Abstract: An optical displacement detection apparatus includes a scale and a sensor head. The scale has a first and second pattern. The head includes a first photodetector that detects a beam through the first pattern and generates a first signal, and a second photodetector that detects the beam through the second pattern and generates a second signal. The first and second signals include a first component, and a second component that corresponds to an absolute displacement of the scale. The first pattern, the second pattern, the first photodetector, the second photodetector, and a beam source are disposed such that the detection of the first photodetector and the detection of the second photodetector are performed correlatively.

Abstract: An optical resin film is provided, in which a wavelength dispersion of a retardation in planar direction and a wavelength dispersion of a retardation in thickness direction are independently controlled, is provided and has at least an additive having a negative intrinsic birefringence.

Abstract: An optical performance humidity dependency improving agent for cellulose acylate film, which contains a compound having a nucleic acid base skeleton, is capable of preventing the fluctuation of Re and Rth of the film against the humidity change in usage environments.

Abstract: A cellulose acylate film comprising at least one cellulose acylate, at least one sterol derivative represented by formula (1), and at least one saccharide derivative and/or at least one oligomer plasticizer is disclosed. R1, R2 and R3 represents a hydrogen atom, a hydroxyl group or a substituent represented by -L-R*, provided that at least one of them represents the substituent represented by -L-R*; L represents a single bond or a divalent connecting group selected from the group consisting of —O—, —CO—, —CONR6—, —CH2— and a combination thereof, R* represents a substituted or unsubstituted aromatic ring group, heterocyclic group or alkyl group; R4 represents a carboxyl group or —CHR7—CH(CH3)2; R5 represents a hydrogen atom or a methyl group.

Abstract: A triazine derivative represented by formula (I) below: where, in formula (I), each of M1a, M1b, M2a and M2b is a divalent group comprising one or more substituted or non-substituted aromatic rings; each of n1 and n2 is 0 or 1; each of R1 and R2 represents a hydrogen atom or substituent; and X represents a substituent; is disclosed.

Abstract: A cellulose composition, containing: a cellulose compound; a compound represented by formula (I); and a low molecular weight compound (A); wherein molecular absorption wavelength of the compound (A) derived from an electric dipole transition moment My in a direction approximately orthogonal to a molecular long axis direction, is longer than that derived from an electric dipole transition moment Mx in a direction approximately parallel to the molecular long axis direction; and wherein |My| is larger than |Mx|: wherein L1 to L4 represent a single bond or a specific divalent linking group; Y1 and Y2 represent an alkyl group; Ra, Rb and Rc represent a substituent; m represents an integer of 0 to 4; t represents an integer of 1 or 2; and m11 and m12 represent an integer of 0 to 10.

Abstract: An optical compensation sheet is provided and has a stretched polymer film or stretched cellulose acylate film and at least one optical anisotropic layer containing a liquid crystal compound, and has retardations satisfying the specific relationships defined in the specification.

Abstract: A liquid crystal composition, containing a compound represented by formula (I) and a compound represented by formula (II); and an anisotropic material containing the liquid crystal composition: Q1-SP1-X1-MG-X2-SP2-Q2??Formula (I) wherein, Q1 and Q2 represent a polymerizable group, SP1 and SP2 represent a spacer group, X1 and X2 represent a linking group, MG represents a mesogen group, Ra, Rb and Rc represent -L1-R1, -L2-R2 or —NHR, at least one of Ra, Rb and Rc is —NHR, L1 and L2 represent a single bond or a divalent linking group, R1 and R2 represent a hydrogen atom or a substituent, and R represents a group having a polymerizable group.

Abstract: An optical compensation sheet is provided and has a stretched polymer film or stretched cellulose acylate film and at least one optical anisotropic layer containing a liquid crystal compound, and has retardations satisfying the specific relationships defined in the specification.

Abstract: An optical resin film is provided, in which a wavelength dispersion of a retardation in planar direction and a wavelength dispersion of a retardation in thickness direction are independently controlled, is provided and has at least an additive having a negative intrinsic birefringence.

Abstract: An electronic endoscope apparatus has a distal part, an imaging unit, a light emitting unit, and a transmitting unit. The imaging unit converts light applied to the distal part, into an electrical signal. The light emitting unit converts the electrical signal supplied from the imaging unit, into an optical signal. The transmitting unit, which is attached to the distal part, guides the optical signal supplied from the light emitting unit. The electrical signal output from the imaging unit is converted into an optical signal. This optical signal is transmitted from the distal part through the transmitting unit.

Abstract: A liquid crystal composition, containing a compound represented by formula (I) and a compound represented by formula (II); and an anisotropic material containing the liquid crystal composition: wherein, Q1 and Q2 represent a polymerizable group, SP1 and SP2 represent a spacer group, X1 and X2 represent a linking group, MG represents a mesogen group, Ra, Rb and Rc represent -L1-R1, -L2-R2 or —NHR, at least one of Ra, Rb and Rc is —NHR, L1 and L2 represent a single bond or a divalent linking group, R1 and R2 represent a hydrogen atom or a substituent, and R represents a group having a polymerizable group.

Abstract: A novel compound is disclosed. The compound is represented by a formula (I) below: Q1-SP1—X1-A-B—C-D-X2—SP2-Q2 ??(I) where, Q1 and Q2 respectively represent a polymerizable group; SP1 and SP2 respectively represent a spacer group; X1 and X2 respectively represent a linking group; and A, B, C and D respectively represent a divalent group selected from formulae IIa, IIb and IIc below: where, Ra, Rb and Rc respectively represent a substituent group, na, nb and nc respectively represent an integer of 0 to 4, a plurality of Ra, Rb or Rc may be same or different each other when na, nb and nc are respectively integers of 2 or more; provided that at least two of A, B, C and D is a divalent group represented by the formula IIa, or at least two of them is a divalent group represented by the formula IIb.