Retroreflective material
AssigneeGunma University
InventorsHiromasa Oku, Takahiro Uji
Life of this patent
Estimating the term…
Abstract
A retroreflective material having high retroreflective performance while being edible is provided with a reflector main body that has optical transparency. The reflector main body is formed from agar. One side of the reflector main body constitutes an incident surface where incident light enters into the reflector main body. The other side of the reflector main body formed as a retroreflective surface that reflects incident light that has entered to an inner part of the reflector main body in a direction substantially parallel to an incident direction.
Claims5
A retroreflective material comprising a reflector main body having optical transparency, wherein:
- the reflector main body is formed from agar;
- one surface side of the reflector main body constitutes a plane of incidence where incident light enters to an inner part of the reflector main body;
- and
- the other side of the reflector main body is formed as a retroreflective surface that reflects incident light that has entered to an inner part of the reflector main body in a direction substantially parallel to an incident direction.
A manufacturing method for a retroreflective material, comprising:
- a step of obtaining an agar solution by adding agar material to water and heating;
- a step of transferring a shape of a base material surface having a shape of a corner cube type retroreflective surface to the agar solution by bringing the agar solution into contact with the base material surface;
- and
- a step of forming a retroreflective material having a retroreflective surface by causing the agar solution, in a state of having been brought into contact with the base material surface, to solidify.
Dependencies are inferred from the claim text.