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公开(公告)号：JPH10312577A
公开(公告)日：1998-11-24
申请号：JP13600198
申请日：1998-04-30
Applicant: MOTOROLA INC
Inventor： JIANG WENBIN , LEBBY MICHAEL S
Abstract: PROBLEM TO BE SOLVED: To obtain an optical submodule which can read both a CD and a DVD by arranging a first light emitting unit on the second surface of a substrate such that a first light is reflected on a third surface and operating a second light emitting unit on the first surface of the substrate such that a second light is emitted substantially in parallel with the first light. SOLUTION: A substrate 103 has first surface (head part surface) 105, a second surface (bottom part surface) 107 and a third surface (side part surface) 109. The second surface 107 is jointed to the first surface 105 through the third surface 109 and arranged in parallel with the first surface while the third surface is arranged at an angle against the second surface. A first light emitting unit 117 emits the light 123 on the second surface 107 of the substrate 103 toward the third surface 109 and that light is reflected (127) on the third surface 109. A second light emitting unit 119 is arranged on the first surface 105 of the substrate 103 and operates to emit a second light 125 substantially in parallel with the first reflected light 127.
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公开(公告)号：JP2000081602A
公开(公告)日：2000-03-21
申请号：JP21213299
申请日：1999-07-27
Applicant: MOTOROLA INC
Inventor： CHEN DIANA , LEBBY MICHAEL S , JACHIMOWICZ KAREN E
IPC: H04N5/74 , G02F1/13 , G02F1/133 , G02F1/1333 , G02F1/1334 , H04N9/31
Abstract: PROBLEM TO BE SOLVED: To provide a non-speckle laser projection type display which generates images free from speckles with high resolution. SOLUTION: The non-speckle laser projection type display includes a liquid crystal material 16. A projection type display screen includes the liquid crystal material 16 which attains an extremely scattered state when there is no impression of driving voltage 22. When a high-frequency low-voltage signal is impressed to the liquid crystal projection type display screen, liquid crystal molecules 15 vibrate slightly at a frequency higher than 60 Hz, by which the speckle patterns are rapidly changed and to negate the speckles and to make the speckle invisible. In addition, the non-speckle laser display system including a laser image source and the liquid crystal projection type display screen is provided as well.
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3.发明专利
公开(公告)号：JPH10256656A
公开(公告)日：1998-09-25
申请号：JP4620598
申请日：1998-02-10
Applicant: MOTOROLA INC
Inventor： RAMDANI JAMAL , LEBBY MICHAEL S , JIANG WENBIN
Abstract: PROBLEM TO BE SOLVED: To obtain a vertical cavity surface emitting laser attaining a high reflectivity, by arranging a second contact layer on a second cladding region, and arranging a dielectric mirror stack on the second contact layer. SOLUTION: An N-doped gallium phosphide layer of DBR mirror structure 10, i.e., an N-contact layer 18 is fusion welded on the uppermost surface of a second cladding region 36 of an active VCSEL element. A VCSEL 40 is defined in a second contact layer, a first cladding layer 30 and an active region. Conductive material is arranged on the second contact layer 28, and a P-electric contact 48 is formed. Conductive material is arranged on the contact layer 18, and an N-electric contact is formed. After that, a P-metal contact 48 is deposited on the contact layer 28 in such a manner that a laser emitting aperture 52 is left in an open state. Concerning the first contact layer 18, an N-metal layer 50 is deposited in the same manner as the second cladding layer 36 surface. Finally, a second distributed Bragg-reflector 42, i.e., dielectric mirror structure is deposited on the second contact layer 28.
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公开(公告)号：JP2000089687A
公开(公告)日：2000-03-31
申请号：JP20464499
申请日：1999-07-19
Applicant: MOTOROLA INC
Inventor： DIANA C CHENG , LEBBY MICHAEL S , KAREN E JIYACHIMOUITSUKU
Abstract: PROBLEM TO BE SOLVED: To eliminate the coherence of radiation light and to obtain non-speckle high-resolution images by arranging a phase modulation layer between a light source and a display screen and randomly modulating the phase of the light passing the same. SOLUTION: An image source includes a silicon wafer 12 and a cantilever portion 14 is formed as part thereof. Deflection arises in this cantilever portion 14 and the scan operation of laser diodes 18 to 20 is executed in response with the change in the voltage impressed from a voltage source 41. The phase modulation layer 28 is arranged on the uppermost surface 26 of the cantilever portion 14. The phase modulation layer 28 includes plural conductive layers and an interconnection 41 electrically connected to an external power source for sending a signal thereto. Irregular signals are sent by randomly changing the amplitude or frequency of the input signal during the operation. The phase of the phase modulation material of the phase modulation layer 28 is randomly modulated, by which the coherence of the light rays 32 to 34 passing the same is annihilated.
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公开(公告)号：JPH10256655A
公开(公告)日：1998-09-25
申请号：JP5880498
申请日：1998-02-24
Applicant: MOTOROLA INC
Inventor： RAMDANI JAMAL , LEBBY MICHAEL S , JIANG WENBIN
Abstract: PROBLEM TO BE SOLVED: To provide a vertical cavity surface emission laser improved to emit a long wavelength light. SOLUTION: The VCSEL 10 for emitting a long wavelength light comprises a first mirror stack 14 including a GaAs/AlGaAs based mirror part having a grating matched with that of a GaTlP region 20 including an active region 23 sandwiched by a first cladding region 24 contiguous to the first mirror stack 14 and a second cladding region 25, an active structure 23 having a quantum well, and a second mirror stack 26 having a grating matched with that of the second cladding region 25 and including a GaAs/AlGaAs based mirror pair.
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Patent Agency Ranking
公开(公告)号：JPH10247626A
公开(公告)日：1998-09-14
申请号：JP1193298
申请日：1998-01-05
Applicant: MOTOROLA INC
Inventor： RAMDANI JAMAL , LEBBY MICHAEL S , HOLM PAIGE M
IPC: C30B29/38 , H01L21/20 , H01L21/203 , H01L21/205 , H01L33/00
Abstract: PROBLEM TO BE SOLVED: To provide the method of growing gallium nitride on a spinel substrate, where a plurality of buffer layers are utilized, at low cost, and to provide a method in which the rate of lattice mismatch, pertaining to a spinel substrate, and dislocation density can be reduced. SOLUTION: A supporting substrate 12 is prepared, a plurality of buffer layers 14 are positioned on one surface of the supporting substrate 12, and gallium nitride is grown on the spinel substrate. The plural buffer layers contain a first buffer layer 15 consisting of aluminum oxynitride(ALON) having a low mismatch rate against the spinel substrate. A second buffer layer 16 is positioned on the first buffer layer, and the layer 16 contains a plurality of layers 17 consisting of low dislocation density crystal ALON. A third buffer layer 18 consisting of aluminum nitride is positioned on the second buffer layer 16, and a fourth buffer layer 20 consisting of gallium nitride is positioned on the third buffer layer 18. A photonic device structure 22 is formed on the fourth buffer layer 20.
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公开(公告)号：JPH10215025A
公开(公告)日：1998-08-11
申请号：JP36843297
申请日：1997-12-25
Applicant: MOTOROLA INC
Inventor： RAMDANI JAMAL , LEBBY MICHAEL S , PHILIP KERRY
Abstract: PROBLEM TO BE SOLVED: To provide a visible-light-emitting vertical cavity surface emitting laser which comprises an easily doped contact layer and whose structural maintainability can be obtained. SOLUTION: A first distributed Bragg reflector stack 44 is arranged on the surface 43 of a semiconductor substrate 42. The stack 44 contains a plurality of alternating layers 45 made of substances whose refractive index is alternating, and the stack comprises a first dopant type. A first cladding region 48 is arranged on the stack 44, and an active region 54 is arranged on the first cladding region 48. The active region 54 comprises at least two barrier layers 56, 58 and a quantum well layer 60, a second cladding region 62 is arranged on the active region 54, and a second distributed Bragg reflector stack 68 is arranged on the cladding region 62. A contact region 62 is formed on the second distributed Bragg reflector stack 68. The contact region 72 contains a doped gallium phosphide substance.
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8.发明专利
公开(公告)号：JP2004177985A
公开(公告)日：2004-06-24
申请号：JP2004084833
申请日：2004-03-23
Applicant: Motorola Inc , モトローラ・インコーポレイテッドMotorola Incorporated
Inventor： KUO SHUN-MEEN , CHUN CHRISTOPHER K Y , LEBBY MICHAEL S
CPC classification number: G02B6/4214 , G02B6/4238 , G02B6/4292
Abstract: PROBLEM TO BE SOLVED: To provide a photoelectronic interface device having a reflecting surface, which is hugh in cost performance, is simple in structure and can be manufactured even in a mass-production site in a device and method for connecting or coupling a photo device and an optical fiber mutually.
SOLUTION: The photo device 113 which has an operating part 114 and contacts 110 each of which is electrically coupled with one of a plurality of electric tracings is arranged on an interconnection substrate. A molded optical part 109 which entraps the photo device is formed and, moreover, a reflecting surface 112 having a plurality of curved surfaces, which draws light between an optical connector 101 and the photo device 113 and matching devices 207 and optical input/output faces 134 are formed in the molded optical part 109. The optical connector 101 includes a plurality of optical fibers 102, 204 and matching devices 206 and the plurality of optical fibers are adjusted to the reflecting surface by engagement of both matching devices 206 and 207.
COPYRIGHT: (C)2004,JPO-
公开(公告)号：JPH1140899A
公开(公告)日：1999-02-12
申请号：JP7501398
申请日：1998-03-10
Applicant: MOTOROLA INC
Inventor： HUANG RONG-TING , JIANG WENBIN , LEBBY MICHAEL S
Abstract: PROBLEM TO BE SOLVED: To obtain a semiconductor laser package, which is capable of monitoring the emission of a VCSEL and reduced in cost by a method, wherein a power-monitoring system positioned so as to receive the emission light reflected from an optical element is provided. SOLUTION: A power-monitoring system is equipped with a power-monitoring device such as a photodetector 28, which is mounted on a separation metal plate 10 above a VCSEL 16. The photodetector 28 is positioned on the metal plate 10, so as to receive a portion of the emission light reflected from an optical element 22 such as a beam splitter which is positioned in the optical path of the emission light or the VCSEL 16. The optical element 22 allows most of the emitted light to pass therethrough and reflects a few % returned light in the direction of the photodetector 28. Furthermore, the emission of the VCSEL 16 is monitored. The VCSEL 16 is equipped with the photodetector 28 which receives a portion of the emission reflected from the optical element 22 to the monitor.
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10.发明专利
公开(公告)号：JPH10215026A
公开(公告)日：1998-08-11
申请号：JP36843397
申请日：1997-12-25
Applicant: MOTOROLA INC
Inventor： RAMDANI JAMAL , LEBBY MICHAEL S , JIANG WENBIN
Abstract: PROBLEM TO BE SOLVED: To provide a vertical cavity surface emitting laser which enhances a lattice matching property, by using a metallic substrate and which can be emitted at an ultraviolet/blue/green visible spectrum. SOLUTION: In an ultraviolet/blue/green vertical cavity surface emitting laser(VCSEL) 10, a VCSEL structure is formed on a metallic single-crystal substrate 12 so as to store data at high density. The metallic single-crystal substrate 12 is used as a rear reflecting mirror, and it acts together with an aluminum gallium nitride/gallium nitride distributed Bragg reflector 20 so as to increase the total reflectance of the VCSEL laser 10. The metallic substrate 12 is made of a substance such as nickel, aluminum or the like. As a result, it is possible to enhance a lattice matching property with a contained III nitride material.
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