JPS63172973U - - Google Patents

Info

Publication number

JPS63172973U

JPS63172973U JP6663587U JP6663587U JPS63172973U JP S63172973 U JPS63172973 U JP S63172973U JP 6663587 U JP6663587 U JP 6663587U JP 6663587 U JP6663587 U JP 6663587U JP S63172973 U JPS63172973 U JP S63172973U

Authority

JP

Japan

Prior art keywords

light

changing means

emitting element

receiving element

amount changing

Prior art date

1987-04-30

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

• 230000005484 gravity Effects 0.000 claims description 3
• 239000003792 electrolyte Substances 0.000 claims description 2
• 230000001681 protective effect Effects 0.000 claims description 2
• 239000008151 electrolyte solution Substances 0.000 claims 1
• QAOWNCQODCNURD-UHFFFAOYSA-N Sulfuric acid Chemical compound OS(O)(=O)=O QAOWNCQODCNURD-UHFFFAOYSA-N 0.000 description 4
• 238000010586 diagram Methods 0.000 description 3
• 229920003229 poly(methyl methacrylate) Polymers 0.000 description 1
• 239000004926 polymethyl methacrylate Substances 0.000 description 1