PURPOSE:To obtain a long back-focal distance photographing lens of high optical performance well corrected for various aberrations by specifying the form and constitution of lenses of the front group and rear group. CONSTITUTION:The lens system is basically constituted of a front group I consisting ...
30~150mm Lens 12km Long Distance CCTV Surveillance Thermal PTZ Camera, Find Details and Price about Thermal Night Vision Military Thermal Camera from 30~150mm Lens 12km Long Distance CCTV Surveillance Thermal PTZ Camera - Shandong Sheenrun Optics & Elect
镜头系数（Lensfactor）镜头系数（Lens factor）canon zoom lens: 佳能变焦镜头 ef - s代表小ccd数码单反专用镜头 (焦距转换系数为1.6), efs 镜头不能用在传统胶卷单反以及全幅ccd数码单反上.18-55mm 代表变焦范围18 - 55毫米 (乘以焦距转换系数1.6后相当于135传统胶卷单反焦距28 - 88mm)1:3.5-5.6: 此...
An attachment lens for attachment to the object side of a main camera lens in order to enable the taking of short distance shots is disclosed. The attachment lens consists of three lens elements of positive, negative, and positive refractive power, in order from the object side. The first le...
5-50mm Varifocal Lens:A versatile 5-50mm varifocal lens offers a wide field of view, perfect for long-distance monitoring. Automatic Lens Type:The automatic lens type simplifies setup, providing a hassle-free installation process. Customer Reviews ...
Projector distance m Projector brightness % Stack projectors # Horizontal shift % Vertical shift % Available lenses forFS40-WU Due to lens tolerances the results of calculated values may be different from measured values. These difference may vary +/- 5%. ...
* The detection distance is related to the object and environment etc. Please contact with us for further information. Company information Q1: Are you manufacturer or not?A1: Yes, we are MANUFACTURER which have devoted developing and manufacturing thermal imaging camera an...
简介 NaviLens is a high-density artificial markers system for long distance reading. The tags generated by this system are designed in order to be read from a long distance, without the need of focussing and even in motion. This makes them useful for blind and low vision people. All you ...
Applicable to watch the game, concerts, tourism, observe animal lovers, news reporter long-distance shooting etc. Private detective taking pictures forensics, geological exploration, forestry management, railway port scheduling and etc. The product includes:...
Focal length = the distance from the subject to the lens + the distance from the lens to the camera sensor You also need to understand if your lens is concave or convex to determine focal length. A convex lens (also known as a converging lens) and a concave lens (also called a divergi...