JPS5538520A - Reflection-refraction type telephoto lens - Google Patents

Reflection-refraction type telephoto lens

Info

Publication number
JPS5538520A
JPS5538520A JP11116478A JP11116478A JPS5538520A JP S5538520 A JPS5538520 A JP S5538520A JP 11116478 A JP11116478 A JP 11116478A JP 11116478 A JP11116478 A JP 11116478A JP S5538520 A JPS5538520 A JP S5538520A
Authority
JP
Japan
Prior art keywords
lens
face
reflecting
refracts
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
JP11116478A
Other languages
Japanese (ja)
Inventor
Eiichi Takano
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.)
Tamron Co Ltd
Original Assignee
Tamron 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 Tamron Co Ltd filed Critical Tamron Co Ltd
Priority to JP11116478A priority Critical patent/JPS5538520A/en
Publication of JPS5538520A publication Critical patent/JPS5538520A/en
Pending legal-status Critical Current

Links

Abstract

PURPOSE: To obtain the micro-miniature reflection-refraction type telephoto lens by constituting the lens by a condenser type lens L1, concave back reflecting mirror M1, convex back mirror M2 and lens group L2 along the advancing direction of incident luminous flux and positioning M2 on the object side than L1.
CONSTITUTION: Incident light transmits and refracts through a condenser type lens L1, refracts on the surface r3 of a concave back reflecting mirror M1, reflects on its face r4, refracts on the face r5 of a convex back mirror M2, is reflected by its face r6 and transmits and refracts through a lens group L2. The reflecting faces r5 and r6 of the concave back reflecting mirror M1 and convex back mirror M2 in such constitution form a telephoto lens system and as a whole the lens group L2 of concave lenses multiplies the action of the telephoto lens. Since the optical path of the entire optical system is folded, miniaturization is made possible. The effective spacing of the reflecting faces r4 and r6 is taken by providing the reflecting face r6 on the object side than the condenser lens L1, whereby shielding by the reflecting face r6 may be reduced and yet the overvall length may be shortened.
COPYRIGHT: (C)1980,JPO&Japio
JP11116478A 1978-09-08 1978-09-08 Reflection-refraction type telephoto lens Pending JPS5538520A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP11116478A JPS5538520A (en) 1978-09-08 1978-09-08 Reflection-refraction type telephoto lens

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP11116478A JPS5538520A (en) 1978-09-08 1978-09-08 Reflection-refraction type telephoto lens

Publications (1)

Publication Number Publication Date
JPS5538520A true JPS5538520A (en) 1980-03-18

Family

ID=14554092

Family Applications (1)

Application Number Title Priority Date Filing Date
JP11116478A Pending JPS5538520A (en) 1978-09-08 1978-09-08 Reflection-refraction type telephoto lens

Country Status (1)

Country Link
JP (1) JPS5538520A (en)

Cited By (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS5796312A (en) * 1980-10-17 1982-06-15 Kantsueku Rudobuiku High speed catadioptric object lens system
JPS58122383A (en) * 1982-01-12 1983-07-21 マシネフアブリツク・ツエ−・リイカ−ルト・ベ−・ハウ Pump structure proper to transfer of high viscous substance
JPS58205124A (en) * 1982-05-26 1983-11-30 Nippon Kogaku Kk <Nikon> Reflecting and refracting telephoto lens
US4951078A (en) * 1988-05-16 1990-08-21 Minolta Camera Kabushiki Kaisha Camera system including catadioptric lens and catadioptric lens system used therein

Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3547525A (en) * 1967-08-31 1970-12-15 Perkin Elmer Corp Catadioptric system
JPS4966339A (en) * 1972-10-16 1974-06-27
JPS5136133A (en) * 1974-07-22 1976-03-26 Perkin Elmer Corp Kutsusetsuryono kogakusochi
JPS5376830A (en) * 1976-12-18 1978-07-07 Yashica Co Ltd Smalllsized telescopic reflection lens system

Patent Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3547525A (en) * 1967-08-31 1970-12-15 Perkin Elmer Corp Catadioptric system
JPS4966339A (en) * 1972-10-16 1974-06-27
JPS5136133A (en) * 1974-07-22 1976-03-26 Perkin Elmer Corp Kutsusetsuryono kogakusochi
JPS5376830A (en) * 1976-12-18 1978-07-07 Yashica Co Ltd Smalllsized telescopic reflection lens system

Cited By (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS5796312A (en) * 1980-10-17 1982-06-15 Kantsueku Rudobuiku High speed catadioptric object lens system
JPS58122383A (en) * 1982-01-12 1983-07-21 マシネフアブリツク・ツエ−・リイカ−ルト・ベ−・ハウ Pump structure proper to transfer of high viscous substance
JPH0477159B2 (en) * 1982-01-12 1992-12-07 Mashinefuaburiiku Tsuee Riikaaruto Bv
JPS58205124A (en) * 1982-05-26 1983-11-30 Nippon Kogaku Kk <Nikon> Reflecting and refracting telephoto lens
JPH0318162B2 (en) * 1982-05-26 1991-03-11 Nippon Kogaku Kk
US4951078A (en) * 1988-05-16 1990-08-21 Minolta Camera Kabushiki Kaisha Camera system including catadioptric lens and catadioptric lens system used therein

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