WO2002014741A1 - Short-arch discharge lamp with reflection mirror - Google Patents

Short-arch discharge lamp with reflection mirror Download PDF

Info

Publication number
WO2002014741A1
WO2002014741A1 PCT/JP2001/007094 JP0107094W WO0214741A1 WO 2002014741 A1 WO2002014741 A1 WO 2002014741A1 JP 0107094 W JP0107094 W JP 0107094W WO 0214741 A1 WO0214741 A1 WO 0214741A1
Authority
WO
WIPO (PCT)
Prior art keywords
discharge lamp
reflector
base
hole
short
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Ceased
Application number
PCT/JP2001/007094
Other languages
English (en)
French (fr)
Japanese (ja)
Inventor
Makoto Ookahara
Kyouichi Maseki
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Iwasaki Electric Co Ltd
Original Assignee
Iwasaki Electric Co Ltd
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by Iwasaki Electric Co Ltd filed Critical Iwasaki Electric Co Ltd
Priority to DE60131419T priority Critical patent/DE60131419T2/de
Priority to EP01956951A priority patent/EP1312856B1/en
Publication of WO2002014741A1 publication Critical patent/WO2002014741A1/ja
Anticipated expiration legal-status Critical
Priority to US11/312,432 priority patent/US7644596B2/en
Ceased legal-status Critical Current

Links

Classifications

    • 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
    • F21V7/00—Reflectors for light sources
    • 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
    • F21V19/00—Fastening of light sources or lamp holders
    • 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
    • F21V19/00—Fastening of light sources or lamp holders
    • F21V19/0005—Fastening of light sources or lamp holders of sources having contact pins, wires or blades, e.g. pinch sealed lamp
    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01J—ELECTRIC DISCHARGE TUBES OR DISCHARGE LAMPS
    • H01J61/00—Gas-discharge or vapour-discharge lamps
    • H01J61/84—Lamps with discharge constricted by high pressure
    • H01J61/88—Lamps with discharge constricted by high pressure with discharge additionally constricted by envelope

Definitions

  • the present invention relates to a light source device used as a backlight of a liquid crystal projection device, and more particularly to an improvement of a glass reflector.
  • the reflector 31 has a hollow neck portion 32 at the bottom when a glass reflector is machined as shown in FIGS. 3 to 5, but the bulb insertion hole 33 is formed.
  • the surface of the bulb insertion hole which is the end face of the hollow neck portion, is damaged by the grindstone, so that there is a problem that cracks enter and break due to heat during lighting of the bulb.
  • the reflector 31 and the bulb 41 are aligned with the central axis of the reflector. Arrange the unit so that it is aligned with the optical axis of the bulb, and fill and fix the inside of the hollow neck 32 with an adhesive 51.
  • reference numeral 52 denotes a ring-shaped glass member for preventing the adhesive from flowing out.
  • the power supply lug terminal is formed by using the screw 43b formed at the end of the cylindrical part 43a of the base.
  • the present invention has been made in view of the above, and can satisfy the requirements for a miniaturized device and an efficient optical characteristic required as a light source device for a mopile liquid crystal project. In addition, it prevents cracks from the end face of the neck of the reflector due to heat generated from the discharge lamp due to miniaturization, and adjusts the position of the reflector and the lamp even if there is deviation from the center axis of the electrode axis during lamp manufacture It is an object of the present invention to provide a short arc discharge lamp with a reflector, which has a long life and excellent optical characteristics. Disclosure of the invention
  • a short arc discharge lamp with a reflecting mirror comprises: a glass reflecting mirror formed by embossing having an inner surface having a reflecting surface composed of an even function; and a pair of electrodes inside.
  • the discharge lamp is disposed so as to coincide with the base, and the base is fixed to a through hole of a hollow neck formed at the center of the bottom of the reflector, and a base on an inner surface of the through hole of the hollow neck.
  • the peripheral portion is processed into a cylindrical shape, a narrowest portion is formed from the cylindrical portion toward the reflecting surface, and an embossed portion is formed from the narrowest portion toward the reflecting surface, and the embossed portion reflects while spreading. It is characterized in that it is formed so as to be in contact with the surface.
  • FIG. 1 is a sectional view of an embodiment showing a short arc discharge lamp with a reflecting mirror according to the present invention.
  • FIG. 2 is an enlarged sectional view of a main part of FIG.
  • FIG. 3 is an explanatory view showing a state after embossing of a conventional reflector.
  • FIG. 4 is an explanatory view showing a post-processing state of the reflector of FIG.
  • FIG. 5 is a sectional view of a main part showing a conventional unit of a reflector and a bulb.
  • FIG. 1 and 2 are a cross-sectional view and an enlarged cross-sectional view of a main part showing a short arc discharge lamp with a reflector according to the present invention.
  • reference numeral 1 denotes a hard glass-made reflecting mirror (expansion coefficient: 38 xl O—7 cm / ° C.) having a paraboloidal reflecting surface 1 a formed on the inner surface, and one of the reflecting mirrors has an opening. 2, and a neck 4 having a through hole 3 is formed at the center of the other bottom side.
  • reference numeral 11 denotes a short arc discharge lamp made of a quartz arc tube, in which a pair of electrodes 12a and 12b are sealed along the optical axis, and a luminescent substance such as mercury is enclosed together with a starting gas. Have been.
  • arc tube sealing portions 14a and 14b in which molybdenum foils 13a and 13b are embedded are formed.
  • a threaded base 15 is fixed to one of the sealing portions 14b, and the base 15 includes a cylindrical portion 15a and a threaded portion 15b at an end thereof.
  • the reflecting mirror 1 having a focal length of 6 mm and the discharge lamp 11 are arranged so that the central axis of the reflecting mirror coincides with the optical axis of the lamp, and are formed on the neck 4 of the reflecting mirror 1.
  • Discharge lamp 1 in through hole 3 Screw cap fixed to arc tube sealing part 1 4 b of 1 15 is inserted and fixed using adhesive 21.
  • the inner surface of the neck portion 4 of the reflector 1 according to the present invention has a portion extending from the reflecting surface la to the through hole 3 of the neck portion 4 (the entrance portion of the insertion hole) slightly expanding toward the bottom.
  • the embossed portion 4a is formed. This is because the stamped surface press-molded in the mold when manufacturing the glass reflector is left as a dough and does not require shaving, so it has a smooth surface without any scratches.
  • the narrowest portion 4b of the through hole 3 is formed in a portion continuous with the embossed portion 4a, and is bonded to the embossed portion 4a when the adhesive 21 after assembly is injected. The medicine is prevented from flowing out.
  • the portion extending from the narrowest portion 4b of the through hole 3 to the outer end thereof is formed in a cylindrical shape 4c. This is because the cylindrical portion 15a of the threaded base 15 fixed to the arc tube sealing portion 14b to be inserted into the through hole 3 of the neck portion 4 can be inserted sufficiently, and occurs during lamp production. It has a cylindrical shape with a large diameter so that the axial bending of a pair of electrodes that may occur can be adjusted sufficiently to match the central axis of the reflector.
  • the shape of the cylindrical portion of the base inserted into the through hole 3 is made to be difficult to rotate after being fixed, the same effect can be obtained even when the cross-sectional shape is hexagonal.
  • the hottest part of the reflector is at the point H in Fig. 1, which is about 480 ° C in the conventional example, and the glass distortion temperature is about 520 ° C.
  • the temperature of ° C repeated lighting causes cracks from the periphery of the machined part.
  • the reflecting mirror according to the present invention has no shaved portion in the embossed portion of the neck portion, and the portion does not become a high-temperature portion. At temperature, no cracks occur during the lamp life.
  • the main component is silica / alumina. It is fixed using an adhesive.
  • the adhesive 21 is injected from the cutout provided at the bottom of the neck 4 of the reflector, which is the adhesive inlet, but the adhesive is prevented from flowing out at the narrowest part 4b. Therefore, the adhesive does not flow into the embossed portion 4a and the reflecting surface 1a, and the occurrence of cracks due to stress caused by a difference in thermal expansion between the glass reflector and the adhesive can be prevented.
  • the structure and shape of the neck at the bottom of the reflector are improved, and the surface close to the light emitting portion of the lamp as a heat source is not shaved.
  • the end face of the through hole of the lamp in contact with the reflecting surface is left as an embossed surface
  • the surrounding part of the through hole surrounding the threaded base of the lamp is a cylindrical part having the same shape as the cylindrical part of the base.
  • the adhesive does not flow into the reflective surface during work, and the high temperature is maintained during the lamp life. No cracks occur even when the temperature changes, and a short arc discharge lamp with a reflecting mirror having excellent optical efficiency can be obtained.

Landscapes

  • Engineering & Computer Science (AREA)
  • General Engineering & Computer Science (AREA)
  • Non-Portable Lighting Devices Or Systems Thereof (AREA)
  • Projection Apparatus (AREA)
  • Fastening Of Light Sources Or Lamp Holders (AREA)
PCT/JP2001/007094 2000-08-17 2001-08-17 Short-arch discharge lamp with reflection mirror Ceased WO2002014741A1 (en)

Priority Applications (3)

Application Number Priority Date Filing Date Title
DE60131419T DE60131419T2 (de) 2000-08-17 2001-08-17 Kurzbogen- entladungslampe mit reflektor
EP01956951A EP1312856B1 (en) 2000-08-17 2001-08-17 Short-arch discharge lamp with reflection mirror
US11/312,432 US7644596B2 (en) 2000-08-17 2005-12-21 Method of manufacturing a glass reflector

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
JP2000247253A JP2002062586A (ja) 2000-08-17 2000-08-17 反射鏡付きショートアーク放電ランプ
JP2000-247253 2000-08-17

Related Child Applications (2)

Application Number Title Priority Date Filing Date
US10344557 A-371-Of-International 2001-08-17
US11/312,432 Continuation-In-Part US7644596B2 (en) 2000-08-17 2005-12-21 Method of manufacturing a glass reflector

Publications (1)

Publication Number Publication Date
WO2002014741A1 true WO2002014741A1 (en) 2002-02-21

Family

ID=18737387

Family Applications (1)

Application Number Title Priority Date Filing Date
PCT/JP2001/007094 Ceased WO2002014741A1 (en) 2000-08-17 2001-08-17 Short-arch discharge lamp with reflection mirror

Country Status (5)

Country Link
US (2) US20030184200A1 (https=)
EP (1) EP1312856B1 (https=)
JP (1) JP2002062586A (https=)
DE (1) DE60131419T2 (https=)
WO (1) WO2002014741A1 (https=)

Families Citing this family (16)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP2002062586A (ja) 2000-08-17 2002-02-28 Iwasaki Electric Co Ltd 反射鏡付きショートアーク放電ランプ
TWI230269B (en) * 2002-08-30 2005-04-01 Seiko Epson Corp Illuminating device, projector, and method of assembling illuminating device
US7001027B2 (en) * 2003-03-25 2006-02-21 Seiko Epson Corporation Light source device and projector
CN101387382B (zh) * 2003-05-22 2010-12-15 精工爱普生株式会社 光源装置及其制造方法和投影机
JP3988790B2 (ja) * 2003-05-22 2007-10-10 セイコーエプソン株式会社 光源装置、光源装置の製造方法、及びプロジェクタ
JP3863126B2 (ja) * 2003-06-26 2006-12-27 旭テクノグラス株式会社 プロジェクター用ガラス製反射鏡およびその製造方法
JP4190366B2 (ja) * 2003-08-04 2008-12-03 Ａｇｃテクノグラス株式会社 プロジェクター用ガラス製反射鏡の製造方法
JP4193063B2 (ja) 2004-03-22 2008-12-10 セイコーエプソン株式会社 ランプ装置およびそれを備えたプロジェクタ
JP4492337B2 (ja) * 2004-12-14 2010-06-30 ウシオ電機株式会社 光源ユニット
JP4539579B2 (ja) * 2006-02-14 2010-09-08 株式会社島津製作所 ランプ装置の光軸調整方法
US8603115B2 (en) * 2006-07-31 2013-12-10 Board Of Supervisors Of Louisiana State University And Agricultural And Mechanical College Soft tissue fixation device
CN102134898B (zh) * 2010-12-13 2012-04-18 德州振华装饰玻璃有限公司 空心玻璃砖圆柱弧形砖制造工艺
US8938991B2 (en) * 2011-10-04 2015-01-27 Rubbermaid Incorporated Method of making a molded glass article
WO2014050376A1 (ja) * 2012-09-25 2014-04-03 コニカミノルタ株式会社 ガラス部品の製造方法
US9004727B2 (en) * 2013-01-15 2015-04-14 Snap-On Incorporated Interchangeable reflectors for light devices
US10969560B2 (en) 2017-05-04 2021-04-06 Lightpath Technologies, Inc. Integrated optical assembly and manufacturing the same

Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPH0366150U (https=) * 1989-10-30 1991-06-27
JPH03106615U (https=) * 1990-02-19 1991-11-05
JPH06203806A (ja) * 1992-10-30 1994-07-22 Philips Electron Nv 電球及び反射器のユニット
JPH11265655A (ja) * 1998-03-18 1999-09-28 Matsushita Electric Ind Co Ltd 高圧放電ランプの口金構造

Family Cites Families (14)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3700881A (en) * 1971-04-29 1972-10-24 Gen Electric Lamp and reflector assembly
US3891421A (en) * 1973-01-02 1975-06-24 Gte Sylvania Inc Method of making a controlled-diffusion stippled reflector by sag molding
JPS5347253B2 (https=) * 1974-10-16 1978-12-20
US3985535A (en) * 1975-06-19 1976-10-12 Smithkline Corporation Method of making glass ampul for jet injector
JPS59181411A (ja) 1982-11-30 1984-10-15 住友電気工業株式会社 高電圧ケ−ブル
JP2788011B2 (ja) 1989-08-03 1998-08-20 三菱電機株式会社 半導体集積回路装置
DE3930527C1 (https=) 1989-09-13 1990-11-08 Grammer Ag, 8450 Amberg, De
US5177396A (en) * 1990-12-19 1993-01-05 Gte Products Corporation Mirror with dichroic coating lamp housing
JP3106615B2 (ja) 1991-11-18 2000-11-06 松下電器産業株式会社 給湯機などにおける燃焼装置
DE4401270A1 (de) * 1994-01-18 1995-07-20 Patent Treuhand Ges Fuer Elektrische Gluehlampen Mbh Reflektorlampe
JP3216877B2 (ja) * 1997-11-18 2001-10-09 松下電子工業株式会社 高圧放電ランプ、この高圧放電ランプを光源とした照明光学装置、およびこの照明光学装置を用いた画像表示装置
JP2000123786A (ja) * 1998-10-13 2000-04-28 Matsushita Electronics Industry Corp 高圧水銀ランプ、この高圧水銀ランプを用いた照明光学装置、およびこの照明光学装置を用いた画像表示装置
CA2361528A1 (en) * 1999-12-02 2001-06-07 Matsushita Electric Industrial Co., Ltd. Discharge lamp and lamp device
JP2002062586A (ja) 2000-08-17 2002-02-28 Iwasaki Electric Co Ltd 反射鏡付きショートアーク放電ランプ

Patent Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPH0366150U (https=) * 1989-10-30 1991-06-27
JPH03106615U (https=) * 1990-02-19 1991-11-05
JPH06203806A (ja) * 1992-10-30 1994-07-22 Philips Electron Nv 電球及び反射器のユニット
JPH11265655A (ja) * 1998-03-18 1999-09-28 Matsushita Electric Ind Co Ltd 高圧放電ランプの口金構造

Non-Patent Citations (1)

* Cited by examiner, † Cited by third party
Title
See also references of EP1312856A4 *

Also Published As

Publication number Publication date
EP1312856A1 (en) 2003-05-21
EP1312856A4 (en) 2006-03-08
US20060158079A1 (en) 2006-07-20
DE60131419T2 (de) 2008-09-18
DE60131419D1 (de) 2007-12-27
US20030184200A1 (en) 2003-10-02
US7644596B2 (en) 2010-01-12
JP2002062586A (ja) 2002-02-28
EP1312856B1 (en) 2007-11-14

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