摘要:
A recyclable single-use camera in which a front casing portion is separable from a main body portion to replace a taking lens during recycling of said camera, is characterized in that the taking lens has a front lens element and a rear lens element. The rear lens element is secured to the main body portion in order to prevent removal of the rear lens element. The front casing portion holds the front lens element in optical alignment with the rear lens element, and permits removal of the front lens element to allow it to be replaced whenever the front casing portion is separated from the main body portion during recycling of the camera.
摘要:
An apochromatic imaging system has an object-side lens group having at least an object-side lens element with positive refractive power and formed from a flint glass material with deviation of relative dispersion −0.013
摘要:
A pair of optical lenses comprising a first biconvex optical lens having two equivalent aspheric optical surfaces and a second biconvex optical lens having two equivalent aspheric optical surfaces positioned spaced apart from the first biconvex optical lens, wherein the first optical lens is adapted to shape the light emitted from a source optical fiber into one of a converging, diverging, and collimated beam and the second optical lens is adapted to focus the beam into a receiving optical fiber such that the light emitted from the source optical fiber is coupled into the receiving optical fiber.
摘要:
According to the present invention the magnifier lens comprises two lens elements. More specifically, from a front, eye side to a rear, object side there is a front, positive lens element, and a rear, meniscus lens element. The front, positive power lens element has at least one aspheric surface and an Abbe V-number V.sub.1. The rear, meniscus lens element has an Abbe V-number V.sub.2. The front and the rear lens elements, in combination, contain at least one diffractive surface. The rear, meniscus lens element has front and rear refractive surfaces, both of which are concave toward the object side. The rear refractive surface is positionable within 5 mm of an associated object to be viewed from the eye side. This rear surface is an aspheric surface of negative refractive power. The Abbe V-numbers satisfy the following inequalities 50.4 25.
摘要:
A lens for use in optical disc players comprising a single positive meniscus element having the following parameters:______________________________________ SURFACE RADIUS THICKNESS ______________________________________ 1 Aspheric 2.269 mm 2 47.7003 mm ______________________________________ The aspheric surface 1 is defined in accordance with the following relationship: ##EQU1## wherein coefficient C=0.2794401D=-0.1359364.times.10.sup.-2E=-0.6606383.times.10.sup.-4F=-0.1056564.times.10.sup.-4and wherein X is the sag of the aspheric surface from a plane reference surface at a radial distance y from the axis of the lens. The refractive index, N.sub.800, of the element is 1.82198 and the Abbe V number is 23.8.
摘要翻译:一种用于光盘播放器的透镜,包括具有以下参数的单个正弯月形元件: - 表面半径厚度-1非球面2.269mm -2 47.7003mm - 非球面1根据以下关系定义:其中 系数C = 0.2794401 D = -0.1359364×10-2 E = -0.6606383×10-4 F = -0.1056564×10-4,并且其中X是来自平面参考表面的距离该轴线的径向距离y处的非球面的垂度 镜片。 元素的折射率N800为1.82198,AbbéV数为23.8。
摘要:
A dual focal length optical system includes a first optical system and a second optical system. The first optical system is positioned along an optical axis and includes an optical structure having an object side surface and an image side surface. The object side surface and the image side surface include a refractive surface portion and a reflective surface portion. The first optical system has a focal length. The second optical system is positioned on the same optical axis and has a focal length. The focal length of the first optical system is longer than the focal length of the second optical system.
摘要:
A thin lens consists of a first optical element which comprises a first refracting surface, wherein incoming light passes through the first refracting surface on a first optical axis. A reflecting surface changes a direction of the incoming light from the first optical axis to a second optical axis. Incoming light on the second optical axis passes through a second refracting surface. A second optical element comprises a first refracting surface, wherein incoming light passes through the first refracting surface on the second optical axis. A reflecting surface changes a direction of the incoming light from the second optical axis to a third optical axis. Incoming light on the third optical axis passes through a second refracting surface. The third optical axis is approximately parallel to, and in opposite direction from, the first optical axis.
摘要:
The invention discloses an image acquisition system with a modified image sensor that enables simultaneous capture of at least two images with different perspectives The pixels are split into two or more subsets of pixels under a series of cylindrical microlenses or linear light guides. The cylindrical microlenses or linear light guides limit the radiation to impinge upon first and second subsets of pixels under each microlens or light guide to come from only one half or the other half of the imaging lens so that stereo image sets are produced.
摘要:
A dual focal length optical system includes a first optical system and a second optical system. The first optical system is positioned along an optical path and includes an optical structure having an object side surface and an image side surface. The first optical system also includes a first surface of an intermediate reflective element located between the object side surface and the image side surface of the optical structure as viewed along the optical path. The first optical system has a first focal length. The second optical system shares a portion of the same optical path and includes a second surface of the same intermediate reflective element as that of the first optical system. The second optical system has a second focal length. The first focal length of the first optical system is longer than the second focal length of the second optical system.
摘要:
A thin lens consists of a first optical element which comprises a first refracting surface, wherein incoming light passes through the first refracting surface on a first optical axis. A reflecting surface changes a direction of the incoming light from the first optical axis to a second optical axis. Incoming light on the second optical axis passes through a second refracting surface. A second optical element comprises a first refracting surface, wherein incoming light passes through the first refracting surface on the second optical axis. A reflecting surface changes a direction of the incoming light from the second optical axis to a third optical axis. Incoming light on the third optical axis passes through a second refracting surface. The third optical axis is approximately parallel to, and in opposite direction from, the first optical axis.