JPS5941301U - plate lens - Google Patents

plate lens

Info

Publication number
JPS5941301U
JPS5941301U JP13486082U JP13486082U JPS5941301U JP S5941301 U JPS5941301 U JP S5941301U JP 13486082 U JP13486082 U JP 13486082U JP 13486082 U JP13486082 U JP 13486082U JP S5941301 U JPS5941301 U JP S5941301U
Authority
JP
Japan
Prior art keywords
lens
plate
plate lens
shaped
shaped lens
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
JP13486082U
Other languages
Japanese (ja)
Inventor
菅沢　勇
江原　章一
英徳 伊藤
上代　康弘
佐伯　講介
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.)
Ricoh Co Ltd
Original Assignee
Ricoh 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 Ricoh Co Ltd filed Critical Ricoh Co Ltd
Priority to JP13486082U priority Critical patent/JPS5941301U/en
Publication of JPS5941301U publication Critical patent/JPS5941301U/en
Pending legal-status Critical Current

Links

Landscapes

  • Moulds For Moulding Plastics Or The Like (AREA)

Abstract

(57)【要約】本公報は電子出願前の出願データであるた
め要約のデータは記録されません。(57) [Summary] This bulletin contains application data before electronic filing, so abstract data is not recorded.

Description

【図面の簡単な説明】[Brief explanation of drawings]

第１図は従来の板状レンズを示す斜視図、第２図は同板
状レンズの成形状態を示す断面図、第３図はこの考案の
一実施例に係る板状レンズの成形状態を示す第２図と同
様な断面図である。 ８ｄ・・・１／３の位置（板厚の略中央部）、９・・・
板状レンズ本体、１０・・・レンズ部、１０ａ・・・表
のレンズ球面、１０ｂ・・・裏のレンズ球面、１１・・
・固定側金型、１２・・・可動側金型、１３・・・パー
ティングライン。FIG. 1 is a perspective view showing a conventional plate lens, FIG. 2 is a sectional view showing the molded state of the same plate lens, and FIG. 3 shows the molded state of a plate lens according to an embodiment of the invention. FIG. 2 is a cross-sectional view similar to FIG. 2; 8d... 1/3 position (approximately center of plate thickness), 9...
Plate lens body, 10... Lens portion, 10a... Front lens spherical surface, 10b... Back lens spherical surface, 11...
- Fixed side mold, 12... Movable side mold, 13... Parting line.

Claims (1)

【実用新案登録請求の範囲】[Scope of utility model registration request] 板状レンズ本体の表裏に複数のレンズ球面が所定ピッチ
で設けられ、該表裏の対応するレンズ球面が一体となっ
て複数のレンズ部が形成されて成り、−苅の金型の一方
で前記表のレンズ球面が、他方で前記裏のレンズ球面が
形成される板状レンズであって、前記板状レンズ本体の
板厚の略中央部に前記金型のパーティングラインを位置
させるように設定した前記金型で成形されたことを特徴
とする板状レンズ。A plurality of lens spherical surfaces are provided at a predetermined pitch on the front and back sides of a plate-shaped lens body, and the corresponding lens spherical surfaces on the front and back are integrated to form a plurality of lens parts, The lens spherical surface is a plate-shaped lens on which the back lens spherical surface is formed on the other hand, and the parting line of the mold is set to be located approximately at the center of the thickness of the plate-shaped lens body. A plate-shaped lens, characterized in that it is molded using the mold described above.
JP13486082U 1982-09-07 1982-09-07 plate lens Pending JPS5941301U (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP13486082U JPS5941301U (en) 1982-09-07 1982-09-07 plate lens

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP13486082U JPS5941301U (en) 1982-09-07 1982-09-07 plate lens

Publications (1)

Publication Number Publication Date
JPS5941301U true JPS5941301U (en) 1984-03-16

Family

ID=30303748

Family Applications (1)

Application Number Title Priority Date Filing Date
JP13486082U Pending JPS5941301U (en) 1982-09-07 1982-09-07 plate lens

Country Status (1)

Country Link
JP (1) JPS5941301U (en)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS648314A (en) * 1987-06-30 1989-01-12 Aisin Seiki Cooling and lubricating device for internal combustion engine

Citations (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS498893A (en) * 1972-05-23 1974-01-25
JPS5749526A (en) * 1980-09-08 1982-03-23 Olympus Optical Co Ltd Molding and correction of plastic lens

Patent Citations (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS498893A (en) * 1972-05-23 1974-01-25
JPS5749526A (en) * 1980-09-08 1982-03-23 Olympus Optical Co Ltd Molding and correction of plastic lens

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS648314A (en) * 1987-06-30 1989-01-12 Aisin Seiki Cooling and lubricating device for internal combustion engine

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