JPS55121402A - Reflecting mirror for lamp device - Google Patents

Reflecting mirror for lamp device

Info

Publication number
JPS55121402A
JPS55121402A JP3019479A JP3019479A JPS55121402A JP S55121402 A JPS55121402 A JP S55121402A JP 3019479 A JP3019479 A JP 3019479A JP 3019479 A JP3019479 A JP 3019479A JP S55121402 A JPS55121402 A JP S55121402A
Authority
JP
Japan
Prior art keywords
reflecting part
flange
annular flange
reflecting
mirror
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
JP3019479A
Other languages
Japanese (ja)
Inventor
Tadao Sano
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.)
Maxell Ltd
Original Assignee
Hitachi Maxell 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 Hitachi Maxell Ltd filed Critical Hitachi Maxell Ltd
Priority to JP3019479A priority Critical patent/JPS55121402A/en
Publication of JPS55121402A publication Critical patent/JPS55121402A/en
Pending legal-status Critical Current

Links

Landscapes

  • Optical Elements Other Than Lenses (AREA)

Abstract

PURPOSE: To block the shrinkage force in the reflecting part and assure the correct reflection surface by integrally forming an annular flange to the opening circumferential end edge of the synthetic-resin-made bowl-form reflecting mirror through injection molding.
CONSTITUTION: The inside reflecting part 9 of a bowl-form reflecting mirror 8 made of AS resin or the like is formed by the parabolas focusing at the electric bulb protruding from the rear end opening window 10, is mirror-surface worked by aluminum vapor deposition film and is integrally formed with a broad annular flange 13 extended in the direction orthognal to the reflecting part 9, at its front large-diameter opening circumferential end edge 12. The thicknesses K, L of this annular flange 13 and reflecting part 9 are set the same and a slightly thicker reinforcing ring part 14 is formed at the outermost edge of the flange 13. The ratio between the maximum opening diameter S of the reflecting part and the maximum outside diameter T of the flange 13 is so set as to become 1:1.2W1.4. Thereby, the molding shrinkage deformation after the injection molding may be inhibited and the correct reflection surface secured.
COPYRIGHT: (C)1980,JPO&Japio
JP3019479A 1979-03-14 1979-03-14 Reflecting mirror for lamp device Pending JPS55121402A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP3019479A JPS55121402A (en) 1979-03-14 1979-03-14 Reflecting mirror for lamp device

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP3019479A JPS55121402A (en) 1979-03-14 1979-03-14 Reflecting mirror for lamp device

Publications (1)

Publication Number Publication Date
JPS55121402A true JPS55121402A (en) 1980-09-18

Family

ID=12296936

Family Applications (1)

Application Number Title Priority Date Filing Date
JP3019479A Pending JPS55121402A (en) 1979-03-14 1979-03-14 Reflecting mirror for lamp device

Country Status (1)

Country Link
JP (1) JPS55121402A (en)

Citations (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS4818054U (en) * 1971-07-10 1973-03-01
JPS4828746A (en) * 1971-08-23 1973-04-16

Patent Citations (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS4818054U (en) * 1971-07-10 1973-03-01
JPS4828746A (en) * 1971-08-23 1973-04-16

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