KR20120037507A - Light emitting device and manufacturing method for same - Google Patents

Abstract

(Problem) Provided is a light emitting device capable of easily and appropriately adjusting an optical axis and a method of manufacturing the same.
(Solution means) The light emitting unit is located between the first base material 6, the second base material 7, and the first base material and the second base material, one of which is a convex curved portion, and the other of which is formed of a concave portion. It is comprised with the inclination adjustment part 27 and the light emitting element 9. As shown in FIG. The light-emitting element by the first fixing portion 34 and the inclination adjusting portion 27 where the front surface 7c of the second base material 7 abuts against the supporting surface 5a and is fixed in a position adjusted with respect to the supporting surface. A second fixing portion 29 is formed in which the inclination of (9) is fixed in the adjusted state. The second substrate 7 is formed of a light-transmissive material, and the first fixing portion 34 and the second fixing portion 29 are fixed by light transmitted through the second substrate 7.

Description

Light emitting device and manufacturing method thereof {LIGHT EMITTING DEVICE AND MANUFACTURING METHOD FOR SAME}

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a light emitting device comprising a light emitting unit having a light emitting element, and a support having a support surface for fixing and supporting the light emitting unit, and a manufacturing method thereof.

BACKGROUND A light emitting device comprising a light emitting element (bare chip) is used for various information processing devices. In this type of light emitting device, high-precision optical axis adjustment with respect to the light emitting element is required so that the optical axis of light is in the proper direction.

However, in the related art, a highly accurate optical axis adjustment technique and its structure for a light emitting element have not been established.

Patent Document 1 below discloses an invention relating to a stage positioning device.

However, Patent Document 1 is not an invention relating to a light emitting device, and nothing is described with respect to optical axis adjustment. Moreover, although invention of patent document 1 implements alignment of X, Y, and Z directions, a structure is complicated and there are many component points. In addition, in invention of patent document 1, it does not describe at all about the fixing structure (fixing method) of the stage aligned.

Patent Document 1: Japanese Patent Application Laid-Open No. 59-178728

Accordingly, an object of the present invention is to provide a light emitting device and a method for manufacturing the same, which can solve the above-mentioned conventional problems easily and appropriately.

The light emitting device in the present invention,

And a support having a light emitting unit having a light emitting element, and a support surface for holding and fixing the light emitting unit.

The light emitting unit is located between the first base material, the second base material disposed opposite to the first base material, the first base material and the second base material, and one of the light emitting units is a convex curved portion, The inclination adjustment part formed in the other concave part facing the convex curved part, and the said light emitting element supported by the said 1st base material side among the said 1st base material and the said 2nd base material,

The first fixing portion between the cross section of the second substrate and the support surface fixed in a state in which the cross section of the second substrate abuts on the support surface in contact with the support surface, and the light emission by the tilt adjustment unit A second fixing portion is formed between the convex curved portion and the concave portion to be fixed in a state where the inclination of the element is adjusted;

The second substrate is formed of a light-transmissive material, and the first fixing portion and the second fixing portion are fixed by light transmitted through the second substrate.

In the present invention, as described above, the light emitting unit having a simple structure and a low component score can be configured with the first base material, the second base material, the inclination adjustment unit, and the light emitting element, and further, the cross section of the second base material can be constructed. The position of the light emitting element can be adjusted by bringing it into contact with the support surface, and the tilt of the light emitting element can be adjusted by sliding between the convex curved portion and the concave portion of the tilt adjusting portion. It is a structure that can be easily and precisely adjusted.

And in this invention, between the cross section of a 2nd base material, and a support surface is a 1st fixed part, between a convex curved part and a recessed part is a 2nd fixed part, and one of a convex curved part and a recessed part is integrated with a 2nd base material. The second substrate is formed of a light transmissive material. Therefore, each fixing part can be fixed using the transmission of the light with respect to a 2nd base material, and each fixing part can be fixed simply and reliably after performing position adjustment and inclination adjustment of a light emitting element with high precision. As described above, in the present invention, the light-emitting device which can adjust the optical axis in a predetermined direction with high precision adjustment and can easily and securely adhere to the surface at the time of fixing after adjustment, can be easily and securely fixed. Can be realized. In addition, the light emitting device of the present invention is formed using a light emitting element, which can promote miniaturization of the light emitting device. In addition, in the present invention, the optical axis can be adjusted with high accuracy by using the structure of the present invention even if the positional deviation or high precision alignment is not performed in the lens unit or band filter mounted in the light emitting device.

In the present invention, it is preferable that a plurality of light emitting units are fixedly supported on the support surface, and each light emitting unit is positioned relative to the support surface and the inclination of the light emitting element is adjusted so that the respective optical axes coincide. According to the present invention, each optical axis can be easily and precisely aligned, and a compact light emitting device having a plurality of light emitting units can be realized.

Moreover, in this fixing part, it is preferable to permeate | transmit an ultraviolet-ray to the said 2nd base material, and it is fixed by ultraviolet curing resin, or it is preferable to irradiate a laser beam to the said 2nd base material, and to fuse | melt a metal, and to adhere. Thereby, surface shift | offset | difference etc. do not generate | occur | produce well at the time of fixation, and deterioration by temperature change etc. does not occur easily even after fixation, and each fastening part can be fixed simply and reliably.

Moreover, in this invention, the said concave part which comprises the said convex curved part is interposed between the said 1st base material and the said 2nd base material, The said recessed part in the surface of the said 1st base material and the said 2nd base material which oppose the said spherical part, respectively. A shape portion is formed, the first substrate is formed of a light transmissive material, and a third fixing portion is formed between the concave portion of the first substrate and the spherical portion, and the third fixing portion is connected to the first substrate. It is preferable to fix by light transmission. Thereby, the inclination adjustment of the light emitting element can be performed with high precision and simply. In addition, the first substrate is formed of a light-transmitting material similarly to the second substrate, so that not only the first fixing portion and the second fixing portion but also the third fixing portion can be fixed simply and reliably by utilizing the transmission of light to the first substrate. Can be.

Moreover, in this invention, it can also be set as the structure in which the said convex curved part is integrally formed in one of the said 1st base material and the said 2nd base material, and the said recessed part is integrally formed in the other. As a result, a simpler structure can be realized.

Moreover, in this invention, it is preferable that the heat radiating member is formed between the said 1st base material and the said light emitting element, and the said light emitting element is mounted on the surface of the said heat radiating member. Thereby, the heat dissipation of a light emitting device can be improved.

Moreover, in this invention, it is preferable that the holding plate which served as the heat sink holding between the said heat radiating member and the said 2nd base material, or between the said 1st base material and the said 2nd base material is formed. Thereby, between each member which comprises a light emitting unit can be hold | maintained without fixing the 2nd fixed part and the 3rd fixed part between a convex curved part and a recessed part, Therefore, a position adjustment is performed with respect to a support body, and a convex curved shape is performed. After adjusting the inclination of the light emitting element by sliding the upper portion and the concave portion, each fixing portion can be properly fixed. In addition, when the holding plate also serves as the heat sink, the heat dissipation of the light emitting device can be improved.

Or the light-emitting device in this invention is comprised with the support body provided with the some light-emitting unit and the support surface which fixedly supports the said light-emitting unit,

Each light emitting unit is located between the first substrate, the second substrate disposed to face each other on the first substrate, and the first substrate and the second substrate, and one of them is a convex curved portion, and the convex curved portion And an inclination adjustment portion formed in a concave portion facing the other side, and a light emitting element supported on the first substrate side among the first substrate and the second substrate,

The cross section of the 2nd base material of each light emitting unit abuts on the said support surface so that the optical axis of each light emitting unit may match, and the inclination of each light emitting element of each light emitting unit was adjusted using the said inclination adjustment part. Each light emitting unit is fixedly supported on the support surface.

In the present invention, as described above, the light emitting unit having a simple structure and a low component score can be configured with the first base material, the second base material, the inclination adjustment unit, and the light emitting element, and further, the cross section of the second base material can be constructed. The position of the light emitting element can be adjusted by hitting the support surface, and the tilt of the light emitting element can be adjusted by sliding between the convex curved portion and the concave portion of the tilt adjusting portion. It is a structure that can be easily and precisely adjusted.

In the present invention, each light emitting unit is fixedly supported on the support surface, and a compact light emitting device in which the optical axes of the light emitting units are matched with high accuracy can be realized.

Moreover, this invention is a manufacturing method of the light emitting device comprised with the light emitting unit and the support body provided with the support surface which fixes and supports the said light emitting unit,

The light emitting unit is located between the first base material, the second base material formed of the light-transmitting material, and the first base material and the second base material, and one of the light emitting units is a convex curved portion, and the other opposing the convex curved portion is concave. A tilt adjustment unit formed of a shape portion and a light emitting element supported on the first substrate side among the first substrate and the second substrate,

While irradiating light from the light emitting unit, the end surface of the second substrate is brought into contact with the support surface to adjust the position with respect to the support surface, and the inclination of the light emitting element is adjusted using the tilt adjustment unit, Light is transmitted to the second substrate formed of the light-transmitting material to fix the first fixing portion between the end face and the supporting surface of the second substrate and the second fixing portion between the convex curved portion and the concave portion, respectively. It is characterized by.

As described above, the end surface of the second substrate can be brought into contact with the support surface to adjust the position of the support surface of the light emitting element, and the light emitting element is slid by sliding between the convex curved portion and the concave portion of the inclination adjustment portion. The tilt adjustment can be performed, and it is possible to perform such a plurality of adjustments simply and with high accuracy.

Furthermore, in this invention, since each fixing part is fixed using the transmission of the light with respect to a 2nd base material, after fixing position and inclination adjustment of a light emitting element with high precision, each fixing part can be fixed easily and with high precision. In addition, in this invention, a surface shift | offset | difference generate | occur | produces in each fixation part, or a problem, such as a quality change by a temperature change after fixation, does not arise, and each fixation part can be fixed reliably and simply.

In the present invention, it is preferable to simultaneously fix both the first fixing portion and the second fixing portion. In the present invention, one adjustment may be performed first and the one fixing portion may be fixed, and then the other adjustment may be performed to fix the other fixing portion. However, the second fixing portion may be fixed without performing the fixing step separately. The end surface of the substrate is brought into contact with the support surface to adjust the position with respect to the support surface, and the inclination of the light emitting element is adjusted by sliding between the convex curved portion and the concave portion, and at the same time, the fixing portions are fixed. Since it is possible to do this, the optical axis can be adjusted simply and with high accuracy.

In the present invention, when the plurality of light emitting units are fixedly supported on the support surface, after supporting the first light emitting unit on the support surface, the other light emitting unit is irradiated with light from the light emitting element, It is preferable to perform position adjustment and tilt adjustment of the light emitting element so that the optical axis of the other light emitting unit coincides with the optical axis of the first light emitting unit. According to the present invention, the optical axis of each light emitting unit can be matched easily and with high accuracy.

Furthermore, in this invention, after forming the ultraviolet curable resin film or the metal film in each fixed part, and after adjusting position to the said support surface and inclination of the light-emitting element, the ultraviolet-ray is transmitted to the said 2nd base material, and the said ultraviolet curable resin It is preferable to fix the first fixing part and the second fixing part by fixing the first fixing part and the second fixing part by the film or by transmitting light to the second substrate to melt the metal film.

Thereby, surface shift | offset | difference etc. do not generate | occur | produce easily at the time of fixation, and deterioration by temperature change etc. does not occur easily even after fixation, and each fastening part can be fixed simply and appropriately.

According to the present invention, a compact light emitting device capable of adjusting the optical axis of the light emitting unit with high accuracy in a predetermined direction can be realized.

1 is a perspective view of a light emitting device of a first embodiment according to the present invention.
FIG. 2 is a side view of the light emitting device shown in FIG. 1 as seen from arrow II. FIG.
FIG. 3 is a front view of the light emitting device shown in FIG. 1 as seen from the arrow III direction. FIG.
4 is a plan view of the light emitting device shown in FIG. 1.
5 is an exploded perspective view of each light emitting unit mounted in the light emitting device.
FIG. 6 is a perspective view of a light source device in which the light emitting device shown in FIG. 1 is mounted.
7 is a schematic diagram illustrating another configuration of the inclination adjustment unit.
8 is a perspective view of a light emitting device according to a second embodiment of the present invention.
9 is an exploded perspective view of a light emitting unit mounted on the light emitting device of FIG. 8.
10 is a perspective view for explaining a method for manufacturing a light emitting device according to the present invention.

1 is a perspective view of a light emitting device according to a first embodiment of the present invention, FIG. 2 is a side view of the light emitting device shown in FIG. 1 seen from the arrow II direction, and FIG. 3 is a light emitting device shown in FIG. 4 is a plan view of the light emitting device shown in FIG. 1, FIG. 5 is an exploded perspective view of each light emitting unit mounted in the light emitting device, and FIG. 6 is a perspective view of the light source device equipped with the light emitting device shown in FIG. to be.

In each drawing, the X1-X2 direction and the Y1-Y2 direction indicate two directions orthogonal to each other in the horizontal plane. In the present embodiment, the Y1-Y2 direction is the front-rear direction in each light emitting unit 2 to 4, and X1-. X2 direction was made into the left-right direction. In addition, Z1-Z2 direction is a height direction.

The light emitting device 1 in this embodiment is comprised with the some light emitting unit 2-4 and the support body 5. As shown in FIG.

As shown in FIG. 5 and the like, each light emitting unit 2 to 4 includes a first base material 6, a second base material 7, a spherical portion (ball portion) 8, and a light emitting element (bare chip) ( 9), the heat radiating member 10, the holding plate 11, and the lens part 12 are comprised.

In the present embodiment, the number of light emitting units 2 to 4 is not limited. The light emitting element (bare chip) 9 may have a different wavelength or may be the same. As the light emitting element 9, a laser diode (LD), a light emitting diode (LED), or the like can be used.

As shown in FIG. 5 etc., the light emitting element 9 is mounted on the upper surface of the heat radiating member 10. As shown in FIG. The heat dissipation member 10 is made of AlN, for example, of a material superior in thermal conductivity to the first base material 6 and the second base material 7. The light emitting element 9 is die bonded and wire bonded to the upper surface of the heat dissipation member 10, and is electrically connected to the electrode portion 13.

The first base material 6 and the second base material 7 are formed of a light transmitting material. The first base material 6 and the second base material 7 are glass, polycarbonate resin (PC resin), polyethylene terephthalate resin (PET resin), polyethylene naphthalate resin (PEN resin), and cyclic polyolefin (COP resin). And transparent base materials such as polymethyl methacrylate resin (acrylic) (PMMA), and semi-transparent base materials such as silicone.

As shown in FIG. 5 etc., the 1st base material 6 is formed in the shape of a rectangular body. As shown in FIG. 2 and FIG. 5 etc., the 2nd base material 7 extends in parallel in the Y1-Y2 direction, and opposes the rectangular parallelepiped shape which opposes the 1st base material 6 in the height direction (Z1-Z2 direction). It is comprised with the part 7a and the front-end | tip part 7b which extends from the said opposing part 7a to the downward Z2 in the front Y1 of the said opposing part 7a.

As shown in FIG. 2, the length dimension T1 in the Y1-Y2 direction of the second base material 7 is formed longer than the length dimension T2 of the first base material 6. And as shown in FIG. 2, in the state which the 1st base material 6 and the 2nd base material 7 were assembled, a part of tip part 7b of the 2nd base material 7 is ahead of the 1st base material 6 It is slightly projected to (Y1). The front surface 7c of the tip portion 7b of the second base material 7 is a flat surface, and the area of the front surface 7c is larger than the area of the front surface 6a of the first base material 6.

As shown in FIG. 2, FIG. 5 etc., the 1st base material 6 and the 2nd base material 7 are assembled in the lower surface 6b of the 1st base material 6, and the upper surface 7d of the 2nd base material 7, respectively. The concave portions 14 and 15 are formed in portions facing each other in the height direction Z1-Z2.

And as shown in FIG. 2, the spherical part 8 is assembled in the state interposed between the recessed parts 14 and 15 of the 1st base material 6 and the 2nd base material 7. As shown in FIG. In this embodiment, the inclination adjustment part 27 is comprised by the spherical part 8 and the recessed parts 14 and 15. As shown in FIG. The surface of the spherical portion 8 is a spherical surface having a certain predetermined radius of curvature. On the other hand, the concave portions 14 and 15 may be curved surfaces, or may be concave portions formed in, for example, V shapes other than curved surfaces.

The material of the spherical portion 8 is not particularly limited. A metal ball may be sufficient, or what formed inorganic material other than resin and a metal in ball shape.

As shown in each drawing of FIGS. 1-6, the lens part 12 is mounted in front Y1 of the upper surface 6c of the 1st base material 6. As shown to FIG. As shown in FIG. 2, in the assembled state, the lens portion 12 is located at the front Y1 of the light emitting element 9. Moreover, it is arbitrary to form the lens part 12 in the 1st base material 6, for example, it is also possible to form the lens part 12 in the support body 5 side (refer the structure of FIG. 8).

It is preferable that the holding plate (holding plate) 11 is made of a material having excellent thermal conductivity similarly to the heat radiating member 10. The holding plate 11 is a plate spring material such as stainless steel having excellent thermal conductivity. As shown to FIG. 3, FIG. 5 etc., the holding plate 11 is integrated with the side part 11a located in the left surface side X2 of the heat radiating member 10, and the said side part 11a, and is integrated with the heat radiating member 10 The opposing part 7a of the 2nd base material 7 of the assembled state integrated with the back part 11b located in the back Y2 of this side, and the said side part 11a, and FIG. 2, FIG. The opposing part 11c formed in the position which opposes the lower surface of (), and the holding | maintenance protrusion 11d formed in the inner surface of the said opposing part 11c are comprised. The surface of the holding projection 11d is formed in a convex curved surface shape.

As shown in FIG. 5, the side portion 11a of the holding plate 11 is fixed to the heat dissipation member 10 by an adhesive, welding, or the like. 2 and 3, in the assembled state, the surface of the holding protrusion 11d abuts on the lower surface of the opposing portion 7a of the second base material 7, and has a concave shape of the first base material 6. Even if the state between the part 14 and the spherical part 8 and between the recessed part 15 and the spherical part 8 of the 2nd base material 7 is not stuck, each light emission is carried out by the holding plate 11 The heat radiating member 10, the 1st base material 6, the spherical part 8, and the 2nd base material 7 which comprise the unit 2-4 are piled up in the height direction, and can be maintained.

Between the recessed part 14 and the spherical part 8 of the said 1st base material 6, the 3rd fixing part 28 and the recessed part 15 and the spherical part 8 of the 2nd base material 7 Between the second fixing portion 29 (see Fig. 2), these fixing portions 29 are fixed after the inclination adjustment of the light emitting element 9 is made as described later in detail. Therefore, the light emitting device 1 as a finished product is in a state in which both of the second fixing portion 29 and the third fixing portion 28 are fixed. Moreover, between the 1st base material 6 and the heat dissipation member 10 is also fixed. Although the fixing method is not specifically limited, In particular, in this embodiment, since the 1st base material 6 is formed with a light transmissive material, UV cured resin is made between the 1st base material 6 and the heat radiating member 10, for example. After the alignment between the light emitting element 9 and the lens portion 12 is completed, the first base material 6 and the heat dissipation member are transmitted through the ultraviolet curable resin by transmitting ultraviolet rays through the first base material 6. It can stick together between (10).

As shown in FIG. 1, the support surface 5 is provided with the support surface 5a parallel to an X-Z surface. The support surface 5a is located in the rear side Y2 of the support body 5, and faces the front surface 7c of the second base material 7 of each light emitting unit 2-4. In this embodiment, the support surface 5a is arranged on the light emitting surface side (light emitting surface) of the light emitting element 9 or on the light emitting portion side (front side of each lens portion 12) of each light emitting unit 2 to 4. Is located.

In addition, as shown in FIG. 1, the holder 25 is formed in the upper surface 5c of the support body 5, and the prism 16 and the bandpass filters 17 and 18 are formed on the said holder 25 again. . The prism 16 and the bandpass filters 17 and 18 are all provided with the inclination of 45 degree with respect to the X-axis and the Y-axis.

The band pass filter 17 and the band pass filter 18 differ from each other in transmission characteristics and reflection characteristics. The band pass filter 17 is generated from the third light emitting unit 4, transmits the light reflected by the prism 16, and reflects the light generated from the second light emitting unit 3. On the other hand, the band pass filter 18 transmits both of the light which generate | occur | produces from the 3rd light emitting unit 4 and the 2nd light emitting unit 3, and reflects the light emitted from the 1st light emitting unit 2. As shown in FIG.

As shown in FIG. 1, FIG. 2, and FIG. 4, each light emitting unit 2-4 has the front surface 7c of the 2nd base material 7 which contacted (butted) the support surface 5a of the support body 5. ) Is fixedly supported on the support surface 5a. In this embodiment, between the front surface 7c and the support surface 5a of the 2nd base material 7 comprises the 1st fixing part 34 (refer FIG. 2).

In the present embodiment, the front surface 7c of the second base material 7 of each light emitting unit 2 to 4 is positioned in the X direction and the Z direction in the support surface 5a, and the spherical portion 8 And the inclination of the light emitting element 9 are adjusted by sliding between the concave portions 14 and 15, and the optical axis B1 of each light emitting unit 2 to 4 which is reflected or transmitted through the band pass filter 18 and is emitted. (Refer FIG. 4).

In this embodiment, as shown in FIG. 2, the 1st fixed part 34 between the front surface 7c and the support surface 5a of the 2nd base material 7, and the spherical part 8 and the 2nd base material 7 2nd fastening part 29 between the recessed parts 15 of the (circle), and the 3rd fixed part 28 between the recessed part 14 of the spherical part 8 and the 1st base material 6, and Each of these fixing portions 28, 29, 34 is fixed after the positional adjustment and the inclination adjustment of the light emitting element 9 are finished.

Each fixing | fixed part 28, 29, 34 is fixed using ultraviolet curing resin 20, 21, 22, for example (refer FIG. 2, FIG. 5). As shown in FIG. 5, the ultraviolet curable resins 21 and 22 are apply | coated to the recessed parts 14 and 15 formed in the 1st base material 6 and the 2nd base material 7, for example.

In the present embodiment, the first base material 6 and the second base material 7 are formed of a light transmissive material. Therefore, it is possible to transmit ultraviolet rays to the first base material 6 and the second base material 7 to cure each of the ultraviolet curing resins 20, 21, 22. Therefore, the light emitting element which adjusts the position between the front surface 7c and the support surface 5a of the 2nd base material 7, and slides between each recessed part 14 and 15 and the spherical part 8 is performed. After the inclination adjustment of (9) is performed with high accuracy, each fixing part 28, 29, 34 can be fixed reliably and simply.

As described above, in the present embodiment, the optical axes from the light emitting units 2 to 4 which reflect or pass through the band pass filter 18 are emitted. Hereinafter, the optical axis adjustment method (manufacturing method of the light emitting device 1) is demonstrated using FIG.

First, the first light emitting unit 2 is attached to the support surface 5a of the support 5. As shown in FIG. 10, in the state which light L1 was emitted from the light emitting element 9 which is input to the electrode part 13 and comprises the light emitting unit 2, as shown to FIG. 2, FIG. The front surface 7c of 7) is made to abut against the support surface 5a of the support 5. The ultraviolet curable resin 20 (refer FIG. 2) is apply | coated to the front surface 7c or the support surface 5a side of the 2nd base material 7, for example. The front surface 7c of the second base material 7 is moved while abutting on the X-Z surface of the support surface 5a, and the position adjustment in the X direction and the Z direction is performed. In addition, the inclination of the light emitting element 9 of the first light emitting unit 2 is adjusted by sliding between the spherical portion 8 and the concave portions 14 and 15. In this embodiment, since the surface of the spherical part 8 can be slid in any direction, the inclination of the light emitting element 9 can be adjusted three-dimensionally. Since the 2nd base material 7 is in contact with the support surface 5a, when it slides between the spherical part 8 and the recessed parts 14 and 15, it inclines above the 2nd base material 7 It is the 1st base material 6, the heat radiation member 10, and the light emitting element 9 located in the side. In FIG. 10, the light emitting element 9 is tilted in the rotational direction r about the X1-X2 axis, for example. In addition, as shown in FIG. 5, the ultraviolet curable resins 21 and 22 are previously apply | coated in the recessed part 14 and 15, for example.

The position adjustment and inclination adjustment in the X direction and the Z direction of the light emitting element 9 can be performed while confirming the direction of the optical axis B1 obtained by being reflected by the band pass filter 18. Although this optical axis B1 direction becomes a reference direction, the adjustment which actually fits a plurality of optical axes becomes important from the installation of the following 2nd light emitting unit 3. Thus, for example, the first in a state where the second fixing portion 29 and the third fixing portion 28 are fixed by the ultraviolet curable resins 21 and 22 in advance without adjusting the inclination of the light emitting element 9. The light emitting unit 2 may be mounted at a predetermined position of the support surface 5a.

In the present embodiment, the first base material 6 and the second base material 7 are formed of a light transmissive material. Therefore, the ultraviolet ray permeate | transmitted to the 1st base material 6 and the 2nd base material 7, and the ultraviolet curable resin 20, 21, 22 formed in each fixing | fixed part 28, 29, 34 is hardened, and the 2nd base material ( 7 can be fixed between the front surface 7c and the support surface 5a, and between the spherical portion 8 and the recessed portions 14 and 15, respectively.

Subsequently, the second light emitting unit 3 is attached to the support 5 as shown in FIG. 10. At this time, the ultraviolet curable resins 21 and 22 are applied between the spherical portion 8 and the concave portions 14 and 15 constituting the second light emitting unit 3, but are not in a hardened and fixed state. No (uncured).

When attaching the second light emitting unit 3 to the support 5, the light L2 is emitted from the light emitting element 9 constituting the second light emitting unit 3, and is reflected by the band pass filter 17. Then, while checking whether or not the optical axis B2 transmitted through the band pass filter 18 coincides with the optical axis B1 serving as the reference of the first light emitting unit 2, the position adjustment and the tilt adjustment of the light emitting element 9 are performed. Conduct. That is, in the state which light L2 emitted from the light emitting element 9 which comprises the 2nd light emitting unit 3, the front surface 7c of the 2nd base material 7 of the 2nd light emitting unit 3 is supported by the support body 5 ) Abuts against the supporting surface 5a and adjusts the position in the X and Z directions. At the same time, the inclination of the light emitting element 9 of the second light emitting unit 3 is adjusted by sliding between the spherical portion 8 and the concave portions 14 and 15. In addition, in FIG. 10, the optical axis B1 used as the reference | standard and the optical axis B2 currently adjusted are shown so that it may not overlap.

The above-described position adjustment and tilt adjustment are respectively adjusted so that the optical axis B2 coincides with the optical axis B1 of the first light emitting unit 2, and when the optical axis B2 coincides with the optical axis B1, the second light emitting unit ( Ultraviolet (U) is irradiated to the first base material (6) and the second base material (7) of 3) to transmit the inside of each base material (6, 7), and the ultraviolet light applied to each fixing part (28, 29, 34) The cured resins 20, 21, 22 are cured. In this embodiment, it is also possible to harden each ultraviolet curable resin 20, 21, 22 simultaneously.

Subsequently, the third light emitting unit 4 is attached to the support 5, but the optical axis adjusting method (manufacturing method) of the third light emitting unit 4 is omitted because it is the same as the second light emitting unit 3.

In the light emitting device 1 of this embodiment, as shown in FIG. 5 etc., the 1st base material 6, the 2nd base material 7 which opposes the said 1st base material 6, and the inclination adjustment part 27 are shown. (It consists of the spherical part 8 and the recessed part 14 and 15) and the light emitting unit 2 and 4 can be comprised by the simple structure which has the light emitting element 9, and with few component points. Furthermore, the front surface 7c of the second base material 7 is brought into contact with the support surface 5a, and the position adjustment with respect to the support surface 5a can be performed, and the spherical portion 8 and the concave shape are provided. The inclination adjustment of each light emitting element 9 can be performed by sliding between the parts 14 and 15, and it is set as the structure which can perform such a several adjustment simply and with high precision.

And in this embodiment, the 1st fixing part 34 is formed between the front surface 7c and the support surface 5a of the 2nd base material 7, and the recessed part 15 of the 2nd base material 7, The 2nd fixing part 29 is formed between the spherical part 8, and the 2nd base material 7 is formed with the light transmissive material. Therefore, each fixing part 29 and 34 can be fixed using the light transmission with respect to the 2nd base material 7, respectively, and after each position fixing and inclination adjustment of the light emitting element 9 are carried out with high precision, each fixing is carried out. The parts 29 and 34 can be fixed securely and simply.

1-5, the 1st base material 6 which opposes the said spherical part 8 is provided with the spherical part 8 interposed between the 1st base material 6 and the 2nd base material 7. As shown in FIG. A concave portion 14 is formed on the surface of the spherical portion, and the third fixing portion 28 is formed between the spherical portion 8 and the concave portion 14. And the 1st base material 6 is also formed with the light transmissive material. Therefore, the 3rd fixing part 28 can be fixed simply and reliably using the permeation | transmission of the light to the 1st base material 6.

According to the present embodiment, according to the present embodiment, it is possible to perform simple and reliable fixing with high precision adjustment and no surface misalignment at the time of fixing after adjustment, and to adjust the optical axis with high precision in a predetermined direction. Possible light emitting device 1 can be realized. In addition, the light emitting device 1 of the present embodiment is formed by using the light emitting element (bare chip) 9, and the size of the light emitting device 1 can be promoted. In addition, in this embodiment, even if the lens part 12 mounted in the light emitting device 1, the bandpass filters 17 and 18, the prism 16, etc. are not made to the positional deviation and high precision alignment, this embodiment is carried out. By using the structure of the optical axis can be adjusted with high accuracy.

In the present embodiment, the plurality of light emitting units 2 to 4 are fixedly supported on the common support surface 5a. Each light emitting unit 2 to 4 is positioned with respect to the support surface 5a and the inclination of the light emitting element 9 is adjusted so that the respective optical axes coincide. According to the structure of this embodiment, each optical axis can be matched easily and with high precision, and the compact light emitting device provided with the some light emitting unit 2-4 was realizable.

In this embodiment, each fixing part 28, 29, 34 transmits ultraviolet-ray to the said 1st base material 6 and the 2nd base material 7, and is fixed by the ultraviolet curable resin 20, 21, 22 have. Or the structure which irradiates a laser beam to the 1st base material 6 and the 2nd base material 7, and fuse | melts and fixes a metal may be sufficient. For this purpose, it is necessary to previously form the metal film which can be melted by a laser beam in each fixing part 28, 29, 34. As shown in FIG.

In this embodiment, the material which can be fixed by light transmission with respect to the 1st base material 6 and the 2nd base material 7 is formed previously in the interface of each fixing part 28, 29, 34, and the 1st base material 6 ) And the fixing portions 28, 29, 34 are fixed by transmitting light through the second base material 7. For this reason, compared with the case where an adhesive agent etc. are apply | coated along the outer peripheral part of the front surface 7c and the support surface 5a of the 2nd base material 7, simple and reliable fixation can be implement | achieved. In addition, although the periphery of the fixing part of the spherical part 8 and the recessed parts 14 and 15 is hard to see from the outside, it is more difficult to fix using an adhesive etc. from the outside, According to this embodiment, the spherical part ( 8) between the concave portions 14 and 15 can be fixed simply and reliably. As mentioned above, in this embodiment, surface shift | offset | difference etc. do not generate | occur | produce between members at the time of fixation, and deterioration by temperature change etc. does not occur easily even after fixation, and each fastening part 28, 29, 34 is simple and reliably. ) Can be fixed.

In addition, in this embodiment, the heat radiating member 10 is not an essential member. However, since the 1st base material 6 and the 2nd base material 7 which were formed with the light transmissive material generally have low thermal conductivity, in order to improve heat dissipation, the base material which mounts each light emitting element 9 is made into heat radiation, such as AlN. It is preferable to form the member 10.

In addition, although the holding plate 11 is not an essential member, in the process of positioning and fixing each light emitting unit 2-4 to the support body 5, in order to adjust the inclination of the light emitting element 9, 1st Third fixing portion 28 between the concave portion 14 and the spherical portion 8 of the base material 6, and between the concave portion 15 and the spherical portion 8 of the second base material 7. Since the two fastening portions 29 are not fixed to each other, problems such as dispersing of the members are likely to occur, for example, when an external force is applied without the holding means. Therefore, by forming the holding plate 11 of the structure shown in this embodiment, each light emitting unit 2-4 before fixing can be appropriately hold | maintained, Furthermore, the holding plate 11 is formed with the material excellent in thermal conductivity, and also By supporting the holding plate 11 in contact with the heat dissipation member 10, the light emitting device 1 having excellent heat dissipation can be constituted more effectively.

The surface of the holding projection 11d is a convex curved surface, between the concave portion 15 and the spherical portion 8 of the first base material 6 and the concave portion 14 of the second base material 7. Similarly, when sliding between the spherical portions 8, the holding projection 11d can be slid with respect to the lower surface of the second base material 7, and even if the holding plate 11 is provided, the light emitting element 9 Tilt adjustment can be performed suitably.

In the embodiment shown in FIG. 1 to FIG. 5, a spherical portion (ball portion) 8 is interposed between the concave portion 14 of the first base material 6 and the concave portion 15 of the second base material 7. It was a configuration. Instead of this, as shown to FIG. 7 (a), the convex-shaped curved part 40 is moved from the lower surface 6b of the 1st base material 6 below (Z2 direction; the direction of the 2nd base material 7) to the said 1st It is good also as a structure which formed integrally with the base material 6, and formed the recessed part 15 in the surface of the 2nd base material 7 which opposes the said convex curved part 40. As shown in FIG. Alternatively, as shown in Fig. 7 (b), the convex curved portion 55 is moved upward from the upper surface of the second base material 7 (Z1 direction; direction of the first base material 6) with the second base material 7. It is good also as a structure which formed integrally and formed the recessed part 14 in the surface of the 1st base material 6 which opposes the said convex curved part 55. As shown in FIG.

The first fixing portion 24 constitutes between the convex curved portions 40 and 55 and the concave portions 14 and 15 shown in FIG. 7A and 7B. And after adjusting the inclination of the light emitting element 9 by sliding between the said convex curved parts 40 and 55 and the recessed parts 14 and 15 similarly to embodiment shown to FIG. Light (for example, ultraviolet rays) can be transmitted to the second base material 7 to fix the first fixing portion 24 (for example, the ultraviolet curing resin formed in advance on the first fixing portion 24 is cured and fixed). Let).

Moreover, in the structure shown to Fig.7 (a) (b), it is not necessary to form the 1st base material 6 from a light transmissive material. Therefore, for example, the first base material 6 can be formed of a material having excellent thermal conductivity such as AlN in the same manner as the heat radiating member 10 shown in FIG. 5. In this case, the heat radiating member 10 is unnecessary, and the light emitting element 9 can be provided directly in the surface of the 1st base material 6.

In the manufacturing method (optical axis adjustment method) of the light emitting device 1 according to the present embodiment described with reference to FIG. 10 and the like, the front surface of the second base material 7 is irradiated with light from the light emitting units 2 to 4. 7c) makes contact with the support surface 5a, and adjusts the position with respect to the said support surface 5a, and also slides between the spherical part 8 and the recessed parts 14 and 15, and the said light emitting element The inclination of (9) is adjusted and light is transmitted to the second base material 7 and the first base material 6 formed of the light-transmissive material, so that the first between the second base material 7 and the supporting surface 5a. The fixing portion 34 and the second fixing portion 29 and the third fixing portion 28 between the spherical portion 8 and the concave portions 14 and 15 are fixed.

Thus, in this embodiment, while the front surface 7c of the 2nd base material 7 hits the support surface 5a, the position adjustment with respect to the support surface 5a of the light emitting element 9 can be performed, The inclination adjustment of the light emitting element 9 can be performed by sliding between the spherical portion 8 and the concave portions 14 and 15, and it is possible to perform such a plurality of adjustments simply and with high accuracy.

Furthermore, in this embodiment, the 1st fixing part 34 located between the front surface 7c and the support surface 5a of the 2nd base material 7, and the recessed part 15 of the 2nd base material 7, and The second fixing portion 29 between the spherical portion 8 and the third fixing portion 28 between the concave portion 14 and the spherical portion 8 of the first substrate 6 are formed of the first substrate 6. ) And fixing using the light transmission to the second base material 7, the positioning portions 28, 29, 34 of the light emitting element 9 are precisely adjusted and then the fixing portions 28, 29, 34 are secured. It can also be fixed simply. In addition, in this embodiment, the surface shift | offset | difference generate | occur | produces in each fixing | fixed part 28, 29, 34, or it does not generate | occur | produce a problem, such as a quality change by a temperature change after fixing, and each fixing part 28, 29, 34 suitably. ) Can be fixed.

In this embodiment, it is possible to fix both the 1st fastening part 34 and the 2nd fastening part 29 simultaneously. That is, in this embodiment, although one adjustment is performed first and it may be set to the state which fixed one fastening part, then the other adjustment may be performed and the fastening part may be fixed, but it does not need to perform a fixing process separately in this way, 2 While the front surface 7c of the base material 7 abuts against the support surface 5a and adjusts the position with respect to the support surface 5a, by sliding between the spherical part 8 and the recessed part 15, Since the inclination of the light emitting element 9 can be adjusted and the fixing portions 28 and 34 can be fixed at the same time, the optical axis can be adjusted simply and with high accuracy. In addition, since the fixing step is completed at one time, the manufacturing time can be shortened, and further, the manufacturing cost can be reduced.

Moreover, in this embodiment, since the 3rd fixing part 28 is further formed between the recessed part 14 and the spherical part 8 of the 1st base material 6, the 1st fixing part 34 and With the fixing of the second fixing portions 29, it is possible to transmit light to the first base material 6, and to fix the fixing portions 28, 29 and 34 simultaneously.

In the present embodiment, when the plurality of light emitting units 2 to 4 are fixedly supported on the supporting surface 5a, the first light emitting unit 2 is supported on the supporting surface 5a, and other light emitting units ( Positioning 3 and 4 with respect to the support surface 5a and inclination of the light emitting element 9 while irradiating light from the light emitting element 9 is carried out so that the optical axes of the other light emitting units 3 and 4 are adjusted. This coincides with the optical axis B1 of the first light emitting unit 2.

According to this embodiment, the optical axis of each light emitting unit 2-4 can be easily matched with high precision easily by the position adjustment with respect to the support surface 5a, and the inclination adjustment of the light emitting element 9. As shown in FIG. The timing of fixation to each fixing part of each light emitting unit 2-4 may be performed for each light emitting unit 2-4, or may be performed simultaneously with all the light emitting units 2-4.

The light emitting device 1 in this embodiment is attached to the light source device 33 shown in FIG. As shown in FIG. 6, the light emitting device 1 is housed in the case 30 constituting the light source device 33, and the IC 31, the lens unit 32, and the like are housed in the case 30. . As shown in FIG. 6, a plurality of terminal portions 35 electrically connected to the IC 31 are formed on the outer circumferential surface of the case 30. Moreover, the window 30a is formed in the side surface of the case 30 in the position which opposes the lens part 32. As shown in FIG.

In the light source device 33 shown in FIG. 6, light is irradiated to the exterior from the lens part 32 through the window 30a. In the present embodiment, for example, light having different wavelengths and different colors generated from each of the light emitting units 2 to 4 can be alternately switched and irradiated to the outside from the lens unit 32 along the same optical axis. . Alternatively, light emitted from the plurality of light emitting units 2 to 4 may be irradiated to the outside from the lens unit 32 at the same time.

8 and 9 are perspective views showing the structures of a separate light emitting device and a light emitting unit different from those of FIGS. 1 to 5. In addition, although only one light emitting unit is mounted in the light emitting device 60 of FIG. 8, it is possible to mount three light emitting units as shown in FIG.

In the light-emitting device 60 shown in FIG. 8, the recessed part 41a is formed in the surface of the support body 41, and one vertical surface 42 formed in this recessed part 41a is used as the support surface. In this embodiment, since light is emitted from the light emitting unit 45 in the Y2 direction, the vertical surface (support surface) 42 is located on the side opposite to the light irradiation part of the light emitting unit 45. In addition, in this embodiment, the lens part 43, the bandpass filter 44, etc. are mounted on the upper surface 41b of the support body 41. As shown in FIG.

9 is an exploded perspective view of the light emitting unit 45. As shown in FIG. 9, the light emitting unit 45 includes the light emitting element 9, the heat dissipation member 10, the first base material 48, the second base material 46, the first base material 48 and the second base material. It is comprised with the inclination adjustment part 53 and the heat radiating plate 47 located between 46.

The light emitting element 9 and the heat radiating member 10 are the same as that of the aspect shown in FIG. In the embodiment shown in FIG. 9, the heat dissipation plate 47 is interposed between the heat dissipation member 10 and the first base member 48. Moreover, the convex curved part 49 which protrudes below is formed in the lower surface of the 1st base material 48 like FIG.7 (a). In addition, in this embodiment, it is arbitrary whether the 1st base material 48 is formed from a light transmissive material.

9, the concave part 50 is formed in the upper surface of the 2nd base material 46 in the position which opposes the said convex curved part 49. As shown in FIG. The inclination adjustment part 53 is comprised by the said convex curved part 49 and the recessed part 50. As shown in FIG.

In addition, the second base member 46 is provided with a wall portion 51 extending in the height direction on the side facing the support surface 42, and the wall surface 51a facing the support surface 42 of the wall portion 51 is It is a flat surface and the 1st fixing part is comprised between the wall surface 51a and the support surface 42. As shown in FIG.

Moreover, between the convex curved part 49 formed in the 1st base material 48, and the recessed part 50 formed in the 2nd base material 46, the 2nd fixed part is comprised. The second base member 46 is formed of a light-transmissive material, and, for example, an ultraviolet curable resin is formed in the first fixing portion and the second fixing portion, and is supported between the wall surface 51a and the supporting surface 42. The position of the light emitting element 9 with respect to the 42 is adjusted, the inclination of the light emitting element 9 is adjusted by sliding between the convex curved portion 49 and the concave portion 50, and these adjustments are made. By maintaining the state and transmitting ultraviolet rays through the second base member 46, each fixing portion can be fixed, and the optical axis of each light emitting unit can be easily and precisely aligned.

In another embodiment, in the same manner as described above, the light emitting units each have a light emitting element, a first base material, a second base material, and an inclination adjusting portion positioned between the first base material and the second base material, It is fixedly supported by the support surface, and each optical axis is the structure which matched. As a result, each light emitting unit having a simple structure and a low component number can be configured, and furthermore, the end surface of the second substrate can be brought into contact with the support surface, and the position of the support surface can be adjusted. The inclination adjustment of the light emitting element can be performed by sliding between the upper portion and the concave portion, and this structure has a structure in which such a plurality of adjustments can be easily and accurately performed. The plurality of light emitting units having such a structure are fixedly supported on the supporting surfaces, respectively, to realize a compact light emitting device having a plurality of light emitting units having a simple structure and having the same optical axis. In addition, in this invention, the 2nd base material is not limited to what is a transparent material, and a fixing method is not limited, either.

In addition, in this embodiment, the number of a 1st base material and a 2nd base material is not limited. For example, a plurality of second substrates are formed, a second substrate having one of a convex curved portion and one concave portion formed thereon, and a second substrate having a cross section in contact with the support surface are separately prepared, and these second substrates are bonded to each other. Can present the form that is present.

One … Light emitting device
2? 4, 45... Light emitting unit
5 ... Support
5a, 42... Support surface
6, 48. First description
7, 46... 2nd base
7c front (of the second description)
8 … Spherical
9 ... Light emitting element
10 ... Heat dissipation member
11 ... Maintenance plate
11d. Retaining protrusion
12, 32, 43... Lens part
14, 15, 50... Concave
17, 18, 44... Band filter
20, 21, 22... UV curable resin
27, 53... Tilt adjustment
28. 3rd fixing part
29. 2nd fixing part
30 ... case
33 ... Light source device
34. 1st fastening part
40, 55, 49... Convex curved part
47. Heat dissipation plate
51. Wall
51a... Wall panel

Claims (12)

And a support having a light emitting unit having a light emitting element, and a support surface for holding and fixing the light emitting unit.
The light emitting unit is located between the first substrate, the second substrate disposed opposite to the first substrate, the first substrate and the second substrate, and one of the light emitting units is a convex curved portion. It is comprised with the inclination adjustment part formed in the concave part which opposed the other, and the said light emitting element supported by the said 1st base material side among the said 1st base material and the said 2nd base material,
The first fixing portion between the cross section of the second substrate and the support surface fixed in a state in which the cross section of the second substrate abuts on the support surface in contact with the support surface, and the light emission by the tilt adjustment unit A second fixing portion is formed between the convex curved portion and the concave portion to be fixed in a state where the inclination of the element is adjusted;
The second substrate is formed of a light transmissive material, and the first fixing portion and the second fixing portion are fixed by light transmitted through the second substrate. The method of claim 1,
A light emitting device in which a plurality of light emitting units are fixedly supported on the support surface, and each light emitting unit is positioned relative to the support surface and the inclination of the light emitting element is adjusted so that each optical axis coincides. The method according to claim 1 or 2,
In each fixing part, the ultraviolet-ray is transmitted to the said 2nd base material, and it is fixed by the ultraviolet curable resin, or the light-emitting device is fixed by irradiating a laser beam to the said 2nd base material, and melting a metal. The method according to any one of claims 1 to 3,
Between the first substrate and the second substrate, a spherical portion constituting the convex curved portion is interposed, and the concave portion is formed on the surfaces of the first and second substrates facing the spherical portion, respectively. And the first substrate is formed of a light transmissive material, and a third fixing portion is formed between the concave portion and the spherical portion of the first substrate, and the third fixing portion is fixed by light transmission to the first substrate. Light emitting device. The method according to any one of claims 1 to 3,
The light-emitting device in which the said convex-shaped curved part is integrally formed in one of the said 1st base material and the said 2nd base material, and the said concave-shaped part is integrally formed in the other. 6. The method according to any one of claims 1 to 5,
A heat dissipation member is formed between the first substrate and the light emitting element, and the light emitting element is mounted on the surface of the heat dissipation member. The method according to any one of claims 1 to 6,
A light emitting device having a holding plate that serves as a heat sink to hold the heat dissipation member and the second base material or between the first base material and the second base material. And a support having a plurality of light emitting units and a support surface for fixing and supporting the light emitting units,
Each light emitting unit is located between the first substrate, the second substrate disposed to face each other on the first substrate, and the first substrate and the second substrate, and one of them is a convex curved portion, and the convex curved portion And an inclination adjustment portion formed in a concave portion facing the other side, and a light emitting element supported on the first substrate side among the first substrate and the second substrate,
In such a state that the end face of the second base material of each light emitting unit is brought into contact with the support surface so that the respective optical axes coincide with each other, and the inclination of each light emitting element of each light emitting unit is adjusted using the inclination adjustment unit. The light emitting device is characterized in that the light emitting unit is fixedly supported on the support surface. In the manufacturing method of the light-emitting device comprised with the light-emitting unit and the support body which has the support surface which fixedly supports the said light-emitting unit,
The light emitting unit is located between the first base material, the second base material formed of the light-transmitting material, and the first base material and the second base material, and one of the light emitting units is a convex curved portion, and the other opposing the convex curved portion is concave. A tilt adjustment unit formed of a shape portion and a light emitting element supported on the first substrate side among the first substrate and the second substrate,
While irradiating light from the light emitting unit, the end surface of the second substrate is brought into contact with the support surface to adjust the position with respect to the support surface, and the inclination of the light emitting element is adjusted using the tilt adjustment unit, Light is transmitted to the second substrate formed of the light-transmitting material to fix the first fixing portion between the end face and the supporting surface of the second substrate and the second fixing portion between the convex curved portion and the concave portion, respectively. A method of manufacturing a light emitting device, characterized by the above-mentioned. The method of claim 9,
The manufacturing method of the light emitting device which fixes both a said 1st fixed part and a said 2nd fixed part simultaneously. The method according to claim 9 or 10,
When the plurality of light emitting units are fixedly supported on the support surface, the first light emitting unit is supported on the support surface, and then another light emitting unit is adjusted to the support surface while irradiating light from the light emitting element and emitting light. A method of manufacturing a light emitting device in which the inclination of the elements is adjusted to match the optical axis of another light emitting unit with the optical axis of the first light emitting unit. The method according to any one of claims 9 to 11,
An ultraviolet curable resin film or a metal film is formed at each fixing portion, and after the adjustment of the position with respect to the support surface and the inclination of the light emitting element are finished, ultraviolet rays are transmitted through the second substrate to allow the first ultraviolet curable resin film to be used. A method of manufacturing a light emitting device, wherein the fixing portion and the second fixing portion are fixed, or the first film and the second fixing portion are fixed by melting the metal film by transmitting light through the second substrate.

Images