Optical Low Pass Filters
- 20150825160050
- Model No:
N/A
- Product Description:
1. Optical low-pass filters (OLPF) are mainly for high image quality by eliminating screen effect, which was popular in CCD or CMOS array detector image systems. OLPF was designed by crystal birefringence characteristic, and depends on various CCD sp...
Optical Lenses
- 20150825160010
- Model No:
N/A
- Product Description:
1. Lens types include plano-concave, plano-convex, biconvex, biconcave, meniscus, cemented, and cylindrical lenses.
2. They could be used on telescope, binoculars, collimator, optical transceiver, magnifier, alignment instrument, scanner, microscope...
Optical Windows
- 20150825155920
- Model No:
N/A
- Product Description:
1. indows are optical glass with ground and polished faces that are relatively parallel. They are used to isolate two physical environments while allowing light to pass. When selecting windows, you should consider the following: material, transmissi...
Optical Prisms
- 20150825155828
- Model No:
N/A
- Product Description:
1. COT provides prisms with various type and cemented prisms. The precision achieved 2" for 90° and 10" for 45° angle. Customers could have versatility for different type prism choices with various coating from our ultimate service.
2. The...
Aspherical Mirrors
- 20150825155722
- Model No:
N/A
- Product Description:
1. Aspheric mirrors and spheric mirrors are suitable for focus adjustment, convergence, and image forming without color aberration. Aspheric and spherical mirror are used for focus adjustment, convergence, image forming with low color aberration. Ref...
Reflection Mirrors
- 20150825155629
- Model No:
N/A
- Product Description:
1. Aspherical and spherical mirror are used for focus adjustment, convergence, project image with low color aberration. Reflection mirror applications are from laser beam confinement to instrument sub-assembly and high performance image. Especially, ...
IR Lenses And UV Lenses
- 20150825155528
- Model No:
N/A
- Product Description:
1. COT developed many optical components in infra ray and ultra violate wavelength range including: Silica, Silicon, Germanium, Sapphire, CaF2, MgF2, ZnS, ZnSe, etc.
2. Though those materials often owned extremely high or low hardness coefficient, m...
Standard Plates
- 20150825155447
- Model No:
N/A
- Product Description:
1. Standard plates are master of mass production for glass lens testing. Usually, the fabrication of these masters is kind of the state of art. COT could provide flat or spherical standard plate with different sizes and shapes. The irregularity reach...
Beam Splitters
- 20150825155211
- Model No:
N/A
- Product Description:
A beam splitter is an optical device that splits a beam of light in two. It is the crucial part of most interferometers.
In its most common form, a cube, it is made from two triangular glass prisms which are glued together at their base using Canada...
Double-Concave (DCV) Spherical Lenses
- 20150825155055
- Model No:
N/A
- Product Description:
These lenses have negative focal lengths, diverge collimated incident light, and form only virtual images which are seen through the lenses. They are often used to expand light beams or increase focal lengths in existing systems.
Double-Convex Lenses (Optical Lenses)
- 20150825155001
- Model No:
N/A
- Product Description:
Like plano-convex lenses, double convex lenses have positive focal lengths and form both real and virtual images. Symmetry is assured by finishing both surfaces with the same tool. Because of symmetry, aberrations including coma, distortion and later...
Plano-convex (PCX) Spherical Lenses (Optical Lenses)
- 20150825154902
- Model No:
N/A
- Product Description:
These lenses have positive focal lengths, converge incident light that form both real images and virtual images. They are widely used in telescopes, collimators, optical transceivers, magnifiers, radiometers and condensers.
Plano-Concave (PCV) Spherical Lenses
- 20150825154755
- Model No:
N/A
- Product Description:
These lenses have negative focal lengths, diverge collimated incident light, and form only virtual images which are seen through the lenses. They are often used to expand light beams or increase focal lengths in existing systems.
Meniscus Lenses
- 20150825154701
- Model No:
N/A
- Product Description:
A lens having two spherically curved faces, one convex and the other concave, so that it has the form of a shell. A positive meniscus lens is thicker in the middle than at the edges and serves as a converging lens; a negative meniscus lens thickens t...
Aspheric Lenses
- 20150825154606
- Model No:
N/A
- Product Description:
Aspheric lenses are any lenses whose surface angles and profiles are neither part of a sphere nor part of a cylinder. Conventional or non-aspheric lenses have the same curve across their entire surface, like a ping-pong ball. Aspheric lenses accompli...
Achromatic Lenses
- 20150825154505
- Model No:
N/A
- Product Description:
Achromatic lenses are doublet systems consisting of one crown and one flint element, cemented together along a matching curvature, so that white light coming into the lens is all focused (imaged) at the same point on the other side of the lens. They ...
Cylinder Lenses
- 20150825154403
- Model No:
N/A
- Product Description:
Cylindrical lenses have at least one surface that is formed like a portion of a cylinder. Cylindrical lenses are used to correct astigmatism in the eye, and, in rangefinders, to produce astigmatism, stretching a point of light into a line. Some style...
Ball Lenses
- 20150825154247
- Model No:
N/A
- Product Description:
Ball lenses are highly polished spheres made of optically transparent homogeneous materials. Ball Lenses are commonly used for laser collimating and focusing, laser-to-fiber coupling, fiber-to-fiber coupling, and fiber-to-detector coupling. Larger sp...
Condenser Lenses
- 20150825154143
- Model No:
N/A
- Product Description:
Condenser lenses concentrate light into a projected beam. Used in projectors, enlargers, spotlights, and photo cell systems, they are usually mounted in pairs so that their convex surfaces are nearly in contact.
Fresnel Lenses
- 20150825154034
- Model No:
N/A
- Product Description:
Fresnel lenses are flat rather than thick in the center and can be stamped out in a mold. Fresnel lenses are commonly used on spotlights. Lamps equipped with this lens are called Fresnels. Fresnel lenses can be positive or negative. A positive lens ...
Micro Lenses
- 20150825153945
- Model No:
N/A
- Product Description:
Micro lenses are small lenses, generally with diameters less than a millimetre (mm) and often as small as 10 micrometres (μm). The small sizes of the lenses mean that a simple design can give good optical quality but sometimes unwanted effects arise ...
Specialty Lenses
- 20150825153901
- Model No:
N/A
- Product Description:
Micro lenses are small lenses, generally with diameters less than a millimetre (mm) and often as small as 10 micrometres (μm). The small sizes of the lenses mean that a simple design can give good optical quality but sometimes unwanted effects arise ...
Flat Mirrors
- 20150825153753
- Model No:
N/A
- Product Description:
Flat mirrors are smooth, highly polished, flat surfaces, for reflecting light. The actual reflecting surface is usually a thin coating of silver, aluminum, or other material. Most flat mirrors are coated, and then overcoated a second time to add a le...
Diverging (Convex) Mirrors
- 20150825153630
- Model No:
N/A
- Product Description:
A convex mirror, fish eye mirror or diverging mirror, is a curved mirror in which the reflective surface bulges toward the light source. Convex mirrors reflect light outwards, therefore they are not used to focus light. Such mirrors always form a vir...
Focusing (Concave) Mirrors
- 20150825153442
- Model No:
N/A
- Product Description:
A concave mirror, or converging mirror, has a reflecting surface that bulges inward (away from the incident light). Concave mirrors reflect light inward to one focal point, therefore they are used to focus light. Unlike convex mirrors, concave mirror...
Polarizing Beamsplitters
- 20150825152608
- Model No:
N/A
- Product Description:
Polarizing Cube Beamsplitters split randomly polarized beams into two orthogonal, linearly, polarized compoents. S-polarized light is reflected at a 90 degree angle while P-polarized light is transmitted. Each beamsplitter consists of a pair of pre...
Cube Beamsplitters
- 20150825152504
- Model No:
N/A
- Product Description:
Cube beamsplitters are constructed by cementing two precision right angle prism together with appropriate interference coating on the hypotenuse surface. The absorption loss to the coating is minimal transmission and reflection approach 50%(average)...
Non-polarizing Beamsplitters
- 20150825152400
- Model No:
N/A
- Product Description:
Non-Polarizing Cube Beamsplitter consists of a pair of precision high tolerance right angle prisms cemented together with a metallic-dielectric coating on the hypotenuse of one of the prisms. The low polarization dependence of the metallic-dielectri...
Dispersion Prisms
- 20150825152024
- Model No:
N/A
- Product Description:
Dispersive prisms are used to break up light into its constituent spectral colors because the refractive index depends on frequency; the white light entering the prism is a mixture of different frequencies, each of which gets bent slightly differentl...
Bandpass Filters
- 20150825151918
- Model No:
N/A
- Product Description:
Combining an LP filter and an SP filter produces a bandpass (BP) filter. These filters usually have lower transmittance values than SP and LP filters, and block all wavelengths outside a selected interval, which can be wide or narrow, depending on th...
Color Filters
- 20150825151837
- Model No:
N/A
- Product Description:
Color filters are made of glass for maximum permanence, of liquid solutions in cells with transparent faces for flexibility of control, and of dyed gelatin or plastic (usually cellulose acetate) for economy, convenience, and flexibility. The plastic ...
Notch Filters
- 20150825151752
- Model No:
N/A
- Product Description:
An optical notch filter has a suspension of small absorbing particles which blocks a narrow band of frequencies. The small absorbent particles are suspended as a colloidal system which can either be solid, liquid or gas as host material. The absorbin...
Shortpass Filters
- 20150825151656
- Model No:
N/A
- Product Description:
A shortpass (SP) filter is an optical interference or coloured glass filter that attenuates longer wavelengths and transmits (passes) shorter wavelengths over the active range of the target spectrum (usually the ultraviolet and visible region). In fl...
Longpass Filters
- 20150825151550
- Model No:
N/A
- Product Description:
A longpass (LP) filter is an optical interference or coloured glass filter that attenuates shorter wavelengths and transmits (passes) longer wavelengths over the active range of the target spectrum (ultraviolet, visible, or infrared). Longpass filter...
Specialty Prisms
- 20150825151444
- Model No:
N/A
- Product Description:
COT provides prisms with various type and cemented prisms. The precision achieved 2" for 90° and 10" for 45° angle. Customers could have versatility for different type prism choices with various coating from our ultimate service.
The appli...
Light Pipes And Homogenizing Rods
- 20150825151348
- Model No:
N/A
- Product Description:
COT provides prisms with various type and cemented prisms. The precision achieved 2" for 90° and 10" for 45° angle. Customers could have versatility for different type prism choices with various coating from our ultimate service.
The appli...
Right Angle Prisms (Image Reflection)
- 20150825151243
- Model No:
N/A
- Product Description:
These prisms are used to direct beams at 90 degrees by using hypotenuse face in total internal reflection (TIR). The right angle prisms are often preferable to an inclined mirror in applications involving severe acoustic or inertial loads, because th...
Neutral Density Filters
- 20150825151137
- Model No:
N/A
- Product Description:
Neutral density (ND) filters have a constant attenuation across the range of visible wavelengths, and are used to reduce the intensity of light by reflecting or absorbing a portion of it. They are specified by the optical density (OD) of the filter, ...
Image Rotation Prisms
- 20150825151017
- Model No:
N/A
- Product Description:
COT provides prisms with various type and cemented prisms. The precision achieved 2" for 90° and 10" for 45° angle. Customers could have versatility for different type prism choices with various coating from our ultimate service.
The appli...
IR And UV Windows
- 20150825150913
- Model No:
N/A
- Product Description:
COT offers all types of UV and IR optical windows made from different materials: CaF2 , BaF2 , Ge, Silicon , KBr, ZnSe , Fused Silica. Special size and tooling are available upon request. In addition, we offer a variety of infrared and UV coating on ...
Visible Windows
- 20150825150833
- Model No:
N/A
- Product Description:
COT offers all types of Visible Windows made from different materials.
Optical Diffusers
- 20150825150729
- Model No:
N/A
- Product Description:
Optical glass diffusers diffuse the incoming light and reduce directionality in the beam. Ground glasses are useful for focusing screens and weak diffusion illumination systems. It is ideal for rear projection and a variety of optical applications.
Laser-Line Windows
- 20150825150649
- Model No:
N/A
- Product Description:
*Laser - Line Windows.
*Can be customized.
Specialty Windows
- 20150825150552
- Model No:
N/A
- Product Description:
*Specialty Windows.
*Can be customized.
CCD Camera Lenses
- 20150825150457
- Model No:
N/A
- Product Description:
*CDD Cameras.
*Can be customized.
Collimation Testers
- 20150825145554
- Model No:
N/A
- Product Description:
*Collimation Tester.
*Can be customized.
Monochrome Light Sources
- 20150825145413
- Model No:
N/A
- Product Description:
*Monochrome Light Source.
*Can be customized.
Optical Magnifiers
- 20150825145051
- Model No:
N/A
- Product Description:
*Magnifier.
*Can be customized.
