JP6553685B2 - Reflective image detection sensor - Google Patents

Description

  The present invention relates to a reflective image detection sensor.

  Generally, LCD manufacturing glass (Glass) can be stacked and transported in a cassette because it is input to a plurality of processes. Such glass (Glass) has a different size for each generation, and the pitch of the glass (Glass) stacked in the cassette may be different.

  Conventionally, in order to detect glass, a transmissive or reflective mapping sensor is used. In the transmissive or reflective mapping sensor, the detection optical axis has to be positioned at a regular place in order to detect the glass. As a result, the conventional transmissive or reflective mapping sensor has only to develop and manufacture a plurality of products based on other process-specific and generational pitches. In addition, in the case of the transmission type mapping sensor, many problems have to be taken into consideration, depending on the installation environment, such as an installation vertical angle and a glass (standard) mounting height.

  The object of the present invention is to solve the problems mentioned above and others. Another object of the present invention is to provide a reflective image detection sensor capable of detecting various sizes of glass by symmetrically configuring a plurality of light emitting units based on a light receiving unit.

  In order to achieve the above or other objects, according to one aspect of the present invention, a housing, a light receiving unit installed in the housing, and a plurality of light emitting units provided in the housing along one direction of the housing are provided. And the plurality of light emitting units are positioned adjacent to one side of the light receiving unit and adjacent to the other side of the light receiving unit, and the first light emitting unit is centered on the light receiving unit. The light receiving unit includes a second group of light emitting units symmetrical to one group of light emitting units, the light receiving unit has a light receiving axis extending from the housing to the outside of the housing, and each of the plurality of light emitting units includes: A reflective image detection sensor having a plurality of light emitting axes intersecting with the light receiving axis is provided.

  The light emitting unit of the first group may include a first light emitting unit and a second light emitting unit positioned between the first light emitting unit and the light receiving unit.

  The distance between the first light emitting part and the second light emitting part may be greater than the distance between the light receiving part and the second light emitting part.

  According to another aspect of the present invention, the first light emitting unit has a first light emitting axis and the second light emitting unit has a second light emitting axis, which is formed by the first light emitting axis and the light receiving axis. The angle may be larger than an angle formed by the second light emitting axis and the light receiving axis.

  According to another aspect of the present invention, the light receiving axis can be tilted (tilted) from a normal line in one direction of the housing.

  According to another aspect of the present invention, the plurality of light emitting units may be aligned in a line along one direction of the housing, and the light receiving unit may be out of the line.

  According to another aspect of the present invention, the light receiving unit includes an image sensor placed on the light receiving axis, a slit formed on the light receiving axis, the image sensor, and a lens positioned between the slits. Can be included.

  The light receiving unit may include a filter positioned between the lens and the image sensor.

  According to another aspect of the present invention, the housing may include a partition wall formed around the slit.

  According to another aspect of the present invention, the partition wall may be protruded from a front surface of the light receiving unit and may surround the slit.

  According to another aspect of the present invention, the partition wall is separated from the slit, extended along the lengthwise direction of the slit, and separated from the first part located above the slit and the slit; A second part extending along a length direction of the slit and positioned at a lower portion of the slit; and a third part extending from one end of the first part to one end of the second part, and from the slit The distance to the first part or the second part may be closer than the distance from the slit to the third part.

  According to another aspect of the present invention, the light emitting unit includes a light emitting element placed on the light emitting axis, a lens positioned on the light emitting axis, and a slit formed between the light emitting element and the lens. Can be included.

  According to another aspect of the present invention, a first light receiving unit provided in the housing, a second light receiving unit provided apart from the first light receiving unit, and the first light receiving unit to the second light receiving unit A plurality of light emitting units sequentially disposed, wherein at least one of the plurality of light emitting units has a light emitting axis that intersects a light receiving axis of the first light receiving unit, At least one other may have a light emitting axis that intersects the light receiving axis of the second light receiving unit.

  According to another aspect of the present invention, at least one of the plurality of light emitting portions having a light emitting axis intersecting the light receiving axis of the first light receiving portion is a light emitting axis intersecting the light receiving axis of the second light receiving portion. The light receiving unit may be closer to the second light receiving unit than at least another one of the plurality of light emitting units having the

  According to another aspect of the present invention, the housing includes a plurality of seating portions on which the plurality of light emitting portions are placed, and the plurality of seating portions are positioned adjacent to one side of the light receiving portion. A seating portion of one group and a seating portion of a second group located adjacent to the other side of the light receiving portion and symmetrical to the seating portion of the first group centering on the light receiving portion; One seat of one seat of the group may have another slope of the other seat of the seat of the first group.

  According to another aspect of the present invention, the seating parts of the first group may be different in distance from the respective seating parts.

  The effects of the reflective image detection sensor according to the embodiment of the present invention will be described below.

  According to at least one of the embodiments of the present invention, glasses of various sizes can be detected by symmetrically configuring the plurality of light emitting units based on the light receiving unit.

  According to at least one of the embodiments of the present invention, the number of light receiving units can be reduced by symmetrically configuring the plurality of light emitting units based on the light receiving unit.

  According to at least one of the embodiments of the present invention, the product can be simplified by symmetrically configuring the plurality of light emitting units based on the light receiving unit.

  According to at least one of the embodiments of the present invention, the plurality of light emitting units and the light receiving units are fastened to the flexible cable, so that they can be easily applied to various products.

  According to at least one of the embodiments of the present invention, the reliability and accuracy of the product can be improved by superposing the light emitting area and detecting the glass.

It is a figure which shows an example of a detection apparatus containing the reflection type image detection sensor which concerns on one embodiment of this invention. It is a figure which shows an example of the detection algorithm of the reflection type image detection sensor which concerns on one embodiment of this invention. It is a figure which shows an example of arrangement | positioning of the reflection type image detection sensor which concerns on one embodiment of this invention. It is a figure which shows an example of the position of the light emission part which concerns on one embodiment of this invention, and a light reception part. It is a figure which shows an example of the position of the light emission part which concerns on one embodiment of this invention, and a light reception part. It is a figure which shows an example by which a light-receiving part is inclined based on one embodiment of this invention. It is a figure which shows an example by which a light-receiving part is inclined based on one embodiment of this invention. It is a figure which shows an example of decomposition | disassembly of the light emission part which concerns on one embodiment of this invention. It is a figure which shows an example of decomposition | disassembly of the light-receiving part which concerns on one embodiment of this invention. FIG. 6 illustrates an example of a reflective image sensor configured in a set according to an embodiment of the present invention. It is a figure which shows an example of the optical range of the optical signal of FIG. It is a figure which shows an example of the optical range of the optical signal of FIG. FIG. 6 illustrates an example of a reflective image sensor configured in two sets according to an embodiment of the present invention. It is a figure which shows an example of the optical range of the optical signal of FIG. It is a figure which shows an example of the optical range of the optical signal of FIG. It is a figure which shows an example of the dead zone which generate | occur | produces between a 1st set and a 2nd set. FIG. 5 is a diagram showing an example of a spectrum received based on an embodiment of the present invention. It is a figure which shows an example of the optical path of the inclination angle which the reflection type image detection sensor which concerns on one embodiment of this invention changes according to distance. It is a figure which shows an example of the optical path of the inclination angle which the reflection type image detection sensor which concerns on one embodiment of this invention changes according to distance. It is a figure which shows an example of the optical path of the inclination angle which the reflection type image detection sensor which concerns on one embodiment of this invention changes according to distance. It is a figure which shows an example of the relationship between power and the number of pixels based on one embodiment of this invention. It is a figure which shows an example of the flexible cable of the reflection type image detection sensor which concerns on other embodiment of this invention. It is a figure which shows an example of what a flexible cable and a light emission part are fastened based on other embodiment of this invention. It is a figure which shows an example of what a flexible cable and a light emission part are fastened based on other embodiment of this invention. It is a figure which shows an example of what a flexible cable and a light emission part are fastened based on other embodiment of this invention. It is a figure which shows an example of the state by which the light emission part was fastened to the flexible cable based on other embodiment of this invention. It is a figure which shows an example of the module fixing | fixed part which concerns on other embodiment of this invention. It is a figure which shows an example by which a module fixing | fixed part is arrange | positioned at a reflection type image detection sensor comprised by two sets according to other embodiment of this invention.

  Hereinafter, embodiments disclosed in the present specification will be described in detail with reference to the accompanying drawings. However, regardless of the reference numerals in the drawings, similar components are given the same reference numerals, and duplicated thereto. Description to be omitted is omitted. The suffixes “module” and “parts” of the components used in the following description are given and mixed only in consideration of the ease of preparation of the description, and are themselves distinguished from one another There is no meaning or role. Further, in describing the embodiment disclosed in the present specification, it is determined that a specific description of a related known technique can obscure the gist of the embodiment disclosed in the present specification. In this case, detailed description thereof is omitted. Also, the attached drawings are for the purpose of easily understanding the embodiments disclosed herein, and the technical ideas disclosed herein are limited by the attached drawings. It is to be understood that the present invention includes all modifications, equivalents, and alternatives that fall within the spirit and scope of the present invention.

  Although terms including ordinal numbers such as first, second, etc. can be used to describe various components, the components are not limited by the terms. The terms are only used to distinguish one component from another component.

  If any component is referred to as being “connected” or “coupled” to another component, it must be directly connected to or coupled to the other component However, it should be understood that there may be other components in between.

  On the other hand, when any component is referred to as being “directly connected” or “directly coupled” to another component, it should be understood that there are no other components in between. is there.

  The singular expression also includes the plural, unless the context clearly indicates otherwise.

  In this application, terms such as “comprising” or “having” are intended to indicate that there is a feature, number, step, action, component, part, or combination thereof described in the specification. It is to be understood that the existence or addition of one or more other features or numbers, steps, acts, components, parts or combinations thereof is not precluded in advance.

  Referring to FIG. 1, the loading device (Cassette 110) may be formed in a rectangular three-dimensional box, and one side may be open. The loading device (Cassette, 110) may have at least one slot (Slot) spaced apart at regular intervals.

  The loading device (Cassette 110) may load at least one display manufacturing glass (Slass 111) for each slot through one open side. In the loading device (Cassette, 110), the volume of the rectangular solid box may change according to the size of the display manufacturing glass (Glass, 111).

  Various sizes of display manufacturing glass (Glass, 111) can be loaded into slots of a loading device (Cassette, 110) having different volumes. Since the loading device (Cassette, 110) is input into a plurality of processes, glass for manufacturing a display (Glass, 111) can be stacked and transferred.

  The detection sensor 120 may be disposed at a predetermined distance from one side surface of a stacking device on which display manufacturing glass (Glass, 111) is stacked. The detection sensor 120 includes a housing (HA: see FIGS. 8 and 11) elongated in the longitudinal direction, a light receiving unit (LR: see FIGS. 8 and 11) installed in the housing (HA), and a housing (HA). A plurality of light emitting units (LP) installed in the housing (HA) along the length direction may be included. The detection sensor 120 can output an optical signal to the stacked display manufacturing glass (Glass, 111) using a plurality of light emitting units (LP). The light signal may be reflected by the side surface or edge surface of the display manufacturing glass (Glass, 111) and may be received by the light receiving unit (LR). A detailed description of the detection sensor 120 will be described later.

  The main control unit 130 can be electrically connected to the detection sensor 120 using wired or wireless communication. The main control unit 130 can receive a signal from the detection sensor 120 and analyze it using a discrimination algorithm. The main control unit 130 can analyze the received optical signal using an identification algorithm and recognize whether or not display manufacturing glass (Glass, 111) is loaded in the slot of the stacking device.

  The main control unit 130 can display whether to load using a display unit (not shown). The main control unit 130 turns on the green LED if the display manufacturing glass (Glass, 111) is loaded in the slot, and turns on the red LED if not loaded. (Turn on). Further, the main control unit 130 can determine that the defect rate is large when the display manufacturing glass (Glass, 111) loaded in the slot is lower than the set reference range, and can notify the administrator of this. A notification unit may be further included.

  Here, although it has been described that the display unit is disposed in the main control unit 130, the present invention is not limited to this, and the display unit may be provided in the detection sensor 120. In the detection sensor 120, a display unit can be arranged on the opposite side where the light emitting unit (LP) or the light receiving unit (LR) is arranged. The detection sensor 120 receives the determination data obtained by analyzing the optical signal from the main control unit 130 and can turn on the green LED or the red LED on the display unit.

  Although FIG. 1 shows that the main control unit 130 and the detection sensor 120 are disposed separately from each other, the present invention is not limited to this, and one main control unit 130 and one detection sensor 120 are provided. Can also be designed.

  Referring to FIG. 2, the mathematical formula by which the reflective image detection sensor 120 can detect the glass 111 according to the installation distance is as follows.

  θ is the maximum light receiving angle that can be received by the last glass 111 stacked in the slot of the loading device 110 based on the light receiving axis (LRA). Y is the maximum distance between the detection sensor 120 and the glass 111 stacked in the slot of the loading device 110, and X is the last glass 111 stacked in the slot of the loading device glass 110 based on the light receiving part (LR). Can be shown.

  Φ1 is a light incident angle, which is a sensed light receiving angle received through the front surface of the lens disposed in the Φ light receiving unit (LR), and can indicate the M lens magnification.

  X1 is the separation distance of the glass 111 stacked in the slot of the stacking device 110 on the light receiving path, and Y is the maximum installation distance between the detection sensor 120 and the glass 111 stacked in the slot of the stacking device 110, Y1 may indicate a separation distance at which the glass 111 stacked in the slot of the stacking device 110 can be physically separated.

  L is a distance that can be received by the image sensor of the light receiving unit (LR) around the light receiving axis (LRA), and D can indicate a constant that determines a light receiving path due to lens distortion.

  In the case where the above-described Equations 1 to 4 are applied, even if the glass 111 is detached in the slot, the misalignment of the loading device 110, the deflection of the glass 111, or the like is reflected on the side surface or the edge surface of the glass 111. The regressing path can have a certain range.

  Based on such a formula, a plurality of products can be organized by one detection method to simplify the products.

  Referring to FIG. 3, the housing (HA) may be formed in a rectangular solid box extended in the first direction (DR1). The housing (HA) can be disposed on one side of the stacking device 110 such that the light receiving unit (LR) and the plurality of light emitting units (LP1 to LP6) are arranged in parallel.

  The light receiving unit (LR) can be disposed substantially at the center of the housing (HA).

  The light emitting units LP1 to LP6 may be installed in the housing HA along a first direction which is a longitudinal direction of at least the plurality of housings HA. The plurality of light emitting units LP1 to LP6 includes a first group of light emitting units LP1 to LP3 including at least one light emitting unit LP and a second group including at least one light emitting unit LP. Light emitting portions (LP3 to LP6).

  The first group of light emitting units (LP1 to LP3) may be positioned adjacent to one side of the light receiving unit (LR). The light emitting units LP1 to LP3 of the first group may include the first light emitting unit LP1 to the third light emitting unit LP3. The third light emitting unit LP3 may be positioned between the second light emitting unit LP2 and the light receiving unit LR. The first light emitting unit LP1 may be disposed at one side of the second light emitting unit LP2, and the third light emitting unit LP3 may be disposed at the other side.

  A distance W2 between the second light emitting part LP2 and the third light emitting part LP3 may be larger than a distance W1 between the third light emitting part LP3 and the light receiving part LR. A distance W3 between the first light emitting part LP1 and the second light emitting part LP2 may be larger than a distance W2 between the second light emitting part LP2 and the third light emitting part LP3.

  The distance (W1) between the light receiving part (LR) and the third light emitting part (LP3), the distance (W2) between the third light emitting part (LP3) and the second light emitting part (LP2), and the second light emitting part (LP2). ) And the distance (W3) between the first light emitting unit (LP1) can be gradually increased.

  Further, the light receiving part (LR) can have a light receiving axis (LRA) extending to the outside of the housing (HA). The light receiving axis can extend in the second direction (DR2). The light receiving axis (LRA) may be in the horizontal direction (DR2) intersecting the vertical direction (DR1). Here, the lateral direction (DR 2) may be the direction in which the detection sensor 120 looks at the loading device 110.

  Each of the plurality of light emitting units LP1 to LP6 may have a plurality of light emitting axes LPA intersecting with a light receiving axis LRA. The first light emitting unit (LP1) has a first light emitting axis (LPA1), the second light emitting unit (LP2) has a second light emitting axis (LPA2), and the third light emitting unit (LP3) has a second light emitting axis It can have three light emitting axes (LPA3).

  The angle formed between the first light emitting axis (LPA1) and the light receiving axis (LRA) can be larger than the angle formed between the second light emitting axis (LPA2) and the light receiving axis (LRA). The angle between the second light emitting axis (LPA2) and the light receiving axis (LRA) can be larger than the angle between the third light emitting axis (LPA3) and the light receiving axis (LRA). In addition, the distance between the light emitting units (LP1 to LP3) of the first group of light emitting units (LP1 to LP3) increases as the distance from the light receiving unit (LR) increases, and the angle formed with the light receiving axis (LRA) can be increased. .

  The light emitting units (LP4 to LP6) of the second group may be located adjacent to the other side of the light receiving unit (LR). The light emitting units LP4 to LP6 of the second group may include fourth to sixth light emitting units LP4 to LP6. The fourth light emitting unit LP4 may be positioned between the fifth light emitting unit LP5 and the light receiving unit LR. The fourth light emitting unit LP4 may be disposed on one side of the fifth light emitting unit LP5, and the sixth light emitting unit LP6 may be disposed on the other side.

  The interval (W2) between the fourth light emitting unit (LP4) and the fifth light emitting unit (LP5) may be larger than the interval (W1) between the fourth light emitting unit (LP4) and the light receiving unit (LR). The distance W3 between the fifth light emitting part LP5 and the sixth light emitting part LP6 may be larger than the distance W2 between the fourth light emitting part LP4 and the fifth light emitting part LP5.

  The distance (W1) between the light receiving part (LR) and the fourth light emitting part (LP4), the distance (W2) between the fourth light emitting part (LP4) and the fifth light emitting part (LP5), and the fifth light emitting part (LP5) The distance W3 of the sixth light emitting portion LP6 to the sixth light emitting portion LP6 may be gradually increased.

  Also, the fourth light emitting unit (LP4) has a fourth light emitting axis (LPA4), the fifth light emitting unit (LP5) has a fifth light emitting axis (LPA5), and the sixth light emitting unit (LP6) has And a sixth light emitting axis (LPA6).

  The angle between the sixth light emitting axis (LPA6) and the light receiving axis (LRA) can be made larger than the angle between the fifth light emitting axis (LPA5) and the light receiving axis (LRA). The angle formed by the fifth light emitting axis (LPA5) and the light receiving axis (LRA) can be larger than the angle formed by the fourth light emitting axis (LPA4) and the light receiving axis (LRA). Here, as the light emitting units (LP4 to LP6) of the second group move away from one side of the light receiving unit (LR), the interval between the light emitting units (LP) increases, and the angle is inclined toward the light receiving axis (LRA). Can also be larger.

  A first group of light emitting units (LP1 to LP3) disposed on one side of the light receiving unit (LR) with a light receiving unit (LR) as a center, and a second group of light emitting units disposed on the other side of the light receiving unit (LR). (LP4 to LP6) can be symmetrical. In other words, the third light emitting unit (LP3) is symmetrical with the fourth light emitting unit (LP4), the second light emitting unit (LP2) is symmetrical with the fifth light emitting unit (LP5), and the first light emitting unit. (LP1) may be symmetrical to the sixth light emitting unit LP6.

  Thus, the light receiving unit (LR) can receive the light emitted from the plurality of light emitting units (LP1 to LP6) configured symmetrically.

  For example, H = 85 mm, W = 120 mm, W1 = 32 mm, W2 = 40 mm, W3 = 48 mm, the first light emitting part (LP1) is about 20 degrees, the second light emitting part (LP2) is about 10 degrees, the second The three emitters (LP3) can be tilted by an angle of about 5 degrees.

  Although FIG. 3 shows that the detection sensor 120 is disposed apart from the loading device 110 by a predetermined distance, the present invention is not limited to this. By changing the separation distance between the detection sensor 120 and the loading device 110, the tilt angles of the light emitting units (LP1 to LP3) of the first group and the light emitting units (LP4 to LP6) of the second group can also be changed. A detailed description thereof will be described later.

  Referring to FIG. 4A, each of the plurality of light emitting units (LPs) may have a center point (CP). The central point (CP) can be defined as a point through which the optical axis of the light emitting unit (LP) passes. The emission center line (CL) can be defined by a line connecting a plurality of center points (CP). The light emitting units (LP) may be aligned in a line along the length direction (DR1) of the housing (HA) based on the light emission center line (CL).

  Further, the light emission axis (LPA) intersecting the light receiving axis (LRA) can pass through the center point (CP).

  Referring to FIG. 4B, the light receiving part (LR) may include a center point of the light receiving part (LR). The center point of the light receiving part (LR) can be defined as a point through which the optical axis of the light receiving part (LR) passes. A central point of the light receiving unit LR may be disposed in the housing HA at a distance h1 from the light emission center line. In addition, the light receiving part (LR) can be removed from the plurality of light emitting parts (LP) arranged in a line and disposed in the housing (HA).

  The light receiving unit (LR) can sense a wider area as it receives more light signals output from the plurality of light emitting units (LP). That is, the light receiving unit (LR) can have a wider sensing area as the number of optical signals increases.

  The light receiving part (LR) is arranged so that the center point of the light receiving part (LR) is separated (h1) from the light emission center line, so that the center point of the light receiving part (LR) is relative to the light emission center line. Thus, the sensitivity of the detection sensor 120 can be improved.

  That is, the light provided by the light emitting unit (LP) is reflected by the sensing object and sensed by the light receiving unit (LR). In this process, the sensing object, for example, the glass substrate is bent, or the sensing objects have different sizes. If different, disturbance may occur. However, the arrangement of the light receiving unit (LR) described above can improve the sensitivity of the detection sensor 120 regardless of such disturbance.

  In another example, the light provided from the light emitting unit (LP) may be reflected to the light receiving unit (LR) by being reflected by a background that can be located behind the sensing object, not the sensing object. However, the arrangement of the light receiving unit (LR) can improve the sensitivity of the detection sensor 120 regardless of such disturbance.

  For example, the predetermined range (h1) in which the center point of the light receiving unit (LR) is separated from the light emission center line may be 3.30 mm or more and 3.44 mm or less.

  As shown in FIG. 5A, the light receiving part (LR) may have a light receiving axis (LRA) extending to the outside of the housing (HA).

  As shown in FIG. 5B, the light receiving axis (LRA) can be tilted from the light emitting axis (LPA). At this time, the light receiving axis (LRA) may have a tilt angle of about 4.0 degrees or more and about 4.5 or less based on the light emitting axis (LPA).

  By tilting the light receiving axis (LRA) from the light emitting axis (LPA), the sensitivity of the detection sensor 120 can be further improved when the light receiving axis (LRA) coincides with the light emitting axis (LPA). .

  That is, the light provided from the light emitting unit (LP) is reflected by the sensing object and sensed by the light receiving unit (LR). In this process, the sensing object, for example, the glass substrate is bent or the sizes of the sensing objects are different from each other. If different, disturbance may occur, but the inclination of the light receiving unit (LR) described above can improve the sensitivity of the detection sensor 120 regardless of such disturbance.

  As another example, the light provided from the light emitting unit (LP) may be reflected by the background that can be located behind the detected object, not the detected object, and may be incident on the light receiving unit (LR). However, the inclination of the light receiving unit (LR) can improve the sensitivity of the detection sensor 120 regardless of such disturbance.

  The light receiving unit (LR) is arranged such that the center point of the light receiving unit (LR) is such that the light emission center point exits the light emission center line (CL) and the light receiving axis (LRA) is tilted. At the same time as spreading, the edge surface of the display manufacturing glass 111 can be detected more accurately.

  Referring to FIG. 6, the light emitting unit (LP) may include a light emitting device (LED), a lens (LN) and a slit (LPST).

  A light emitting device (LED) may be disposed on a light emitting axis (LPA). The light emitting device (LED) may include an LED (Light-Emitting Diode) that is a light emitting diode or an OLED (Organic Light Emitting Diodes) that is an organic light emitting diode.

  The lens (LN) can be arranged on the light emission axis (LPA). The lens LN may refract light incident from the light emitting device LED at different angles and provide the light to the edge surface of the display manufacturing glass 111 loaded on the loading device 110.

  The slit (LPST) can be disposed between the light emitting element (LED) and the lens (LN). A slit (LPST) can be defined as a narrow gap created by facing two surfaces in parallel. The slit (LPST) can use a narrow gap to limit the width of light output from the light emitting element.

  Referring to FIG. 7, the light receiving unit LR may include a slit LRST, a lens LN, and an image sensor IS.

  The slit (LRST) can be disposed on the light receiving axis (LRA). The light reflected by the edge surface of the display manufacturing glass 111 can pass through the slit (LRST).

  The lens (LN) can be disposed on the light receiving axis (LRA). The lens (LN) can be disposed between the slit (LRST) and the image sensor (IS). The lens (LN) can cause light received through the slit (LRST) to converge on the image sensor (IS).

  An image sensor (IS) may be disposed on a light receiving axis (LRA). The image sensor (IS) may supply the converted light signal to the main control unit 130.

  The filter (FL) can be disposed between the lens (LN) and the image sensor (IS). The filter (FL) can filter (FL) the received optical signal to remove distortion and unwanted reflected light.

  Referring to FIGS. 8 to 10, the reflective image detection sensor 120 may include a housing HA1, HA2, a light receiver LR1, and a light emitter LP.

  The housings (HA1, HA2) may include a first housing (HA1) and a second housing (HA2). The first housing HA1 can include a plurality of light emitting units LP11 to LP16 and a light receiving unit LR1 on one side. The partition 140 may be disposed around the slit (LRST) of the light receiving unit (LR1). By arranging the partition wall 140 so as to surround the periphery of the slit (LRST) at a certain height, it is possible to block the peripheral light of the light receiving unit (LR1) from flowing into the light receiving unit (LR1). The second housing HA2 may be coupled to the other side of the first housing HA1 to fix the plurality of light emitting units LP11 to LP16 and the light receiving unit LR1.

  Referring to FIG. 8, the partition wall 140 may be located around the slit (LRST). The partition wall 140 may protrude from the front surface of the light receiving unit (LR1) around the slit (LRST). The partition 140 may include a first part 141, a second part 142, a third part 143, and a fourth part 144.

  The first part 141 may be located above the slit (LRST). At this time, the first part 141 may be separated from the slit LRST by a predetermined distance D1. The second part 142 may be located below the slit (LRST). The second part 142 may be spaced apart from the slit LRST by a predetermined distance D2. The distance (D2) can be the same as the distance (D1). The second part 142 can face the first part 141.

  The third part 143 may extend from one end of the first part 141 to one end of the second part 142. The fourth part 144 can extend from the other end of the first part 141 to the other end of the second part 142. The fourth part 144 can face the third part 143. The third part 143 may be located to the right or left of the slit (LRST). At this time, the third part 143 may be separated from the slit LRST by a predetermined distance D3. The fourth part 144 may be located to the left or right of the slit (LRST). At this time, the fourth part 144 may be separated from the slit LRST by a predetermined distance D4.

  The distances (D3, D4) may be greater than the distances (D1, D2). Thereby, the range of the light which passes a slit (LRST) can be made wider on either side based on a slit (LRST). This can be achieved by allowing more light provided by the light emitting unit (LP) to flow into the light receiving unit (LR).

  Referring to FIG. 9, the housing (HA1) may include seating portions (121 to 126).

  The housing (HA1) can include a plurality of seat portions (121 to 126). The seating parts (121 to 126) can provide a base on which the light emitting part (LP) can be mounted. The plurality of seating parts (121 to 126) may have a base that is inclined at a constant angle, and the angle of the base may be perpendicular to the light emission axis (LPA) of the light emitting part (LP) described above or later. it can.

  9 and 10, a plurality of display manufacturing glasses 111 are represented by first glass 1 to eleventh glass 11.

  As illustrated in FIGS. 9 and 10, the plurality of light emitting units (LP) may include an eleventh light emitting unit (LP11) to a sixteenth light emitting unit (LP16). The eleventh to thirteenth light emitting units LP11 to LP13 may be disposed at one side of the light receiving unit LR1, and the fourteenth to sixteenth light emitting units LP14 to LP16 may be provided as follows. It can arrange | position to the other side of a light-receiving part (LR1).

  The eleventh light emitting unit LP11 may have a light range LS11 or an irradiation angle in which the first to third glasses 1 to 3 can be detected.

  The twelfth light emitting unit (LP12) has a light range (LS12) or an irradiation angle capable of detecting the third glass 3 and / or the fourth glass 4 or detecting the third glass 5 to the fifth glass 5 be able to.

  The thirteenth light emitting unit LP13 may have a light range LS13 or an irradiation angle in which the fourth to sixth glasses 6 to 6 can be detected.

  The fourteenth light emitting unit LP 14 may have a light range LS 14 or an irradiation angle in which the sixth to eighth glasses 6 to 8 can be detected.

  The fifteenth light emitting unit (LP15) has a light range (LS15) or an irradiation angle capable of detecting the eighth glass 8 and / or the ninth glass 9 or detecting the seventh glass 7 to the ninth glass 9 be able to.

  The sixteenth light emitting unit LP16 may have a light range LS16 or an irradiation angle in which the ninth to eleventh glasses 11 to 11 can be detected.

  The light range (LS) or illumination angle can be referred to as a light signal.

  The reflective image detection sensor 120 can detect the first to eleventh glasses 11 by superimposing a part of the eleventh light signal (LS11) to the sixteenth light signal (LS16) with each other.

  The eleventh light emitting unit (LP11) through the sixteenth light emitting unit (LP16) output the eleventh optical signal (LS11) through the sixteenth optical signal (LS16) so as to be superimposed on each other, thereby loading in the slot of the stacking device 110. Thus, the first to eleventh glasses 11 can be accurately detected without falling off.

  A superposition range (OL2) in which the twelfth light signal (LS12) and the thirteenth light signal (LS13) are superposed is a superposition range (OL1) in which the eleventh light signal (LS11) and the twelfth light signal (LS12) are superposed. May be wider. That is, the superposed optical signal (LS) can become wider as it approaches the light receiving part (LR1).

  The thirteenth light emitting unit (LP13) and the fourteenth light emitting unit (LP14) disposed on both sides of the light receiving unit (LR1) superimpose the thirteenth optical signal (LS13) and the fourteenth optical signal (LS14) on each other. It is possible to accurately detect the fifth glass 5 to the seventh glass 7 arranged in the region corresponding to the light receiving part (LR1).

  The reflective image detection sensor 120 superimposes an optical signal (LS) so that the display manufacturing glass 111 stacked in the slot of the stacking device 110 can be bent or not accurately aligned in the slot. The glass 111 can be accurately detected.

  Referring to FIGS. 11-13, the reflective image sensor 120 can be configured in a plurality of sets. Each of the plurality of sets can include a plurality of light emitting units (LP) and light receiving units (LR). The plurality of sets will be described in a first set (Set 1) and a second set (Set 2).

  The first and second sets (Set1, 2) can detect a plurality of display manufacturing glasses 111 stacked on the stacking device 110. In FIGS. 12 and 13, a plurality of display manufacturing glasses 111 are represented by the first glass 1 to the 22nd glass 22.

  Referring to FIG. 11, the partition wall 140 may be located around the slit (LRST). The partition wall 140 may protrude from the front surface of the light receiving unit (LR1) around the slit (LRST). The partition 140 may include a first part 141, a second part 142, a third part 143, and a fourth part 144.

  The first part 141 may be located above the slit (LRST). At this time, the first part 141 may be separated from the slit LRST by a predetermined distance D1. The second part 142 may be located below the slit (LRST). The second part 142 may be spaced apart from the slit LRST by a predetermined distance D2. The distance (D2) can be the same as the distance (D1). The second part 142 can face the first part 141.

  The third part 143 may extend from one end of the first part 141 to one end of the second part 142. The fourth part 144 can extend from the other end of the first part 141 to the other end of the second part 142. The fourth part 144 can face the third part 143. The third part 143 may be located to the right or left of the slit (LRST). At this time, the third part 143 may be separated from the slit LRST by a predetermined distance D3. The fourth part 144 may be located to the left or right of the slit (LRST). At this time, the fourth part 144 may be separated from the slit LRST by a predetermined distance D4.

  The distances (D3, D4) can be greater than the distances (D1, D2). Thereby, the range of the light which passes a slit (LRST) can be made wider on either side based on a slit (LRST). This may be to allow more light provided from the light emitting unit (LP) to flow into the light receiving unit (LR).

  Referring to FIG. 12, the housing (HA1) may include seating portions (121 to 126, 121 'to 126'). The housing (HA1) may include a plurality of seating portions (121 to 126, 121 'to 126'). The seating portion (121 to 126, 121 'to 126') can provide a base to which the light emitting unit (LP) can be attached. The plurality of seating portions (121 to 126) may be provided with a base that is constantly inclined, but the angle of the base should be perpendicular to the light emission axis (LPA) of the light emission part (LP) described above or later. Can.

  The distance of the seating portion 124 may be smaller than the distance of the seating portion 125 at the seating portion 124 in the first light receiving portion (LR1). The distance of the seating portion 126 at the seating portion 125 can be greater than the distance of the seating portion 125 at the seating portion 124.

  The inclination of the seating part 126 can be larger than the inclination of the seating part 125, and the inclination of the seating part 125 may be larger than the inclination of the seating part 124. That is, the inclination of the seating portion (121 to 126, 121 'to 126') can be larger as it is farther from the first light receiving portion (LR1) or the second light receiving portion (LR2).

  The seating portion 126 may form a V shape as a whole with the seating portion 121 ′. The slope of these or these bases can be the same. The light emitting part (LP) can be placed or mounted on the seating parts (121 to 126, 121 'to 126').

  As shown in FIGS. 11 and 12, in the first set (Set1), the plurality of light emitting units (LP) may include an eleventh light emitting unit (LP11) to a sixteenth light emitting unit (LP16). An eleventh light emitting unit LP11 to a thirteenth light emitting unit LP13 may be disposed at one side of the first light receiving unit LR1, and a fourteenth light emitting unit LP14 to a sixteenth light emitting unit LP16. Can be disposed on the other side of the first light receiver (LR1).

  In the second set (Set2), the plurality of light emitting units LP may include a 21st light emitting unit LP21 to a 26th light emitting unit LP26. The twenty-first to twenty-third light emitting units LP21 to LP23 may be disposed at one side of the second light receiving unit LR2, and the twenty-fourth to twenty-fourth light emitting units LP24 to 26 light emitting units LP26 may be disposed. Can be disposed on the other side of the second light receiving unit LR2.

  Referring to FIGS. 12 and 13, the 21st light emitting unit (LP21) may have a light range (LS21) or an irradiation angle in which the 12th glass 12 to the 14th glass 14 can be detected.

  The twenty-first light emitting unit (LP21) may be disposed between the fifteenth light emitting unit (LP15) and the sixteenth light emitting unit (LP16). The optical axis of the 21st light emitting part (LP21) may intersect with the optical axis of the 16th light emitting part (LP16).

  The twenty-second light emitting unit (LP22) has a light range (LS22) or an irradiation angle capable of detecting the fourteenth glass 14 and / or the fifteenth glass 15, and detecting the fourteenth glass 14 to the sixteenth glass 16 be able to.

  A sixteenth light emitting unit (LP16) may be disposed between the twenty-first light emitting unit (LP21) and the twenty-second light emitting unit (LP22).

  The twenty-third light emitting unit LP23 may have a light range LS23 or an irradiation angle in which the fifteenth to fifteenth glasses 17 to 17 can be detected.

  The twenty-fourth light emitting unit LP24 may have a light range LS24 or an irradiation angle in which the seventeenth to seventeenth glasses 17 to 19 can be detected.

  The twenty-fifth light emitting unit (LP25) has a light range (LS25) or an irradiation angle that can detect the nineteenth glass 19 and / or the twentieth glass 20, and can detect the eighteenth through eighteenth glasses 20 to 20. be able to.

  The twenty-sixth light emitting unit (LP26) may have a light range (LS26) or an irradiation angle in which the twentieth glass 20 to the twenty-second glass 22 can be detected.

  The reflective image detection sensor 120 may detect the first to 22nd glasses 22 by superimposing a part of the eleventh to 26th light ranges LS11 to LS26 with each other.

  Thus, the first to eleventh glasses 11 loaded in the slot of the loading device 110 can be accurately detected without falling off.

  The overlapping range in which the twelfth light range (LS12) and the thirteenth light range (LS13) are superimposed may be wider than the overlapping range in which the eleventh light range (LS11) and the twelfth light range (LS12) are superimposed. That is, the overlapping light range can be wider as it approaches the first light receiving unit (LR1).

  Alternatively, the overlapping range in which the 22nd light range (LS22) and the 23rd light range (LS23) are superimposed can be wider than the overlapping range in which the 21st light range (LS21) and the 22nd light range (LS22) are superimposed . That is, the overlapping light range can be wider as it approaches the second light receiving unit (LR2).

  The 13th light emission range (LS13) and 14th light emission range (LS14) arrange | positioned at both sides of a 1st light-receiving part (LR1) are mutually arrange | positioned, and it arrange | positions in the area | region corresponding to a 1st light-receiving part (LR1). The fifth to seventh glasses 5 to 7 can be accurately detected.

  By overlapping the 23rd light range (LS23) and the 24th light range (LS24) arranged on both sides of the second light receiving unit (LR2), the second light receiving unit (LR2) is arranged in a region corresponding to the second light receiving unit (LR2). The 16th to 16th glasses 18 to 18 can be accurately detected.

  As shown in FIG. 14, when the optical axes of the 16th light emitting part (LP16) of the first set (Set1) and the 21st light emitting part (LP21) of the second set (Set2) do not intersect each other, a blind spot (BS) Can occur.

  Thus, if there is a blind spot (BS), the detection sensor 120 cannot detect the glass 111 for manufacturing a display (Glass, 111) arranged in the blind spot (BS).

  In order to eliminate the dead zone (BS) described above, the reflective image detection sensor 120 may be configured to set a second set (15) between the fifteenth light emitting part (LP15) and the sixteenth light emitting part (LP16) of the first set (Set1). The 21st light emitting unit (LP21) of Set 2) is disposed, and the 16th light emission of the first set (Set1) is provided between the 21st light emitting unit (LP21) and the 22nd light emitting unit (LP22) of the second set (Set2) Part (LP16) can be arranged.

  The reflection type image detection sensor 120 is disposed by intersecting the optical axes of the sixteenth light emitting unit (LP16) of the first set (Set1) and the twenty first light emitting unit (LP21) of the second set (Set2) with each other. The blind spot zone (BS) in the boundary region between the first set (Set1) and the second set (Set2) can be removed.

  Thereby, the reflection type image detection sensor 120 can accurately detect the display manufacturing glass 111 (Glass, 111) stacked in the slot of the stacking device 110 without dropping.

  Further, even if the display manufacturing glass 111 loaded in the slot of the stacking device 110 is bent or not accurately arranged in the slot, the display manufacturing glass 111 can be detected more accurately.

  (A) of FIG. 15 displays an image when the light emitting axis (LPA) and the light receiving axis (LRA) are horizontal as shown in FIG. 5A. If the light emitting axis (LPA) and the light receiving axis (LRA) are parallel, background light other than the glass substrate may be generated.

  Background light may not only accurately detect the side surface or edge surface of the display manufacturing glass 111, but also may not read it.

  (B) of FIG. 15 shows an image when the light receiving axis (LRA) is inclined at a certain angle as shown in FIG. 5B. The side surface or edge surface of the display manufacturing glass 111 stacked in the slot of the loading device 110 can be detected more accurately.

  Referring to FIGS. 16-18, the detection sensor 120 may be spaced apart from the loading device 110 by a predetermined distance (SD). The detection sensor 120 may change the tilt angle of the light emitting unit (LP) based on a distance (SD) that is separated from the loading device 110.

  Referring to FIG. 16, the detection sensor 120 may be spaced apart from the loading device 110 by a first separation distance SD1. The detection sensor 120 may include a first light emitting unit LP1 to a sixth light emitting unit LP6. The first to third light emitting parts LP1 to LP3 are disposed at one side of the light receiving part LR, and the fourth to sixth light emitting parts LP4 to LP6 are parts of the light receiving part LR. Can be placed on the other side.

  Here, the tilt angle can be defined as an angle formed by the light emitting axis (LPA) and the light receiving portion (LRA).

  The first light emitting unit (LP1) may have an eleventh tilt angle (a11). The second light emitting unit (LP2) may have a twelfth tilt angle (a12) smaller than the eleventh tilt angle (a11). The third light emitting unit LP3 may have a thirteenth tilt angle a13 smaller than the twelfth tilt angle a12.

  The fourth light emitting unit (LP4) may have a fourteenth tilt angle (a14). The 14th tilt angle (a14) has the same absolute value as the 13th tilt angle (a13), and can be symmetric based on the light receiving axis (LRA). The fifth light emitting unit (LP5) may have a fifteenth tilt angle (a15). The fifteenth tilt angle (a15) has the same absolute value as the twelfth tilt angle (a12), and can be symmetric based on the light receiving axis (LRA). The sixth light emitting unit (LP16) may have a sixteenth tilt angle (a16). The 16th tilt angle (a16) has the same absolute value as the 11th tilt angle (a11) and can be symmetric based on the light receiving axis (LRA).

  Referring to FIG. 17, the detection sensor 120 may be spaced apart from the loading device 110 by a second separation distance SD2. The detection sensor 120 may include a first light emitting unit LP1 to a sixth light emitting unit LP6. The first to third light emitting parts LP1 to LP3 are disposed at one side of the light receiving part LR, and the fourth to sixth light emitting parts LP4 to LP6 are parts of the light receiving part LR. Can be placed on the other side.

  The first separation distance (SD1: see FIG. 16) can be longer than the second separation distance (SD2). The 21st tilt angle (a21) corresponds to the 11th tilt angle (a11: FIG. 16), and can be larger than the 11th tilt angle (a11). The twenty-second tilt angle (a22) corresponds to the twelfth tilt angle (a12: FIG. 16), and can be larger than the twelfth tilt angle (a12). The twenty-third tilt angle (a23) corresponds to the thirteenth tilt angle (a13), and can be larger than the thirteenth tilt angle (a13).

  Referring to FIG. 18, the detection sensor 120 may be spaced apart from the loading device 110 by a third separation distance (SD3). The detection sensor 120 may include a first light emitting unit LP1 to a sixth light emitting unit LP6. The first to third light emitting parts LP1 to LP3 are disposed at one side of the light receiving part LR, and the fourth to sixth light emitting parts LP4 to LP6 are parts of the light receiving part LR. Can be placed on the other side.

  The first light emitting unit (LP1) may have a 31st tilt angle (a31). The second light emitting unit (LP2) may have a 32nd tilt angle (a32) smaller than the 31st tilt angle (a31). The third light emitting unit (LP3) may have a 33rd tilt angle (a33) smaller than the 32nd tilt angle (a32). Here, the 31st to 33rd tilt angles (a31) to (33) can be defined as angles formed by the light emitting axis (LPA) of the light emitting unit (LP) with the light receiving axis (LRA).

  The fourth light emitting unit (LP4) may have a 34th tilt angle (a34). The 34th tilt angle (a34) has the same absolute value as the 33rd tilt angle (a33), and can be made symmetric based on the light receiving axis (LRA). The fifth light emitting unit (LP5) may have a 35th tilt angle (a35). The 35th tilt angle (a35) has the same absolute value as the 32nd tilt angle (a32), and can be made symmetric based on the light receiving axis (LRA). The sixth light emitting unit (LP6) may have a thirty-sixth tilt angle (a36). The 36th tilt angle (a36) has the same absolute value as the 31st tilt angle (a31), and can be symmetric based on the light receiving axis (LRA).

  Referring to FIGS. 17 and 18, the second separation distance (SD2) may be longer than the third separation distance (SD3). The 31st tilt angle (a31) corresponds to the 21st tilt angle (a21) and can be larger than the 21st tilt angle (a21). The thirty-second tilt angle (a32) corresponds to the twenty-second tilt angle (a22) and can be larger than the twenty-second tilt angle (a22). The thirty-third tilt angle (a33) corresponds to the twenty-third tilt angle (a23) and can be larger than the twenty-third tilt angle (a23).

  The detection sensor 120 can change the tilt angle of the light emitting unit (LP) according to the separation distance (SD) with respect to the loading device 110. That is, as the distance between the detection sensor 120 and the loading device 110 decreases, the tilt angle of the light emitting unit (LP) may increase.

  In addition, the detection sensor 120 can change the tilt angle of the light emitting unit (LP) according to the interval between the light emitting unit (LP) and the light receiving unit (LR). That is, as the distance between the light emitting unit (LP) and the light receiving unit (LR) increases in the detection sensor 120, the tilt angle of the light emitting unit (LP) may be larger.

  For example, when SD2 = 80 to 90 mm, the values of W, W1, W2, and W3 and angles (a21 to a26) described with reference to FIG. 3 can be provided.

  As another example, when SD1 = 105 mm, W1 = 32 mm, W2 = 40 mm, W3 = 53 mm, a11 = about 20 degrees, a12 = about 10 degrees, a13 = about 5 degrees.

  As another example, when SD3 = 55 mm, W1 = 32 mm, W2 = 40 mm, W3 = 53 mm, a31 = about 25 degrees, a32 = about 15 degrees, a33 = about 10 degrees.

  That is, a11, a21, a31 can change in the range of 20 to 25 degrees according to the distance (SD1, SD2, SD3), and a12, a22, a32 correspond to the distance (SD1, SD2, SD3) It can change in the range of 10-15 degrees, and a13, a23, a33 can change in the range of 5-10 degrees according to the distance (SD1, SD2, SD3).

  As described above, the detection sensor 120 according to the embodiment of the present invention corresponds to the light emitting unit corresponding to the distance between the loading device 110 and the separation distance (SD) or the light receiving unit (LR) and the light emitting unit (LP). By changing the tilt angle of (LP), detection can be performed more accurately and the detection area can be expanded.

  Referring to FIG. 19, the relationship between the input or output signal of the image sensor and the number of pixels is shown. The vertical direction can indicate input or output (Power, W), and the horizontal direction can indicate the number of pixels (Pixel Number). In FIG. 19, the effect of the reflective image detection sensor 120 described with reference to FIG. 15 can be seen in a quantitative graph.

  Referring to FIG. 20, the reflective image detection sensor 120 may include a flexible cable (CA). (A) of FIG. 20 shows the flexible cable (CA) in a perspective view, and (b) of FIG. 20 shows the second surface (CA2) of the flexible cable (CA).

  The flexible cable (CA) may include a first surface (CA1) having a certain width and length and a second surface (CA2) separated from the first surface (CA1).

  The tip of the flexible cable (CA) can be electrically connected to the PCB of the detection sensor 120 that can control the detection sensor 120 as a whole, or can be electrically connected to the main control unit 130.

  At least one module PCB may be disposed between the tip of the flexible cable CA and the PCB of the detection sensor 120 and between the tip of the flexible cable CA and the main control unit 130.

  Between the first surface (CA1) and the second surface (CA2) of the flexible cable (CA), a material having good conductivity can be disposed in at least one electric line. The first surface (CA1) and the second surface (CA2) of the flexible cable (CA) may include an insulating material (a) capable of insulating an electric line. The first surface (CA1) and the second surface (CA2) of the flexible cable (CA) may be disposed to surround the electrical line.

  The second surface (CA2) of the flexible cable (CA) can include an open surface (b) that can open the electrical line to the outside. The open surface (b) may have a width and a predetermined length substantially the same as the width of the flexible cable (CA). A plurality of open surfaces (b) can be disposed on the second surface (CA2) of the flexible cable (CA). The plurality of open faces (b) can be arranged maintaining a constant spacing.

  The open surface (b) can be fastened to a plurality of light emitting units (LP) or light receiving units (LR) by bending (banding) the central region. A detailed description of this will be described in detail in FIGS. 21-23.

  Referring to FIG. 21, the flexible cable (CA) is shown before bending. Openings (b) at regular intervals may be disposed on the second surface (CA2) of the flexible cable (CA). The open surface (b) can open at least one or more electrical lines to the outside.

  The plurality of light emitting units LP may be spaced apart from the second surface CA2 of the flexible cable CA. In FIG. 21, one light emitting unit (LP) will be mainly described.

  Referring to FIG. 22, the flexible cable CA is bent and inserted into the light emitting unit LP. The open surface (b) of the flexible cable (CA) may be bent around a central line which is an intermediate region between one end and the other end. That is, the open face (b) can be folded into a shape like a "bowl" or a "bowl". The open surface (b) having a shape like “∨” or “∧” can be folded so as to be inserted into the light emitting part (LP) and fastened.

  Referring to FIG. 23, the flexible cable (CA) is bent, inserted into the light emitting unit (LP), and fastened. The flexible cable (CA) and the light emitting unit (LP) can be electrically connected by inserting the bent open surface (b) into the inside of the light emitting unit (LP) and fastening it.

  As described above, the flexible cable (CA) bends the open surface (b) of the second surface (CA2) and is inserted into the light emitting unit (LP), whereby the light emitting unit (LP) or the light receiving unit (LR). Can be easily tightened or separated.

  Further, the flexible cable (CA) bends the open surface (b) of the second surface (CA2) and is inserted into the light emitting unit (LP), thereby fastening the flexible cable (CA) and the light emitting unit (LP). The process can be simplified. For example, one of the steps of fastening the flexible cable (CA) and the light emitting unit (LP) can be eliminated, which is a soldering step.

  Further, whether or not the flexible cable (CA) and the light emitting unit (LP) are fastened can be easily distinguished with the naked eye, and the product defect rate can be reduced and the product inspection time can be further shortened. .

  Referring to FIG. 24, a plurality of light emitting units (LP) may be disposed on the flexible cable (CA) at a predetermined interval.

  The open surfaces (b: see FIG. 23) of the plurality of flexible cables (CA) can be inserted into the bottoms of the plurality of light emitting units (LP) by bending. The plurality of light emitting units LP may be sequentially fastened by inserting the open surface b of the flexible cable CA into the bottom.

  The plurality of light emitting units LP may include a first light emitting unit LP to a sixth light emitting unit LP. The first light emitting unit LP to the sixth light emitting unit LP are fastened to the open surface b of the flexible cable CA, but may be separated by substantially the same distance. For example, the distance (D1) between the second light emitting part (LP) and the third light emitting part (LP) is the distance (D2) between the third light emitting part (LP) and the fourth light emitting part (LP). Can be almost identical.

  Looking carefully at FIG. 25, the first light emitting part (LP1) to the third light emitting part (LP3) are fastened to the open surface (b: see FIG. 23) of the flexible cable (CA). Can be separated by The module fixing units CV1 and CV2 may be disposed between the first light emitting unit LP1 to the third light emitting unit LP3.

  The module fixing unit CV may include a first module fixing unit CV1 and a second module fixing unit CV2. The first module fixing part (CV1) may be disposed between the first light emitting part (LP1) and the second light emitting part (LP2). The second module fixing unit CV2 may be disposed between the second light emitting unit LP2 and the third light emitting unit LP3.

  The first module fixing part (CV1) is fastened to one side of the first light emitting part (LP1) and the other side of the second light emitting part (LP2), and the first light emitting part (LP1) and the second light emitting part (LP2). These can be fixed while maintaining the distance between them. The second module fixing part (CV2) is fastened to one side of the second light emitting part (LP2) and the other side of the third light emitting part (LP3), and the second light emitting part (LP2) and the third light emitting part (LP3). These can be fixed while maintaining the distance between them.

  The first module fixing part CV1 and the second module fixing part CV2 may have a smaller width than the width of the light emitting part LP, and may have a width substantially equal to or larger than the width of the flexible cable CA. Can have.

  The first module fixing part (CV1) and the second module fixing part (CV2) are arranged long in the length direction of the cable (CA) and may have different lengths. For example, the first module fixing part (CV1) may have a shorter length than the second module fixing part (CV2). In addition, the distance between the first light emitting unit LP1 and the second light emitting unit LP2 can be shorter than the distance between the second light emitting unit LP2 and the third light emitting unit LP3.

  26, a part of the light emitting units (LP) of the reflective image detection sensor 120 configured by the first set (Set1) and the second set (Set2) shown in FIG. 12 will be described. To

  Referring to FIG. 26, the fourteenth light emitting unit (LP14), the fifteenth light emitting unit (LP15), the twenty-first light emitting unit (LP21), and the sixteenth light emitting unit (LP16) are open surfaces (b) of the flexible cable (CA). But can be spaced apart at other intervals.

  A first module fixing unit (CV1) is disposed between the fourteenth light emitting unit (LP14) and the fifteenth light emitting unit (LP15), and between the fifteenth light emitting unit (LP15) and the twenty first light emitting unit (LP21) The second module fixing unit CV2 may be disposed, and the third module fixing unit CV3 may be disposed between the 21st light emitting unit LP21 and the 16th light emitting unit LP16. .

  The length of the first module fixing part (CV1) may be longer than the length of the second module fixing part (CV2), and the length of the second module fixing part (CV2) may be longer than the third module fixing part (CV3) ) May be longer than

  A plurality of light emitting units (LP) are fastened to the open surface (b) of the flexible cable (CA) at a constant interval, and the module fixing unit (CV) is used to make the distance between the light emitting units (LP) different. can do. By being configured in this way, it can be easily applied to various products.

  Any embodiment or other embodiments of the invention described above are not mutually exclusive or distinguishable. The configuration or function of any of the embodiments of the present invention or other embodiments described above may be used in combination or combination.

  The above detailed description should not be construed as limiting in all aspects and should be considered exemplary. The scope of the invention should be determined by reasonable interpretation of the appended claims, and all changes that come within the equivalent scope of the invention are included in the scope of the invention.

Claims (14)

A housing;
A light receiving portion installed in the housing;
A plurality of light emitting portions provided on the housing along one direction of the housing;
The plurality of light emitting units are:
A first group of light emitting units located adjacent to one side of the light receiving unit;
And a light emitting unit of a second group located adjacent to the other side of the light receiving unit and symmetrical to the light emitting unit of the first group centering on the light receiving unit;
The light receiving unit is
A light receiving shaft extending outside the housing in the housing;
The plurality of light emitting units are:
Each have a plurality of light-emitting axis intersecting the light axis,
The light emitting units of the first group are
A first light emitting unit ;
Including a second light emitting unit positioned between the first light emitting unit and the light receiving unit ;
The first light emitting unit has a first light emitting axis ;
The second light emitting unit has a second light emitting axis ,
The angle formed by the first light emitting axis and the light receiving axis is
A reflective image detection sensor having a larger angle than the angle formed between the second light emitting axis and the light receiving axis . Wherein the first light emitting portion interval of the second light emitting portion is larger than a distance between the light receiving portion and the second light emitting unit, the reflection-type image sensor according to claim 1.   The reflective image detection sensor according to claim 1, wherein the light receiving axis is inclined from a normal of one direction of the housing. The plurality of light emitting units are aligned in a line along one direction of the housing,
The reflective image detection sensor according to claim 1, wherein the light receiving unit is out of the line. The light receiving unit is
An image sensor placed on the light receiving axis;
A slit formed on the light receiving axis;
The reflective image detection sensor according to claim 1, further comprising a lens positioned between the image sensor and the slit. The light receiving unit is
The reflective image detection sensor according to claim 5 , further comprising a filter positioned between the lens and the image sensor. The housing is
The reflective image detection sensor according to claim 5 , further comprising a partition wall formed around the slit. The partition is
The reflective image detection sensor according to claim 7 , wherein the reflective image detection sensor protrudes from the front surface of the light receiving unit and surrounds the periphery of the slit. The partition is
A first part spaced apart from the slit, extending along the longitudinal direction of the slit, and located above the slit;
A second part spaced apart from the slit, extending along the longitudinal direction of the slit, and located below the slit;
A third part extending from one end of the first part to one end of the second part;
The reflective image detection sensor according to claim 7 , wherein a distance from the slit to the first part or the second part is smaller than a distance from the slit to the third part. The light emitting unit
A light emitting element placed on the light emitting axis;
A lens positioned on the light emitting axis;
The reflective image detection sensor according to claim 1, further comprising a slit formed between the light emitting element and the lens. A first light receiving portion provided in the housing;
A second light receiving portion provided apart from the first light receiving portion;
A plurality of light emitting units sequentially installed from the first light receiving unit to the second light receiving unit;
At least one of the plurality of light emitting units has a light emitting axis that intersects a light receiving axis of the first light receiving unit,
The reflective image detection sensor according to claim 1, wherein at least another one of the plurality of light emitting units has a light emitting axis that intersects the light receiving axis of the second light receiving unit. At least one of the plurality of light emitting units having a light emitting axis that intersects the light receiving axis of the first light receiving unit is:
The reflective image detection sensor according to claim 11 , wherein the second light receiving unit is closer to the second light receiving unit than at least one of the plurality of light emitting units having a light emitting axis intersecting the light receiving axis of the second light receiving unit. The housing is
Including a plurality of seats on which the plurality of light emitting units are placed;
The plurality of seating portions are:
A first group of seats positioned adjacent to one side of the light receiving unit;
And a second group seating section located adjacent to the other side of the light receiving section and symmetrical to the first group seating section centered on the light receiving section,
Any one of the first group of seats may be:
The reflective image detection sensor according to claim 1, further comprising another seating portion and another slope of the seating portion of the first group. The seating part of the first group is
The reflective image detection sensor according to claim 13 , wherein distances between the respective seating parts are different from each other.