Resin composition for production of optical element, the optical element, and projection screen
AssigneeDai Nippon Printing Co., Ltd.
InventorYasuhiro Doi
Life of this patent
Estimating the term…
Abstract
A resin composition for production of an optical element being adapted to form the optical element has a characteristics of which, when W1/2 (° C.) represents, regarding a crest portion in a loss factor/temperature curve obtained by measuring the loss factor of the resin composition relative to a change in the temperature, the width of the crest portion at the position of ½ of the maximum value of the loss factor in the crest portion temperature range; W0.1 (° C.) represents, regarding the crest portion, the width of the crest portion at the position of 0.1 of the maximum value of the loss factor; and ΔW (° C.), the difference between the widths of the two crest portions, is set to be ΔW=W0.1−W1/2, the ΔW is in the range of from 16° C. to 31° C.
Claims24
A resin composition for production of an optical element being adapted to form the optical element, wherein, when W1/2 (° C.) represents, regarding a crest portion in a loss factor/temperature curve obtained by measuring the loss factor of the resin composition relative to a change in the temperature, the width of the crest portion at the position of ½ of the maximum value of the loss factor in the crest portion temperature range;
- W0.1 (° C.) represents, regarding the crest portion, the width of the crest portion at the position of 0.1 of the maximum value of the loss factor;
- and ΔW (° C.), the difference between the widths of the two crest portions, is set to be ΔW=W0.1−W1/2 the ΔW is in the range of from 16° C. to 31° C.
A resin composition for production of an optical element being adapted to form the optical element, wherein, when W1/2 (° C.) represents, regarding a crest portion in a loss factor/temperature curve obtained by measuring the loss factor of the resin composition relative to a change in the temperature, the width of the crest portion at the position of ½ of the maximum value of the loss factor in the crest portion temperature range;
- and W0.1 (° C.) represents, regarding the crest portion, the width of the crest portion at the position of 0.1 of the maximum value of the loss factor, W0.1/W1/2 representing the ratio between the widths of the two crest portions is in the range of from 1.4 to 2.7.
A resin composition for production of an optical element being adapted to form the optical element, wherein, when W1/2 (° C.) representing, regarding a crest portion in a loss factor/temperature curve obtained by measuring the loss factor of the resin composition relative to a change in the temperature, the width of the crest portion at the position of ½ of the maximum value of the loss factor in the crest portion temperature range is in the range of from 13° C. to 50° C. and the value TP(° C.) of the temperature at the maximum value of the loss factor is in the range of from 18° C. to 47° C. or from 52° C. to 80° C.
An optical element the whole or a part of which is formed with a resin composition, wherein the resin composition has a characteristics of which, when W1/2 (° C.) represents, regarding a crest portion in a loss factor/temperature curve obtained by measuring the loss factor of the resin composition relative to a change in the temperature, the width of the crest portion at the position of ½ of the maximum value of the loss factor in the crest portion temperature range;
- W0.1 (° C.) represents, regarding the crest portion, the width of the crest portion at the position of 0.1 of the maximum value of the loss factor;
- and ΔW (° C.), the difference between the widths of the two crest portions, is set to be ΔW=W0.1−W1/2, the ΔW is in the range of from 16° C. to 31° C.
An optical element the whole or a part of which is formed with a resin composition, wherein the resin composition has a characteristics of which, when W1/2 (° C.) represents, regarding a crest portion in a loss factor/temperature curve obtained by measuring the loss factor of the resin composition relative to a change in the temperature, the width of the crest portion at the position of ½ of the maximum value of the loss factor in the crest portion temperature range;
- and W0.1 (° C.) represents, regarding the crest portion, the width of the crest portion at the position of 0.1 of the maximum value of the loss factor, W0.1/W1/2 representing the ratio between the widths of the two crest portions is in the range of from 1.4 to 2.7.
An optical element the whole or a part of which is formed with a resin composition, wherein the resin composition has a characteristics of which, when W1/2 (° C.) representing, regarding a crest portion in a loss factor/temperature curve obtained by measuring the loss factor of the resin composition relative to a change in the temperature, the width of the crest portion at the position of ½ of the maximum value of the loss factor in the crest portion temperature range is in the range of from 13° C. to 50° C. and the value TP(° C.) of the temperature at the maximum value of the loss factor is in the range of from 18° C. to 47° C. or from 52° C. to 80° C.
A projection screen comprising a lenticular lens sheet and an optical element the whole or a part of which is formed with a resin composition, wherein the resin composition has a characteristics of which, when W1/2 (° C.) represents, regarding a crest portion in a loss factor/temperature curve obtained by measuring the loss factor of the resin composition relative to a change in the temperature, the width of the crest portion at the position of ½ of the maximum value of the loss factor in the crest portion temperature range;
- W0.1 (° C.) represents, regarding the crest portion, the width of the crest portion at the position of 0.1 of the maximum value of the loss factor;
- and ΔW (° C.), the difference between the widths of the two crest portions, is set to be ΔW=W0.1−W1/2, the ΔW is in the range of from 16° C. to 31° C.
A projection screen comprising a lenticular lens sheet and an optical element the whole or a part of which is formed with a resin composition, wherein the resin composition has a characteristics of which, when W1/2 (° C.) represents, regarding a crest portion in a loss factor/temperature curve obtained by measuring the loss factor of the resin composition relative to a change in the temperature, the width of the crest portion at the position of ½ of the maximum value of the loss factor in the crest portion temperature range;
- and W0.1 (° C.) represents, regarding the crest portion, the width of the crest portion at the position of 0.1 of the maximum value of the loss factor, W0.1/W1/2 representing the ratio between the widths of the two crest portions is in the range of from 1.4 to 2.7.
A projection screen comprising a lenticular lens sheet and an optical element the whole or a part of which is formed with a resin composition, wherein the resin composition has a characteristics of which, when W1/2 (° C.) representing, regarding a crest portion in a loss factor/temperature curve obtained by measuring the loss factor of the resin composition relative to a change in the temperature, the width of the crest portion at the position of ½ of the maximum value of the loss factor in the crest portion temperature range is in the range of from 13° C. to 50° C. and the value TP(° C.) of the temperature at the maximum value of the loss factor is in the range of from 18° C. to 47° C. or from 52° C. to 80° C.
Dependencies are inferred from the claim text.