G - Physics – 02 – B
Patent
G - Physics
02
B
G02B 6/028 (2006.01) G02B 1/04 (2006.01)
Patent
CA 2249161
A graded-refractive-index optical plastic material comprising an amorphous fluorine-containing polymer (A) having substantially no C-H bond, and at least one fluorine-containing polycyclic compound (B) having a refractive index higher by at least 0.005 than the fluorine-containing polymer (A), wherein the fluorine-containing polycyclic compound (B) is distributed in the fluorine-containing polymer (A) with a concentration gradient such that the concentration decreases in a direction of from the center to the periphery, and the fluorine-containing polycyclic compound (B) is at least one fluorine-containing polycyclic compound selected from the group consisting of the following compounds (B1), (B2) and (B3): (B1) a fluorine-containing non-condensed polycyclic compound having at least two fluorine-containing rings bonded by a bond containing at least one member selected from the group consisting of a triazine ring, an oxygen atom, a sulfur atom, a phosphorus atom and a metal atom, each of said fluorine-containing rings being a carbon ring or a heterocyclic ring and having a fluorine atom or a perfluoroalkyl group, said polycyclic compound having substantially no C-H bond; (B2) a fluorine-containing non-condensed polycyclic compound having at least three fluorine-containing rings bonded directly or by a bond containing a carbon atom, each of said fluorine-containing rings being a carbon ring or a heterocyclic ring and having a fluorine atom or a perfluoroalkyl group, said polycyclic compound having substantially no C-H bond; (B3) a fluorine-containing condensed polycyclic compound which is a condensed polycyclic compound composed of at least three carbon rings or heterocyclic rings, and which has substantially no C-H bond.
Matière plastique optique à indice de réfraction gradué, renfermant un polymère (A) fluoré amorphe, pratiquement exempt de liaison C-H, et au moins un composé (B) polycyclique fluoré, possédant un indice de réfraction dépassant d'au moins 0,005 celui du polymère (A) fluoré; le composé polycyclique fluoré (B) est distribué dans le polymère fluoré (A), avec un gradient de concentration diminuant dans une direction allant du centre vers la périphérie. Le composé polycyclique fluoré (B) est un composé polycyclique renfermant au moins un fluor, choisi dans le groupe constitué des composés (B1), (B2) et (B3) suivants: (B1) est un composé polycyclique fluoré non condensé, renfermant au moins deux cycles fluorés, liés par une liaison dont au moins un membre est choisi parmi un cycle triazine, un atome d'oxygène, un atome de soufre, un atome de phosphore et un atome de métal, chacun desdits cycles fluorés étant un cycle de carbones ou un hétérocycle, portant un atome de fluor ou un groupe perfluoroalkyle; ledit composé polycyclique ne renferme pratiquement aucune liaison C-H; (B2) est un composé polycyclique, fluoré, comportant au moins trois cycles fluorés, liés directement ou via une liaison contenant un atome de carbone, chacun desdits cycles fluorés étant un cycle de carbones ou un hétérocycle portant un atome de fluor ou un groupe perfluoroalkyle, et ledit composé polycyclique ne renfermant pratiquement aucune liaison C-H; (B3) est un composé polycyclique condensé fluoré, soit un composé polycyclique condensé, composé d'au moins trois cycles de carbones ou hétérocycles, avec pratiquement aucune liaison C-H.
Irisawa Jun
Murofushi Hidenobu
Okazoe Takashi
Sugiyama Norihide
Tamura Masayuki
Asahi Glass Company Ltd.
Smart & Biggar
LandOfFree
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