This section provides an overview for rod lenses as well as their applications and principles. Also, please take a look at the list of 11 rod lens manufacturers and their company rankings. Here are the top-ranked rod lens companies as of November, 2023: 1.Ecoptic, 2.DYMAX, 3.FindLight.
A rod lens is a lens that is cylindrical in shape and whose outer surface is polished to a high degree of precision. The cross section is basically a cut surface, but some of them have a polished finish.
As an optical function, it can convert light irradiated on the periphery into a line and diffuse it in a fan shape. They are often used to collect light for devices that require light on a line, such as line sensors.
The wavelength and focal length of light that can be handled vary depending on the lens material.
This section describes the uses of rod lenses.
Rod lenses have the effect of diffusing light along a line, and are used as lenses for architectural markers and non-contact 3D shape measuring instruments. Rod lenses are also used in manufacturing lines in factories, where they are placed just in front of line sensors to let in light to make it easier for the sensors to respond.
Lenses have the effect of focusing or diffusing light.
For example, light incident on a convex lens is refracted by the lens and redirected toward the thicker center. Since the thickness of a convex lens increases toward the center, light passing through the lens converges at a single point. This point is called the focal point, and the distance from the center of the lens to the focal point is called the focal length.
Lenses come in a variety of shapes, and each shape has a different effect on light. Rod lenses are classified as a special shape among lenses. Since only one directional component of the incident light acts as a lens, the light after passing through becomes on a slit line and spreads out in a fan shape. Using this characteristic, it is possible to focus laser light into a thin beam or form a sheet of light.
Cylinder lenses (cylindrical lenses) are classified as the same special shape lenses as rod lenses. Basically, the action on light is the same as that of rod lenses, but the cylinder lens has a cylindrical shape.
*Including some distributors, etc.
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Dymax Corporation was founded in 1980 and is headquartered in Torrington, Connecticut. The company develops and manufactures rapid and light-curable materials and light-curing systems for the medical, consumer electronics, wearables, aerospace, and automotive electronics industries. The company’s product segments include Light Curable Materials, Light-Curing Equipment, and Dispensing Equipment. Light Curable Materials include masking, gasketing, and activators. Light-Curing Equipment includes conveyor systems, flood-curing systems, and radiometers. Dispensing Equipment includes dispense valves, syringe dispensers, and material reservoirs. The company also offers application engineering, equipment, and system integration services.
FindLight, located in Berkeley, California, United States, is an online marketplace for the photonics industry, connecting buyers and sellers of photonics products on a single platform, was founded in 2013. The company's platform is organized into a hierarchy of product categories, including lasers, optics, optomechanics, light detection systems, and other photonics products. They aim to simplify the shopping process in the photonics industry by seamlessly connecting sellers and buyers on one easy-to-use platform. They were founded after an extensive customer discovery process conducted in the frameworks of NSF I-Corp Entrepreneurship Program at UC Berkeley.
CHUO PRECISION INDUSTRIAL CO., LTD. (Chuo Seiki Kabushiki Kaisha), founded in 1955, is a Japanese manufacturer and supplier headquartered in Chiyoda-ku, Tokyo, specializing in precise positioning units as well as optical machines and equipment. The company’s portfolio includes automatic and motorized stages and actuators, manual mechanical stages, stage accessories, and controllers. Automatic stage applications include sample table of laser repair and mapping systems, whereas manual stage applications encompass camera position adjustment for glass substrate and/or film inspection systems and prober position adjustment. Further offerings include microscopes and tool scopes, automation products for microscopes, as well as optical accessories, components, and instruments.
Mitsubishi Chemical Corporation was founded in 1933 and has a head office in Tokyo, Japan. Mitsubishi Chemical Corporation provides products including chemicals, industrial gases, and health care products to customers globally. Mitsubishi Chemical Group’s performance products division manufactures and distributes. functional food materials, electronic and electrical components, specialty chemicals, and other products. Mitsubishi Chemical health care products include pharmaceuticals, drug discovery solutions, diagnostic reagents, and instruments for medical use. Mitsubishi Chemical Corporation also provides other services such as engineering, information systems, logistics, and consulting.
U-Optics, a certified ISO 9001:2015 company. established in 2004 and is headquartered in Wuhan, China, is a manufacturer, and researcher of optical components and systems. Its product range includes photonic components, modules, and systems among many others. The company heads the development of cutting-edge photonic technologies, and its products are used in a wide range of applications, including telecommunications, medical imaging, and industrial automation. U-Optics has over 200 employees and operates in more than 20 countries across the globe. The company is devoted to serving customers from small quantity prototypes to mass production of precision optical components.
UNI Optics Co., Ltd, established in 2008 and located in Fuzhou, China, is a manufacturer and supplier specializing in optical components and assemblies. The company’s product portfolio includes custom-made optical components such as lenses, prisms, windows, and filters, along with various coating designs. These products find applications in automation, metrology, life sciences, lasers, semiconductor, military, and medical equipment. UNI Optics employs an ISO9001:2015 quality management system and serves clients globally including North America, the Middle East and Africa, South America and Asia.
Ecoptic, founded in Changchun, Jilin in 2000 is a manufacturer of precision optical components, such as spherical mirrors, aspheric mirrors, and filters. The company's product portfolio includes Optical Cylindrical Lenses, Optical Dome, Optical Mirrors, Optical Prism, and Optical Spherical Lenses. The company serves markets including Medical and Healthcare, Aerospace and Defense, Consumer Goods, Industrial Manufacturing and Construction and Building. The company provides services such as Product Selection Guidance, Engineering Support, New Product Design and Development and Custom Manufacturing.
Shanghai Optics, established in China, is a custom manufacturer of optical components and a custom designer and engineering provider of optical components, lenses, and assemblies. The company produces its own range of products that include stock microscope objectives, fixed focal length lenses, stock IR lenses, and megapixel lenses used in applications such as scientific and laboratory equipment, smartphones, cameras, and other requirements from OEM customers around the world. The company's services include full production at high and lower volumes, prototyping, free quotes, and custom product design consultations.
SIGMAKOKI Co., Ltd. (SK) is a Japanese manufacturer and distributor of optical technology products founded in 1977. Headquartered in Tokyo, the company offers a wide range of optical equipment including optics and optical coatings, laser and optical application system components, objective lenses, and biomedical products such as core units for microscopy. It primarily serves research institutes, as well as clients in the aerospace, semiconductor, and medical device manufacturing sectors. SK products have various applications including in laser processing, R&D, spectroscopic measurement, and optical communication.
VY Optoelectronics Co., Ltd. is a manufacturer of different kinds of optical precision element and photographic lens &accessory. The company is located in Jilin, China and is founded in The company product portfolio includes laser optics, imaging lenses, optical component, lasers. The company integrate lens design, production and sales. Application of the company’s items are very extensive and involves in military, aerospace, industry, scientific, medical instrument, photoelectric device, optical communication and mechanical equipment and so on.
Knight Optical is a company that manufactures optical components based in the UK. The company offers services such as design, consultancy, custom packaging, testing, quality assurance, and others. They serve a wide number of industries including scientific, defense, medical, pharmaceutical, laser engineering and manufacturing. They also provide a wide range of coating capabilities for optical components throughout the ultraviolet (UV), visible and infrared (IR) spectra.They are ISO9001:2015 and ISO14001:2015 accredited and are providing quality products and services.
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