摘要:
The present invention provides compounds represented by general formula (I): or pharmaceutical acceptable salts thereof, wherein R1 and R2 are each hydrogen, lower acyl, lower alkoxycarbonyl or the like; R3 is halo-lower alkyl, lower acyl, halo-lower alkylcarbonyl, cycloalkylcarbonyl, optionally substituted arylcarbonyl, lower alkoxycarbonyl or the like; R4 is lower alkyl, halo-lower alkyl, cycloalkyl, lower alkoxy-lower alkyl or the like, which exhibit potent COMT inhibitory activities. The present invention also provides pharmaceutical compositions containing said compound, and uses thereof.
摘要:
A mold with which a molded product in a desired shape with an aspherical curved surface is molded can be designed with high precision by correcting shape deformation of the molded product molded from the mold.A mold 10 in which use surfaces 16 of an upper mold 11 and a lower mold 12 are formed to be design curved surfaces of the optical lens in a spherical shape is prepared. A curved surface shape of the optical lens molded from the mold is measured, a measured value is approximated by an equation (1) which is an equation of an aspherical surface and a curved surface of the molded optical lens is specified as an aspherical surface. Information corresponding to an error between the curved surface of the optical lens specified by the equation of the aspherical surface and the above-described design curved surface is compiled into database for each of characteristics of the optical lens as correction information for molding the optical lens of which curved surface is in the spherical shape. By using the correction information compiled into database, design values of the use surfaces in the upper mold and the lower mold of the mold with which the optical lens of which curved surface in the aspherical shape is molded are corrected to design them. [ Mathematical expression 10 ] Z = C ρ 2 1 + 1 - ( 1 + K ) C 2 ρ 2 + ∑ i = 2 n A 2 i ρ 2 i ( 1 )
摘要:
A top plate conveyor device, in which vibrations and noises are reduced, and the structure is simple and the production assembly and handling are easy. Top plates 110 are removably provided on a rubber toothed belt 120 by engagement members 111 provided on the back surfaces of the top plates 110, and engagement members 111 include sandwiching portions 112 which sandwich the toothed belt 120 from both outer sides in the width direction and terminate in pawl portions 113, which snap-connect the top plates to the toothed belt 120.
摘要:
The difference in optical performance, such as astigmatism, the radius of curvature of a first surface, etc., of left and right lenses is kept at or below a specific level, and the difference in optical performance and the radius of curvature of the first surfaces between new and old lenses when the wearer changes lenses is also kept at or below a specific level, the result being lenses that are more comfortable to wear and are more attractive.
摘要:
A progressive multifocal lens is provided with a near part N, a defined vision part F, and an intermediate part P along the main meridian curve MM'. The near center B of the lens is separated from near eyepoint E by a distance of substantially 2 mm to 8 mm in the lower part along the main meridian curve. The refractive power K.sub.E at the near eyepoint, refractive power K.sub.A at the defined center A, and refractive power K.sub.B at the near center B satisfy the condition:0.6
摘要:
An ophthalmic apparatus having a smaller size while guaranteeing a required optical performance from each optical system component is provided. The ophthalmic apparatus includes a fogging optical system for removing an accommodation power of an eye being examined so that the eye is properly relaxed. A detecting optical system is used for detecting information relating to the eye being examined. The fogging optical system and the detecting optical system share a common lens group containing at least one cemented lens. Positive and negative lenses are included in the cemented lens. The common lens group, as a whole, has a positive refractive power.
摘要:
Control operations to access a memory changes respective priorities of the operations depending on the situation of the memory, and the operations are arbitrated and scheduled according to the respective, changed priorities, in order to avoid concentration on or rejection of a specific memory access operations and to eliminate an ineffective period. This realizes an efficient memory system without increasing the capacity of a buffer memory, the width of a memory bus, or an operating frequency.
摘要:
An eyepiece having an apparent field of view of 40.degree. or greater which is provided, in succession from the eye point side, with a first lens unit G1 having positive refractive power as a whole, and a second lens unit G2 having negative refractive power as a whole and having a cemented negative lens disposed with a virtual image formed by the eyepiece interposed between itself and the first lens unit G1, satisfies the following conditions:1.0
摘要:
An eye measuring apparatus includes a refracting power detector for measuring the refracting power of an eye to be examined, a fogging producer for moving the position of a target image in the direction of the optical axis of the eye to be examined, and a feedback controller for receiving an output from the refracting power detector, and moving the position of the target image in a direction, in which accommodation of the eye to be examined is relaxed, in accordance with refracting power information measured in a predetermined meridian direction of the eye to be examined and astigmatic information of the eye to be examined obtained from refracting power values measured in a plurality of meridian directions of the eye to be examined.
摘要:
An ophthalmologic apparatus is provided with an illuminating optical system for illuminating a fundus oculi of an inspected eye with an illuminating light, a photographing and observing optical system for photographing and observing the fundus oculi of the inspected eye illuminated with the illuminating light by the illuminating optical system, a reference mark projecting optical system for projecting a reference mark on the fundus oculi of the inspected eye, an in-focus detecting optical system for detecting an in-focus condition between the photographing and observing optical system and the fundus oculi of the inspected eye by receiving an image of the reference mark projected on the fundus oculi of the inspected eye by the reference mark projecting optical system, and positional adjustment detecting optical system for detecting a positional adjustment between the ophthalmologic apparatus and the inspected eye by receiving a beam of light which is radiated from the reference mark projecting optical system and is reflected by a cornea of the inspected eye. The reference mark projecting optical system has a light source for radiating a beam of infrared light and/or a beam of near infrared light.