DE9017123U1 - Schreibprojektor mit einer größeren und einer kleineren Arbeitsfläche - Google Patents

Schreibprojektor mit einer größeren und einer kleineren Arbeitsfläche

Info

Publication number
DE9017123U1
DE9017123U1 DE9017123U DE9017123U DE9017123U1 DE 9017123 U1 DE9017123 U1 DE 9017123U1 DE 9017123 U DE9017123 U DE 9017123U DE 9017123 U DE9017123 U DE 9017123U DE 9017123 U1 DE9017123 U1 DE 9017123U1
Authority
DE
Germany
Prior art keywords
condenser
work surface
writing
projector according
writing projector
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.)
Expired - Lifetime
Application number
DE9017123U
Other languages
German (de)
English (en)
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.)
PROCENT PATENT- und VERWALTUNGS AG ZUERICH CH
Original Assignee
PROCENT PATENT- und VERWALTUNGS AG ZUERICH CH
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 PROCENT PATENT- und VERWALTUNGS AG ZUERICH CH filed Critical PROCENT PATENT- und VERWALTUNGS AG ZUERICH CH
Priority to DE9017123U priority Critical patent/DE9017123U1/de
Publication of DE9017123U1 publication Critical patent/DE9017123U1/de
Priority to US07/673,383 priority patent/US5120125A/en
Priority to JP1991054204U priority patent/JPH0496730U/ja
Priority to SI9111940A priority patent/SI9111940A/sl
Anticipated expiration legal-status Critical
Expired - Lifetime legal-status Critical Current

Links

Classifications

    • G—PHYSICS
    • G03—PHOTOGRAPHY; CINEMATOGRAPHY; ANALOGOUS TECHNIQUES USING WAVES OTHER THAN OPTICAL WAVES; ELECTROGRAPHY; HOLOGRAPHY
    • G03B—APPARATUS OR ARRANGEMENTS FOR TAKING PHOTOGRAPHS OR FOR PROJECTING OR VIEWING THEM; APPARATUS OR ARRANGEMENTS EMPLOYING ANALOGOUS TECHNIQUES USING WAVES OTHER THAN OPTICAL WAVES; ACCESSORIES THEREFOR
    • G03B21/00—Projectors or projection-type viewers; Accessories therefor
    • G03B21/132—Overhead projectors, i.e. capable of projecting hand-writing or drawing during action
    • Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y10—TECHNICAL SUBJECTS COVERED BY FORMER USPC
    • Y10S—TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y10S353/00—Optics: image projectors
    • Y10S353/03—Transparent

Landscapes

  • Physics & Mathematics (AREA)
  • General Physics & Mathematics (AREA)
  • Overhead Projectors And Projection Screens (AREA)
DE9017123U 1990-12-19 1990-12-19 Schreibprojektor mit einer größeren und einer kleineren Arbeitsfläche Expired - Lifetime DE9017123U1 (de)

Priority Applications (4)

Application Number Priority Date Filing Date Title
DE9017123U DE9017123U1 (de) 1990-12-19 1990-12-19 Schreibprojektor mit einer größeren und einer kleineren Arbeitsfläche
US07/673,383 US5120125A (en) 1990-12-19 1991-03-22 Overhead projector with small and large stage surfaces
JP1991054204U JPH0496730U (enExample) 1990-12-19 1991-07-12
SI9111940A SI9111940A (sl) 1990-12-19 1991-12-16 Pisalni projektor z večjo in manjšo delovno površino

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
DE9017123U DE9017123U1 (de) 1990-12-19 1990-12-19 Schreibprojektor mit einer größeren und einer kleineren Arbeitsfläche

Publications (1)

Publication Number Publication Date
DE9017123U1 true DE9017123U1 (de) 1991-03-14

Family

ID=6860430

Family Applications (1)

Application Number Title Priority Date Filing Date
DE9017123U Expired - Lifetime DE9017123U1 (de) 1990-12-19 1990-12-19 Schreibprojektor mit einer größeren und einer kleineren Arbeitsfläche

Country Status (3)

Country Link
US (1) US5120125A (enExample)
JP (1) JPH0496730U (enExample)
DE (1) DE9017123U1 (enExample)

Families Citing this family (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US5302985A (en) * 1992-03-31 1994-04-12 Minnesota Mining And Manufacturing Company Overhead projector for LCD panel
US5227820A (en) * 1992-06-01 1993-07-13 Ctx-Electronics Corporation Shading device of the LCD projecting plate
US5400094A (en) * 1993-03-31 1995-03-21 Minnesota Mining And Manufacturing Company Condensers for overhead projectors
US5465127A (en) * 1995-03-15 1995-11-07 Minnesota Mining And Manufacturing Company Overhead projector with vibration control head
US5980045A (en) * 1996-06-03 1999-11-09 Canon Kabushiki Kaisha Image forming apparatus
US5779587A (en) 1996-08-30 1998-07-14 Curtiss Wright Flight Systems, Inc. Jam tolerant rotary actuator with shear pins and disengagement coupling

Family Cites Families (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS5262434A (en) * 1975-11-18 1977-05-23 Fuji Photo Film Co Ltd Image distortion correction device for projector
JPS5938436B2 (ja) * 1976-11-18 1984-09-17 松下電器産業株式会社 循環装置
US4080052A (en) * 1977-01-13 1978-03-21 Gte Sylvania Incorporated Overhead projection system with lens assembly having concentrically-oriented condensing lenses
JPS5596933A (en) * 1979-01-17 1980-07-23 Suraidetsukusu Kk Overhead projector
JPS59177524A (ja) * 1983-03-29 1984-10-08 Toshiba Electric Equip Corp オ−バ−ヘツドプロジエクタ−

Also Published As

Publication number Publication date
JPH0496730U (enExample) 1992-08-21
US5120125A (en) 1992-06-09

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