Abstract: In an objective lens mounted to an endoscope having an enlarging function and enabling a switch to wide-field viewing, a movable lens group is moved so as to adjust the amount of curvature of field such that the image quality at marginal parts of a picture becomes favorable according to the form of an object while keeping a substantially constant magnification.

Abstract: For the purpose of improving upon a clip-on attachment spectacles, an easy assembly therefor is provided herein, which assembly takes advantage of such merit of the prior clip-on attachment spectacles as the bridge portion thereof elastically contracts and extends so as to hand onto the frontal surface of the lenses of the spectacles in use, but which assembly structurally facilitates not only the extension and contraction of the bridge portion, but also the engagement between the bridge portion of the attachment spectacles and the glasses thereof as well as that between the hooks to be hung onto the lenses of the spectacles in use and the attachment glasses.

Abstract: A collimator lens comprises, successively from a parallel luminous flux side, a first lens having a positive refracting power, second and third lenses having a negative composite refracting power, a fourth lens having a positive refracting power, and a fifth lens having a positive refracting power. The second and third lenses are cemented together. One of the second and third lenses has a negative refracting power, whereas the other has a positive refracting power. The collimator lens further satisfies Bƒ/ƒ>0.6, where Bf is the back focus of the whole lens system, and f is the focal length of the whole lens system.

Abstract: A compact zoom lens having a high magnification with a zoom ratio of about 4 suitable for a lens shutter camera comprises, successively from the object side, a positive first lens group G1, a stop 2, a positive second lens group G2, and a negative third lens group G3. The second lens group G2 comprises, successively from the object side, a negative meniscus lens L4 having a concave surface directed onto the object side, a positive biconvex lens L5, and a positive meniscus lens L6 having an aspheric surface directed onto the imaging side and a concave surface directed onto the object side. The third lens group G3 comprises, successively from the object side, a negative meniscus lens L7 whose both surfaces are made aspheric, and a negative meniscus lens L8 having a concave surface directed onto the object side.

Abstract: When a variable powers witch of an electroscope is operated, a motor is driven to move a movable lens, and an optically enlarged image can be obtained. Furthermore, the optical image is electrically enlarged by an electronically variable power circuit. When the optically variable power is switched into the electronically variable power and vice versa, the operation of the variable power switch can be temporarily nullified to stop the variable power operation, and the switch is operated again to resume the operation. Thus, an operator can recognize the switch between the optically variable power and the electronically variable power. Furthermore, a time lag for a predetermined time can be set to switch between the optically variable power and the electronically variable power.

Abstract: It is an object of the invention to provide a structure of an internal thread portion for preventing looseness which structure allows a reduction in the torque required for the threaded engagement with an external-thread member and prevents a seizure. An exit end portion of a self-locking nut is taperingly contracted over the entire circumference thereof so as to form a contracted internal thread portion having a conical section. In addition, ridges of the contracted internal thread portion are provided with corrugation continuing circumferentially. The diameter of an inscribed circle which links the extremities of projections in the corrugation is smaller than the minor diameter of the external-thread member which is to be engaged threadedly with the internal thread portion.

Abstract: An f&thgr; lens comprises, successively from the luminous flux entrance side, a first lens made of a negative lens having a flat surface on one side, a positive second lens having a surface with a stronger curvature directed onto the image side, and a third lens made of a negative meniscus lens cemented to the second lens; and satisfies the following conditional expressions (1) to (3): −2.2<f1/f<−1.7  (1) 0.35<f2/f  (2) 2.21<N3+0.0176&ngr;3<2.27  (3) where f is the composite focal length of the whole lens system, f1 is the focal length of first lens, f2 is the focal length of second lens, N3 is the refractive index of third lens at d-line, and &ngr;3 is the Abbe number of third lens at d-line.

Abstract: An endoscope in which the advantage of a pinch valve is used, and the flow rate of fluid can be regulated variably. In an electromagnetic valve unit for carrying out the opening/closing control of pipes in the endoscope, a pinch valve is disposed in a water feed pipe, and a diaphragm valve is disposed in an air feed pipe. Also, for ease of draining work, an air feed pipe is connected to the water feed pipe, an auxiliary valve consisting of a diaphragm valve is disposed, and a check valve is installed. Further, for example, three control pipes with different diameters and three electromagnetic valves for opening/closing these control pipes are provided in each pipe. By carrying out the opening/closing control of these electromagnetic valves by using an operation switch, the flow rate in each pipe in the endoscope is regulated variably.

Abstract: A gaming machine displays a plurality of rows of symbols in moving and stopped states at an image display section formed in a front panel. If big winning symbols to be displayed in a stopped state are not attained as the result of determination (S4), then random number sampling for deciding whether or not to execute an image action is carried out (S6). According to the result of this sampling, whether or not to execute the image action is determined (S7). If it is determined to execute the image action, then an operation for randomly blinking tricolor-emitting LEDs is carried out at step 8 (S8). The LED display when executing the image action may be at a low luminance, as long as a player can guess, by seeing the blinking of tricolor-emitting LEDs, that a certain phenomenon relating to big winning might be occurring. The blinking pattern of the tricolor-emitting LEDs is constituted by randomly repeating their color changes.

Abstract: In an objective optical system of a stereoscopic endoscope, a pair of positive lenses are disposed downstream a pair of negative lenses for the right and left eyes at the leading end of the scope so as to respectively correspond thereto, whereby aberrations generated by the pair of negative lenses are corrected favorably. Successively from the object side, a negative lens pair 1, a positive lens pair 2, and a positive lens group 3 are disposed, whereby an incident luminous flux from the object side is caused to form an image on an imaging surface 6 of a CCD. The image-surface-side planar surfaces of the lenses L2 in the second lens pair 2 are respectively formed with stops 5 which are attached thereto or deposited thereon.

Abstract: In an image stabilizing apparatus in which an actuator for a pivoting gimbal suspension is controlled by a feedback loop, the gain of feedback loop based on the angular position is enhanced when the angular velocity is at a first set value or higher until the angular velocity becomes a second set value or lower, whereby a panning mode is automatically attained when a pan/tilt operation is carried out. Also the gain of feedback loop based on the angular position is enhanced when the angular velocity is enhanced until a lapse of a predetermined time after starting the pivoting control of the gimbal suspension, whereby the behavior of gimbal suspension is stabilized.

Abstract: The motion data preparation system provides a motion data preparation system which can acquire stable motion data by detecting color markers without being affected by the surrounding brightness, and which is enabled to execute high-speed, accurate processing by reducing the amount of information on color image data. Color representations of about 16770 thousands of colors for a 24-bit input image are integrated and divided for each color camera, and outputted as 256 kinds of color group signals by look-up table memory circuits 125, 126. Thus, the amount of information is consolidated to about 1/60000, allowing a simple, fast calculation to be realized. Further, the color representation is, separated into luminance (Y) and chroma, for example, red color difference (R-Y) and blue color difference (B-Y), and the chromatic component is corrected by luminance. As a result, errors due to effects of variations in illumination conditions and the like can be reduced.

Abstract: In an image stabilizing apparatus in which inner and outer gimbals are pivoted about two pivotal axes so as to fix an erect prism with respect to an inertial system, a torsion coil spring 240 is disposed to provide one-side stressing between the inner and outer gimbals 7, 107, so as to pivotally stress the inner gimbal 7 with respect to the outer gimbal 107 in one direction. When image stabilizing control is started, the elastic force of the torsion coil spring 240 instantly changes the angular position of the inner gimbal 7, so that a capacitor is charged earlier, thereby enhancing the response in PWM control.

Abstract: Respective image information data of three colors for forming a color image and a monochrome image information data are obtained from output values of at least three imaging element lines and a computed value based on these output values, whereby the readout speed for monochrome images is made as fast as that in a dedicated apparatus for reading out monochrome images, while using only the imaging element lines used for reading out color images. Three CCD lines 4A, 4B, and 4C are constituted by a (B-reading) CCD line 4A for reading out blue wavelength region, a (monochrome-reading) CCD line 4B for reading out the whole visible wavelength region, and a (R-reading) CCD line 4C for reading out red wavelength region, which yield blue, monochrome, and red outputs, respectively. The arithmetic unit 5 yields a green output.

Abstract: It is an object of the invention to provide a structure of an internal thread portion for preventing looseness which structure allows a reduction in the torque required for the threaded engagement with an external-thread member and prevents a seizure. An exit end portion of a self-locking nut is taperingly contracted over the entire circumference thereof so as to form a contracted internal thread portion having a conical section. In addition, ridges of the contracted internal thread portion are provided with corrugation continuing circumferentially. The diameter of an inscribed circle which links the extremities of projections in the corrugation is smaller then the minor diameter of the external-thread member which is to be engaged threadedly with the internal thread portion.

Abstract: To provide a complex which is excellent in transparency and protective ability of UVB region by containing titanium oxide in a specific silica carrier and a cosmetic preparation which has natural finishing i.e., excellent in transparency by the complex and is excellent in protective ability of UVB region, a titanium-silica complex in accordance with the present invention comprises a silica carrier and titanium oxide, wherein said silica carrier is mainly composed of silicon oxide and wherein titanium oxide is contained in said silica carrier.

Abstract: An objective lens for endoscope comprises, successively from an object side, a first lens group having a negative refracting power, a second lens group having a positive refracting power, a third lens group having a negative refracting power, and a fourth lens group having a positive refracting power; wherein the third lens group and one of the second and fourth lens groups are movable along an optical axis. The objective lens further satisfies the following conditional expressions: 2.0<&bgr;1T/&bgr;1W<10.0 1.2<fT/fw where &bgr;1T is the magnification of the first lens group at the telephoto end; &bgr;1W is the magnification of the first lens group at the wide end; fT is the focal length of the whole lens at the telephoto end; and fW is the focal length of the whole lens at the wide end.

Abstract: A transparent solid detergent includes; 3.5 wt % or above of at least one fatty acid salt selected from the group consisting of compounds expressed by the following general formulas (I)-(III); R—COO−H2N+(CH3)—CH2-CH2-SO3−X+  (I) R—COO−H2 N+—C2—CH2—SO3−X+  (II) R—COO−H2 N+—CH2—CH2—SO2−X+  (III) (wherein the formulas R is a saturated or unsaturated hydrocarbon group with carbon number 7˜23, and X is an alkali metal or organic alkali) sodium salt of fatty acid and/or potassium salt of fatty acid; humectant; and water.

Abstract: The process for the production of a laminated electronic part containing a major component as represented by general formula: X(MgaZn(1−a))xSiOx+2—YAl2O3—ZSrTiO3 (where symbol a is defined by: 0.1≦a≦0.8; and symbol x is defined by: ≦x≦1.5); and an additive component comprised of a compound containing one or more elements selected from Nb, Ta and W; wherein a mole percent ratio of magnesium zinc silicate, (MgaZn(1−a))xSiOx+2, (X), to alumina, Al2O3, (Y), and strontium titanate, SrTiO3, (Z), each of which constitutes said major component, is set to be located in a region enclosed by a polygon having apexes at points A, B, C and D, as defined below, in a three-component composition map: A (94.9, 0.1, 5.0) B (85.0, 10.0, 5.0) C (65.0, 10.0, 25.0) D (65.0, 0.1, 34.9); and the additive component is contained at a rate of 0.01 to 0.