Optical measurement techniques with telecentric lenses

ثبت نشده
چکیده

This course on optical 2d-measurement technique has been created during the development of the telecentric lenses from Schneider-Kreuznach. First of all we had the idea to explain to the "non optics expert" the differencies between normal lenses and telecentric optical systems by introducing the laws of perspective (Chapter 2). But in the course of writing it became very soon evident that we had to deal with more then only explaining the laws of telecentric perspective. This because of various reasons:

برای دانلود متن کامل این مقاله و بیش از 32 میلیون مقاله دیگر ابتدا ثبت نام کنید

ثبت نام

اگر عضو سایت هستید لطفا وارد حساب کاربری خود شوید

منابع مشابه

Telecentric Optics for Focus Analysis

Magnification variations due to changes in focus setting pose problems for vision techniques, such as, depth from focus and defocus. The magnification of a conventional lens can be made invariant to defocus by simply adding an aperture at an analytically derived location. The resulting optical configuration is called “telecentric.” It is shown that most commercially available lenses can be turn...

متن کامل

Telecentric Optics for Computational Vision

An optical approach to constant-magniication imaging is described. Magniication variations due to changes in focus setting pose problems for pertinent vision techniques, such as, depth from defocus. It is shown that magniication of a conventional lens can be made invariant to defocus by simply adding an aperture at an analytically derived location. The resulting optical connguration is called \...

متن کامل

Free space optical data links using cat's eye modulating retro-reflectors

Two kinds of systems will be described. The first is based on non-diffraction limited cat's eyes using telecentric lenses. These systems were used to implement a short-range optical link (3 meters) that was inserted into a standard 1553 protocol network. We will describe the optical design and the MQW photonic back-plane. We will also discuss a demonstration of a 4 node 1553 network using these...

متن کامل

کاربرد لنزهای داخل چشمی در جراحی کاتاراکت و عوامل تأثیرگذار بر دید بیمار

Introduction: With the growing and rapid development of refractive surgery, researches focus increasingly on improvement of visual quality after cataract surgery. Intraocular lenses (IOLs) were a successful effort in the field of cataract surgery. Despite significant advances in cataract surgery, several complications related to surgical technique and IOL design after surgery can cause vision c...

متن کامل

Fast Focus Mechanism Using a Pair of Convergent and Divergent Lenses Differentially for Three-dimensional Imaging

Telecentric optics with a fast focus mechanism at constant magnification was devised to achieve perfect perspective and parallel projections for a real-time system of three-dimensional close-up imaging and range measurement based on focus by differentially using a pair of convergent and divergent lenses. This was successfully used to keep the parallel and perspective projection systems in focus...

متن کامل

ذخیره در منابع من


  با ذخیره ی این منبع در منابع من، دسترسی به آن را برای استفاده های بعدی آسان تر کنید

برای دانلود متن کامل این مقاله و بیش از 32 میلیون مقاله دیگر ابتدا ثبت نام کنید

ثبت نام

اگر عضو سایت هستید لطفا وارد حساب کاربری خود شوید

عنوان ژورنال:

دوره   شماره 

صفحات  -

تاریخ انتشار 2005