Abstract:
PURPOSE:To simplify lens position adjustment of a moving group in the case of no execution of an image blur correction by improving the optical performance at the time of correcting the image blur and the controllability relating to the moving group and dividedly designing an image blur correcting system and an imaging system. CONSTITUTION:The first group A1 and the variable power group A2 in succession thereto are arranged in this order successively from an object side in the variable power optical system A. The first group A1 is composed of a front group A1F of an afocal system and a rear group A1R having a positive refracting power. The front group A1F is composed of the stationary group A1Fa and the moving group A1Fb movable backward orthogonally with the optical axis L-L. The image blur is corrected by moving the moving group A1Fb by a lens driving part LD according to the degree of the inclination of the variable power optical system A.
Abstract:
PROBLEM TO BE SOLVED: To provide a display device allowing a user to use the device more easily.SOLUTION: A display device comprises: a display unit for performing image display; a voice output unit; an information detection unit for detecting viewing environmental information and viewer information; and a control unit performing display control and voice control on the basis of both the viewing environmental information and the viewer information detected by the information detection unit, the display control controlling the brightness and chromaticity at the image display and the voice control controlling the voice output from the voice output unit.
Abstract:
PROBLEM TO BE SOLVED: To provide image data and a method for evaluating a device handling a moving video of extensive color gamut. SOLUTION: A chrominance exceeding the range of a chrominance represented by a brightness signal and a color difference signal specified by ITU-R BT. 601 or BT. 709 is expressed. Image data consisting of a brightness signal and a color difference signal conforming to xvYCC regulation specified in IEC 61966-2-4 is recorded as chart data for evaluation in a recording medium 111. Evaluation chart data recorded in the recording medium 111 is processed and an evaluation object 121 is evaluated based on the results of processing. COPYRIGHT: (C)2007,JPO&INPIT
Abstract:
PROBLEM TO BE SOLVED: To improve chromaticity of white light that illuminates a color liquid crystal display panel. SOLUTION: A wavelength selection filter 22 is provided that transmits the white light emitted from white LED and approximates the chromaticity of the white light to X=0.3 and Y=0.3 that illuminates the color display panel 10 depending on the white LED used in the light source 21, and the liquid crystal display panel 11 is illuminated by the light emitted via the wavelength selection filter 22. The wavelength selectivity of the wavelength selection filter 22 is controlled by adjusting the thickness of a high refractive index layer H and a low refractive index layer L. COPYRIGHT: (C)2005,JPO&NCIPI
Abstract:
PROBLEM TO BE SOLVED: To provide a backlight light source device for liquid crystal display to secure more faithful color reproducibility, its wavelength selection filter, a color liquid crystal display, and a filter configuration method, wherein a transmission type color liquid crystal display panel is illuminated from a rear surface side to display colors of a wide range and to secure high luminance. SOLUTION: The transmission type color liquid crystal display panel 10 is illuminated from the rear surface side by using a backlight light source device 20 provided with a wavelength selection filter 25 comprising an optical multilayered film formed by alternately laminating high refractive index layers comprising a high refractive index material and low refractive index layers comprising a low refractive index material having a refractive index lower than that of the high refractive index material and having a high transmission characteristic to light of a plurality of specified wavelength regions transmitted through a color filter 19 provided on the transmission type color liquid crystal display panel 10 and no high transmission characteristic to light of a visible wavelength region other than at least the specified wavelength regions and a white light source 21 and an auxiliary light source 22 illuminating the color liquid crystal display panel 10 from the rear surface side via the wavelength selection filter 25. COPYRIGHT: (C)2005,JPO&NCIPI
Abstract:
PROBLEM TO BE SOLVED: To enable a high-definition enlarged virtual image without luminance irregularity to be viewed within a range that it can be viewed by moving eyes, that means, by making eye tolerance large and with a wide viewing angle. SOLUTION: This video display device is constituted by being provided with display means (11L and 11R) at which videos are displayed, projection optical systems 12L, 12R, 13L and 13R enlarging the videos displayed at the display means and projecting them on transmission type screens 14L and 14R and enlargement optical systems 15L and 15R forming the enlarged virtual images of the videos projected on the screens 14L and 14R. Then, the screens 14L and 14R are constituted by spreading plural transparent very-small spheres(beads) 18 all over a transparent substrate 17. Thus, the viewing angle of the video can be widened and the luminance irregularity and light omission can be reduced.
Abstract:
PURPOSE:To provide a compact zoom lens having a large zoom ratio, capable of having a small F number, and with which a good aberration compensation is achieved. CONSTITUTION:A fixed first lens group 1 having a positive refraction force, a second lens group 2 as a variation having a negative refraction force, a fixed third lens group having a positive refraction force, and a fourth lens group 4 as a compensator having a positive refraction force and performing are provided in this order from the objective side, the second lens group 2 is composed of a negative meniscus lens 21, a biconcave lens 22, and a positive lens 23, the refraction ratio and Abbe number of the negative meniscus lens 21 to a line (d) are referred to as na and nua respectively, and the refraction ratio and Abbe number of the biconcave lens 22 to the line (d) are referred to as nb and nub respectively, where na>1.75, nua>40, nb 50 are satisfied.