JPS5528013A - Episcope - Google Patents

Episcope

Info

Publication number
JPS5528013A
JPS5528013A JP10038078A JP10038078A JPS5528013A JP S5528013 A JPS5528013 A JP S5528013A JP 10038078 A JP10038078 A JP 10038078A JP 10038078 A JP10038078 A JP 10038078A JP S5528013 A JPS5528013 A JP S5528013A
Authority
JP
Japan
Prior art keywords
lens
rays
reflecting mirror
projected
light source
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
JP10038078A
Other languages
Japanese (ja)
Inventor
Susumu Tohata
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.)
Gakken Holdings Co Ltd
Original Assignee
Gakken 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 Gakken Co Ltd filed Critical Gakken Co Ltd
Priority to JP10038078A priority Critical patent/JPS5528013A/en
Publication of JPS5528013A publication Critical patent/JPS5528013A/en
Pending legal-status Critical Current

Links

Landscapes

  • Overhead Projectors And Projection Screens (AREA)
  • Projection Apparatus (AREA)

Abstract

PURPOSE: To let the optical axis from a light source intersect orthogonally to the object to be projected and perform effective utilization of rays, decrease in the capacity of light source, reduction in the diameter of projection lens and projection in a bright room by providing the light transmission part to the reflecting mirror interposed between the object to be projected and the light source.
CONSTITUTION: Rays from a light source 3 are entered to a condenser lens 5 via condensing and reflecting mirror 4, to be made to parallel rays which are then entered to a condenser lens 7 via reflecting mirror 6. From the lens 7, the rays are emitted so as to focus at the light transmission part 8a of the projecting are reflecting mirror 8, thence the rays transmit through the reflecting mirror 8 and Fresnel lens 11 and radiate the object to be projected 10A placed on a transparent stage 8 at a right angle. The rays having been reflected by the object to be projected 10A are condensed by the lens 11, are reflected by the reflecting mirror 8, are condensed by the projecting lens 12 disposed in the foucs position of the lens 11 and are projected to a screen 14.
COPYRIGHT: (C)1980,JPO&Japio
JP10038078A 1978-08-17 1978-08-17 Episcope Pending JPS5528013A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP10038078A JPS5528013A (en) 1978-08-17 1978-08-17 Episcope

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP10038078A JPS5528013A (en) 1978-08-17 1978-08-17 Episcope

Publications (1)

Publication Number Publication Date
JPS5528013A true JPS5528013A (en) 1980-02-28

Family

ID=14272400

Family Applications (1)

Application Number Title Priority Date Filing Date
JP10038078A Pending JPS5528013A (en) 1978-08-17 1978-08-17 Episcope

Country Status (1)

Country Link
JP (1) JPS5528013A (en)

Cited By (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4380380A (en) * 1981-06-11 1983-04-19 Back Frank G Episcopic projector
JPS59143906A (en) * 1983-02-08 1984-08-17 Mitsutoyo Mfg Co Ltd Measuring projector
JPH01176811A (en) * 1987-12-31 1989-07-13 Hiihaisuto Seiko Kk linear guide bearing
JPH06289485A (en) * 1992-09-09 1994-10-18 Randatsuku:Kk Overhead projection and film thereof
JPH0678949U (en) * 1993-02-26 1994-11-04 株式会社ランダック Projector

Citations (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS455690Y1 (en) * 1967-10-31 1970-03-19

Patent Citations (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS455690Y1 (en) * 1967-10-31 1970-03-19

Cited By (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4380380A (en) * 1981-06-11 1983-04-19 Back Frank G Episcopic projector
JPS59143906A (en) * 1983-02-08 1984-08-17 Mitsutoyo Mfg Co Ltd Measuring projector
JPH01176811A (en) * 1987-12-31 1989-07-13 Hiihaisuto Seiko Kk linear guide bearing
JPH06289485A (en) * 1992-09-09 1994-10-18 Randatsuku:Kk Overhead projection and film thereof
JPH0678949U (en) * 1993-02-26 1994-11-04 株式会社ランダック Projector

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