High Crystal Glass Triangular Optical Prism

2 month ago

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Danyang Horse Optical Co., Ltd

 3 year year

Product details

A precision biconvex prism optical lens is an optical element composed of two outwardly protruding spherical surfaces, with equal curvature radii on both sides and a symmetrical structure. Its core characteristic is a longer focal length in the middle and a shorter focal length at the ends, which allows light to effectively converge and form a clear focus or image when passing through the lens. This design makes it an indispensable component in optical systems, widely used in scenes that require focusing or imaging.

Precision biconvex prism optical lenses change the path of light rays through the principle of refraction. When light enters a precision biconvex prism optical lens from air, it refracts at the first convex surface and bends towards the center; Subsequently, it refracts again on the second convex surface, further converging the light rays. This double refraction process causes parallel rays (such as those from a point light source) to converge at a single point (focal point), or creates an enlarged real image of the object's rays. The focal length (f) is the distance from the center to the focal point of a precision biconvex prism optical lens, which determines the degree of light convergence. The longer the focal length, the slower the light convergence, and vice versa.

The focal length (EFL) of a precision biconvex prism optical lens: The focal length is a core parameter that directly affects the imaging quality. For example, a biconvex lens may have a focal length of 38.1mm, suitable for medium distance focusing needs. The focal length error is usually controlled within ± 2% to ensure accuracy.

Diameter and thickness: Diameter (such as 12.7mm) and center thickness (such as 4.0mm) affect luminous flux and structural stability. The calculation of edge thickness is based on the center thickness and curvature radius, and the formula is: edge thickness=center thickness - (vector height 1+vector height 2), where the vector height is determined by the curvature radius and refractive index.

Coating: Coating reduces reflection loss and improves light transmittance. Common coating types include AR (anti reflective) films, such as AR650~1050nm, which are suitable for the infrared band and enhance performance at specific wavelengths.

Material: The commonly used material is K9 optical glass, which has high transparency and stability, suitable for precision optical applications.

4. Application scenarios

Microscope and Telescope: Double convex lenses are used for objective and eyepiece lenses to magnify images through combination. For example, in a microscope, the objective lens forms an enlarged real image, the eyepiece further magnifies, and the total magnification of the system depends on the lens spacing and focal length.

Laser system: In laser equipment, a biconvex lens focuses the laser beam to increase energy density, used in cutting, welding, or medical fields.

Photography equipment: As a part of the camera lens, the dual convex lens helps focus light and form clear images, especially performing well in fixed focus lenses.

Experiment and research: Suitable for optical experiments such as optical path adjustment, interferometric measurement, etc., due to its high precision and stability.

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Danyang Horse Optical Co., Ltd

 Audited supplier

3 year

Address: Zhenjiang, China

Main Product: Optical Lens, Optical Prism, Beam Splitter, Optical Filter, Infrared Optical, Laser lens

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