China Shanghai Longway Special Glass Co., Ltd. company news

Q1: What is a magnifying glass, and how is it structured?A1: A magnifying glass is a simple optical device consisting of a convex lens (typically plano-convex) mounted in a frame with a handle. The convex lens converges light rays, creating a magnified virtual image of an object placed within its ... Read More

Q1: What is a plano-convex lens, and how is it structured?A1: A plano-convex lens is an optical lens with one flat (plano) surface and one outward-curving (convex) surface. The convex side has a positive focal length, enabling it to focus light rays or collimate diverging beams. Its asymmetric ... Read More

Schedule of Domestic and International Optical and Optoelectronic Industry Exhibitions in 2025 Asia Photonics Expo (APE 2025) - Time: February 26 - 28, 2025 - Venue: Marina Bay Sands Expo & Convention Centre, Singapore - Organizer: Organizing Committee of Asia Photonics Expo - Exhibition Introductio... Read More