Abstract: The present invention relates to a microscope of which visibility, controllability and operability can be improved. In the microscope, an optical path and optical path of an image forming system are set so as to be perpendicular to each other when viewed from the top. In other words, in this microscope, there exists an ocular optical system that guides light, which propagates the optical path to optical path of the image forming system, to a user. The optical path is formed in a direction perpendicular to a direction of the light from a sample emitted from the ocular optical system to the user. The present invention can be applied to an inverted microscope.

Abstract: The resin composition of the present disclosure contains a fluorene derivative represented by the following formula (1) and a polyamide-series resin: Wherein R1 represents a substituent, k denotes an integer of 0 to 8, R2a, R2b, R2c, and R2d each represent a hydrogen atom or a substituent, R3a and R3b each represent a hydrogen atom or a substituent, and X1a and X1b each represent a group defined in the following formula (X1): wherein R4 and R5 each represent a hydrogen atom or a hydrocarbon group; or R4 and R5 bend together to form a heterocyclic ring containing the nitrogen atom adjacent to R4 and R5. The resin composition has an excellent fluidity.

Abstract: The fluorene derivative of the present disclosure is represented by the following formula (1): Wherein R1 represents a substituent, k denotes an integer of 0 to 8, R2a, R2b, R2c, and R2d each represent a hydrogen atom or a substituent, R3a and R3b each represent a hydrogen atom or a substituent, and X1a and X1b each represent a group defined in the following formula (X1): wherein R4 and R5 each represent a hydrogen atom or an aliphatic hydrocarbon group, provided that the case where both R4 and R5 are a hydrogen atom is excluded; or R4 and R5 bond together to form a heterocyclic ring containing the nitrogen atom adjacent to R4 and R5. The present disclosure provides a novel fluorene derivative useful as an additive for improving the properties of a resin, a method for producing the same and a use thereof.

Abstract: The resin composition of the present disclosure contains a fluorene derivative represented by the following formula (1) and a polyamide-series resin: Wherein R1 represents a substituent, k denotes an integer of 0 to 8, R2a, R2b, R2c, and R2d each represent a hydrogen atom or a substituent, R3a and R3b each represent a hydrogen atom or a substituent, and X1a and X1b each represent a group defined in the following formula (X1): wherein R4 and R5 each represent a hydrogen atom or a hydrocarbon group; or R4 and R5 bend together to form a heterocyclic ring containing the nitrogen atom adjacent to R4 and R5. The resin composition has an excellent fluidity.