WO2012053070A1 - レーザ光源モジュール及びレーザ光源モジュールの製造方法 - Google Patents
レーザ光源モジュール及びレーザ光源モジュールの製造方法 Download PDFInfo
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- WO2012053070A1 WO2012053070A1 PCT/JP2010/068463 JP2010068463W WO2012053070A1 WO 2012053070 A1 WO2012053070 A1 WO 2012053070A1 JP 2010068463 W JP2010068463 W JP 2010068463W WO 2012053070 A1 WO2012053070 A1 WO 2012053070A1
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- WIPO (PCT)
- Prior art keywords
- laser light
- light source
- receiving element
- light receiving
- source module
- Prior art date
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Classifications
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F21—LIGHTING
- F21V—FUNCTIONAL FEATURES OR DETAILS OF LIGHTING DEVICES OR SYSTEMS THEREOF; STRUCTURAL COMBINATIONS OF LIGHTING DEVICES WITH OTHER ARTICLES, NOT OTHERWISE PROVIDED FOR
- F21V23/00—Arrangement of electric circuit elements in or on lighting devices
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- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01S—DEVICES USING THE PROCESS OF LIGHT AMPLIFICATION BY STIMULATED EMISSION OF RADIATION [LASER] TO AMPLIFY OR GENERATE LIGHT; DEVICES USING STIMULATED EMISSION OF ELECTROMAGNETIC RADIATION IN WAVE RANGES OTHER THAN OPTICAL
- H01S5/00—Semiconductor lasers
- H01S5/40—Arrangement of two or more semiconductor lasers, not provided for in groups H01S5/02 - H01S5/30
- H01S5/4012—Beam combining, e.g. by the use of fibres, gratings, polarisers, prisms
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- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04N—PICTORIAL COMMUNICATION, e.g. TELEVISION
- H04N9/00—Details of colour television systems
- H04N9/12—Picture reproducers
- H04N9/31—Projection devices for colour picture display, e.g. using electronic spatial light modulators [ESLM]
- H04N9/3129—Projection devices for colour picture display, e.g. using electronic spatial light modulators [ESLM] scanning a light beam on the display screen
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- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04N—PICTORIAL COMMUNICATION, e.g. TELEVISION
- H04N9/00—Details of colour television systems
- H04N9/12—Picture reproducers
- H04N9/31—Projection devices for colour picture display, e.g. using electronic spatial light modulators [ESLM]
- H04N9/3141—Constructional details thereof
- H04N9/315—Modulator illumination systems
- H04N9/3155—Modulator illumination systems for controlling the light source
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- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04N—PICTORIAL COMMUNICATION, e.g. TELEVISION
- H04N9/00—Details of colour television systems
- H04N9/12—Picture reproducers
- H04N9/31—Projection devices for colour picture display, e.g. using electronic spatial light modulators [ESLM]
- H04N9/3191—Testing thereof
- H04N9/3194—Testing thereof including sensor feedback
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- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01S—DEVICES USING THE PROCESS OF LIGHT AMPLIFICATION BY STIMULATED EMISSION OF RADIATION [LASER] TO AMPLIFY OR GENERATE LIGHT; DEVICES USING STIMULATED EMISSION OF ELECTROMAGNETIC RADIATION IN WAVE RANGES OTHER THAN OPTICAL
- H01S5/00—Semiconductor lasers
- H01S5/02—Structural details or components not essential to laser action
- H01S5/022—Mountings; Housings
- H01S5/02208—Mountings; Housings characterised by the shape of the housings
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- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01S—DEVICES USING THE PROCESS OF LIGHT AMPLIFICATION BY STIMULATED EMISSION OF RADIATION [LASER] TO AMPLIFY OR GENERATE LIGHT; DEVICES USING STIMULATED EMISSION OF ELECTROMAGNETIC RADIATION IN WAVE RANGES OTHER THAN OPTICAL
- H01S5/00—Semiconductor lasers
- H01S5/02—Structural details or components not essential to laser action
- H01S5/022—Mountings; Housings
- H01S5/02208—Mountings; Housings characterised by the shape of the housings
- H01S5/02212—Can-type, e.g. TO-CAN housings with emission along or parallel to symmetry axis
-
- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01S—DEVICES USING THE PROCESS OF LIGHT AMPLIFICATION BY STIMULATED EMISSION OF RADIATION [LASER] TO AMPLIFY OR GENERATE LIGHT; DEVICES USING STIMULATED EMISSION OF ELECTROMAGNETIC RADIATION IN WAVE RANGES OTHER THAN OPTICAL
- H01S5/00—Semiconductor lasers
- H01S5/06—Arrangements for controlling the laser output parameters, e.g. by operating on the active medium
- H01S5/068—Stabilisation of laser output parameters
- H01S5/0683—Stabilisation of laser output parameters by monitoring the optical output parameters
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- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01S—DEVICES USING THE PROCESS OF LIGHT AMPLIFICATION BY STIMULATED EMISSION OF RADIATION [LASER] TO AMPLIFY OR GENERATE LIGHT; DEVICES USING STIMULATED EMISSION OF ELECTROMAGNETIC RADIATION IN WAVE RANGES OTHER THAN OPTICAL
- H01S5/00—Semiconductor lasers
- H01S5/30—Structure or shape of the active region; Materials used for the active region
- H01S5/32—Structure or shape of the active region; Materials used for the active region comprising PN junctions, e.g. hetero- or double- heterostructures
- H01S5/323—Structure or shape of the active region; Materials used for the active region comprising PN junctions, e.g. hetero- or double- heterostructures in AIIIBV compounds, e.g. AlGaAs-laser, InP-based laser
- H01S5/32308—Structure or shape of the active region; Materials used for the active region comprising PN junctions, e.g. hetero- or double- heterostructures in AIIIBV compounds, e.g. AlGaAs-laser, InP-based laser emitting light at a wavelength less than 900 nm
- H01S5/32341—Structure or shape of the active region; Materials used for the active region comprising PN junctions, e.g. hetero- or double- heterostructures in AIIIBV compounds, e.g. AlGaAs-laser, InP-based laser emitting light at a wavelength less than 900 nm blue laser based on GaN or GaP
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- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01S—DEVICES USING THE PROCESS OF LIGHT AMPLIFICATION BY STIMULATED EMISSION OF RADIATION [LASER] TO AMPLIFY OR GENERATE LIGHT; DEVICES USING STIMULATED EMISSION OF ELECTROMAGNETIC RADIATION IN WAVE RANGES OTHER THAN OPTICAL
- H01S5/00—Semiconductor lasers
- H01S5/40—Arrangement of two or more semiconductor lasers, not provided for in groups H01S5/02 - H01S5/30
- H01S5/4025—Array arrangements, e.g. constituted by discrete laser diodes or laser bar
- H01S5/4087—Array arrangements, e.g. constituted by discrete laser diodes or laser bar emitting more than one wavelength
- H01S5/4093—Red, green and blue [RGB] generated directly by laser action or by a combination of laser action with nonlinear frequency conversion
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- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y10—TECHNICAL SUBJECTS COVERED BY FORMER USPC
- Y10T—TECHNICAL SUBJECTS COVERED BY FORMER US CLASSIFICATION
- Y10T29/00—Metal working
- Y10T29/49—Method of mechanical manufacture
- Y10T29/49826—Assembling or joining
Definitions
- the present invention relates to a laser light source module used for, for example, a projector and a pad-up display, and a manufacturing method thereof.
- Patent Document 1 includes a structure in which a light emitting / receiving unit including a light receiving element and a light emitting element is provided on a metal plate, and the light receiving / emitting unit is sealed by a glass substrate on an upper surface and a sealing substrate on a side surface.
- a laser light source module is disclosed.
- Patent Document 2 includes a substrate and a hermetic structure for sealing an internal structure including a semiconductor element, and includes a package in which a lead frame for connecting a plurality of wirings at an end portion is disposed.
- a laser light source module having a structure in which a substrate and a package are bonded and sealed with a structural adhesive is disclosed.
- Patent Document 3 includes a semiconductor laser chip, a light receiving element, a package for housing the semiconductor laser chip, and a transparent member for sealing, and the light of the semiconductor laser chip according to the monitor current of the light receiving element.
- a laser light source module whose output is controlled is disclosed.
- Patent Document 4 discloses a method of fixing each laser light source after position adjustment in a chip state.
- FIGS. 7A to 7C are diagrams schematically showing a procedure for attaching a chip LD 202 which is a chip-shaped laser light source with a jig 201 on the mounting surface 203 of the substrate. As shown in FIG. 7C, in this case, it is necessary to provide a space corresponding to the arrow 204 and the arrow 205 in addition to the width of the chip LD202.
- FIG. 8A shows the light receiving element 207 mounted on the mount surface 203 and the protrusions 208A and 208B for fixing the light receiving element 207.
- FIG. 8A shows the light receiving element 207 mounted on the mount surface 203 and the protrusions 208A and 208B for fixing the light receiving element 207.
- FIG. 8B and FIG. 8C are diagrams schematically showing a procedure for attaching the light receiving element 207 to the mount surface 203 on the same substrate after attaching the chip LD 202. As shown in FIG.
- a jig space having a width corresponding to the arrow 205 is provided between the protrusion 208 ⁇ / b> B and the light receiving element 207. Therefore, as shown in FIG. 8C, when the light receiving element 207 is attached to the mount surface 203 on the same substrate as the chip LD 202, the width corresponding to the width of the arrow 204 and the width of the protrusion 208B (arrow 209). Only), it is necessary to provide a gap between the light receiving element 207 and the chip LD202.
- the main object of the present invention is to provide a laser light source module having a light receiving element and having a configuration that can be reduced in size, and a manufacturing method thereof.
- the invention according to claim 1 includes a plurality of laser light sources each having a different wavelength, and a combining element that superimposes the laser beams emitted from the laser light sources, and outputs the laser light superimposed by the combining element.
- a plurality of laser light sources each having a different wavelength, a combining element that superimposes the laser light emitted from the laser light source, and a light receiving device for monitoring the laser light emitted from the laser light source.
- a laser light source module that includes an element, a case portion that houses the plurality of laser light sources and the composite element, and a sealing portion that seals the case portion, and outputs laser light superimposed by the composite element
- a third step of attaching the light receiving element to the sealing portion after the execution of the second step is
- FIG. 2 is a cross-sectional view of the laser light source module along a cut surface Aa-Ab shown in FIG.
- FIG. 2 is a cross-sectional view of the laser light source module along a cut surface Aa-Ab shown in FIG.
- a plurality of laser light sources each having a different wavelength
- a combining element that superimposes the laser light emitted from the laser light source, and an output that outputs the laser light superimposed by the combining element
- the laser light source module includes a plurality of laser light sources, a composite element, an output unit, a light receiving element, a case unit, and a sealing unit.
- the combining element superimposes the laser beams emitted from the laser light source.
- the output unit outputs the laser beam superimposed by the combining element.
- the light receiving element detects the intensity of the laser light emitted from the laser light source.
- the case unit houses the laser light source and the synthesis element.
- the sealing part seals the case part. And the light receiving element is attached to the sealing part.
- the laser light source module can be reduced in size.
- a condensing lens that condenses the laser light and enters the light receiving element is provided, and the condensing lens is attached to the sealing portion.
- the condensing lens since the laser light is incident on the light receiving element through the condensing lens having the light condensing property, the light receiving efficiency can be increased.
- a condensing lens is attached to a sealing part, an installation space can be suppressed.
- the laser light source module includes a reflection mirror that reflects the light collected by the condenser lens and enters the light receiving element, and the reflection mirror is attached to the sealing portion. Or is integrally formed with the sealing portion.
- the light receiving element receives the laser light by reflecting the laser light with the reflection mirror. Can do. Therefore, the installation location of the light receiving element can be determined flexibly. Further, since the reflection mirror is attached to or integrally formed with the sealing portion, the installation space can be suppressed.
- the sealing portion can transmit the laser light
- the light receiving element is attached at a position that is not sealed by the case portion and the sealing portion
- a printed circuit board is further provided that adheres to the light receiving element and transmits a signal generated by the light receiving element.
- the laser light source module since the laser light source module is attached at a position where the light receiving element is not sealed, the light receiving element and the printed board are directly electrically connected. Therefore, in this aspect, the laser light source module does not require a lead frame. Therefore, the laser light source module can be further reduced in size.
- the sealing portion has a concave portion on a surface opposite to the surface facing the case portion, and the printed circuit board is a position covering the concave portion, and the light receiving portion.
- the element is adhered to the opposite surface at a position where the element is accommodated in the recess.
- the position of the light receiving element can be adjusted without bending the printed board, and the stress applied to the printed board can be reduced.
- the space in the case portion can be effectively used, and the laser light source module can be reduced in size.
- a plurality of laser light sources each having a different wavelength, a combining element that superimposes the laser light emitted from the laser light source, and the laser light emitted from the laser light source are monitored.
- a light receiving element a case part that houses the plurality of laser light sources and the composite element, and a sealing part that seals the case part, and outputs laser light superimposed by the composite element
- a second step of attaching the sealing portion, and a third step of attaching the light receiving element to the sealing portion after the second step is performed.
- the laser light source and the synthesis element are attached to the case part, and the sealing part is attached to the case part, and then the light receiving element is attached to the sealing part.
- FIG. 1 is a schematic configuration diagram of a laser light source unit 1 according to the present embodiment.
- the laser light source unit 1 includes an image signal input unit 2, a control unit 20, a laser light source module 100, and a MEMS mirror 10.
- FIG. 1 shows the laser light source module 100 as an overhead view, and for convenience of explanation, only the outer edge portion of the sealing transparent cover 4 is shown by a one-dot chain line.
- the typical optical path of a laser beam is displayed with the broken line with an arrow.
- elements that cannot be directly visually recognized are illustrated by diagonal lines with a broken line frame as appropriate.
- the laser light source module 100 outputs laser light in which light beams having different wavelengths emitted from the red laser light source LD1, the green laser light source LD2, and the blue laser light source LD3 are superimposed by the prism PZ, and the laser. Light is detected by the light receiving element PD.
- the laser light source module 100 mainly includes a case portion 3, a sealing transparent cover 4, a prism PZ, a red laser light source LD1, a green laser light source LD2, and a blue laser light source LD3 (simply “ And a light receiving element PD, a printed circuit board 5, and an output lens 6.
- the case portion 3 is a case portion that houses the prism PZ, the red laser light source LD1, the green laser light source LD2, the blue laser light source LD3, and the output lens 6, and is formed by partially opening the upper surface 32. And the case part 3 is formed in a substantially rectangular parallelepiped shape in the state sealed by the sealing transparent cover 4.
- the sealing transparent cover 4 has light permeability and seals the case portion 3 from the upper surface 32.
- the sealing transparent cover 4 includes a storage portion 40 that stores the light receiving element PD formed in a concave shape with respect to the surface 41 that is the opposite surface of the surface facing the case portion 3.
- the sealing transparent cover 4 is an example of the "sealing part” in this invention, and the accommodating part 40 is an example of the "concave part” in this invention. Details of the sealing transparent cover 4 will be described later.
- the prism (combining element) PZ is, for example, a trichroic prism, and transmits the laser light emitted from the red laser light source LD1 toward the output lens 6, and a part of the laser light is received by the reflection surface 92b. Reflect toward the PD.
- the prism PZ reflects the laser light emitted from the green laser light source LD2 toward the output lens 6 with the reflection surface 92a, and a part of the reflected laser light is reflected on the light receiving element PD with the reflection surface 92b. Reflect toward you. Further, the prism PZ transmits the laser light emitted from the blue laser light source LD3 toward the light receiving element PD, and reflects a part of the laser light toward the output lens 6 by the reflection surface 92b.
- the prism PZ superimposes the emitted light from each laser light source LD, and supplies the superposed laser light to the output lens 6 and the light receiving element PD, respectively.
- the prism PZ is a plan view shown in FIG. 1 and includes a light receiving element PD and a green laser light source LD2 and a blue laser light source LD3 in the Y direction, and an output lens 6 and a red laser light source LD1 in the X direction. Installed between.
- the red laser light source LD1 is a laser light source in a chip state and emits red laser light.
- the red laser light source LD1 is arranged on a substantially straight line with the prism PZ and the output lens 6 in the case part 3 in the X direction, and is fixed on a mount part 30 shown in FIG.
- the green laser light source LD2 is a laser light source in a chip state and emits green laser light.
- the green laser light source LD2 is fixed on the mount 30 at a position where the emitted laser light is reflected toward the output lens 6 by the reflecting surface 92a.
- the blue laser light source LD3 is a laser light source attached to the CAN package, and emits blue laser light.
- the blue laser light source LD3 has a semiconductor laser light source chip B that generates blue laser light in a CAN package, and is fixed by being fitted into a hole formed in the side surface portion 37a of the case portion 3.
- the blue laser light source LD3, the reflecting surface 92b, and the light receiving element PD are arranged so as to be positioned on a substantially straight line in the Y direction in the plan view shown in FIG.
- the blue laser light source LD3 may be attached to the frame package. Further, instead of the blue laser light source LD3, the red laser light source LD1 or the green laser light source LD2 may be attached to the CAN package or the frame package. Alternatively, the blue laser light source LD3 may be a chip-state laser light source, similar to the red laser light source LD1 and the green laser light source LD2, and all the laser light sources may be chip-state laser light sources.
- the output lens 6 is a collimator lens that converts the laser light incident from the prism PZ into parallel light and emits the parallel light to the MEMS mirror 10.
- the output lens 6 is fixed by being fitted into a hole formed in the side surface portion 37b orthogonal to the side surface portion 37a where the blue laser light source LD3 is installed, for example, with a UV-based adhesive.
- the output lens 6 is an example of the “output unit” in the present invention.
- the image signal input unit 2 receives an image signal input from the outside and outputs it to the control unit 20.
- the MEMS mirror 10 reflects the laser light emitted from the laser light source module 100 toward the screen 11. Further, the MEMS mirror 10 is rotated so as to scan on the screen 11 under the control of the control unit 20 in order to display the image input to the image signal input unit 2, and the scanning position information 10 x (for example, the corresponding one) Information such as the angle of the mirror) is output to the control unit 20.
- the scanning position information 10 x for example, the corresponding one
- Information such as the angle of the mirror
- the light receiving element (photodiode) PD is a photodetector for monitoring the intensity of the laser beam synthesized by the prism PZ.
- a predetermined surface of the light receiving element PD is bonded to the printed circuit board 5.
- the light receiving element PD is placed in the storage unit 40. Thus, the light receiving element PD is placed at a position that is not sealed by the case portion 3 and the sealing transparent cover 4.
- the light receiving element PD generates a current or voltage signal Spd (also referred to as “detection signal”) corresponding to the intensity of the received laser beam, and sends the detection signal Spd to the control unit 20 via the printed circuit board 5. Supply.
- the printed circuit board 5 is fixed on the surface 41 of the sealing transparent cover 4, which is the surface opposite to the surface facing the case portion 3, so as to cover the storage portion 40.
- the printed circuit board 5 is electrically connected to the control unit 20 and the light receiving element PD.
- the control unit 20 includes a CPU (Central Processing Unit), a RAM (Random Access Memory), a ROM (Read Only Memory), a frame memory, and the like, and performs general control of the laser light source unit 1. For example, the control unit 20 performs drive control of the MEMS mirror 10 and the laser light source LD based on the image signal input from the image signal input unit 2 and the scanning position information 10x input from the MEMS mirror 10. The control unit 20 monitors the quality of the laser beam based on the detection signal supplied from the light receiving element PD.
- a CPU Central Processing Unit
- RAM Random Access Memory
- ROM Read Only Memory
- FIG. 2 illustrates the laser light source module 100 from the direction of the arrow “Y1” in FIG.
- FIG. 3 is a cross-sectional view of the laser light source module 100 taken along the cutting plane Aa-Ab shown in FIG. In FIG. 2, for convenience of explanation, the case portion 3 is shown through a broken line.
- the vertical upper direction “VH” refers to the direction in which the sealing transparent cover 4 is present with respect to the mount portion 30, and the vertical lower direction “VL” refers to the opposite direction.
- a mount portion 30 for adjusting the positions of the red laser light source LD1, the green laser light source LD2, and the prism PZ is provided on the bottom 38 of the case portion 3.
- the height of light input / output from the red laser light source LD1, the green laser light source LD2, and the prism PZ with respect to the vertical upward direction VH is adjusted.
- the sealed transparent cover 4 is formed on the bottom surface 411 of the storage unit 40 and includes a protruding portion 44 to which the condenser lens 60 and the reflection mirror 61 are fixed.
- the projecting portion 44 has a hexahedral shape formed in the vertical downward direction VL with respect to the bottom surface 411 of the storage portion 40.
- the protruding portion 44 is provided with the condenser lens 60 on the prism facing side surface 440 facing the prism PZ.
- the protruding portion 44 has a slope 441 that faces the prism-facing side surface 440 and forms an angle of about 45 degrees with the bottom surface 411 in the side view of FIG.
- a reflection mirror 61 that reflects the laser light transmitted from the condensing lens 60 through the protruding portion 44 in the vertical upward direction VH is attached.
- the reflection mirror 61 may be integrally formed with the slope 441.
- the protruding portion 44 and the storage portion 40 are used when a chip to be placed on the case portion 3 such as the prism PZ or the laser light source LD is attached in a state where the case portion 3 is sealed with the sealing transparent cover 4. It is designed to use the necessary jig space.
- the condensing lens 60 condenses so that the laser light emitted from the prism PZ is directed to the reflecting mirror 61.
- the reflection mirror 61 reflects the laser light that has passed from the condenser lens 60 substantially parallel to the bottom surface 411 toward the light receiving element PD existing in the vertical upward direction VH.
- the light receiving element PD generates a detection signal Spd corresponding to the incident laser light.
- the light receiving element PD is attached to the sealing transparent cover 4, unlike the prism PZ and each laser light source LD attached to the case portion 3. Accordingly, the protrusions (see protrusions 208A and B in FIGS. 8A to 8C) necessary for mounting the light receiving element PD, and the jig between the protrusion and the laser light source LD. It is not necessary to provide the case portion 3 with a space (see the arrow 205 in FIGS. 7C and 8B). Therefore, the laser light source module 100 can be reduced in size.
- the sealing transparent cover 4 and the light receiving element PD, the condensing lens 60 and the reflecting mirror 61 attached to the sealing transparent cover 4 are required to be mounted when the chip-shaped laser light source LD is attached to the case section 3. It is designed in a position that utilizes the jig space. Therefore, the laser light source module 100 can be reduced in size.
- the light receiving element PD is accommodated in the accommodating portion 40 formed in a concave shape with respect to the surface 41 of the sealing transparent cover 4, and is disposed at a position not sealed in the case portion 3 by the sealing transparent cover 4. Accordingly, the laser light source module 100 does not require a lead frame because the light receiving element PD is directly bonded to the printed circuit board 5. Therefore, the laser light source module 100 can be reduced in size by not installing the lead frame.
- the printed circuit board 5 supports the light receiving element PD in a state of extending on the same surface as the surface 41. That is, the printed circuit board 5 is bonded to the light receiving element PD and is attached to the surface 41 without being bent. Therefore, in the above-described embodiment, the printed circuit board 5 is not subjected to bending stress.
- the light receiving element PD is accommodated in the accommodating portion 40 formed in a concave shape with respect to the surface 41 of the sealing transparent cover 4.
- the space in the case part 3 can be used effectively and the laser light source module 100 can be reduced in size.
- the light receiving element PD receives laser light through a condensing lens 60 having a light condensing property. Therefore, the laser light source module 100 can increase the light receiving efficiency by including the condenser lens 60.
- FIG. 4 is an example of a flowchart showing a procedure for assembling the laser light source module 100.
- a CAN laser that is, a blue laser light source LD3 is attached to the case part 3 to which the prism PZ is previously attached (step S1). At this time, the CAN laser is only fixed at a predetermined mounting position with respect to the case portion 3, and no other adjustment is performed.
- step S2 the attachment position of the output lens 6 with respect to the case portion 3 is adjusted (step S2). Specifically, is the position of the emitted light of the blue laser light source LD3 matched with the target position on the target provided outside the laser light source module 100, or whether the light diameter on the target is a predetermined size? Judge whether or not.
- step S3 the position of the emitted light matches the target position and the light diameter is a predetermined size
- step S4 the position of the emitted light matches the target position and the light diameter is a predetermined size
- step S3 the position of the emitted light matches the target position and the light diameter is a predetermined size
- step S3; No the attachment position of the output lens 6 is continuously adjusted in step S2. To do.
- the fixing position of either the red laser light source LD1 or the green laser light source LD2 (hereinafter also referred to as “first chip”) is adjusted with respect to the case portion 3 (step S5).
- the first chip is grasped with a chuck or the like, and the stylus is dropped and turned on so that the emitted light of the first chip matches the position and light diameter of the emitted light of the blue laser light source LD3 on the target.
- the first chip is fixed with solder or the like (step S7).
- the position of the first chip is adjusted in step S5.
- step S8 the fixing position of the laser light source LD (also referred to as “second chip”) not fixed in step S7 is adjusted (step S8).
- the second chip emits light from the blue laser light source LD3 and the first chip on the target while holding the second chip with a chuck or the like and dropping the stylus to turn it on. Adjust to match the position and light diameter. If the emitted light from the second chip matches the position and the light diameter of the emitted light from the blue laser light source LD3 and the first chip on the target (step S9; Yes), the second chip is fixed by soldering or the like ( Step S10).
- step S9 when the emitted light from the second chip does not coincide with the position and the light diameter of the emitted light from the blue laser light source LD3 and the first chip on the target (step S9; No), the second chip continues to the step S8. Adjust the position.
- the sealing transparent cover 4 is attached to the case part 3 (step S11). Thereby, the inside of the case part 3 is sealed by the sealing transparent cover 4. Then, the position of the light receiving element PD fixed in advance to the printed circuit board 5 is adjusted (step S12). Specifically, it is determined whether the laser beam synthesized by the prism PZ is accurately detected while holding the light receiving element PD and the printed circuit board 5 with a chuck or the like and monitoring the detection signal Spd of the light receiving element PD. . Thereby, the light receiving element PD is adjusted to a position where the laser beam synthesized by the prism PZ and reflected by the reflecting mirror 61 reaches.
- step S13 When it is determined that the laser light is detected by the light receiving element PD (step S13; Yes), the printed circuit board 5 is fixed to the surface 41 of the sealing transparent cover 4 using an adhesive or the like (step S14). On the other hand, when it is determined that the laser beam is not correctly detected by the light receiving element PD (step S13; No), the position of the light receiving element PD is subsequently adjusted in S12.
- the light receiving element PD is adjusted with respect to the sealing transparent cover 4 after the sealing transparent cover 4 is attached to the case portion 3. . Therefore, in this case, a space for the jig required for attaching the light receiving element PD with a jig such as a chuck is not required inside the case portion 3. Therefore, the laser light source module 100 can be downsized.
- FIGS. 1 to 3 (also referred to as “first configuration example”) is an example, and the configuration of the laser light source module 100 to which the present invention is applicable is not limited to this.
- a second configuration example and a third configuration example which are other configuration examples of the laser light source module 100 applicable to the present invention, will be described with reference to FIGS.
- symbol is attached
- FIG. 5 is an example of a cross-sectional view of the laser light source module 100 corresponding to FIG. 3 according to the second configuration example. As shown in FIG. 5, the laser light source module 100 according to the second configuration example is different from the first configuration example in that it does not include the reflection mirror 61.
- the housing portion 40A in which the light receiving element PD is installed extends to a range in which the light emitted from the prism PZ can reach with reference to the vertical downward direction VL.
- the condensing lens 60 is fixed to the prism facing side surface 400 that is the outer surface of the housing portion 40A and faces the prism PZ.
- the light receiving element PD is fixed in a position that is substantially linear with the prism PZ and the condensing lens 60 in the housing portion 40A. In other words, the light receiving element PD is provided at a position where laser light emitted from the prism PZ and passing through the condenser lens 60 can enter.
- the printed circuit board 5 has a cover adhesive portion 51 that adheres to the surface 41 and a light receiving element adhesive portion 52 that adheres to the light receiving element PD on the same surface. As shown in FIG. 5, the cover bonding portion 51 and the light receiving element bonding portion 52 extend in a direction in which they are perpendicular to each other. Therefore, the printed circuit board 5 is fixed in a state bent toward the extending direction of the surface 41 and the vertical downward direction VL. Then, the detection signal generated by the light receiving element PD is supplied to the control unit 20 via the printed circuit board 5.
- FIG. 6 is an example of a cross-sectional view of the laser light source module 100 corresponding to FIG. 3 according to the third configuration example.
- the laser light source module 100 according to the third configuration example is different from the first configuration example in that the condensing lens 60 and the reflection mirror 61 are not included. Different from the second configuration example.
- the light receiving element PD is fixed in a position that is substantially linear with the prism PZ and the condenser lens 60 in the housing portion 40A.
- the The laser light emitted from the prism PZ passes through the prism facing side surface 400 and enters the light receiving element PD.
- the printed circuit board 5 includes a cover adhesion portion 51 that adheres to the surface 41 and a light-receiving element adhesion portion 52 that adheres to the light-receiving element PD. It is fixed in a state bent toward the VL. Then, the detection signal generated by the light receiving element PD is supplied to the control unit 20 via the printed circuit board 5.
- the laser light source module 100 includes the printed circuit board 5 in which the light receiving element PD is attached to the sealing transparent cover 4 and directly connected to the light receiving element PD.
- the detection signal of the laser beam synthesized by the prism PZ is supplied to the control unit 20 via. Therefore, also in the second configuration example and the third configuration example, the laser light source module 100 does not require the space of the jig required for mounting the light receiving element PD with a jig such as a chuck inside the case portion 3. Therefore, downsizing is realized.
- the laser light source module 100 according to the second configuration example and the third configuration example does not require a lead frame, and thus can be reduced in size as compared with a configuration that requires a lead frame.
- the present invention is suitably applied to a light source unit of a head-up display and other light source modules that serve as a light source when projecting images and images.
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Abstract
Description
次に、レーザ光源モジュール100の製造方法について、図4を参照して説明する。図4は、レーザ光源モジュール100を組み立てる手順を示すフローチャートの一例である。
図1乃至図3で示した構成(「第1構成例」とも呼ぶ。)は一例であり、本発明が適用可能なレーザ光源モジュール100の構成は、これに限定されない。ここで、図5及び図6を参照して、本発明に適用可能なレーザ光源モジュール100の他の構成例である第2構成例及び第3構成例について説明する。なお、第1構成例と同様の部分については、適宜同一の符号を付し、その説明を省略する。
2 画像信号入力部
3 ケース部
4 封止透明カバー
5 プリント基板
6 出力用レンズ
11 スクリーン
20 コントロールユニット
100 レーザ光源モジュール
LD1 赤色レーザ光源
LD2 緑色レーザ光源
LD3 青色レーザ光源
PZ プリズム
PD フォトダイオード
Claims (6)
- それぞれ波長が異なる複数のレーザ光源と、
前記レーザ光源から出射されたレーザ光を重ね合わせる合成素子と、
前記合成素子によって重ね合わせたレーザ光を出力する出力部と、
前記レーザ光源から出射されたレーザ光をモニタするための受光素子と、
前記複数のレーザ光源と前記合成素子とを収納するケース部と、
前記ケース部を封止する封止部と、を備え、
前記受光素子は、前記封止部に取り付けられていることを特徴とするレーザ光源モジュール。 - 前記レーザ光を集光して前記受光素子に入射させる集光レンズを備え、
前記集光レンズは、前記封止部に取り付けられていることを特徴とする請求項1に記載のレーザ光源モジュール。 - 前記集光レンズによって集光された光を反射して前記受光素子に入射させる反射ミラーを備え、
前記反射ミラーは、前記封止部に取り付けられているか当該封止部と一体形成されていることを特徴とする請求項2に記載のレーザ光源モジュール。 - 前記封止部は、前記レーザ光が透過可能であり、
前記受光素子は、前記ケース部と前記封止部とにより封止されない位置に取り付けられ、
前記受光素子と接着し、前記受光素子が生成した信号を伝送するプリント基板をさらに備えることを特徴とする請求項1乃至3のいずれか一項に記載のレーザ光源モジュール。 - 前記封止部は、前記ケース部と対向する面の反対面に凹部を有し、
前記プリント基板は、前記凹部を覆う位置であって、前記受光素子が前記凹部に収納される位置に、前記反対面に対して接着されることを特徴とする請求項4に記載のレーザ光源モジュール。 - それぞれ波長が異なる複数のレーザ光源と、
前記レーザ光源から出射されたレーザ光を重ね合わせる合成素子と、
前記レーザ光源から出射されたレーザ光をモニタするための受光素子と、
前記複数のレーザ光源と前記合成素子とを収納するケース部と、
前記ケース部を封止する封止部と、を備え、前記合成素子によって重ね合わせたレーザ光を出力するレーザ光源モジュールの製造方法であって、
前記複数のレーザ光源と、前記合成素子とを前記ケース部に取り付ける第1工程と、
前記第1工程の実行後、前記ケース部を封止する位置に、前記封止部を取り付ける第2工程と、
前記第2工程の実行後、前記受光素子を前記封止部に取り付ける第3工程と、
を備えることを特徴とするレーザ光源モジュールの製造方法。
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JP2011543945A JP4898981B1 (ja) | 2010-10-20 | 2010-10-20 | レーザ光源モジュール及びレーザ光源モジュールの製造方法 |
US13/880,852 US8876327B2 (en) | 2010-10-20 | 2010-10-20 | Laser light source module and method of manufacturing laser light source module |
PCT/JP2010/068463 WO2012053070A1 (ja) | 2010-10-20 | 2010-10-20 | レーザ光源モジュール及びレーザ光源モジュールの製造方法 |
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US11557873B2 (en) | 2020-09-30 | 2023-01-17 | Nichia Corporation | Light emitting device |
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Citations (4)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JPS61131581A (ja) * | 1984-11-30 | 1986-06-19 | Sharp Corp | 半導体レ−ザ装置 |
JP2001184706A (ja) * | 1999-12-27 | 2001-07-06 | Sanyo Electric Co Ltd | 光ピックアップ装置、およびそれを用いた光ディスク装置 |
JP2008010837A (ja) * | 2006-05-29 | 2008-01-17 | Fujikura Ltd | 光通信モジュールとその製造方法及び光送受信装置 |
JP2009295690A (ja) * | 2008-06-03 | 2009-12-17 | Jtekt Corp | レーザ発振装置 |
Family Cites Families (6)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JPH11273138A (ja) | 1998-03-25 | 1999-10-08 | Sony Corp | 光半導体装置および光学ピックアップ |
JP2003069125A (ja) | 2001-08-27 | 2003-03-07 | Fujitsu Ltd | 光集積素子、光学ヘッド及び光学ヘッドの製造方法 |
JP2006054366A (ja) * | 2004-08-13 | 2006-02-23 | Fuji Photo Film Co Ltd | レーザモジュール |
JP2006286866A (ja) * | 2005-03-31 | 2006-10-19 | Fuji Photo Film Co Ltd | レーザモジュール |
JP2007035884A (ja) | 2005-07-26 | 2007-02-08 | Matsushita Electric Ind Co Ltd | 半導体レーザ装置及び半導体レーザ装置の製造方法 |
CN102109646B (zh) | 2007-05-14 | 2013-10-23 | 株式会社藤仓 | 光收发装置 |
-
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Patent Citations (4)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JPS61131581A (ja) * | 1984-11-30 | 1986-06-19 | Sharp Corp | 半導体レ−ザ装置 |
JP2001184706A (ja) * | 1999-12-27 | 2001-07-06 | Sanyo Electric Co Ltd | 光ピックアップ装置、およびそれを用いた光ディスク装置 |
JP2008010837A (ja) * | 2006-05-29 | 2008-01-17 | Fujikura Ltd | 光通信モジュールとその製造方法及び光送受信装置 |
JP2009295690A (ja) * | 2008-06-03 | 2009-12-17 | Jtekt Corp | レーザ発振装置 |
Cited By (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US11557873B2 (en) | 2020-09-30 | 2023-01-17 | Nichia Corporation | Light emitting device |
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JPWO2012053070A1 (ja) | 2014-02-24 |
US20130208465A1 (en) | 2013-08-15 |
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