Lens for Newton's Ring Set consisting of one flat glass & one plano-convex Lens of F.L. 200 cm. made from green glass & extra white glass (lenses only).
Newton's Ring Lens Set are also available without Metal rings in Diameter of 50mm & 60mm in white glass & green glass.
Diameter (mm) :
50 mm
60 mm
75 mm
Place of Origin: China Brand Name: OEM Model Number: TLS-232 Product name: Trial Lens Set TLS-232 Application: Optical Shops Material: plastic rim, aluminum case Sphere: 68 pairs Cylinder: 38 pairs Prism: 10 pieces Accessories: 10 pieces
Standard form lenses are mounted in moulded ABS rims having the power printed at two different places for easy identification. The rims are colour coded and you can either have the Cylindrical lenses with or without handles. Composition: Spheres 32 pairs each of Plus and Minus Cylinders 20 pairs each of Plus and Minus Prism 6 Pcs. Accs. 6 Pcs. Trial Set "PN" is supplied with the lenses fitted in wooden tray and flat top Wooden Carrying Case.
Accurate 24.0 mm diameter lenses of Meniscus or standard form with light weight aluminium rims of 38.0mm. All rims are engraved with power in two places for easy identity. Composition Spheres 32 pairs each of Plus and Minus Cylinders 19 pairs each of Plus and Minus Prism 10 Pcs. Accs. 7 Pcs. Beta 25H Meniscus is supplied with Meniscus corrected curve lenses, fitted in wooden tray. Beta 25H "R" is supplied with standard form lenses, ABS moulded tray in Leatherette Carrying Case.
Product name: Trial Lens Set Model: DYTLS09 Specifications: 1. 232pcs lenses 2. Outer Case: Wooden case(Yellow) 3. Composition: Spheres: 35 pairs each of concave and convex Cylinders: 17 pairs each of concave and convex Prisms: 12 pieces Accessories: 12 pieces Aperture: 22MM
A trial lens set, also known as a trial lens kit or trial frame set, is a collection of lenses used by optometrists and ophthalmologists during eye examinations to determine a patient's prescription for corrective lenses, such as glasses or contact lenses. These sets typically contain a variety of lenses with different optical powers and specifications, allowing the eye care professional to conduct a comprehensive refraction test and find the most suitable prescription for the patient. Lens Types: Trial lens sets typically include spherical lenses, cylindrical lenses, and prism lenses. Spherical lenses correct for nearsightedness (myopia) or farsightedness (hyperopia), while cylindrical lenses correct for astigmatism. Prism lenses are used to correct alignment and binocular vision issues. Lens Powers: The lenses in a trial lens set come in a range of powers, usually measured in diopters (D), which indicate the strength of the lens. Positive (+) powers are used to correct hyperopia, while negative (-) powers correct myopia. Cylinder lenses also have a cylindrical power component to correct astigmatism. Lens Diameter and Thickness: Trial lenses come in various diameters and thicknesses. Thicker lenses may have higher powers or prisms, while smaller diameters are used for more precise testing. Lens Material: Trial lenses are typically made of high-quality optical glass or plastic materials that provide accurate refractive properties and durability. Mounting System: Trial lenses are often mounted in metal or plastic rims that fit into a trial frame. The trial frame allows the eye care professional to hold and position the lenses in front of the patient's eyes during the refraction test. Accessories: Some trial lens sets may include additional accessories, such as lens holders, lens cleaning tools, and a carrying case for convenient storage and transportation. During a refraction test, the eye care professional uses the trial lens set along with a phoropter or trial frame to present different lens combinations to the patient and determine the best prescription for optimal vision correction.
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