KR100585065B1 - Optical output module and compatible optical pickup device - Google Patents

Abstract

Disclosed are an optical output module packaged with two light sources for irradiating light of different wavelengths and a compatible optical pickup device employing the same.

The disclosed light output module includes a substrate, first and second light sources installed on the substrate at predetermined intervals from each other, and irradiating laser light of the first and second wavelengths on both sides thereof, and between the first light source and the second light source. A reflecting member disposed on a substrate of the reflecting member for reflecting the laser light emitted from one side of each of the first and second light sources to be directed in one direction, and the laser light emitted from the other side of each of the first and second light sources. And a photodetector for the first and second monitors that receives the light and monitors the light output of the first and second light sources. The compatible optical pickup apparatus includes an optical output module having the above configuration; An objective lens disposed on an optical path between the optical output module and the optical recording medium to focus incident first and second laser light onto the optical recording medium; Optical path converting means disposed on an optical path between the optical output module and the objective lens to convert a traveling path of the incident light; A grating disposed on an optical path between the optical output module and the optical path converting means and diffracting and transmitting incident light; Light detecting means for receiving the light incident through the optical path changing means after being irradiated from the first and second light sources and reflected from the optical recording medium; And a hologram element disposed on an optical path between the optical path changing means and the light detecting means and diffracting and transmitting incident light.

Description

Light emitting module and compatible optical pickup apparatus employing it

1 is a schematic view showing an optical arrangement of a conventional compatible optical pickup device.

2 is a schematic cross-sectional view showing a first optical module employed in FIG.

3 is a schematic plan view showing an optical arrangement of the light output module according to an embodiment of the present invention.

4 is a schematic cross-sectional view of an optical output module according to an embodiment of the present invention.

5 is a schematic view showing an optical arrangement of a compatible optical pickup device according to an embodiment of the present invention.

6 is a schematic view showing an optical arrangement of the light detecting means of the compatible optical pickup device according to an embodiment of the present invention.

<Description of Symbols for Main Parts of Drawings>

1 ... optical recording medium 100 ... optical output module

111 ... substrate 113 ... base

115 ... Reflector 121 ... First light source

125 ... photodetector for first monitor 131 ... second light source

135 ... Photodetector for second monitor 151 ... Grating

153 ... optical conversion means 154 ... beam splitter

155 collimating lens 157 mirror

159 ... Objective lens 161 ... Hologram element

170 ... photodetector means 171 ... first photodetector

173 ... second photodetector 175 ... third photodetector

177 ... fourth photodetector

The present invention relates to an optical output module for outputting laser light, and a compatible optical pickup device employing the same. Specifically, an optical output module packaged two light sources for outputting two different light wavelengths into a single module and the same The present invention relates to a compatible optical pickup apparatus capable of employing compatible recording media having different formats.

In general, an optical pickup device is employed in a compact disc player (CDP), a CD-ROM driver, a digital multi-function disc player (DVDP), a DVD-ROM driver, or the like to perform recording / reproducing of information on a recording medium in a non-contact manner.

DVDP and DVD-ROM are attracting attention in the video / audio field as devices capable of high-density recording / playback. The optical pickup device employed in this DVDP is a recording medium for compatibility, as well as a digital video disk (DVD), but also a compact disk (CD), CD-R (Recordable), CD-RW, CD-I, CD-G, etc. In the case of adopting the CD family, information should be recorded and / or reproduced.

However, the thickness of the DVD has been standardized to a different specification from the thickness of the CD family due to mechanical disc tilt tolerance and objective lens numerical aperture. That is, the thickness of the existing CD family is 1.2mm while the DVD is 0.6mm. As such, when the CD family and the DVD have different thicknesses, spherical aberration due to the difference in thickness occurs when the optical pickup apparatus for DVD is applied to the CD family. This spherical aberration causes problems that the light intensity necessary for recording the information signal is not obtained or the signal at the time of reproduction is degraded.

Also, in the wavelength of the reproduction light source, DVD has been standardized into a wavelength range different from that of the CD family. That is, while the reproduction light source wavelength for the existing CD family is approximately 780 nm, the reproduction light source wavelength for DVD is approximately 650 nm.

Due to this difference in standardization, since information recorded on a DVD cannot be reproduced by a normal CDP, development of an optical pickup device for a DVD is required. At this time, the optical pickup device for DVD should be compatible with the existing CD family.

As described above, the conventional compatible optical pick-up apparatus considering the above points includes a first optical module 20 for irradiating light of 650 nm wavelength and a second optical module for irradiating light of approximately 780 nm wavelength as shown in FIG. 1. 30, first and second beam splitters 12 and 14 for converting a traveling path of the light irradiated from the first and second optical modules 20 and 30, and the incident light to the disk 1. A photodetector 40 reflecting from the objective lens 11 and the disk 1 for focusing the light, and receiving light incident through the second beam splitter 14 and the first beam splitter 12. It is configured to include. Here, the first optical module 20 is for a relatively thin disk 1a, for example, a DVD, and the second optical module 30 is for a relatively thick disk 1b, for example, a CD family.

As shown in FIG. 2, each of the first optical modules 20 includes a base 21 on which a plurality of lead pins 27 are installed, a heat sink 22 provided on the base 21, and the heat. Monitor light installed on the side of the sink 22 and the base 21, the monitor light for receiving the light irradiated to the rear of the light source 23 to monitor the light output of the light source 23 And a can 29 having a detector 25 and a projection window 28 and surrounding the light source 23 and the monitor photodetector 25. Since the monitor photodetector 25 uses the back light irradiated from the light source 23 to the back, the upper limit value of the reflectance of the light source 23 is approximately 50 to 50 in consideration of the back light output of the light source 23. You need to limit it to 60%.

Since the second optical module 30 is substantially the same as the components of the first optical module 20, detailed description thereof will be omitted. However, the light source employed is distinguished from the optical module 20 in that the light of approximately 780 nm wavelength is irradiated.

The first beam splitter 12 has a flat plate-like structure, and reflects the light emitted from the first light source 20 to face the second beam splitter 14. The second beam splitter 14 has a cubic structure having a mirror surface configured to transmit or reflect incident light.

The light irradiated from the first optical module 20 is reflected by the first beam splitter 12 and passes through the second beam splitter 14 toward the disk 1, and the second optical module 30 The light irradiated from the second beam is reflected by the second beam splitter 14 and then focused by the objective lens 11 to form the disk 1. Here, a grating 13 for diffracting incident light is disposed between the second optical module 30 and the second beam splitter 14.

On the optical path between the second beam splitter 14 and the objective lens 11, a reflecting mirror 15 reflecting incident light in consideration of optical arrangement and a collimating lens 16 focusing the incident light are disposed.

The light irradiated from the first optical module 20 is received by the photodetector 40 after being reflected by the relatively thin disk 1a, and the light irradiated from the second optical module 30 has a thickness. The light is reflected by the photodetector 40 after being reflected by the relatively thick disk 1b. That is, each of the reproduction signals (Radio Frequency signals) of the light emitted from the first and second optical modules 20 and 30 is detected through one photodetector 40. In this case, a sensor lens 17 is disposed between the first beam splitter 12 and the photodetector 40.

The first and second optical modules 20 and 30 and the photodetector 40 of the compatible optical pickup device configured as described above will be described below.

First, the first optical module 20 in which the semiconductor laser 23 for irradiating light having a wavelength of 650 nm is fixed is fixed and emitted from the first optical module 20, and then the first and second beam splitters 12 are fixed. 14) and the optical lens 40 to adjust the photodetector 40 to enable servo and RF signal reproduction by placing the light reflected from the disk via the objective lens 11 onto the photodetector 40, and then adjusting the adjusted photodetector ( The second optical module 30 is adjusted such that the light incident on the second optical module 30 after the 40 is irradiated through the disk 1 is accurately formed.

Therefore, the conventional compatible optical pickup device configured as described above has the following disadvantages.

First, since at least one element of the first optical module, the photodetector, and the second optical module must be adjusted, the assemblability is degraded and the assembling defect is increased.

Second, miniaturization is difficult by employing the first and second optical modules in separate locations.

Third, circuit wiring is complicated because two monitoring photodetectors are required to adjust the light output of each light source.

SUMMARY OF THE INVENTION The present invention has been made in view of the above-described disadvantages, and an object thereof is to provide an optical output module having a structure of simplifying an optical configuration and reducing a number of components and a compatible optical pickup apparatus employing the same.

Optical output module according to the present invention for achieving the above object, the substrate; A first light source provided on the substrate, the first light source irradiating laser light of one wavelength to opposite sides facing each other; A first light source provided on the substrate with a predetermined distance from the first light source, and irradiating laser light having a wavelength different from that emitted from the first light source to opposite sides facing each other; A reflection member disposed on the substrate between the first light source and the second light source and reflecting the laser light emitted from one side of each of the first and second light sources to face in one direction; First and second monitor photodetectors for receiving laser light emitted from the other side of each of the first and second light sources to monitor light output of the first and second light sources; A package frame surrounding the substrate, the first and second light sources, the reflective member, and the photodetectors for the first and second monitors; And a lead frame formed through the package frame and wire-bonded to the first and second light sources and the photodetectors for the first and second monitors.

In addition, the compatible optical pickup device according to the present invention for achieving the above object, is installed on the substrate and spaced apart from each other by a predetermined interval and irradiating laser light of the first and second wavelengths on both sides. First and second light sources, disposed on the substrate between the first light source and the second light source, reflecting the laser light emitted from one side of each of the first and second light sources to be directed in one direction; Light output including a reflecting member and first and second monitor photodetectors for receiving laser light emitted from the other side of each of the first and second light sources to monitor the light output of the first and second light sources. A module; An objective lens disposed on an optical path between the optical output module and the optical recording medium to focus incident first and second laser light onto the optical recording medium; Optical path converting means disposed on an optical path between the optical output module and the objective lens to convert a traveling path of incident light; A grating disposed on an optical path between the optical output module and the optical path converting means to diffract incident light; Light detecting means for receiving the light incident through the optical path changing means after being irradiated from the first and second light sources and reflected from the optical recording medium; And a hologram element disposed on an optical path between the optical path converting means and the light detecting means and diffracting and transmitting incident light.

Hereinafter, exemplary embodiments of an optical output module and a compatible optical pickup apparatus employing the same according to the present invention will be described in detail with reference to the accompanying drawings.

3 and 4, the optical output module 100 according to the present invention includes a substrate 111 and first and second electrodes disposed on the substrate 111 and irradiating laser light in different wavelength regions. Light sources 121 and 131, reflective members 115 for directing the light emitted from the first and second light sources 121 and 131 to one direction, and the first and second light sources 121. First and second monitor photodetectors 125 and 135 for receiving light emitted from each of the first and second light sources 121 and 131 and monitoring the light output of the first and second light sources 121 and 131. 141 and a lead frame 145.

The substrate 111 is made of a silicon material, and an internal space in which the first and second light sources 121 and 131 and the first and second monitor photodetectors 125 and 135 provided by etching are mounted. Has

The first light source 121 is installed in the interior space of the substrate 111 and irradiates laser light of one wavelength, for example, 650 nm wavelength, to both sides facing each other. The light in one direction of the light irradiated in two directions from the first light source 121 is directed toward the reflective member 115, and the light in the other direction is directed toward the first monitor photodetector 125.

The second light source 131 is provided on the substrate 111 at a predetermined interval from the first light source 121 and irradiates laser light having a predetermined wavelength, for example, a wavelength of 780 nm to both sides facing each other. . The light in one direction of the light irradiated in two directions from the second light source 131 is directed toward the reflective member 115, and the light in the other direction is directed toward the first monitor photodetector 135.

In this case, the first and second light sources 121 and 131 are formed at positions where the first and second light sources 121 and 131 are respectively attached to the internal space of the substrate 111 to attach the first and second light sources 121 and 131. It is preferable that a pair of guide grooves 111a and 111b are formed to guide the position. Therefore, by minimizing the attachment error of the first and second light sources 121 and 131 to the substrate 111, it is possible to precisely control the relative optical axis shift amount of the first and second light sources 121 and 131. have.

The reflective member 115 is disposed on the substrate 111 between the first light source 121 and the second light source 131, and at one side of each of the first and second light sources 121 and 131. The irradiated laser light is reflected and directed in one direction. The reflecting member 115 is formed integrally with the substrate 111 and is disposed at an inclined angle with respect to each of the first and second light sources 121 and 131, and the first and second surfaces 113a and 113b. First and second portions formed on the base 113 and the first and second surfaces 113a and 113b to reflect light incident from the first and second light sources 121 and 131, respectively. And two reflecting portions 115a and 115b.

을 유지한 채로 나란하게 진행한다.The base 113 is formed at the time of forming the internal space by etching the substrate 111, and is formed between the first surface 113a and the substrate 111 and the angle between the second surface 113b and the substrate 111. It is preferable that is 45 degrees. Here, since the silicon selected as the material of the substrate 111 has a cubic crystal structure, etching in the 45 ° direction is easy. The first and second reflecting portions 115a and 115b may be formed on the first and second surfaces 113a and 113b of the base 113 by reflective coating on a coating. Therefore, the two lights irradiated from the first and second light sources 121 and 131 and reflected from each of the first and second reflectors 115a and 115b are spaced between their respective optical axes.

Proceed side by side while maintaining.

In addition, in consideration of the change in the cross-sectional size of the emitted light due to the wavelength difference of the emitted light when the optical elements are emitted from the first and second light sources 121 and 131, the emission surface 131a of the second light source 131. And the length on the optical axis between the reflective member 115 is disposed to be relatively longer than the length on the optical axis between the exit surface 121a of the first light source 121 and the reflective member 115.

Each of the first and second monitor photodetectors 125 and 135 is disposed on the substrate 111 to receive light irradiated from each of the first and second light sources 121 and 131. The light output of each of the first and second light sources 121 and 131 is monitored. Here, each of the first and second monitor photodetectors 125 and 135 may be manufactured through a semiconductor process of stacking a p-type semiconductor layer and an n-type semiconductor layer at a corresponding position on the substrate 111. . Meanwhile, the first and second monitor photodetectors 125 and 135 may be manufactured by a semiconductor process on a separate substrate (not shown) and then bonded to the sidewall of the substrate.

The package frame 141 surrounds the substrate 111, the first and second light sources 121 and 131, the reflective member 115, and the photodetectors 125 and 135 for the first and second monitors. Package it. The package frame 141 is made of a material such as mold resin.

The lead frame 145 is formed through the package frame 141, and the first and second light sources 121 and 131, and the photodetectors 125 and 135 for the first and second monitors. Once this is wire bonded. The lead frame 145 includes one lead for grounding the substrate 111, two leads for providing driving power to each of the first and second light sources 121 and 131, and first and second monitors. It consists of one lead for transferring the electrical signal detected by the photodetectors 125, 135. Here, since the first and second light sources 121 and 131 are selectively driven, one lead may be commonly used for the first and second monitor photodetectors 125 and 135.

5 and 6, a compatible optical pickup apparatus according to the present invention includes an optical output module 100 and an objective lens for focusing light emitted from the optical output module 100 onto the optical recording medium 1. 159, an optical path converting means 153 for converting a traveling path of incident light, and a grating disposed on an optical path between the optical output module 100 and the optical path converting means 153 to diffract and transmit incident light 151 and light detecting means 170 for receiving light incident through the optical path converting means 153 after being irradiated from the optical output module 100 and reflected by the optical recording medium 1; It comprises a hologram element 161 disposed on the optical path between the optical path converting means 153 and the light detecting means 170.

As described with reference to FIGS. 3 and 4, the optical output module 100 includes a substrate 111 and first and second electrodes disposed on the substrate 111 and irradiating laser light in different wavelength regions. Two light sources 121 and 131, a reflective member 115 for directing the light emitted from the first and second light sources 121 and 131 to one direction, and the first and second light sources 121. First and second monitor photodetectors 125 and 135 for receiving light emitted from each of the first and second light sources 121 and 131 and monitoring the light output of the first and second light sources 121 and 131. 141 and a lead frame 145. Here, the substrate 111, the first and second light sources 121 and 131, the reflective member 115, the photodetectors 125 and 135 for the first and second monitors, the package frame 141, Arrangement and configuration of the lead frame 145 is substantially the same as described above, so a detailed description thereof will be omitted.

The first light source 121 is an optical recording medium 1 that is used when a relatively thin optical disk 1a such as a DVD is employed and emits light in an area of about 635 to 650 nm. The second light source 131 emits light in the region of about 780 nm, which is used when a relatively thick optical disk 1b, for example, CD, is employed as the optical recording medium 1. In addition, the length on the optical axis between the emission surface of the second light source 131 and the reflective member 115 is relatively longer than the length on the optical axis between the emission surface of the first light source 121 and the reflective member 115. Preferably, the first and second light sources 121 and 131 are disposed to be long.

The grating 151 is disposed on an optical path between the optical output module 100 and the optical path converting means 153, so that the incident light, in particular, the light irradiated from the second light source 131 is 0-order light or ± 1-order light. Diffuse it with, ... This makes it possible to detect the track error signal of the light reflected from the relatively thick optical recording medium 1 by the three beam method.

The optical path converting means 153 is composed of a beam splitter 154 having a structure as shown. The beam splitter 154 directs the light emitted from the optical output module 100 to the optical recording medium 1, and the light reflected from the optical recording medium 1 is detected by the optical detection means 170. Convert the path of light to face

The hologram element 161 is disposed on an optical path between the beam splitter 154 and the light detecting means 170 to diffract and transmit incident light by +1 order light and -1 order light. Since the + 1st order light and the -1st order light separated from the hologram element 161 form different focal positions, they are used to detect the focus error signal by the astigmatism method. That is, during on focus, the +1 order light diffracted by the hologram element 161 is focused in front of the light detecting means 170, and the -1 light order is behind the light detecting means 170. Will come into focus. Here, the diffraction direction in the grating 151 and the diffraction direction in the hologram element 161 are preferably arranged to be perpendicular to each other.

The photodetector 170 is composed of first to fourth photodetectors 171, 173, 175, and 177 each consisting of ten split plates that independently photoelectrically convert.

배열을 갖는 네 분할판(A, B, C, D)과, 상기 분할판(A, B)과 분할판(C, D) 사이에 배치된 하나의 분할판(G1)을 포함한다. 여기서, 상기 제1광검출기(171)의 분할판(A, D)과 분할판(B, C) 사이의 경계 부분은 온(On) 트랙시 상기 제1광원(121)에서 조사되어 상기 제1광검출기(171)에 맺힌 광스폿(S11)의 중심이 지나는 부분에 맞추어 위치된다.The first and second photodetectors 171 and 173 are disposed to be spaced apart from each other at predetermined intervals, diffracted to zero order light in the grating 151, and again +1 order and -1 order light in the hologram element 161. The light diffracted by the light is received. The first photodetector 171 detects a track error signal TES for the optical recording medium 1a having a relatively thin thickness by a phase difference method.

Four partition plates A, B, C, D having an arrangement, and one partition plate G1 disposed between the partition plates A, B and the partition plates C, D are included. Here, the boundary portion between the divider plates A and D and the divider plates B and C of the first photodetector 171 is irradiated from the first light source 121 during the on-track, so that the first portion is exposed. The center of the light spot S11 formed on the photodetector 171 is positioned to pass.

The second photodetector 173 includes three split plates G2, H, and G3 divided into three sections to detect the focus error signal FES by differential from the signal detected by the first photodetector 171. do.

The third and fourth photodetectors 175 and 177 are disposed to be spaced apart by a predetermined interval with the first and second photodetectors 171 and 173 interposed therebetween, and in the grating 151, the first order / The light diffracted to -1st order light and diffracted to + 1st order and -1st order light in the hologram element 161 are respectively received.

만큼 이격된 채로 맺힌다. 그리고, 상기 제2광검출기(173)에 수광되는 광에 있어서, 상기 제1광원(121)에서 조사되어 맺힌 광스폿(S12)은 상기 제2광원(131)에서 조사되어 맺힌 광스폿(S22)과 소정 간격

만큼 이격된 채로 맺힌다. Here, in the light received by the first photodetector 171, the light spot S11 irradiated and formed by the first light source 121 is a light spot S21 irradiated and formed by the second light source 131. And a predetermined interval

As far apart as possible. In the light received by the second photodetector 173, the light spot S12 irradiated and formed by the first light source 121 is irradiated and formed by the second light source 131. And a predetermined interval

As far apart as possible.

만큼 이격된 채로 배치된 것과, 홀로그램소자(161)에서 파장에 따른 회절각도 차이에 기인한 것이다. 특히, 간격

와

가 다른 것은 상기 홀로그램소자(111)에서 780nm 파장의 광이 650nm 파장의 광에 비하여 회절각도가 크므로 +1차광의 경우 두 개의 광의 시프트 양은 -1차의 경우보다 작아짐에 기인한 것이다.This is because the first and second light sources 121 and 131 are spaced apart from the substrate 111.

This is due to the spaced apart as much as the difference, and the diffraction angle difference according to the wavelength in the hologram element 161. In particular, the thickness

Wow

The difference is due to the fact that the light having a wavelength of 780 nm in the hologram element 111 has a diffraction angle larger than that of the 650 nm wavelength, so that the shift amount of the two lights is smaller in the +1 order light than in the -1 order light.

Through the first to fourth photodetectors 171, 173, 175, and 177, track error signals and focuses of two optical recording media 1a and 1b having different thicknesses, for example, DVD and CD, are focused. The error signal and the information signal are obtained by the following sum and difference.

DVD focus error signal = (G ₁ + G ₂ + G ₃ )-(A + B + C + D + H)

DVD Track Error Signal = (A + C) _Phase- (B + D) _Phase

CD focus error signal = (G ₁ + G ₂ + G ₃ )-(A + B + C + D + H)

CD track error signal = E-F

DVD, CD information signal = A + B + C + D + G + H

In addition, the optical pickup device according to the present invention reflects incident light on the path between the beam splitter 154 and the objective lens 159 to change the path by reflecting the incident light, and to focus the incident divergent light to parallel light It is preferable to further include an optical element such as collimating lens 155 to be.

As described above, the operation of the configured compatible optical pickup apparatus will be described.

When employing a relatively thin optical disk 1a such as a DVD as the optical recording medium 1, the light irradiated from the first light source 121 is used. That is, the light irradiated from the first light source 121 passes through the beam splitter 154 and then is reflected by the mirror 157 while being parallel light by the collimating lens 155 and then the objective lens. Head to (159). The objective lens 159 focuses the incident light onto the optical disk 1a having a relatively thin thickness. The light reflected from the optical disk 1a is directed to the beam splitter 154 via the objective lens 159, the mirror 157, and the collimating lens 155. After the light is reflected by the beam splitter 154, the first and fourth photodetectors 171, 173, 175 and 177 are diffracted by the +1 order light and the -1 order light in the hologram element 161. Bears on. The first to fourth photodetectors 171, 173, 175, and 177 are provided to an information signal for an optical disk 1a having a relatively small thickness from incident light, a track error signal by a phase difference method, and the hologram element. The focus error signal is detected by the astigmatism method.

The light irradiated to the rear side from the first light source 121 is formed in the first monitor photodetector 125, and is provided between the first monitor photodetector 125 and the first light source 121. An output control circuit (not shown) controls the light output of the first light source 121.

On the other hand, when the relatively thick optical disk 1b such as a CD is employed as the optical recording medium 1, the light irradiated from the second light source 131 is used. In this case, the light irradiated from the second light source 131 is diffracted into at least three beams by the grating 151, and then passes through the beam splitter 141 toward the optical recording medium 1. The light is focused by the objective lens 159 on the relatively thick optical disk 1b and then reflected, and is first to first through the objective lens 159, the beam splitter 154, and the hologram element 161. Four photodetectors 171 (173) (175) (177). The first to fourth photodetectors 171, 173, 175, and 177 are used to transmit information signals to the optical disk 1a having a relatively thick thickness from incident light, track error signals by a three-beam method, and the hologram element. The focus error signal is detected by the astigmatism method.

The light emitted from the second light source 131 to the rear side and transmitted through the beam splitter 154 is formed in the second monitor photodetector 135, and the second monitor photodetector 135 and the second monitor. The light output of the second light source 131 is controlled through a light output control circuit (not shown) provided between the light sources 131.

The optical output module and the compatible optical pickup device employing the same according to the present invention configured as described above have the following advantages.

First, since the first and second light sources are in one optical module, the man-hour of assembling the optical pickup device is as simple as the optical pickup device for DVD or CD only.

Second, since the light output signals obtained from the monitor photodetectors each provided for the plurality of wavelengths are controlled using one light output control circuit, the wiring of the light output control circuit is simplified.

Claims (11)

A substrate; A first light source provided on the substrate, the first light source irradiating laser light of one wavelength to opposite sides facing each other; A second light source provided on the substrate with a predetermined distance from the first light source and irradiating laser light having a wavelength different from that irradiated from the first light source to opposite sides facing each other; A reflection member disposed on the substrate between the first light source and the second light source and reflecting the laser light emitted from one side of each of the first and second light sources to face in one direction; First and second monitor photodetectors for receiving laser light emitted from the other side of each of the first and second light sources to monitor light output of the first and second light sources; A package frame surrounding the substrate, the first and second light sources, the reflective member, and the photodetectors for the first and second monitors; And a lead frame formed through the package frame and wire-bonded to the first and second light sources and the photodetectors for the first and second monitors. The method of claim 1, wherein the reflective member, A base integrally formed with the substrate, the base having first and second surfaces having predetermined slopes; And first and second reflectors formed on each of the first and second surfaces to reflect light incident from the first and second light sources, respectively. The method of claim 1, The second light source is irradiated with a laser light of a relatively long wavelength compared to the wavelength of the laser light irradiated from the first light source, Each of the first and second light sources is disposed such that the length on the optical axis between the emission surface of the second light source and the reflecting member is longer than the length on the optical axis between the emission surface of the first light source and the reflecting member. Light output module characterized in that. The method of claim 1, wherein the substrate, And a pair of guide grooves formed at a position where each of the first and second light sources are attached to guide the attachment position of each of the first and second light sources. The method according to any one of claims 1 to 4, An exit hole radiated from the first and second light sources and emitted by the reflecting member, and having the first and second light sources, the reflecting member, and the first and second monitor photodetectors. And a cap installed on the package frame to wrap. First and second light sources disposed on the substrate with a predetermined distance from each other, and irradiating laser light having first and second wavelengths on both sides thereof, and between the first light source and the second light source. A reflecting member disposed on a substrate and reflecting the laser light radiated from one side of each of the first and second light sources to be directed in one direction, and the laser light radiated from the other side of each of the first and second light sources An optical output module including first and second monitor photodetectors configured to receive the light and monitor the optical output of the first and second light sources; An objective lens disposed on an optical path between the optical output module and the optical recording medium to focus incident first and second laser light onto the optical recording medium; Optical path converting means disposed on an optical path between the optical output module and the objective lens to convert a traveling path of incident light; A grating disposed on an optical path between the optical output module and the optical path converting means to diffract and transmit incident light; Light detecting means for receiving the light incident through the optical path changing means after being irradiated from the first and second light sources and reflected from the optical recording medium; And a hologram element disposed on an optical path between the optical path changing means and the light detecting means and diffracting and transmitting incident light. The method of claim 6, wherein the reflective member, A base integrally formed with the substrate, the base having first and second surfaces having predetermined slopes; And first and second reflectors formed on each of the first and second surfaces to reflect light incident from the first and second light sources, respectively. The method of claim 6, The second light source is irradiated with a laser light of a relatively long wavelength compared to the wavelength of the laser light irradiated from the first light source, Each of the first and second light sources is disposed such that the length on the optical axis between the emission surface of the second light source and the reflecting member is longer than the length on the optical axis between the emission surface of the first light source and the reflecting member. Compatible optical pickup device characterized in that. The method of claim 6, wherein the substrate, And a pair of guide grooves formed at a position where each of the first and second light sources are attached to guide the attachment position of each of the first and second light sources. The method of claim 6, Each of the grating and the hologram elements is arranged such that the diffraction directions of the light diffracted by the grating and the hologram elements are perpendicular to each other. The light detecting means, First and second photodetectors arranged to be spaced apart from each other at predetermined intervals, and respectively receiving light diffracted to zero order light in the grating and diffracted to +1 order and -1 order light again in the hologram element; The first and second photodetectors are disposed to be spaced apart from each other by a predetermined interval, and are respectively diffracted by +1 order / -1 order light in the grating and again diffracted by +1 order and -1 order light in the hologram element. Third and fourth photodetectors respectively receiving light; Compatible optical pickup device comprising a. The method of claim 10, The first photodetector includes four dividers A, B, C, and D, the dividers A, B, and the divider C, which are arranged in a 2-by-2 arrangement to detect the track error signal TES by a phase difference method. D) one partition plate G1 disposed between, The second photodetector includes three divided plates G2, H, and G3 divided into three sections to detect the focus error signal FES by differential from the signal detected by the first photodetector. Fluorescent pickup device.

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