Abstract:
PROBLEM TO BE SOLVED: To permit the formation of a latent image of a fine pattern on a resist layer by irradiating the resist layer formed on a board with laser beam applying high frequency superpose through an auto-focus mechanism and detecting this reflecting beam. SOLUTION: The laser beam emitted from a beam source 2 irradiates the resist layer 51 formed on the glass board 50 to form the latent image of the prescribed pattern on the resist layer 51. The high frequency convoluted laser beam emitted from the beam source 32 auto-focus, penetrates a correcting lens 33 to correct the chromatic aberration and further, penetrates a polarized- beam splitter 34 and a 1/4 wave length board 35 and directed to a reflecting mirror 36. The high frequency convoluted laser beam passed through the splitter 34 and the 1/4 wave length board 35, is made incident on objective lens 22 as p-polarized beam and the reflected beam of the high frequency superposed laser beam which irradiates the resist layer 51 through the objective lens 22, is used as s-polarized beam and the splippage amount of the focus is efficiently detected with a beam detector 37.
Abstract:
PROBLEM TO BE SOLVED: To provide an optical detector including a simple optical system, capable of including versatility to a plurality of kinds of microchips. SOLUTION: This optical detector includes: a microchip 5 wherein a plurality of domains 51 into which a detection object material is introduced are formed, and optical lenses 52 for condensing light with which the detection object material is irradiated and condensing light emitted from the detection object material are disposed respectively on prescribed spots of each domain 51; a light irradiation system for irradiating collectively all the optical lenses 52 with light from a light source 1; and a photodetection system for detecting respectively individually and collectively each light emitted from the detection object material, and condensed by each optical lens 52. COPYRIGHT: (C)2011,JPO&INPIT
Abstract:
PROBLEM TO BE SOLVED: To provide a technology for efficiently detecting light from a small quantity of a sample. SOLUTION: The light detection chip 1 is provided, and includes: a plurality of detection areas 11 for detecting a fluorescence F emitted from the sample by irradiating the sample with light; and a light reflection means 12 disposed at a position at which it faces the direction D for detecting the fluorescence F through the detection areas 11. The light detection chip 1 includes the light reflection means 12 disposed at the position at which it faces the direction D for detecting the fluorescence F through the detection areas 11, thereby the fluorescence F among the fluorescence F emitted from the sample is scattered in the direction opposite to the direction for detecting the fluorescence F, and reflected and guided in the fluorescence detection direction. The light can efficiently be detected from the small quantity of the sample. The assay accuracy and the analysis accuracy can be improved. COPYRIGHT: (C)2011,JPO&INPIT
Abstract:
PROBLEM TO BE SOLVED: To provide a biometric authentication device capable of achieving thinning, while maintaining high accuracy in the authentication. SOLUTION: The biometric authentication device 1 includes a light source 10, a detection section 11, a microlens array 12, a shade section 13, an imaging element 14, an image processing section 15, a pattern-holding section 16, an authentication section 17, a light source drive section 181, an imaging element drive section 182, and control section 19. A micro lens array 12 is equipped with a function for making the light selectively transmit by adding coloring material. The light irradiated on a biological body 2 from the light source 10 is condensed and selectively transmitted by the microlens array 12 and is made incident on the imaging element 14. As a result of this, since the light of unwanted wavelength band is eliminated , making the biometric authentication device 1 thinner can be realized, while maintaining the accuracy in the authentication for the biological body. COPYRIGHT: (C)2011,JPO&INPIT
Abstract:
PROBLEM TO BE SOLVED: To provide an optical pickup having a phase-modulating liquid crystal element which can perform a desired aberration correction even if the thickness of a liquid crystal layer is different from a designed thickness due to a change of environmental temperature, an error in production of liquid crystal elements, or the like. SOLUTION: Signal voltages VS1, VS2 and VS3 which drive a phase-modulating device mounted on an optical pickup are generated as follows. Firstly, a VSamp is generated in accordance with an aberration correction value, and a first signal voltage VS1 and a second signal voltage VS2 are generated from a reference driving signal VS0 and the VSamp. Then, a VSoffset is generated so that it may be equal to a third signal voltage VS3 when an equation ¾VS2¾=¾VS1¾ is established, and the third signal voltage VS3 is generated from the VS1, k (a constant), the VSamp and the VSoffset. COPYRIGHT: (C)2006,JPO&NCIPI
Abstract:
PROBLEM TO BE SOLVED: To precisely perform the positioning of a 2nd lens to a 1st lens of two lenses of a group even if contours of the 1st and 2nd lenses have errors. SOLUTION: The tilt detecting device is provided with two lenses of a group composed of the 1st lens 22 and the 2nd lens with a counter face 27 faced to an optical recording medium, a reference plane on which the two lenses of a group 21 are mounted, and a condenser lens 5 for irradiating the counter face 27 of the 2nd lens 23 with laser light emitted from a laser light source 2 in a focused state, and radiates the focused laser light toward the counter face 27 of the 2nd lens 23, and detects, in the neighborhood of the focal point of the light reflected by this counter face 27, a tilt of the above 2nd lens to the 1st lens by detecting a position on a plane perpendicular to the optical axis of the reflected light. COPYRIGHT: (C)2005,JPO&NCIPI
Abstract:
PROBLEM TO BE SOLVED: To provide a method for detecting a tilt of an optical disk, an optical pickup device and an optical disk device capable of detecting a radial tilt of a highly precise disk with simple constitution. SOLUTION: In the method for detecting the tilt of the optical disk, relative to reflected light from the optical disk 7, a PP signal is generated by a subtracting arithmetic operation of a detecting signal from respective detectors A-D in the track traversing direction of a light spot, a moving quantity of an objective lens is detected by a sensor, a DPD signal is generated by a phase comparison of a detecting signal from respective detectors A-D in the direction orthogonal to the track traversing direction of the light spot, the tilt angle of the optical disk is detected by subtracting the PP signal and the sensor signal from the DPD signal, and whereby the radial tilt of the optical disk is properly controlled.
Abstract:
PROBLEM TO BE SOLVED: To execute accurate focus control for an optical storage medium of the land groove recording system. SOLUTION: The laser beam emitted from a laser oscillator 13 is branched with a diffraction grating 15 into the main beam and sub-beam. These laser beams cause the returning beam reflected from the optical disk 2 to enter a photodetector 20 via a cylindrical lens 19. A focus error signal is generated from the returning beam of the main beam and sub-beam incident to the photodetector 20. Based on the focus point difference signal, the focus control is performed for the main beam to conduct recording and reproducing operation.
Abstract:
PROBLEM TO BE SOLVED: To detect the tilt of an optical disk by generating a first signal by addition and subtraction of prescribed signals detected at each bi-sected light receiving section and a second signal by phase comparison of the prescribed detected signals, and obtaining the difference arithmetic value of these two signals. SOLUTION: A light spot is divided into a main spot 27 and both side spots 22, 30 in the direction crossing a prescribed track and its preceding and succeeding tracks. A DPD signal being a first signal is generated by subtraction or addition of detected signals from each bi-sected light receiving sections A-H in these track crossing direction as for light reflected from an optical disk 7. Also, a DPD signal being a second signal is generated by phase comparison of detected signals of each bi-sected light receiving section A-D orthogonally crossing the track transversing direction of the main spot 27. The difference arithmetic value between the first signal and the second signal is obtained, and the tilt angle of the optical disk is detected based on the value.
Abstract:
PROBLEM TO BE SOLVED: To obtain satisfactory reproduced signals while making crosstalk small at the time of reproducing information signals from a magneto-optical recording medium on both of whose land and groove information signals are recorded and to miniaturize a device while enhancing the degree of freedom of a constitution. SOLUTION: An optical 10 reproducing information signals from a magneto- optical recording mediumon on both of whose land and groove information signals are recorded is provided with a light source 11 irradiating the magneto- optical recording medium with light beams, an objective lens 14 converging the light beams from the light source 11 on the recording medium and a phase difference changing means 15 which is arranged between a beam splitter 13 separating the light beams from the light source 11 and return lights from the recording medium and the objective lens 14 and the optical head 10 makes amounts of changes of phase differences by the phase difference changing means 15 to be different amounts in the return light from the land of the recording medium and in the return light from the groove of the medium.