HK1000426A1 - Opaque projector - Google Patents

Opaque projector Download PDF

Info

Publication number
HK1000426A1
HK1000426A1 HK97102004A HK97102004A HK1000426A1 HK 1000426 A1 HK1000426 A1 HK 1000426A1 HK 97102004 A HK97102004 A HK 97102004A HK 97102004 A HK97102004 A HK 97102004A HK 1000426 A1 HK1000426 A1 HK 1000426A1
Authority
HK
Hong Kong
Prior art keywords
light source
light
mirror
projection
projector
Prior art date
Application number
HK97102004A
Other languages
English (en)
Chinese (zh)
Other versions
HK1000426B (en
Inventor
Koga Ritsuo
Hara Kuroudo
Original Assignee
Plus Corporation
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 Plus Corporation filed Critical Plus Corporation
Publication of HK1000426A1 publication Critical patent/HK1000426A1/xx
Publication of HK1000426B publication Critical patent/HK1000426B/xx

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
    • G03B21/08—Projectors or projection-type viewers; Accessories therefor affording epidiascopic projection
    • 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
    • G03B21/06—Projectors or projection-type viewers; Accessories therefor affording only episcopic projection
    • 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
    • Y10S353/04—Opaque

Landscapes

  • Physics & Mathematics (AREA)
  • General Physics & Mathematics (AREA)
  • Projection Apparatus (AREA)
  • Non-Portable Lighting Devices Or Systems Thereof (AREA)
  • Light Sources And Details Of Projection-Printing Devices (AREA)
HK97102004.4A 1988-11-25 1997-10-22 Opaque projector HK1000426B (en)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
JP63153441 1988-11-25
JP1988153441U JPH08673Y2 (ja) 1988-11-25 1988-11-25 反射型実物投影機

Publications (2)

Publication Number Publication Date
HK1000426A1 true HK1000426A1 (en) 1998-03-20
HK1000426B HK1000426B (en) 1998-03-20

Family

ID=

Also Published As

Publication number Publication date
JPH0273622U (enExample) 1990-06-05
JPH08673Y2 (ja) 1996-01-10
FR2639723A1 (fr) 1990-06-01
CA2003328A1 (en) 1990-05-25
US4979813A (en) 1990-12-25
GB2225446A (en) 1990-05-30
DE3938938A1 (de) 1990-06-07
GB2225446B (en) 1993-02-03
GB8925444D0 (en) 1989-12-28
CA2003328C (en) 1994-01-18
DE3938938C2 (de) 1994-05-05
FR2639723B1 (fr) 1994-01-14

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Legal Events

Date Code Title Description
PC Patent ceased (i.e. patent has lapsed due to the failure to pay the renewal fee)

Effective date: 20031110

PC Patent ceased (i.e. patent has lapsed due to the failure to pay the renewal fee)