Process for producing optical component
An optical component, ultraviolet light technology, applied in optical components, optical components, optics, etc., can solve the problems of color changing optical characteristics, mechanical characteristics, fluctuations, etc., and achieve the effect of high transparency and heat resistance reliability
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example 1
[0070] Potting of the transparent ultraviolet light curable resin composition (α) was performed on a quartz glass substrate having a thickness of 0.5 mm, and thereafter, pressed on the quartz glass substrate by the above transparent ultraviolet light curable resin composition (α) Processing mold (I). Then, the ultraviolet filter (A) was placed on the processing mold (I), followed by irradiation with ultraviolet rays from a mercury lamp at 10 mW for 800 seconds. Thereafter, the processing mold (I) was demoulded to obtain a desired test piece (sample) (see FIG. 1 ).
example 2 and 3
[0071] Examples 2 and 3 and comparative examples 1 and 2
[0072] Test pieces (samples) were prepared in the same manner as in Example 1 except that the ultraviolet filter and the kind of processing mold were changed as shown in Table 1 described later.
[0073]For the test pieces of Examples 1 to 3 and Comparative Examples 1 and 2 thus obtained, changes in "transparency" due to their thermal degradation were measured and evaluated, and the results thereof are collectively shown in Table 1 below. Specifically, just after the specimen preparation (just after the sample preparation), after allowing the specimen to withstand an environment of 100°C for 1 hour (after 100°C x 1 hour), and after allowing the specimen to withstand 100°C After the environment was continued for 500 hours (after 100°C×500 hours), the yellowness index value (Y.I. value) of the test piece was measured in transparent mode by using a color computer (manufactured by Suga Test Instruments Co., Ltd., SM-T). W...
example 4
[0078] A 200 μm-thick film of a transparent UV-curable resin composition (β) was formed on a transparent protective plate (a) cut into a size of 50 mm×50 mm, and then, ultraviolet light was passed through a UV filter (A) at 10 mW. ) The film of the resin composition was irradiated for 100 seconds from the surface of the protective plate (a). The surface of the film of the resin composition thus semi-cured was pasted on a heat-resistant glass having a size of 50 mm×50 mm, and then it was pressed on the glass using a pressing machine. Then, the film of the resin composition was irradiated with ultraviolet rays at 10 mW for 300 seconds from the surface of the protective plate (a) through the ultraviolet filter (A). Thereafter, the film was thermally cured at 100° C. for 1 hour, and then, cut into a size of 20 mm wide and 30 mm long to prepare a test piece (see FIG. 3 ).
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