JP2007057861A - Optical system for condensing light in square pattern and uv ray irradiation apparatus for liquid crystal panel - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To provide an optical system for condensing light in a square pattern, the system that irradiates a square part with light at high illuminance and uniformity, that is in a small size with high irradiation efficiency, and to provide a UV ray irradiation apparatus for a liquid crystal panel using the optical system. <P>SOLUTION: The optical system 10 for condensing light in a square pattern comprises at least two condensing units 20 for straight lines, each unit having a rod lens 1 and a plurality of light emitting diodes 2 and the light emitting diodes arranged close to the rod lens and along the longitudinal direction or the lens, and at least one condensing unit 30 for a corner comprising four optical modules 31 assembled into a cross form, each module having a cylindrical lens 3 and a plurality of light emitting diodes 4 and the light emitting diodes arranged closed to the cylindrical lens and along the longitudinal direction of the lens, wherein a pair of condensing units 20 for straight lines are placed in intersecting directions over one condensing unit 30 for a corner. <P>COPYRIGHT: (C)2007,JPO&INPIT

Description

  The present invention relates to an angular condensing optical system that condenses light with a high degree of uniformity at an angular portion where two straight portions share a corner, and an ultraviolet irradiation apparatus for a liquid crystal panel using the same.

  The liquid crystal display panel is a sealing plan for an unsealed liquid crystal panel in which a liquid crystal material is sandwiched between a pair of glass substrates on which transparent electrodes are formed, and an ultraviolet curable resin is applied to a peripheral rectangular sealing portion. The part is sealed by irradiating the part with ultraviolet light to cure the ultraviolet curable resin. In the sealing process of the liquid crystal display panel, an ultraviolet curable resin is dropped in advance between the peripheral portions of a pair of glass substrates constituting both surfaces of the unsealed liquid crystal panel, and the ultraviolet curable resin is cured by irradiating UV light from above the glass substrate. Let A conventional ultraviolet irradiating device for a liquid crystal panel for doing this irradiates the entire surface of a pair of glass substrates with ultraviolet rays generated from an ultraviolet light source such as an ultraviolet discharge lamp with a predetermined range of high illuminance and high uniformity. (For example, refer to Patent Document 1).

  In the conventional ultraviolet irradiation apparatus for liquid crystal panels described above, since ultraviolet rays are also irradiated to the central portion of the glass substrate that does not require ultraviolet irradiation, there is a problem that the irradiation efficiency of ultraviolet rays is low and wasteful power consumption increases. In addition, when an ultraviolet discharge lamp is used as the ultraviolet light source, it is necessary to perform water cooling, so that there is a problem that the ultraviolet irradiation device becomes complicated and becomes large.

JP 2001-154202 A

  On the other hand, the present inventor can condense the light emission of the light emitting diode on the linear portion of the light irradiation unit by using a linear condensing system comprising a light emitting diode and a rod lens. The inventors focused on the fact that if the linear condensing system is combined in a cross pattern on a plane, the light can be condensed along a quadrangular outline.

  In addition, the reason for combining the above-mentioned condensing systems in a cross-beam shape is as follows. That is, if the light condensing system has a finite length, the irradiance in a region facing both end regions of the light condensing system decreases, so the condensing system is located outside the predetermined irradiation region. Should be extended in both directions. Therefore, in this case, the extension part of the light condensing system is positioned further outward from the quadrangular outline, and as a result, the light condensing system for uniformly condensing on the quadrangular outline becomes a cross beam.

  However, in the case of a condensing system in which rod lenses are combined in a cross beam shape, high illuminance can be obtained, but the irradiance at the corners of the quadrangle at the light irradiation position becomes extremely large, and over the straight line and corners of the quadrangle. It was found that there was a problem that light irradiation could not be performed with a high degree of irradiance. In resin curing by ultraviolet irradiation, a desired curing action cannot be obtained even if the illuminance is higher than a predetermined range. Therefore, it is important that the ultraviolet irradiation has a high degree of uniformity.

  As a result of an investigation by the present inventor, in a linear condensing system composed of a light emitting diode and a rod lens, the condensing action by a pair of adjacent linear portions contributes to the corners, and the corners are irradiated. It has been found that the cause is that the irradiance is extremely increased due to the addition of light.

  The present invention relates to a rectangular condensing optical system that irradiates light with a high illuminance and a high degree of uniformity to a rectangular portion, and has a high irradiation efficiency, and an ultraviolet irradiation device for a liquid crystal panel using the same. The purpose is to provide.

  The rectangular light collecting optical system of the present invention includes a rod lens and a plurality of light emitting diodes, and the light emitting diodes are close to the rod lens and arranged along the length direction thereof. A condensing unit for use; each comprising a cylindrical lens and a plurality of light emitting diodes, wherein the light emitting diodes are close to the cylindrical lens and are arranged along the length direction of the four optical modules combined in a cross shape. At least one corner light collecting unit; and a pair of straight line light collecting units are arranged in an intersecting direction with one corner light collecting unit interposed therebetween.

  In addition, the ultraviolet irradiation device for a liquid crystal panel of the present invention includes an ultraviolet irradiation device main body for a liquid crystal panel in which an unsealed liquid crystal panel in which an ultraviolet curable resin is applied to a rectangular seal planned portion is disposed in the ultraviolet light irradiation portion; 2. The rectangular light condensing optical system according to claim 1, wherein each of the four light condensing units and the light condensing unit for the corner portion are alternately arranged. A quadrangular condensing optical system configured to form a quadrangular ultraviolet condensing pattern on the ultraviolet light irradiation portion of the main body.

  According to the present invention, the light emitted from the light emitting diode can be irradiated to the angular portion of the light irradiation portion with high illuminance and light with high degree of uniformity, and light irradiation with high irradiation efficiency can be performed. A miniaturized rectangular light collecting optical system and an ultraviolet irradiation apparatus for a liquid crystal panel using the same can be provided.

  Hereinafter, embodiments for carrying out the present invention will be described with reference to the drawings.

    FIG. 1 to FIG. 3 show one embodiment for carrying out the rectangular condensing optical system of the present invention, FIG. 1 is a partially cut bottom view, FIG. 2 is a partially cut front view, and FIG. FIG.

  In this embodiment, the rectangular light collecting optical system 10 includes at least two straight line light collecting units 20 and 20 and at least one corner light collecting unit 30, and is L-shaped as a whole. It arrange | positions so that the square shape 11, such as, may be formed.

  The square shape 11 includes at least a pair of straight portions 12 and 12 and one corner portion 13. Each of the straight line portions 12 is formed by a straight line light collecting unit 20 and an optical module 31 of a corner light collecting unit 30 described later. The corner 13 is formed by a cross-shaped central portion formed by the four optical modules 31 of the corner light collecting unit 30. In addition, the angle which a pair of linear part 12 and 12 forms on both sides of the corner | angular part 13 makes a desired value, for example, a right angle. However, the angle is not limited to a right angle, but may be an acute angle or an obtuse angle as desired.

  The straight line condensing unit 20 is in charge of the light condensing action mainly in the intermediate portion of the straight portion 12 of the rectangular shape 11. A rod lens 1 and a plurality of light emitting diodes 2 are provided.

  The rod lens 1 is a rod-shaped lens having a circular cross section and extending along the center axis of the circle. The diameter and the axial length of the rod lens 1 can be selected as appropriate. When the rod lens 1 has a predetermined finite length, the whole may be constituted by a single rod lens having the finite length, or may be divided into a plurality in the length direction as desired. Also good. In the latter case, the divided rod lenses may be arranged so as to be adjacent to each other, or may be arranged at an appropriate distance.

  The plurality of light emitting diodes 2 are arranged such that the light emitting surfaces thereof are close to, for example, in contact with the rod lens 1 and are preferably aligned along the length direction thereof. The arrangement pitch of the light emitting diodes 2 is linearly condensed in the light irradiation unit along the length direction of the linear unit condensing unit 10 to obtain high-radiance radiation with a high degree of uniformity to a desired degree. Is set to be.

  The form of the light-emitting diode 2 is not particularly limited, but a light-emitting diode 2 having a chip shape for surface mounting is suitable for downsizing the rectangular light collecting optical system 10. Furthermore, the wavelength band of light emitted from the light emitting diode 2 is not particularly limited, but is allowed to radiate in a wavelength band such as ultraviolet light, visible light, or infrared light. In addition, when using it for the ultraviolet irradiation apparatus for liquid crystal panels, the thing of an ultraviolet light emission type is used.

  The rod lens 1 and the light emitting diode 2 may be arranged so that the light emitted from the light emitting diode 2 is incident on the rod lens 1 as much as possible, and the remaining configuration is not particularly limited. It is convenient for handling that it is made.

  The corner light collecting unit 30 is configured by combining four optical modules 31 in a cross shape. Each of the optical modules 31 includes a cylindrical lens 3 and a plurality of light emitting diodes 4. The light emitting diodes 4 approach the cylindrical lens 3 and are arranged along the length direction thereof.

  As shown in FIG. 1, the center portions of the four optical modules 31 combined in a cross shape each have a pointed end with an angle of 90 ° and are closely adjacent to each other. The light emitting diode 4 can be arranged avoiding the central portion of the four optical modules 31. However, if desired, the light emitting diode 4 can be arranged in the central portion.

  As the cylindrical lens 3, as shown in FIG. 3, it is preferable to use a lens having a flat light incident surface and a cylindrical light emitting surface. The lower end portion of the light exit surface is preferably aligned with the lower end portion of the rod lens 1 of the linear portion condensing unit 20 at the same level.

  The light emitting diode 4 is disposed close to, preferably in contact with, the light incident surface of the cylindrical lens 3. Further, the light emitting diode 4 having the same specification as that of the light emitting diode 2 of the linear portion condensing unit 20 can be used. However, the arrangement pitch of the light emitting diodes 4 can be set appropriately in order to obtain a high degree of irradiance in the light irradiating portions facing each other over the entire length of the linear portion 12 of the square shape 11. In the illustrated embodiment, the pitch of the arrangement of the light emitting diodes 4 in the corner portion condensing unit 30 is smaller than that in the linear portion condensing unit 20.

  In FIG. 1 and FIG. 2, reference numeral 5 is disposed in the corner light collecting unit 30 and is used as a support for the corner light collecting unit 30.

  In the present invention, the number of the linear portion condensing units 20 is required to be at least two in order to obtain an angular condensing optical system having an angular shape 11 having at least one corner portion 13. Because. In this case, when it is desired to obtain uniform irradiance at the outer end of the straight portion 12, that is, the end opposite to the corner 13 side, the corner condensing unit 30 is also provided at the outer end. can do.

  However, according to the present invention, an angular condensing optical system having an angular shape having two or more corner portions 13 can be obtained. For example, it is possible to obtain an angular condensing optical system having an angular shape having two corner portions 13, and thus a portal shape. In this case, three straight line condensing units 20 and at least two corner condensing units 30 are alternately arranged. If desired, for the same reason as described above, one corner portion condensing unit 30 can be disposed at each outer end of the linear portion condensing unit 20 located on both sides of the gate shape. According to the angular condensing optical system having such a configuration, a gate-shaped condensing pattern can be obtained.

  Furthermore, according to the present invention, it is possible to obtain a rectangular condensing optical system having four corner portions 13 and thus a square shape. In this case, the four straight line condensing units 20 and the four corner condensing units 30 are alternately arranged so as to form square sides and corners. The angular condensing optical system having such a configuration is in a cross-beam shape, and a rectangular condensing pattern can be obtained in the light irradiation section.

    FIGS. 4 to 6 schematically illustrate the irradiance distribution in the light irradiator when using one embodiment for implementing the rectangular light collecting optical system of the present invention. FIG. 5 is a graph showing the irradiance distribution at a position facing the straight line portion in FIG. 5, FIG. 5 is a graph showing the irradiance distribution in the case of the single linear portion condensing unit, and FIG. 6 is the irradiance in the case of the single corner condensing unit. It is a graph which shows distribution.

  In this embodiment, the irradiance distribution in the light irradiating part facing the straight line part 12 in the square shape 11 is as shown in FIG. That is, the irradiance distribution between the both end positions P0 to P3 of the straight line portion 12 has a high degree of uniformity, and since the light is condensed linearly, high illuminance can be obtained. The position P0 of the light irradiation part facing one end of the straight line part 12 is the central part of the four optical modules 31 of the corner light collecting unit 30, and at the same time, the intersection of the pair of straight line parts 12 and 12, Therefore, it is an end. Although not shown in FIG. 1 and FIG. 2 at the position P3 of the light irradiating portion facing the other end of the straight portion 12, the same angle as at the position P0 facing the one end is shown. A partial light collecting unit 30 is provided.

  The irradiance distribution shown in FIG. 4 includes the irradiance distribution by the straight line condensing unit 20 and the irradiance distribution by the pair of corner condensing units 30 disposed at both ends of the straight line condensing unit 20. Is obtained by synthesis. Next, the irradiance distribution when each is independent will be described with reference to FIGS.

  The irradiance distribution in the case of the straight line condensing unit 20 alone is as shown by the solid line in FIG. The position P <b> 1 in the horizontal axis direction in the figure is the position of the light irradiation unit facing the end of the linear-portion condensing unit 20. The position P2 is located farther to the center side than the position P1 facing the end of the straight line condensing unit 20, and a uniform illuminance in which a substantially uniform irradiance can be obtained in the region on the right side of the figure from the position P2. It becomes an area.

  Further, in the left region in the figure from the position P2, an illuminance reduction region in which the irradiance decreases from the region toward the end side. That is, the position P2 is a boundary portion between the uniform illuminance area and the illuminance reduction area.

  Furthermore, the position P0 is a position of the light irradiation unit that faces a position that is spaced apart from the end of the straight line condensing unit 20 by a predetermined distance along the axial direction. The predetermined distance corresponds to the dimension from the cross-shaped center formed by the four optical modules 31 of the corner light collecting unit 30 to the outer end of one optical module 31.

  Thus, in the case of the straight-line condensing unit 20 alone, the irradiance of the light irradiating part facing the central area is substantially uniform as shown in the right part from the position P2 in FIG. On the other hand, the irradiance at the light irradiation position facing the end region is sequentially reduced as indicated by the position P1-P2. Further, in the drawing of the straight line condensing unit 20, the irradiance at the light irradiation position facing the region extending further leftward in the axial direction from the left end is as shown in the position P0-P1. It will be further reduced following the sub-region.

  The irradiance distribution in the case of the corner light collecting unit 30 alone is as shown by the solid line in FIG. The position P0 in the horizontal axis direction in the figure is the center of the four optical modules 31. Further, the position P1 is a position of the light irradiating portion facing the outer end portion of the optical module 31, and hence the left end portion in FIG. Further, the position P2 is a position of the light irradiation unit facing a position that is separated from the outer end of the optical module 31 by a predetermined distance in the axial direction. This position P2 coincides with the position P2 described in the straight line condensing unit 20.

  Then, in the case of the corner portion light collecting unit 30 alone, the irradiance peaks at the position P0 as shown in FIG. 6 and decreases toward the position P1, and further away from the outer end of the optical module 31 in the axial direction. An irradiance distribution that reduces to the position P2 is obtained.

  As can be understood from the above description, one of the straight line condensing units 20 of the rectangular light collecting optical system 10 and the optics of the corner condensing unit 30 extending in the same direction adjacent to one end thereof. The irradiance distribution generated when each radiation from the module 31 reaches the light irradiating unit is obtained by superimposing the irradiance distribution of FIG. 5 and the irradiance distribution of FIG. It has been done. The long dotted line in FIG. 5 shows the irradiance distribution after the synthesis in the vicinity of the end of the straight portion 12 of the square shape 11, and thus the vicinity of the left end of the irradiance pattern in FIG.

    7 to 11 show a second embodiment for carrying out the rectangular light collecting optical system of the present invention. FIG. 7 shows a rectangular light collecting optical system, that is, a rectangular light collecting optical system. FIG. 8 is a graph showing the irradiance distribution at a position facing the straight line portion in the quadrangular shape, and FIG. 9 is a graph showing the irradiance distribution at a position facing the vicinity of the end of the straight line portion with its horizontal axis extended. FIG. 10 is a graph showing the irradiance distribution in the case of the straight line condensing unit alone, and FIG. 11 is a plane photograph of the irradiance distribution. In FIG. 7, the same parts as those in FIG.

  In this embodiment, each of the rectangular light collecting optical systems 10 ′ has four linear light collecting units 20 and corner light collecting units 30 arranged alternately to form a square-like square shape. . This rectangular light collecting optical system 10 'is suitable for an ultraviolet irradiation device for a liquid crystal panel, but is suitable for all uses for condensing light simultaneously on a rectangular portion. In addition, in FIG. 7, the code | symbol 6 has shown the planar light irradiation part.

  In this embodiment, when the irradiance distribution in the light irradiation part facing each side of the quadrangle, that is, the straight part 12 of the square shape 11, was measured, the result shown in FIG. 8 was obtained. That is, an irradiance distribution with a substantially high degree of uniformity is obtained between both end positions P0 and P4 indicated by the dotted line of the straight line portion 12. Note that some unevenness is observed in the irradiance distribution, which is considered to be mainly due to variations in the light emission characteristics of the light emitting diodes.

  Further, as shown in FIG. 9, when the irradiance distribution in the vicinity of the position P0 is expanded, the right side from the position P0 faces the straight line portion 12, and the irradiance is substantially high, It can be clearly seen that the irradiance is successively reduced in the region facing the optical module 31 located on the left side from the center of the corner condensing optical system 30 on the left side.

  Furthermore, as shown in FIG. 10, it can be seen that the irradiance distribution of the corner condensing optical system 30 alone is very similar to that in the first embodiment shown in FIG.

  Thus, according to the present embodiment, a rectangular linear light irradiation pattern LP as shown in white in FIG. 11 is obtained. That is, light irradiation can be performed only on the quadrangular frame-shaped portion at the peripheral edge of the quadrilateral, and the irradiance is high-frequency uniformity and high illuminance in both the straight and corner portions.

    12 and 13 show a first mode for carrying out the ultraviolet irradiation apparatus for a liquid crystal panel of the present invention, and FIG. 12 shows a rectangular shape for each of a plurality of unsealed liquid crystal panel portions formed on a multi-faced liquid crystal glass substrate. FIG. 13 is a perspective view showing a main part of a single rectangular condensing optical system mounted on the guide rail. FIG. .

  In this embodiment, the ultraviolet irradiating device for a liquid crystal panel includes a liquid crystal panel ultraviolet irradiating device main body 40 and a rectangular condensing optical system 10 ″.

  The liquid crystal panel ultraviolet irradiating device main body 40 includes means for disposing the unsealed liquid crystal panel 7 in which the ultraviolet curable resin is applied to the rectangular seal planned portion formed on the multi-faced liquid crystal glass substrate GP in the ultraviolet light irradiating portion. .

  The rectangular condensing optical system 10 ″ forms a rectangular ultraviolet condensing pattern on the ultraviolet light irradiation portion of the liquid crystal panel ultraviolet irradiation device main body 40 using an optical lens such as an ultraviolet light emitting diode and a rod lens. It should be noted that the configuration shown in FIG. 7 can be adopted as the rectangular condensing optical system 10 ″.

  In addition, in this embodiment, the ultraviolet irradiation device for liquid crystal panels includes a mixture of unsealed liquid crystal panels 7 having different sizes, for example, large unsealed liquid crystal panels L and small unsealed liquid crystal panels S in addition to the above-described configuration. The unsealed liquid crystal panel 7 of the multi-faced liquid crystal glass substrate LCG is configured to be collectively sealed.

  That is, the liquid crystal panel ultraviolet irradiation device main body 40 includes the guide rail 8 in addition to the above-described configuration. The guide rail 8 is arranged such that a plurality of vertical and horizontal guide rails RL and RW intersect each other in a grid shape. In the vertical guide rail RL, for example, RL1 to RL6 are in a parallel state as shown in FIG. The intervals are non-uniformly arranged corresponding to the unsealed liquid crystal panels 7 having different sizes.

  On the other hand, as shown in FIG. 12, the horizontal guide rails RW are orthogonal to each other above the vertical guide rails RL. For example, RW1 to RW6 are in a parallel state. The intervals are non-uniformly arranged corresponding to the unsealed liquid crystal panels 7 having different sizes.

  Thus, the peripheral edge of the large-size unsealed liquid crystal panel L can be surrounded by the vertical guide rails RW1 and RW3 and the horizontal guide rails RL4 and RL6. Further, the small peripheral edge portion of S can be surrounded by the vertical guide rails RW4 and RW5 and the horizontal guide rails RL5 and RL6.

  On the other hand, in addition to the above-described configuration, the quadrangular condensing optical system 10 ″ is configured such that the quadrangular size is variable corresponding to the size of the unsealed liquid crystal panel 7.

  That is, the straight line condensing unit 20 and the rectangular condensing optical system 30 are both divided into a plurality of optical blocks. The optical block 21 of the linear portion condensing unit 20 includes a metal block 21a, a wiring board 21b, a light emitting diode 21c, and a condensing lens 21d. The optical block 32 of the rectangular light collecting optical system 30 includes the same components as the optical block 21, but is divided smaller in the length direction than the optical block 21.

  Thus, since both the linear portion condensing unit 20 and the rectangular condensing optical system 30 are divided into a plurality of optical blocks, the linear portion condensing corresponds to the size of the unsealed liquid crystal panel 7. The number and interval of the optical blocks 21 and 32 of the unit 20 and the rectangular light collecting optical system 30 can be appropriately adjusted.

    FIGS. 14 to 16 show a second embodiment for implementing the ultraviolet irradiation device for a liquid crystal panel of the present invention, and FIG. 14 shows the main part of a single rectangular condensing optical system mounted on a guide rail. FIG. 15 is a front view showing the main part of the optical block on the horizontally long side of the quadrangle, a side view and a plan view, and FIG. 16 is a front view showing the main part of the optical block on the vertical side of the quadrangle. It is a figure and a top view. In addition, the same code | symbol is attached | subjected to FIG. 12 and the same part as FIG. 13, and description is abbreviate | omitted.

  The liquid crystal panel ultraviolet irradiation device of the present embodiment is the same as the first embodiment shown in FIGS. 12 and 13 in that it includes a liquid crystal panel ultraviolet irradiation device body 40 and a rectangular condensing optical system 10 ″. The moving means of the guide block 8 ′ and the optical block 21 ′ of the straight line condensing unit 20 are different.

  That is, the guide rail 8 'is the same as the first embodiment in that a plurality of vertical and horizontal guide rails are arranged so as to intersect each other in a grid shape as shown in FIG. A plurality of rails RL ′ are arranged in parallel and spaced apart at equal intervals corresponding to the peripheral portions of the pair of vertical sides of the unsealed liquid crystal panel 7, and one guide rail includes two rails. It is configured by the body being arranged at small intervals up and down.

  On the other hand, a large number of horizontal guide rails RW ′ are in a parallel state with small equal intervals so as to cover the entire surface of the unsealed liquid crystal panel 7. Then, both end portions of the horizontal guide rail RL ′ are sandwiched between two rail bodies of the vertical guide rail RL ′ so as to be movable in the vertical direction. Further, two adjacent rail bodies form one set to constitute one vertical rail.

  On the other hand, the optical block 21 ′ of the straight line condensing unit 20 has substantially the same configuration as the optical block 21 in the first embodiment, but the optical block 21 is configured to move in conjunction with the pantograph mechanism 22. Has been. The first embodiment shown in FIG. 1 and FIG. 2 can be adopted for the straight line condensing unit 20 and the rectangular condensing optical system 30.

  That is, the plurality of optical blocks 21 ′ moving in the lateral direction are adjacent to the horizontal guide rail RL ′ as shown in FIG. 15A front view, FIG. 15B side view, and FIG. While being sandwiched between two rail bodies and being movable, the pantograph mechanism 22 moves in conjunction with each other.

  The plurality of optical blocks 21 ′ moving in the vertical direction are adjacent to the vertical guide rail RW ′ as shown in FIG. 16 (a) front view, FIG. 16 (b) side view, and FIG. While being sandwiched between two rail bodies and being movable, the pantograph mechanism 22 moves in conjunction with each other.

  Thus, according to the present embodiment, it is easy to move the plurality of optical blocks 21 ′ in the horizontal direction and the vertical direction, and the pitch between the optical blocks becomes exactly equal even if the optical block 21 ′ is moved. Can be controlled.

1 is a partially cutaway bottom view of an embodiment for carrying out the rectangular light collecting optical system of the present invention. Also partially cutaway front view Similarly, an enlarged end view of the condensing unit for corners The graph which shows typically the irradiance distribution of the position facing the square-shaped linear part in the light irradiation part at the time of using one form for implementing the square-shaped condensing optical system of this invention Similarly, a graph showing the irradiance distribution in the case of a single straight line condensing unit Similarly, a graph showing the irradiance distribution in the case of a single corner light collecting unit The perspective view of the square-shaped condensing optical system of the square in the 2nd form for implementing the concentrating optical system of the present invention Similarly, a graph showing the irradiance distribution at the position facing the straight line in the quadrilateral shape Similarly, a graph showing the irradiance distribution near the end of the position facing the straight line, with the horizontal axis expanded. Similarly, a graph showing the irradiance distribution in the case of a single straight line condensing unit A plan view of the irradiance distribution For disposing a quadrangular angular condensing optical system for each of a plurality of liquid crystal panel portions formed on a multi-faceted liquid crystal glass substrate in the first embodiment for carrying out the ultraviolet irradiation device for a liquid crystal panel of the present invention Perspective view showing relationship of guide rail The principal part perspective view which shows the single square-shaped condensing optical system similarly mounted in the guide rail The perspective view which shows the principal part of the single square shape condensing optical system with which the guide rail in the 2nd form for implementing the ultraviolet irradiation device for liquid crystal panels of this invention was implemented. Similarly, a front view, a side view, and a plan view showing the main part of the optical block on the horizontally long side of the quadrangle Similarly, a front view, a side view, and a plan view showing the main part of the optical block in the rectangular vertical side

Explanation of symbols

  DESCRIPTION OF SYMBOLS 1 ... Rod lens, 2 ... Light emitting diode, 3 ... Cylindrical lens, 4 ... Light emitting diode, 5 ... Support body, 10 ... Square shape condensing optical system, 11 ... Square shape, 12 ... Linear part, 13 ... Corner part, 20 ... Condensing unit for straight part, 30 ... Condensing unit for corner part, 31 ... Optical module

Claims (2)

Each comprising a rod lens and a plurality of light emitting diodes, the light emitting diodes approaching the rod lens and arranged along the length direction thereof; and
Each includes a cylindrical lens and a plurality of light emitting diodes, and the light emitting diodes are close to the cylindrical lens, and at least one corner portion formed by combining four optical modules arranged along the length direction in a cross shape. A light collecting unit;
And a pair of straight line condensing units are arranged in a crossing direction with one corner condensing unit sandwiched therebetween. An ultraviolet irradiating device main body for a liquid crystal panel in which an unsealed liquid crystal panel in which an ultraviolet curable resin is applied to a rectangular seal planned portion is disposed in the ultraviolet light irradiating portion;
2. The rectangular condensing optical system according to claim 1, wherein the light-emitting diodes are of an ultraviolet light-emitting type, and each of the four linear portion condensing units and the corner condensing units are alternately arranged to provide ultraviolet rays for a liquid crystal panel. A quadrangular condensing optical system configured to form a quadrangular ultraviolet condensing pattern on the ultraviolet light irradiation portion of the irradiation apparatus body;
An ultraviolet irradiation device for a liquid crystal panel, comprising:

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