Double Convex lens has a positive focal length, and with two outward surfaces. The two surfaces are with same radius of curvature, thereby minimizing spherical aberration. Some biconvex lenses are with different radius of curvature for both surfaces. Bi convex lenses always used as magnifying and condensing lenses. We manufacture bi convex lenses with competitive prices and quality. We offer custom made service for the spherical lenses, cylindrical lenses, and optical windows.
Custom Made capabilities:
Our company introduction:
Nanjing Shuncheng Optical Components Co.,Ltd. is a professional manufacturer of precision optical spherical lenses, cylindrical lenses, optical plates/windows and optical filters for power laser applications, opto-mechanics, electro-optical and optical instruments. Our factory was founded in the year 1998, with 65 workers.. We are located in Nanjing city, about 200km from Shanghai. Most of our workers are rich-experienced workers, and they have skilled technology in production, research and inspection. We have polishing machines, grinding machines, centering machines, coating machines and cutting machines, as well as advanced testing machines.
Our Products Range:
Our Excellent Products:
Our testing and inspection:
Our workshop for production:
How does double convex lens work in optical system ?
Double convex lenses made of transparent glasses. They are thicker at the center than the edge. We also call bi convex lens a converging lens, because they refract parallel light rays so that they meet. So they are widely used for eyeglass, telescopes, microscope and magnifying glasses. But how does a bi convex lens ?
Bi convex lens has focal points on both sides of the lens, but it's necessary to use points at twice the focal length to locate objects and image. Therefore, along the principal axis, there are points identified as F and 2F on both sides of the lens.
As with mirrors, we only need to trace two rays in order to locate the image for lenses. Both rays change direction while inside the lens, and their convergence point on the opposite side of the lens is the image location. As can be seen in the figure above, Ray 1 approaches the lens parallel to the principal axis and is refracted through the focal point on the other side. R2 travels through the focal point and is then refracted parallel to the principal axis. The yellow arrow on the right of the lens is inverted image.
Custom Made capabilities:
| Material | N-BK7, UV fused silica, JGS1,N-SF11, Silicon, Germanium, etc. |
| Diameter available | 1.5mm to 700mm |
| Tolerance | +/-0.03mm |
| Thickness tolerance | +/-0.03mm |
| Surface quality | 20/10 or better |
| Surface accuracy | Lambda/4 or better |
| Centering | 1 arc min |
| Chamfer | protective or do as per requested |
| Coating | anti reflective coating for visible, UV, infrared wavelengths |
Our company introduction:
Nanjing Shuncheng Optical Components Co.,Ltd. is a professional manufacturer of precision optical spherical lenses, cylindrical lenses, optical plates/windows and optical filters for power laser applications, opto-mechanics, electro-optical and optical instruments. Our factory was founded in the year 1998, with 65 workers.. We are located in Nanjing city, about 200km from Shanghai. Most of our workers are rich-experienced workers, and they have skilled technology in production, research and inspection. We have polishing machines, grinding machines, centering machines, coating machines and cutting machines, as well as advanced testing machines.
Our Products Range:
- Spherical lens, including plano convex lens, plano concave lens, biconvex lens, biconcave lens,achromatic lens, ball lens, drum lens, etc.
- Cylindrical lens,including plano convex cylindrical lens, plano concave cylindrical lens, biconvex cylindrical lens, biconcave cylindrical lens, cemented cylindrical lens, cylinder lens, cylinder rod lens.
- Optical window and plate. Round window, square window, rectangular window, wedge window, optical filter window, window with hole.
- Thin film: AR coating, reflective coating for mirror, band pass filter, beam splitter and density filter.
Our Excellent Products:
Our testing and inspection:
Our workshop for production:
How does double convex lens work in optical system ?
Double convex lenses made of transparent glasses. They are thicker at the center than the edge. We also call bi convex lens a converging lens, because they refract parallel light rays so that they meet. So they are widely used for eyeglass, telescopes, microscope and magnifying glasses. But how does a bi convex lens ?
Bi convex lens has focal points on both sides of the lens, but it's necessary to use points at twice the focal length to locate objects and image. Therefore, along the principal axis, there are points identified as F and 2F on both sides of the lens.
As with mirrors, we only need to trace two rays in order to locate the image for lenses. Both rays change direction while inside the lens, and their convergence point on the opposite side of the lens is the image location. As can be seen in the figure above, Ray 1 approaches the lens parallel to the principal axis and is refracted through the focal point on the other side. R2 travels through the focal point and is then refracted parallel to the principal axis. The yellow arrow on the right of the lens is inverted image.