JPS4927295B1 - - Google Patents

Info

Publication number
JPS4927295B1
JPS4927295B1 JP212670A JP212670A JPS4927295B1 JP S4927295 B1 JPS4927295 B1 JP S4927295B1 JP 212670 A JP212670 A JP 212670A JP 212670 A JP212670 A JP 212670A JP S4927295 B1 JPS4927295 B1 JP S4927295B1
Authority
JP
Japan
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
JP212670A
Other languages
Japanese (ja)
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 filed Critical
Priority to JP212670A priority Critical patent/JPS4927295B1/ja
Priority to GB6152770A priority patent/GB1333780A/en
Priority to US00102788A priority patent/US3762809A/en
Priority to NL7100126A priority patent/NL7100126A/xx
Publication of JPS4927295B1 publication Critical patent/JPS4927295B1/ja
Pending 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

Landscapes

  • Physics & Mathematics (AREA)
  • General Physics & Mathematics (AREA)
  • Overhead Projectors And Projection Screens (AREA)
  • Optical Elements Other Than Lenses (AREA)
JP212670A 1970-01-07 1970-01-07 Pending JPS4927295B1 (enrdf_load_stackoverflow)

Priority Applications (4)

Application Number Priority Date Filing Date Title
JP212670A JPS4927295B1 (enrdf_load_stackoverflow) 1970-01-07 1970-01-07
GB6152770A GB1333780A (en) 1970-01-07 1970-12-29 Optical arrangements
US00102788A US3762809A (en) 1970-01-07 1970-12-30 Original mount or holder for optical projection system
NL7100126A NL7100126A (enrdf_load_stackoverflow) 1970-01-07 1971-01-06

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP212670A JPS4927295B1 (enrdf_load_stackoverflow) 1970-01-07 1970-01-07

Publications (1)

Publication Number Publication Date
JPS4927295B1 true JPS4927295B1 (enrdf_load_stackoverflow) 1974-07-16

Family

ID=11520633

Family Applications (1)

Application Number Title Priority Date Filing Date
JP212670A Pending JPS4927295B1 (enrdf_load_stackoverflow) 1970-01-07 1970-01-07

Country Status (2)

Country Link
JP (1) JPS4927295B1 (enrdf_load_stackoverflow)
GB (1) GB1333780A (enrdf_load_stackoverflow)

Families Citing this family (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN113238453A (zh) * 2021-05-24 2021-08-10 青岛海信激光显示股份有限公司 一种投影屏幕及投影系统

Also Published As

Publication number Publication date
GB1333780A (en) 1973-10-17

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