Abstract: A polarization conversion element is equipped with an element main body having a light incident surface and a light emission surface that are generally in parallel with each other, and a phase difference plate bonded to the light emission surface of the element main body. The element main body includes a plurality of light-transmissive substrates that are sequentially bonded at a predetermined angle with respect to the light emission surface, polarization separating films and reflection films that are alternately provided between the plurality of light-transmissive substrates, and adhesive layers formed between the plurality of light-transmissive substrates, respectively. The adhesive layers are each formed from ultraviolet light curing adhesive to a thickness between 5 ?m and 10 ?m.

Abstract: A polarization conversion element is equipped with an element main body having a light incident surface and a light emission surface that are generally in parallel with each other, and a phase difference plate bonded to the light emission surface of the element main body. The element main body includes a plurality of light-transmissive substrates that are sequentially bonded at a predetermined angle with respect to the light emission surface, polarization separating films and reflection films that are alternately provided between the plurality of light-transmissive substrates, and adhesive layers formed between the plurality of light-transmissive substrates, respectively. The adhesive layers are each formed from ultraviolet light curing adhesive to a thickness between 5 ?m and 10 ?m.

Abstract: The present device, generates external force tending to open the O-ring formed by the thumb and another finger of the examiner and composed of a pair of artificial finger sections including two artificial fingers 8A and 8B. The artificial fingers 8A and 8B include two slender tubes 12 and 14 having corrugated wall faces, core members 16 for maintaining the parallel arrangement of the tubes 12 and 14, and thin bag-like covering members 18 consisting of a high polymer for covering the outer periphery of the tubes 12 and 14. Pump sections 10 for controlling movement of low viscosity hydraulic oil serving as a fluid sealed in fluid chambers 12a and 14a are integrally connected to base ends of the artificial fingers 8A and 8B.

Abstract: In the present device, means for generating external force tending to open the O-ring formed by the thumb and another finger of the examinee is composed of a pair of artificial finger sections including two artificial fingers 8A and 8B. The artificial fingers 8A and 8B include two slender tubes 12 and 14 having corrugated wall faces, core members 16 for maintaining the parallel arrangement of the tubes 12 and 14, and thin bag-like covering members 18 consisting of a high polymer for covering the outer periphery of the tubes 12 and 14. Pump sections 10 for controlling movement of low viscosity hydraulic oil serving as a fluid sealed in fluid chambers 12a and 14a are integrally connected to base ends of the artificial fingers 8A and 8B.

Abstract: There is provided a multifocal contact lens having a lens curve formed by altermately arranging a plurality of curved surfaces for far vision and a plurality of curved surfaces for near vision in the form of concentric zones, and a die for forming the contact lens, and a method for producing the contact lens. Each of the curved surfaces (F1, F2, . . . ) for far vision of the lens curve (2) has a center (O.sub.F1, O.sub.F2, . . . ) of curvature on an optical axis and a radius (R.sub.F1, R.sub.F2, . . . ) of curvature, which is set so that a ray being incident on the corresponding curved surface and being parallel to the optical axis forms an image at a location near a single focal point (F.sub.F) for far vision on the optical axis, and each of the curved surfaces (N1, N2, . . . ) for near vision of the lens curve (2) has a center (O.sub.N1, O.sub.N2, . . . ) of curvature on the optical axis and a radius (R.sub.N1, R.sub.N2, . . .

Abstract: In a contact lens (1) provided with a front curve (2) formed with a plurality of distance portion curved surfaces (F.sub.1, F.sub.2, . . . ) for seeing a distant place . . . )and a plurality of near portion curved surfaces (N.sub.1, N.sub.2, for seeing a near place arranged alternately and repeatedly in concentric zone shape, the distance portion curved surfaces formed at least a central zone of the front curve have respective curvature centers (O.sub.F1, O.sub.F2, . . .