JPS57165811A - Light source device with condenser lens - Google Patents

Light source device with condenser lens

Info

Publication number
JPS57165811A
JPS57165811A JP5206881A JP5206881A JPS57165811A JP S57165811 A JPS57165811 A JP S57165811A JP 5206881 A JP5206881 A JP 5206881A JP 5206881 A JP5206881 A JP 5206881A JP S57165811 A JPS57165811 A JP S57165811A
Authority
JP
Japan
Prior art keywords
condenser lens
turns
lamp
light source
source device
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.)
Pending
Application number
JP5206881A
Other languages
Japanese (ja)
Inventor
Yoshiyuki Ishidate
Ikuo Mori
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.)
TOUKIYOU KOUGAKU KIKAI KK
Tokyo Optical Co Ltd
Fujifilm Business Innovation Corp
Original Assignee
TOUKIYOU KOUGAKU KIKAI KK
Fuji Xerox Co Ltd
Tokyo Optical 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 TOUKIYOU KOUGAKU KIKAI KK, Fuji Xerox Co Ltd, Tokyo Optical Co Ltd filed Critical TOUKIYOU KOUGAKU KIKAI KK
Priority to JP5206881A priority Critical patent/JPS57165811A/en
Publication of JPS57165811A publication Critical patent/JPS57165811A/en
Pending legal-status Critical Current

Links

Classifications

    • G—PHYSICS
    • G03—PHOTOGRAPHY; CINEMATOGRAPHY; ANALOGOUS TECHNIQUES USING WAVES OTHER THAN OPTICAL WAVES; ELECTROGRAPHY; HOLOGRAPHY
    • G03B—APPARATUS OR ARRANGEMENTS FOR TAKING PHOTOGRAPHS OR FOR PROJECTING OR VIEWING THEM; APPARATUS OR ARRANGEMENTS EMPLOYING ANALOGOUS TECHNIQUES USING WAVES OTHER THAN OPTICAL WAVES; ACCESSORIES THEREFOR
    • G03B21/00—Projectors or projection-type viewers; Accessories therefor
    • G03B21/14—Details
    • G03B21/16—Cooling; Preventing overheating

Landscapes

  • Physics & Mathematics (AREA)
  • General Physics & Mathematics (AREA)
  • Microscoopes, Condenser (AREA)

Abstract

PURPOSE:To prevent an increase in the temperature gradient of a condenser lens by blowing a hot blast right after a lamp turns on, and blowing a external air blast right after it turns off. CONSTITUTION:When a lamp 6 turns on, heated hot air near the socket of the lamp is blown to a condenser lens 9 by the 1st fan 4 in an outer housing 2 through an air vent 10, and even after the lamp 6 turns off, the fan 4 rotates awhile to blow after-heat air near socket to the condenser lens, so that the lens has no steep temperature gradient. Thus, the condenser lens is prevented from breaking down.
JP5206881A 1981-04-07 1981-04-07 Light source device with condenser lens Pending JPS57165811A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP5206881A JPS57165811A (en) 1981-04-07 1981-04-07 Light source device with condenser lens

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP5206881A JPS57165811A (en) 1981-04-07 1981-04-07 Light source device with condenser lens

Publications (1)

Publication Number Publication Date
JPS57165811A true JPS57165811A (en) 1982-10-13

Family

ID=12904491

Family Applications (1)

Application Number Title Priority Date Filing Date
JP5206881A Pending JPS57165811A (en) 1981-04-07 1981-04-07 Light source device with condenser lens

Country Status (1)

Country Link
JP (1) JPS57165811A (en)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO2000066944A1 (en) 1999-04-28 2000-11-09 Hamamatsu Photonics K.K. Portable light source

Citations (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS5216735U (en) * 1975-07-25 1977-02-05

Patent Citations (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS5216735U (en) * 1975-07-25 1977-02-05

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO2000066944A1 (en) 1999-04-28 2000-11-09 Hamamatsu Photonics K.K. Portable light source
US6637913B2 (en) 1999-04-28 2003-10-28 Hamamatsu Photonics K.K. Portable light source apparatus

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