cannot be processed at one time, part of the data will be temporarily stored in a buffer memory (buffer) or called temporary storage memory (ram, random access memory) 8. When this data is needed At that time, it is read from the temporary memory 8 via the special-purpose integrated circuit _ 6 and then transmitted. In addition, when the signal needs to undergo a calibration step, the signal can be sent to a calibration database 7 for calibration to obtain a calibrated signal. Then pass the corrected signal through the interface (i n t e r f a c e) 9, such as parallel port (parallel port), universal sequence bus (

Universal Serial Bus), small computer system interface (SCSI,

Small Computer System Interface) or current transmission protocols using infrared transmission or the like to transmit image data or signals to the host 10 of the personal computer, and then transmit the signals to the Lu output device 11 via the host 10 of the personal computer, such as A monitor, printer, or PDA 'personal digital assistant' to display the image data of the scanned object. In this block diagram, except for the optical well imaging device 3, light sensor 4, analog-digital conversion system 5, and special-purpose integrated products

Page 10 554623 V. Description of the invention (7) The rest of the objects other than the circuit 6 can be referred to as the environment (articU). The optical scanning device 1 uses these environments to increase the functions of the optical scanning device ^ and improve the analysis of the objects scanned by the optical scanning device And output image quality. • Next, consider the third picture, which shows an imaged light 22 such as a reflected light source (renected Hght) or a transparent light source (transparent light) transmitted from the scanned object 20 to the imaging device 28 and light sensing The light sensor 30 may be a contact image sensor (CIS) or a charge coupled device (CCD). In an embodiment of the present invention, an optical well imaging device 28 having a plurality of optical gats 26 is provided, and each optical well 28 corresponds to each of the optical sensors 30 on the optical sensor 30. One pixel replaces the traditional micro-lens as an imaging device to receive image data. In the preferred embodiment of the present invention, the plurality of shutters 26 have a height and the shutter 26 is located on a non-inducted region 2 4 of the light sensor 30 to block other image light sources from interfering. The linear light source 22 that enters the light sensor from the front of the light sensor 3. The height of most of the shutters needs to be high enough to block other interference image light sources 2 2. And smaller than the size of each pixel corresponding to the light sensor 30. According to the above description, it can be known that using the optical well 28 as an imaging device can receive a straight image light source 22, and the light sensor 30 Non-inductive

554623

5. Description of the invention (8) The height of the plurality of shutters 26 in the area can block the interference image light source 22, so that the linear image light source 22 can be completely transmitted to the optical imaging device 28 to transmit complete image data. When the complete image data is converted into a digital signal by an analog-to-digital conversion system (ADC 'analogy-digital cone system), the image data can be completely displayed on the output device so that the modulation transfer function (MTF' modulation transfer function) It can be improved and the resolution when the image data is output can be continued. The fourth figure is an optical scan with an optical well imaging device 28, which is a top view. In the fourth figure, there are two optical scanning modules, one is a transparent module 40 for scanning a transparent object, and the other is for reflective scanning. Reflected scanning module (reflected scanning module) 50 of the object (reflected scanning object). When scanning the penetrating scanning object 20, when the light source 42 irradiates the penetrating scanning object 20, an image source 60 is generated and transmitted to the optical well imaging device 28. Then, the image data is sent to the light sensor 30 and the image pattern is focused on the light sensor 30. When the reflective scanning object 20 is scanned, when the light source 52 irradiates the reflective scanning object 20, an image light source 60 is generated. The image light source 60 is then transmitted to the optical well imaging device 28, and the image data is transmitted to the light sensor 30, and the data is completely focused on the light sensor 30. y

Page 12 554623 V. The invention says that qg (q) root 摅 n, f / can be known on the basis of the penetrating penetrating object 'when the image light source is transmitted to the light sensing 2 object or # ^ and other directions Interfere with the light source, making its light residual judgment: because of the wired source, its image data can be completely stolen = receiving f2, so that the resolution of the light dispersion effect sensor during scanning can be greatly increased . . Further, its image pixels are described above only for the scope of patent application of the present invention; Second, they are not intended to limit the equivalent changes made in the spirit or: The dagger does not depart from the disclosure of the present invention Within the scope of the patent. " Decorations' shall be included in the following application 554623. The diagram A briefly illustrates the transmission of an image light source to an optical scanning device with a conventional lens imaging device. The response distribution curve generated by the figure. The second figure is a block diagram showing the structure of an optical scanner with an optical well imaging device according to the present invention. The third figure is an apparatus according to the present invention, showing optical well imaging. A schematic diagram of the device receiving a reflected light beam; and the fourth figure is a schematic diagram of the device according to the present invention, showing the structure of an optical scanning module with an optical well imaging device. Main symbols: 1 Optical scanning device 2 Light source · 3 Optical well imaging device 4 Optical sensor 5 Analog-digital conversion system 6 Special application integrated circuit 7 Calibration database 8 Temporary memory

Page 14 554623 Brief description of the diagram 9 Transmission interface 10 Host 11 Output device 20 Scanned object 22 Image light source 24 Non-inductive area 26 'Optical shutter 28 Optical well imaging device 30 Light sensor 40 Transmissive scanning module 42 Light source 50 Reflective scanning module 52 light source 60 image light source 100 scanned object 102 reflected light source 102A light source point 102B light source point 102C light source point 104 lens imaging device 106 light sensor 200 response curve distribution diagram 2 02A endpoint 202B endpoint

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554623 Schematic illustration of 202C endpoint

Circle_ p.16

Claims (1)

554623 6. Application scope 1. An optical scanning device, the optical scanning device includes: a light source irradiates a scanned object to generate an image light source; an imaging device receives the image light source; and a plurality of optical shutters allow a part of the light beam to enter On a light sensor, the plurality of shutters are located on a non-sensing area of the light sensor and the light sensor is used to receive the part of the image light source transmitted by the imaging device. 2. The optical scanning device according to item 1 of the application, wherein the image light source includes a reflective light source. 3. The optical scanning device according to item 1 of the patent application, wherein the image light source includes a transmissive light source. Fan Li for the installation of the 4th installation, please apply for installation as described in the description of the wells. The installation of the item is like the description above. The same phase with a wide range of items and descriptions of the study light has the same gate with a gap between the two sides of the frame. Please ask Guangshen to place more than 5 of them. Sensitivity of the device 丨 This first small fan Fandu Likuan = lip white Shen Jianru No. 6 gate installed scanning light of the number of items described above, its prime like a 1 block second block in 々 巳 HU . The application of the high degree of application for high-level applications such as light 7. The number of items installed in the scanning light is described above. The source light interferes with the production of the light. Page 17 6 'Scope of patent application 8 · If you apply for a patent Fan Yidi! TS also includes an analog image data and converts the -digital conversion system to the optical scanning device-to the digital signal. -The application integrated circuit sent by the light sensor 1: The optical scanning device of J1 item, further including-special the digital signal and processing the 1-transmitted by the ratio-digital conversion system-a kind of optical scanning The light v. Zhao A + 5H optical scanning device includes: a source ... shoots a scanned object to produce-the imaging device receives "like a source", most of the light is located on the light sensor and the beam enters the light sensor The "" part is used to block the light from JL other light | = a number of shutters have a high for receiving the light source and the light sensor # u + conveyed by Part of the image light source; an image data transfer system to receive the image data transmitted by the light sensor and convert the image data into a digital signal; and "King: Special application integrated circuit The user receives the digital signal transmitted by the analog-to-digital conversion system and processes the digital signal. The above-mentioned image 11. The optical scanning device according to item 0 of the patent application scope. The image light source includes a reflective light source. 554623 6. Scope of patent application 1 2. The optical scanning device according to item 10 of the patent application scope, wherein the image light source includes a transmissive light source. 13. The optical scanning device according to claim 10, wherein the imaging device is an optical well imaging device. 14. The optical scanning device according to item 10 of the patent scope, wherein the light sensor is a contact image sensor. 15. The optical scanning device according to item 10 of the patent application scope, wherein the photo sensor is a charge consumable device. 16. The optical scanning device according to item 10 of the application, wherein the intervals between the plurality of shutters have the same width. 1 7. The optical scanning device according to item 16 of the patent application scope, wherein a width between the plurality of shutters is smaller than each pixel on the light sensor. 1 8. An optical scanning device having an optical well imaging device, the optical scanning device includes: a light source illuminates a scanned object to generate an image light source; an optical well imaging device is used to receive the image light source; most shutters have The same interval width is located on a non-sensing area of the light sensor and allows part of the light beam to enter a light sensor, wherein the multiple Page 19 5 554623 6. The scope of patent application Several optical shutters have a height enough to block the interference light source generated by other light beams and the light sensing 1§ to receive the part of the image transmitted by the optical well imaging device Light source; ~ an analog-to-digital conversion system for receiving the image data transmitted by the light sensor to convert the image data into a digital signal; and, a special application integrated circuit body receiving by the analog-digital The digital signal transmitted by the system is converted and processed. 19, The optical scanning device according to item 8 of the patent application range, wherein the image light source includes a reflective light source. 20. The optical scanning device according to item 18 of the scope of patent application, wherein the image light source includes a transmissive light source. 21 · The optical scanning device according to item 18 of the scope of patent application, wherein the light sensor is a contact image sensor. 22 · The optical scanning device according to item 8 of the patent application, wherein the above-mentioned photoresistor is a charge coupled device. 23. The optical scanning device according to item 8 of the patent application scope, wherein the width between the plurality of shutters is smaller than each pixel located on the light sensor Page 20