摘要:
A projection optical system that performs enlargement projection of an image on a display device surface formed of a plurality of pixels onto a screen surface, in which pixel shift by less than a pixel pitch is performed on the screen surface in a vertical direction, a horizontal direction, an oblique direction, or a vertical and horizontal directions, and in which conditional formulae (1) and (2) below are fulfilled over the entire image range: (1)|ΔΔRG|≦0.5 d and (2)|ΔBG|≦0.5 d, where d represents the amount of pixel shift (>0), ΔRG represents lateral chromatic aberration in the direction of pixel shift of colored light R having a wavelength of 640 nm with respect to colored light G having a wavelength of 546 nm, and ΔBG represents lateral chromatic aberration in the direction of pixel shift of colored light B having a wavelength of 450 nm with respect to the colored light G having a wavelength of 546 nm.
摘要:
An object lens unit for an optical pickup comprising: a first optical element positioned facing an optical information recording medium; a second optical element positioned on a light source side of the first optical element; and a frame which has a first reference surface in contact with the first optical element to position the first optical element in an optical axis direction and a second reference surface in contact with the second optical element to position the second optical element in the optical axis direction so that the first optical element and the second optical element are fixed to be integrated with the frame, wherein the first optical element, the second optical element and the frame are attached, as a single optical component, to another member.
摘要:
An objective lens for use in an optical pickup apparatus for conducting recording and/or reproducing information for an optical information recording medium, has a lens section shaped in an approximate circle and including a flange section; and a projecting section integrally provided to the lens section. The objective lens satisfies the following conditional formulas: 0.5≦A≦2.0, 0.3A≦B≦1.7A where A is a diameter (mm) of the lens section when the lens section is viewed from an direction of an optical axis, and B is a width (mm) of the projecting section when the connecting section is viewed from the direction of the optical axis.
摘要翻译:用于对光学信息记录介质进行记录和/或再现信息的光学拾取装置中的物镜具有近似圆形且包括凸缘部分的透镜部分; 以及与透镜部一体地设置的突出部。 物镜满足以下条件式:<?in-line-formula description =“In-line formula”end =“lead”?> 0.5 <= A <= 2.0,0.3A <= B <= 1.7A < 在线公式描述=“在线公式”end =“tail”?>其中A是当从光轴的方向观察透镜部分时透镜部的直径(mm),B是 当从光轴的方向观察连接部时,突出部的宽度(mm)。
摘要:
An image pickup apparatus comprises a substrate; an image pickup element to convert a converged light flux to electronic signals; an image-taking optical element positioned so as to converge a light flux from an object onto the image pickup element; a light shielding member to house the image pickup element and the image-taking optical element; a controlling device to control an output of the electronic signals and controlling the image pickup element; and a refracting power-variable optical element.
摘要:
An optical pickup apparatus comprising: a first light source emitting first light flux having wavelength λ1 (380 nm≦λ1≦450 nm); a second light source emitting second light flux having wavelength λ2 (600 nm≦λ2≦700 nm); a third light source emitting third light flux having wavelength λ3 (750 nm≦λ3≦800 nm); a first divergent angle-converting element through which the first light flux passes; a second divergent angle-converting element through which the second light flux and the third light flux pass; and an objective optical element through which the first, second, and third light fluxes pass. Optical magnification m2 of the second divergent angle-converting element for the second light flux and optical magnification m3 of the second divergent angle-converting element for the third light flux are different from each other.
摘要:
The present invention relates to an optical element for an optical pickup device, wherein the optical element is produced by molding a resin material, in which inorganic particles having a diameter of not more than 30 nm are dispersed in a plastic resin, an optical pickup device using the optical element, and a producing method of the optical element.
摘要:
A producing method for an image pickup device in which an image pickup optical unit that picks up an image of an object is provided on a base board, wherein there are provided a first process for mounting an image sensor and other electric parts on the base board and a second process for assembling the image pickup optical unit on the base board from one direction, and the first process and the second process are independent from each other.