These air-spaced or cemented doublets are designed for application in coherent or incoherent optical systems for information processing. Spherical, coma, astigmatic and achromatic aberrations are corrected. The components can be applied as achromatic collimators.

Similar to plano-convex lenses, a bi-convex lens has a positive focal length and focuses parallel rays of light to a spot. Because the front and back surface of the lens are spherically convex and have the same radius of curvature, in situations where the object and image are at equal of near equal distances from the lens, it particularly minimizes spherical aberration, at the same time, aberration coma and distortion are also identically canceled. As a guideline, bi-convex lenses offer minimum aberrations at the conjugate radio between 5:1 and 1:5.

Circular Cylinder Plano-Convex

Similar to a Plano-Concave lens in profile, but only as cylinder instead of a sphere, this cylindrical lens focuses light only in one as a cylinder dimension. It can be used with cylindrical plano-convex lens together in beam expander applications.

Similar to a Plano-Convex lens in profile, but only as a cylinder instead of a sphere, this cylindrical lens focuses light only in one dimension. It can also transform a point image into a line image or charging the height of an image without affecting its width. There are two circumference shapes, rectangular.

F-theta Lenses are plane field objectives, which are commonly used in combination with XY galvanometer scanner. Contrary to a normal lens which focuses a input collimated beam on a spherical image plane, a F-theta lens focuses on a flat image surface. At the same time, it maintains almost constant spot size over the entire field when the input beam scans with input angle ??The position of the spot on the image plane is directly proportional to the scan angle, i.e. F-theta condition: y '=f '*?Daheng F-theta lens series (GCO-31) fulfils the F-theta condition better than 0.1%.

Fused Silica is the material used in UV region and imaging applications. It has high transmission from 200nm to 2.5µm. In addition, it also can be used in higher operating temperatures. A plano-concave lens diverges parallel input rays and has a negative focal length. The output rays do not actually meet to form a real focus and appear to be diverging from a virtual spot located on the object side of the lens.

Fused Silica is the material used in UV region and imaging applications. It has high transmission from 200nm to 2.5µm. In addition, it also can be used in higher operating temperatures. Fused silica positive lenses are most commonly used for focusing parallel rays of light to a spot.

The GCL-2011 series diffuser is suitable for applications that require a Gaussian distribution of scattered light intensity. There are three polishing specifications: 220, 600 and 1500 grits. The polishing surface specifications for different purposes can realize a variety of scattering applications from coarse to fine. Generally, coarse sand (220-grit) can achieve better diffuse scattering, but the transmittance is lower; while fine polishing (600-grit and 1500-grit) has a lower diffuse scattering effect but higher transmittance. When using and installing the diffuser, the polished surface should be far away from the light source. There are φ25.4mm and φ50.8mm diffusers each grits.

GCL-201201 alignment sheet is a ground glass diffuser with 1500-grit on both sides, with an 1 mm alignment hole in the middle. Due to the diffuse reflection characteristics of the grounded glass, the beam size and spot position can be seen. The alignment sheet is used to observe the beam state and the position of the exiting beam in the optical path, and it is convenient to adjust the optical path.

An achromatic-doublet consists of a negative low-index(crown glass)cemented with a positive high-index(flint glass)lens. These lenses are computer-optimized for infinite conjugate ratio. While the output rays do not actually meet to form a real point, they appear to be diverging from a virtual point located on the object side of the lens.

A plano-concave lens diverges parallel input rays. It has a negative focal length. While the output rays do not actually meet to form a point, they do appear to be diverging from a virtual image located on the object side of the lens. At absolute conjugate ratio greater than 5:1 and less than 1:5, plano-concave lenses are nearly the best form lens to reduce spherical aberration, coma, and distortion. The curved surface of the lens should face the object in distance or infinite conjugate, except in a high energy laser system, this should be reversed to eliminate the possibility of a virtual focus.

Plano-convex lenses are mostly used for focusing parallel rays of light to a spot. The asymmetry of these lenses between the front and back surface minimizes spherical aberration effectively, particularly in the situations where the object and image are not at equal distance from the lens. The optimum case is where the object is placed at infinity (regarded as parallel rays entering lens) and the image is on the focus, which has infinite conjugate ratio, i.e. object distance/image distance. The curved surface of the lens should face the object direction.

An achromatic-doublet consists of a positive low-index(crown glass)cemented with a negative high-index(flint glass)lens. These lenses are computer-optimized for infinite conjugate ratio. They also exhibit excellent paraxial performance, with minimal spherical aberration, coma and chromatic aberration. When used for imaging, the convex lens should face the object or the image that is furthest away.

Rod Lenses are polished on the circumference and ground on both ends. It is similar to a Plano-Convex cylinder lens. Collimated light passing through the diameter of the rod will be focused into a line.