JP2015143732A - Optical component fixing structure - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide an optical component fixing structure for fixedly bonding an optical component such as a lens to a device casing with high accuracy.SOLUTION: An optical component having a through-hole in parallel to an optical axis is fixed between a casing wall in the casing perpendicular to a direction of the optical axis and a casing wall facing the former casing wall by double-sided adhesion using adhesive filled into the through-hole.

Description

  The present invention relates to an optical component fixing structure, and more particularly to an RGB three primary color light source module device.

  As a background art in this technical field, there is the following Patent Document 1. In this publication, “the first and second supported surfaces are provided at positions opposite to each other across the optical axis of the lens body, and the first and second supported surfaces are provided on the support portion of the optical head body. A “lens support structure” is disclosed in which it is abutted and supported, and is pressed and abutted by interposing an elastic force by an elastic member between a supported body and a support portion.

Moreover, there exists the following patent document 2 as another background art. In this publication, “a holder to which a diffractive optical element is fixed is provided so as to be linearly displaceable and rotationally displaceable with respect to the housing of the optical pickup device, and the holder is adjusted by the elastic force of a leaf spring that presses the holder against the housing. An optical element fixing structure characterized by being held in a possible state is disclosed.

JP 2000-242960 A JP 2013-186929 A

  In Patent Document 1, the protruding portion on the side surface of the lens is abutted against the U-shaped groove with a spring press, and can be adjusted to the left and right in the optical axis direction. However, because the structure is only pressed by a spring, the lens may be displaced in the optical axis direction due to vibration or impact.

  In Patent Document 2, a diffraction grating with a holder is spring-pressed in a V-shaped groove of the housing, and after adjusting the optical axis direction back and forth and rotation around the optical axis, both sides of the holder and the housing are fixed with an adhesive, It is difficult for the position to be displaced in the optical axis direction. However, when the thermal expansion / shrinkage of the adhesive applied on both sides and the amount and position of application vary, the holder may float from the V-shaped groove and may be displaced at a micron level in the direction perpendicular to the optical axis.

  In view of this, the present invention provides a fixed structure that can be applied to a product having a severe positional displacement tolerance between the three primary color laser beams in consideration of application to a laser module that displays colors by superimposing RGB three primary color laser beams. is there.

  In order to solve the above-described problems, an adhesive structure that restricts the expansion and contraction of the adhesive in the optical axis direction when the optical component is fixed is used to reduce the positional deviation of the lens in the direction perpendicular to the optical axis in principle. Thereby, the positional deviation of the lens in the optical axis direction can be reduced, and it is possible to provide an optical component fixing structure in which the focal position of the three primary color laser beams, that is, the variation in the beam diameter is reduced.

  An example of the means of the present invention is an optical component fixing structure for fixing an optical component to a housing, and an optical component having a through hole parallel to the optical axis direction is perpendicular to the optical axis inside the housing. An optical component fixing structure characterized in that an adhesive is filled in a through-hole between a casing wall and a casing wall facing the casing wall so as to be fixed on both sides.

  An example of the means of the present invention is to place an optical component having a through hole parallel to the optical axis direction between a housing wall perpendicular to the optical axis inside the housing and the housing wall facing the housing wall. Insert and fill with UV curable adhesive from the adhesive injection hole provided on the upper surface in the middle of the through hole, and bring the adhesive into contact with both sides of the housing wall and the housing facing wall. This is a feature of fixing the optical component. At that time, first, the UV curing adhesive filled between the above-mentioned housing wall and the above-mentioned housing facing wall and the above-mentioned optical component is cured by UV irradiation, and secondly, the above-mentioned optical component is cured. In this method, the UV curable adhesive filled in the adhesive injection hole is cured by UV irradiation.

  Further means of the present invention and effects thereof will be apparent from the entire specification below.

  According to the present invention, there is an effect that it is possible to provide a fixing structure for an optical component and a fixing method for the optical component, which can prevent a positional shift, particularly a shift in the direction perpendicular to the optical axis.

It is a perspective view which shows a RGB three primary color light source module apparatus. It is a perspective view which shows the fixing structure of the optical component of 1st Example. It is a perspective view which shows the assembly procedure of the optical component of 1st Example. It is 1st sectional drawing which shows the alignment method of the optical component of 1st Example. It is 2nd sectional drawing which shows the alignment method of the optical component of 1st Example. It is 1st sectional drawing which shows the assembly procedure of the optical component of 1st Example. It is 2nd sectional drawing which shows the assembly procedure of the optical component of 1st Example. It is 3rd sectional drawing which shows the assembly procedure of the optical component of 1st Example. It is a 1st perspective view which shows the lens assembly procedure of the optical component of 1st Example. FIG. 3 is a first cross-sectional view illustrating a lens alignment state of the optical component of the first example. It is a 2nd sectional view showing the lens alignment state of the optical component of the 1st example. It is sectional drawing which shows the lens assembly state of the fixing structure of the optical component of 2nd Example.

  Embodiments of the present invention will be described below with reference to the drawings.

  First, a first embodiment of the present invention will be described.

  FIG. 1 is a perspective view showing an RGB three primary color light source module device 101. The RGB three primary color light source module device 101 includes an RGB module case (housing) 102, a green LD 103, a green lens 110, a red LD 104, a red lens 111, a blue LD 105, a blue lens 112, and a first combining mirror. 106, a second composite mirror 107, and a two-way swing mirror 108.

  In the RGB three-primary-color light source module device 101 having the above-described configuration, green emitted light 113 emitted from the green LD 103 and condensed far away by the green lens 110 and red emitted from the red LD 104 and condensed far away by the red lens 111. The outgoing light 114 is synthesized by the first synthesis mirror 106, and the synthesized light and the blue outgoing light 115 emitted from the blue LD 105 and condensed in the distance by the blue lens 112 are synthesized by the second synthesis mirror 107. Thus, a combined beam of three colors of green, red, and blue is reflected by the two-way swing mirror 108. The two-way swing mirror 108 configures and projects an image by two-dimensionally scanning the three-color RGB combined beam 116 on a screen 109 provided outside the RGB three primary color light source module device 101.

  Although the present embodiment will be described using an RGB three-primary-color light source module device as an example, it goes without saying that the present invention can also be applied to combinations of other three color laser light sources. Needless to say, the present invention can be applied to all fixing structures of optical components.

  In order to realize the above optical system, the green LD 103, the green lens 110, the red LD 104, the red lens 111, the blue LD 105, the blue lens 112, and the first combining mirror 106 are provided for the RGB module case 102. The position of the second combining mirror 107 is adjusted. Thereafter, these components are fixed to the RGB module case 102 with an adhesive or the like.

  For example, any of the optical components of the green LD 103, the green lens 110, the red LD 104, the red lens 111, the blue LD 105, and the blue lens 112 shown in FIG. It is necessary to prevent deviation from the position.

  FIG. 2 is a perspective view showing a fixing structure of an optical component according to the first embodiment, and is a perspective view showing a state in which the lens holder 7 is assembled to a corresponding portion of the housing 1 of the apparatus and bonded and fixed. In the drawings subsequent to FIG. 2, the XYZ axes are shown to clarify the relationship between the drawings. Hereinafter, for example, the + direction on the Z-axis is described as the Z + direction.

  The optical component fixing structure of this embodiment shown in FIG. 2 includes a housing 1, an LD holder 2 to which an LD 3 is fixed in advance, a lens holder 7 to which a lens 8 is fixed in advance, and the positions thereof are adjusted. It has UV curable adhesives 4, 9 a, 9 b to be bonded and fixed. Here, the LD holder 2 corresponds to, for example, the green LD 103 in FIG. 1, and the lens holder 7 corresponds to, for example, the lens 110 in FIG. Further, the housing 1 shows a part of the housing for bonding and fixing the green LD 103 and the lens 110 mirror of the RGB three primary color light source module device used for the laser display.

  In FIG. 2, 3 denotes an LD, 21 denotes an optical axis, and 11 denotes a hole to which an optical component is fixed.

  FIG. 3 is a perspective view showing the assembly procedure of the optical component, and is a perspective view for explaining the assembly procedure when the LD holder 2 and the lens holder 7 of FIG. 2 are assembled to the housing 1 of the apparatus. FIGS. 4A and 4B are first and second cross-sectional views showing a method for aligning optical components. FIGS. 5A, 5B, and 5C are first, second, and third cross-sectional views showing the procedure for assembling the optical component. Unlike the perspective view of the fixing structure in FIG. 2, FIGS. 4A to 5C are side sectional views as viewed in the X + direction according to the assembly procedure.

  In the figure, 12 is a housing wall, 13 is a housing facing wall, 31a and 31b are UV irradiation, 71a and 71b are adhesive injection holes, and 72a and 72b are through holes.

  In addition, description of the number in a figure is common in each figure.

  First, a beam alignment method for the optical axis 21 will be described. The fixing structure of the optical component shown in FIG. 2 used in the apparatus shown in FIG. 1 is shown in FIGS. First, the LD holder 2 to which the LD 3 is fixed in advance is pressed against the casing optical axis hole 18 of the casing 1 as indicated by the arrow Z pressing 41.

  On the other hand, the lens holder 7 to which the lens 8 is fixed in advance is inserted into the square hole 11 of the housing 1, and Y− as shown by the arrow Y pressing 51 against the housing stoppers 14 a and 14 b in the square hole 11. Pressed in the direction and temporarily fixed.

  Next, as shown in FIG. 4B, the LD 3 is caused to emit light so that the imaging height (H) 24 with the adjustment optical axis 25 becomes a desired value with respect to the designated optical axis 21. The beam is positioned by aligning in the direction of the X-alignment 42 and the direction of the Y-alignment 43 indicated by the arrows, and the LD holder 2 is fixed.

  At this time, in the case of a combination of a single lens and a lens holder, it is best that the optical axis and the adjustment optical axis coincide. However, in an optical system including a plurality of lenses and a pair of lens holders, the amounts of deviation are different, and a great amount of adjustment time is required to completely match all of them as absolute values in the optical axis direction. Therefore, an optical system having substantially the same optical axis can be realized by introducing the concept of the adjustment optical axis 25 and adjusting so as to reduce the relative value of the deviation between the plurality of lenses and the lens holder pair. . For example, in the case of having three optical systems, if the remaining two are adjusted with one as a target, the number of adjustments can be reduced in principle as compared with the case where the three are respectively adjusted to the optical axis direction as absolute values. . Therefore, it is desirable that the coupling height (H) 24 of the adjustment optical axis 25 is not 0 but has a finite minute value (for example, about several μm to several tens of μm).

    In this way, strictly speaking, the optical axis and the adjustment optical axis are shifted in direction, but in the sense of adjustment in the Z direction, at least the optical axis in the Y direction and the adjustment optical axis can be almost identical, The description is given as an axial direction.

  Further, the lens holder 7 on which the lens 8 is fixed in advance is aligned in the direction of the optical axis 21 of the Z-alignment 52 indicated by the arrow so that the target imaging distance (L) 23 is obtained, and the beam is imaged. The lens holder 7 is fixed by positioning so that the position 22 is obtained. As described above, the beam imaging height (H) 24 is the position in the X and Y directions of the LD 3, and the beam imaging distance (L) 23 is the Z position of the lens holder 7. It becomes possible.

  Second, a specific adhesion fixing method will be described step by step with reference to FIGS. 5 (a) to 5 (c).

(1) Fixing process of LD holder 2 First, the position of the LD holder 2 aligned by the method of FIG. 4B is stored as the position of a positioning jig (not shown). Next, the positioning jig of the LD holder 2 is temporarily retracted in the Z-direction, and the thermosetting adhesive 5 is applied to the periphery of the case optical axis hole 18 of the case 1 and returned to the previously stored position. Thereafter, a UV curable adhesive 4 is applied around the contact surface between the housing 1 and the LD holder 2, UV-cured, and the LD holder 2 is temporarily fixed to the housing 1. Finally, the positioning jig is removed, the housing 1 on which the LD holder 2 is temporarily fixed is heated, and the thermosetting adhesive 5 is completely cured and cooled.

(2) Alignment / Adhesive Application Step of Lens Holder 7 First, the lens holder 7 is inserted into the square hole 11 of the housing 1 to which the LD holder 2 is bonded and fixed in FIG. None) is used to align the position of the lens holder 7 mainly in the direction of the optical axis 21 of the Z-alignment 52 of the arrow, and the target beam imaging height (H) 24 and the beam imaging distance. (L) Position to 23.

  Next, the UV curable adhesive 9a is injected from the adhesive injection holes 71a and 71b provided in the lens holder 7 shown in FIG. 3, and the inside of the through holes 72a and 72b is filled. A front gap (d1) 81 that is the distance between the holder 7 and the housing wall 12 and a rear gap (d2) 82 that is the distance between the lens holder 7 and the housing facing wall 13 are bridged with an adhesive.

(3) Two-stage UV curing of UV curable adhesive As the first UV curing stage, in FIG. 5 (b), the bridge bridged at the distance between the lens holder 7 and the housing wall 12 or the housing facing wall 13 The adhesive is subjected to UV irradiation using the front gap UV irradiation 32a and the rear gap UV irradiation 33a, respectively, and the adhesive is UV cured. At this time, the adhesive in the through-hole interior 35 of the through-holes 72a and 72b provided in the lens holder 7 is not cured because it is not irradiated with UV. As a second UV curing step, UV irradiation is performed from the adhesive injection holes 71a and 71b using the injection hole UV irradiation 34a, and the adhesive inside the through holes that have not been cured is UV cured.

Here, first, the principle capable of suppressing the displacement of the lens holder 7 will be described. As described above, since the adhesive is bridged in the direction of the optical axis 21 at the interval between the lens holder 7 and the housing wall 12 or the housing facing wall 13, UV curing shrinkage and thermal expansion and shrinkage of the adhesive are not caused. The position is limited to the direction of the optical axis 21 (Z-axis direction), and in particular, displacement in the vertical direction of the optical axis (X-axis direction or Y-axis direction) is unlikely to occur in principle. Further, since the thermal expansion / contraction amount in the direction of the optical axis 21 is bonded to both sides of the lens holder 7 to the housing 1, positional deviation can be suppressed as compared to the case of single-side bonding. The reason will be described in detail below for each factor.
(A) The reason why the adhesive is fixed on both sides of the lens holder 7 will be described. In general, one of the causes of misalignment is thermal expansion / contraction of the member used. The thermal expansion coefficient of the member used is about 100 to 200 ppm / K per 1 ° C. for the adhesive, and about 10 to 30 ppm / K for the metal used for the housing 1. For example, when the temperature changes from room temperature 20 ° C. to high temperature 80 ° C. or from room temperature 20 ° C. to low temperature −40 ° C., a temperature change amount ΔT = 60 ° C. is assumed.

When the lens holder 7 is bonded and fixed to the housing 1 only on one side, that is, cantilevered with an adhesive, the thickness of the adhesive is 500 μm and the amount of positional deviation with the amount of thermal expansion and contraction is 500 μm · 200 ppm / K · 60K = 6 μm. On the other hand, when the lens holder 7 is bonded and fixed to the housing 1 on both sides, the expansion and contraction of the adhesive is restricted by the distance (d1 + d0 + d2) between the housing wall 12 and the housing facing wall 13 of the metal housing 1. Therefore, the expansion / contraction amount as the metal of the housing 1 corresponds to the displacement amount, and is 500 μm · 30 ppm / K · 60K = 0.9 μm. Therefore, it is possible to greatly reduce the position shift due to thermal expansion and contraction.
(B) Next, the reason for UV curing in the first and second stages will be described. The adjustment amount of the Z-alignment 52 of the lens holder 7 needs to be about ± 100 to 200 μm due to processing errors and assembly errors of the LD holder 2, the lens 8, the lens holder 7, and the like. In order to allow UV irradiation to reach the adhesive to some extent, the front gap (d1) 81 and the rear gap (d2) 82 need to be at least about 200 to 300 μm. Therefore, in order to enable both alignment and UV irradiation, the adhesive thickness of the front gap (d1) 81 and the rear gap (d2) 82 is required to be about 300 to 500 μm. On the other hand, a UV curable adhesive generally shrinks in volume by about 1 to 2% during UV curing, that is, when a liquid is changed to a solid. That is, the UV curing shrinkage of 1 to 2% when the adhesive thickness is 500 μm corresponds to about 5 to 10 μm. Moreover, since the force generated at the time of contraction is as large as several tens to several hundreds gf, even if the jig is fixed by the positioning jig (not shown), the jig itself is elastically deformed at a micron level, and the lens holder 7 The position may be shifted. As described above, in the first UV curing stage, the adhesive in the through-hole inside 35 of the lens holder 7 is not irradiated with UV, but remains uncured, that is, a liquid portion. It is possible to absorb the UV curing shrinkage of the adhesive of d1) 81 and the rear gap (d2) 82, and prevent the positional deviation of the lens holder 7 itself due to UV curing.
(C) Further, a method for applying the adhesive will be described. Since the adhesive thickness of the front gap (d1) 81 and the rear gap (d2) 82 applied on both sides of the lens holder 7 is as thin as about 500 μm, the needle of the dispenser is directly inserted into these gaps for bonding. It is difficult to apply the agent uniformly. In this structure, the UV curable adhesives 9a and 9b are injected from the adhesive injection holes 71a and 71b provided in the lens holder 7, the interiors of the through holes 72a and 72b are filled, and the adhesive protrudes, It is also possible to uniformly apply an adhesive to the gap.

  Here, the UV curable adhesive can be used for both acrylic and epoxy. In the case of epoxy, the adhesive may be completely cured by applying heat curing after the above two-stage UV curing. Can be obtained as well.

  As described above, in particular, a positional deviation in the direction perpendicular to the optical axis (X-axis direction or Y-axis direction) hardly occurs in principle, and there is an effect that the positional deviation due to the thermal expansion / contraction amount in the optical axis direction can be suppressed.

  Next, a method of fixing the lens holder 7 to the housing 1 will be described with reference to FIGS. 6 (a) and 6 (b). 5A, the lens holder 7 is inserted into the square hole 11 of the housing 1 using a positioning jig (not shown), and the lens holder pressing surface shown in FIGS. 6A and 6B. 73a and 73b are pressed against the housing stoppers 14a and 14b by the Y pressing 51, respectively, and the Y position of the lens holder 7 is positioned. Since there is a gap in the X direction with the housing 1, the X alignment can be performed with the X alignment 53 in the X direction. Alignment is also performed in the optical axis direction of the Z-alignment 52 in FIG.

  Here, the structure in which the leaf spring 61 is added will be described with reference to FIG. The lens holder pressing surfaces 73a and 73b are pressed against the housing stoppers 14a and 14b in the Y-direction, and are always pressed by the leaf spring 61 even when the application positions and application amounts of the UV curable adhesives 9a and 9b vary. Accordingly, it is possible to suppress the positional deviation in the Y + direction.

  Next, a method for finely adjusting the position of the lens holder 7 will be described with reference to FIG. 5A, when the lens holder 7 is positioned by a positioning jig (not shown), the lens holder pressing surfaces 73a and 73b are not pressed against the housing stoppers 14a and 14b, respectively. The position of the lens holder 7 can be finely adjusted by the Y-alignment 54.

  Next, a second embodiment of the present invention will be described with reference to FIG.

  FIG. 7 is a front view showing the fixing structure of the optical component of the second embodiment, and is a front view of the fixing structure of the optical component seen in the Z + direction, like FIG. 6B of the first embodiment. 5A, the lens holder 70 is inserted into the square hole 11 of the housing 1 using a positioning jig (not shown), and the side surface of the lens holder 70 is placed in the housing V-shaped groove 15. By pressing against the contact points 74a and 74b, the X position and Y position of the lens holder 7 can be uniquely positioned. Similarly to FIG. 6B, even if the application position and application amount of the UV curable adhesives 9a and 9b vary by adding the leaf spring 61 and pressing in the Y-direction, the X + -direction and the Y + There is also an effect of suppressing displacement in the direction.

  At this time, as shown in FIG. 7 in particular, the holder bottom surface is formed in an arc shape and the housing is formed in a V shape, so that an effect of natural positioning by the compressive force of the spring is expected.

  The present embodiment is an example in which an optical component or a three-primary-color light source module device to which the idea of the first or second embodiment is applied is used for projection onto a windshield of an automobile.

  That is, 109 in FIG. 1 corresponds to the windshield of an automobile.

  In the present embodiment, necessary information can be projected onto the windshield without shifting the line of sight during travel. For example, when car navigation information is projected, the traveling direction and route of the car can be determined safely. Further, when the speed and the number of rotations are projected, it is no longer necessary to shift the line of sight, so that it is possible to drive more safely.

  Of course, the idea of this embodiment may be used in a cockpit of an aircraft other than an automobile. In such a case, the projection surface 109 may be a transparent projection surface independent of the windshield.

  It goes without saying that the embodiments of the present invention may be combined. Moreover, applying the idea to various forms is also included in the scope of the present invention.

DESCRIPTION OF SYMBOLS 1 ... Housing, 2 ... LD holder, 3 ... LD, 4 ... UV curable adhesive, 5 ... Thermosetting adhesive, 7 ... Lens holder, 8 ... Lens, 9a, 9b ... UV curable adhesive, 11 ... Square hole, 12 ... Housing wall, 13 ... Housing facing wall, 14a, 14b ... Housing stopper, 15 ... Housing V-shaped groove, 18 ... Housing optical axis hole, 21 ... Optical axis, 22 ... Imaging Position, 23 ... Imaging distance L, 24 ... Imaging height H, 25 ... Adjusting optical axis, 31a, 31b ... UV irradiation, 32a, 32b ... Front gap UV irradiation, 33a, 33b ... Back gap UV irradiation, 34a, 34b ... Injection hole UV irradiation, 35 ... Inside through-hole, 41 ... Z pressing, 42 ... X alignment, 43 ... Y alignment, 51 ... Y pressing, 52 ... Z alignment, 53 ... X alignment, 54 ... Y Alignment, 61 ... leaf spring, 70 ... lens holder, 71a, 71b ... adhesive injection hole, 72a, 72b ... penetration 73a, 73b ... Pushing surface, 74a, 74b ... Contact point, 76 ... Lens holder thickness d0, 81 ... Front gap d1, 82 ... Back gap d2, 101 ... RGB three primary color light source module device, 102 ... RGB module case, 103 ... Green LD, 104 ... Red LD, 105 ... Blue LD, 106 ... Composite mirror, 107 ... Composite mirror, 108 ... Two-way swing mirror, 109 ... Screen, 110 ... Green lens, 111 ... Red lens, 112 ... Blue lens 113... Green outgoing light 114. Red outgoing light 115 115 Blue outgoing light 116. Three-color RGB combined beam

Claims (10)

  An adhesive in which an optical component having a through hole parallel to the optical axis is filled in the through hole between a housing wall perpendicular to the optical axis direction inside the housing and a housing wall facing the housing wall An optical component fixing structure characterized by being fixed by adhesive on both sides.   The optical component fixing structure according to claim 1, wherein the through hole merges with an adhesive injection hole in the middle thereof.   The optical component fixing structure according to claim 1, wherein the optical component is pressed against the housing by a leaf spring.   2. The optical component fixing structure according to claim 1, wherein the bottom of the optical component has an arc shape, a groove parallel to the optical axis is provided in the housing, and the optical component is pressed and fixed to the groove. Structure for fixing optical components.   The optical component fixing structure according to claim 1, wherein the optical component is a lens that transmits and collects light or a lens holder that holds the lens.   A lens or a lens holder for holding the lens fixed to the housing by the optical component fixing structure according to claim 5, and a semiconductor laser (LD) provided near the optical axis focal point of the lens. The LD module. An optical component fixing structure according to any one of claims 1 to 5, wherein a lens fixed to the housing by the optical component fixing structure or a lens holder for holding the lens is provided. Having three primary color light source module devices,
A first laser diode that generates laser light of a first color and is fixed to a housing of the three primary color light source module device;
A second laser diode that generates laser light of a second color different from the first color and is fixed to a housing of the three primary color light source module device;
A third laser diode that generates laser light of a third color different from any of the first and second colors and is fixed to a housing of the three primary color light source module device;
A first half mirror that transmits the first laser light incident from one surface and combines the first laser light while reflecting the second laser light incident from the other surface;
A second laser beam that is combined with the laser beam synthesized by the first half mirror while transmitting the laser beam synthesized by the first half mirror incident from one surface and reflecting the third laser beam incident from the other surface. Half mirror and
A three-primary-color light source module device comprising: a two-way swing mirror that reflects a laser beam synthesized by the second half mirror and transmits the reflected laser beam from the three-primary-color light source module device, and changes a reflection direction of the laser beam.   An optical component having a through hole parallel to the optical axis direction is inserted between the housing wall perpendicular to the optical axis direction inside the housing and the housing wall facing the housing wall, and the middle of the through hole An optical component fixing method comprising filling an UV curable adhesive from an adhesive injection hole provided on an upper surface and bringing the adhesive into contact with both sides of the housing wall and the housing facing wall. . First, UV curing the UV curable adhesive filled between the housing wall and the housing facing wall and the optical component is cured,
Second, the method of fixing an optical component according to claim 8, wherein the UV curable adhesive filled in the adhesive injection hole is cured by UV irradiation.   An automobile or an aircraft, characterized in that the structure for fixing an optical component according to any one of claims 1 to 5 is applied, and a projection surface is provided on the front thereof.

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