JPS5722208A - Terminal part of image fiber - Google Patents

Terminal part of image fiber

Info

Publication number
JPS5722208A
JPS5722208A JP9784280A JP9784280A JPS5722208A JP S5722208 A JPS5722208 A JP S5722208A JP 9784280 A JP9784280 A JP 9784280A JP 9784280 A JP9784280 A JP 9784280A JP S5722208 A JPS5722208 A JP S5722208A
Authority
JP
Japan
Prior art keywords
image fiber
face
image
optical axis
axis direction
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.)
Granted
Application number
JP9784280A
Other languages
Japanese (ja)
Other versions
JPS636850B2 (en
Inventor
Noritaka Kurauchi
Yasuji Hattori
Kunio Fujiwara
Kozo Yoshimura
Hiroo Matsuda
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.)
Sumitomo Electric Industries Ltd
Original Assignee
Sumitomo Electric Industries 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 Sumitomo Electric Industries Ltd filed Critical Sumitomo Electric Industries Ltd
Priority to JP9784280A priority Critical patent/JPS5722208A/en
Publication of JPS5722208A publication Critical patent/JPS5722208A/en
Publication of JPS636850B2 publication Critical patent/JPS636850B2/ja
Granted legal-status Critical Current

Links

Classifications

    • G—PHYSICS
    • G02—OPTICS
    • G02B—OPTICAL ELEMENTS, SYSTEMS OR APPARATUS
    • G02B6/00—Light guides; Structural details of arrangements comprising light guides and other optical elements, e.g. couplings
    • G02B6/24—Coupling light guides
    • G02B6/42—Coupling light guides with opto-electronic elements
    • G02B6/4201—Packages, e.g. shape, construction, internal or external details
    • G02B6/4202—Packages, e.g. shape, construction, internal or external details for coupling an active element with fibres without intermediate optical elements, e.g. fibres with plane ends, fibres with shaped ends, bundles
    • G02B6/4203—Optical features

Abstract

PURPOSE:To prevent the brightness of an image from lowering in circumferential end parts by keeping the difference in heights in an optical axis direction of concave and convex at the end face of an image fiber at <=2tF (t: the spacing between the picture elements of the image fiber, F: F number of an imaging lens). CONSTITUTION:Depth of focus (d) is given by + or -tF when the distance between the picture elements of an image fiber is expressed as t, and the F number of an imaging lens as F as described above. If the end face of the image fiber is of hyperbola, the maximum improvement in coupling efficiency is anticipated, but in general in the stepped curved surface where each split region is constituted of part of the curves convex on the object side, the rays arriving at the end face of the image fiber by passing the center of the lens are more refracted to the optical axis direction as compared to the case of an ordinary end face of a flat surface shape, and therefore the improvement in the coupling efficiency is achieved.
JP9784280A 1980-07-17 1980-07-17 Terminal part of image fiber Granted JPS5722208A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP9784280A JPS5722208A (en) 1980-07-17 1980-07-17 Terminal part of image fiber

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP9784280A JPS5722208A (en) 1980-07-17 1980-07-17 Terminal part of image fiber

Publications (2)

Publication Number Publication Date
JPS5722208A true JPS5722208A (en) 1982-02-05
JPS636850B2 JPS636850B2 (en) 1988-02-12

Family

ID=14202964

Family Applications (1)

Application Number Title Priority Date Filing Date
JP9784280A Granted JPS5722208A (en) 1980-07-17 1980-07-17 Terminal part of image fiber

Country Status (1)

Country Link
JP (1) JPS5722208A (en)

Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4803021A (en) * 1986-02-14 1989-02-07 Amoco Corporation Ultraviolet laser treating of molded surfaces
US4863536A (en) * 1985-05-22 1989-09-05 Raychem Gmbh Method of encapsulating an electrical components
JPH0221619U (en) * 1988-07-27 1990-02-14

Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4863536A (en) * 1985-05-22 1989-09-05 Raychem Gmbh Method of encapsulating an electrical components
US4803021A (en) * 1986-02-14 1989-02-07 Amoco Corporation Ultraviolet laser treating of molded surfaces
JPH0221619U (en) * 1988-07-27 1990-02-14

Also Published As

Publication number Publication date
JPS636850B2 (en) 1988-02-12

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