JPS63101901U - - Google Patents

Info

Publication number

JPS63101901U

JPS63101901U JP1986203346U JP20334686U JPS63101901U JP S63101901 U JPS63101901 U JP S63101901U JP 1986203346 U JP1986203346 U JP 1986203346U JP 20334686 U JP20334686 U JP 20334686U JP S63101901 U JPS63101901 U JP S63101901U

Authority

JP

Japan

Prior art keywords

light

fresnel lens

condensing

refractive surfaces

stepped portion

Prior art date

1986-12-24

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

Links

• Espacenet
• Global Dossier
• Discuss

• 230000003287 optical effect Effects 0.000 claims 1
• 238000010521 absorption reaction Methods 0.000 description 1
• 238000010586 diagram Methods 0.000 description 1
• 230000004907 flux Effects 0.000 description 1
• 238000005286 illumination Methods 0.000 description 1