JPS5249041A - Fresnel lenses in which dazzling light is preventd - Google Patents

Fresnel lenses in which dazzling light is preventd

Info

Publication number
JPS5249041A
JPS5249041A JP12456275A JP12456275A JPS5249041A JP S5249041 A JPS5249041 A JP S5249041A JP 12456275 A JP12456275 A JP 12456275A JP 12456275 A JP12456275 A JP 12456275A JP S5249041 A JPS5249041 A JP S5249041A
Authority
JP
Japan
Prior art keywords
preventd
fresnel lenses
dazzling light
lenses
fresnel
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.)
Granted
Application number
JP12456275A
Other languages
English (en)
Japanese (ja)
Other versions
JPS578441B2 (enrdf_load_stackoverflow
Inventor
Kenichi Matsuda
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.)
Individual
Original Assignee
Individual
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 Individual filed Critical Individual
Priority to JP12456275A priority Critical patent/JPS5249041A/ja
Publication of JPS5249041A publication Critical patent/JPS5249041A/ja
Publication of JPS578441B2 publication Critical patent/JPS578441B2/ja
Granted legal-status Critical Current

Links

Landscapes

  • Overhead Projectors And Projection Screens (AREA)
JP12456275A 1975-10-16 1975-10-16 Fresnel lenses in which dazzling light is preventd Granted JPS5249041A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP12456275A JPS5249041A (en) 1975-10-16 1975-10-16 Fresnel lenses in which dazzling light is preventd

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP12456275A JPS5249041A (en) 1975-10-16 1975-10-16 Fresnel lenses in which dazzling light is preventd

Publications (2)

Publication Number Publication Date
JPS5249041A true JPS5249041A (en) 1977-04-19
JPS578441B2 JPS578441B2 (enrdf_load_stackoverflow) 1982-02-16

Family

ID=14888540

Family Applications (1)

Application Number Title Priority Date Filing Date
JP12456275A Granted JPS5249041A (en) 1975-10-16 1975-10-16 Fresnel lenses in which dazzling light is preventd

Country Status (1)

Country Link
JP (1) JPS5249041A (enrdf_load_stackoverflow)

Also Published As

Publication number Publication date
JPS578441B2 (enrdf_load_stackoverflow) 1982-02-16

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