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US 8,569,541 B2Granted
Optical element compound, optical material, and optical element
AssigneeCanon Kabushiki Kaisha
InventorTerunobu Saitoh
Life of this patent
Estimating the term…
Abstract
An optical material organic compound having characteristics that the dispersion characteristic (Abbe number (νd)) and the secondary dispersion characteristic (θg,F) of the refractive index are high, the transmittance in the visible light region is high, and the chromatic aberration correction function delivers high performance, which represented by the general formula (1) or (2) is provided.
Claims19
An optical material organic compound represented by the following general formula (1):
- in the formula (1), X and Y represent individually a substituent selected from the following substituents,
- where a symbol * represents an end bonded to R1 or R2, R1 and R2 represent individually a substituent selected from the group consisting of a hydrogen atom, an alkyl group having the carbon number of 1 or 2, and a (meth)acryloyl group, Z1 and Z2 represent individually a substituent selected from the group consisting of a hydrogen atom, a halogen atom, an alkoxy group having the carbon number of 1 or 2, an alkylthio group having the carbon number of 1 or 2, and a substituted or unsubstituted alkyl group having the carbon number of 1 or 2, a and b represent individually an integer of 0 to 2, two Z1s may be the same or different when a is 2, and two Z2s may be the same or different when b is 2.
An optical material organic compound represented by the following general formula (3):
- in the formula (3), X represents a substituent selected from the following substituents,
- where a symbol * represents an end bonded to R11,
- Y represents a substituent selected from the following substituents,
- where a symbol * represents an end bonded to R12,
- R11 and R12 represent individually a substituent selected from the group consisting of a hydrogen atom, an alkyl group having the carbon number of 1 or 2, and a (meth)acryloyl group,
- Z3 represents a substituent selected from the group consisting of a hydrogen atom, a halogen atom, an alkoxy group having the carbon number of 1 or 2, an alkylthio group having the carbon number of 1 or 2, and a substituted or unsubstituted alkyl group having the carbon number of 1 or 2,
- c represents an integer of 0 to 2, and
- two Z3s may be the same or different when c is 2.
5 more elements
Dependencies are inferred from the claim text.