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Plano-concave Hemispheric Lens
Plano-concave Hemispheric Lenses are positive lenses that can flat10 the opposite curve of the wearer's eye. These lenses increase the distance between the two surfaces of the eye, thus providing a fuller appearance.We are a plano concave cylindrical circle lens supplier in China. We offer favorable wholesale prices for customers.
A single lens is a lens composed of pure single elements, which can be considered the basic elements of developing an optical system. Based on the design of optical engineers, the multi-optical single lens may be used in the optical system of other optical systems.
As a basic optical element, a single line lens is usually used for engineers' design and further assembly work for various applications such as imaging collimation. Our manufacturing capabilities cover flat-convex / concave, double concave, double convex, positive and negative meniscus, from optical glass and fused silica and even crystals. With our reliable coating technology, AR or V coatings can be applied to achieve the expected results. Special treatment, i.e. edge blackening / special packaging/labels can also be provided on request.
Our single lens production capacity helps our customers build their unique and cutting-edge applications, such as microscope equipment, with a diameter of 2.5mm ~ 3.5mm, which is suitable for projection/observation applications. We can provide single lenses with a diameter of 180 + mm. In addition to the conventional visible spectrum single lens, we can also process NIR / SWIR / MWIR / LWIR lens.
For very precise and sensitive system requirements, please contact us for more information. Our engineers are happy to evaluate your design and have our manufacturing input help experience to define the most appropriate tolerance.
Spherical lens
A spherical lens is a reflective surface of a part of a sphere. The surface can be convex or concave. The concave spherical lens has an inward convex reflecting surface and reflects light inward. The convex spherical lens has a reflecting surface convex towards the light source and reflects light outward. The substrate materials of the spherical lens include various optical glasses, ultraviolet fused quartz, infrared fused quartz, calcium fluoride (CaF2), magnesium fluoride (MgF2), zinc selenide (ZnSe), germanium (GE), silicon (SI), etc., and various optical films are provided, such as antireflection film, high reflection film, beam splitting film, metal film, etc. The broadband antireflection film can be applied to ultraviolet, visible, near-infrared, and mid-infrared bands.
Concave spherical lens properties:
1. The reflection of a concave spherical lens obeys the reflection law of light.
2. When the light from the spindle is reflected by the concave spherical lens, the reflected light will focus on the focus. The focus of the concave spherical lens is the convergence point of actual light, so it is the real focus.
3. Concave spherical lens focuses light, and the smaller the focal length, the stronger the convergence ability.
4. Four special rays: the rays parallel to the main axis will be reflected by the concave spherical lens and focused at the focus; The incident light on the focus is reflected and parallel to the main axis; Along the original path, the incident light in the center of the sphere is reversed; The incident light from the vertex is symmetrical to the reflected light on the principal axis.
Convex spherical lens properties:
1. The reflection of a concave spherical lens obeys the reflection law of light.
2. The focus of the convex spherical lens is the virtual focus.
3. Convex spherical lens has different effects on light. The smaller the focal length, the greater the divergence ability.
4. Four special rays: (similar to the concave spherical lens).
Application of spherical lens
A.Array lens is used for imaging, which is used in monitoring, microscopy, and other fields.
B.The spherical and optical aberrations are corrected by the glued lens to obtain the ideal image quality.
