| 摘要 |
PROBLEM TO BE SOLVED: To provide a liquid filter having no flare problem. SOLUTION: This liquid filter 1 is composed disassemblably of two optical glasses 3, 4, a housing, three optical filters 21-23, and a mount adapter 6 for mounting the liquid filter 1 on a camera. A liquid injection hole 13 for injecting liquid into spaces formed by the optical glasses 3, 4 and the optical filters 21-23 is formed on the housing, and the liquid having roughly the same refractive index as the optical filters 21-23 is injected therefrom inside the housing. Hereby, even when plural optical filters are used, reflection of light on the filter surface is prevented to prevent generation of flare.
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