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CoupletechCo.Ltd.

CoupletechCo.Ltd.
location Jinan, China

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Our Products

  1. Laser Crystal 25 Products available
  2. Optical Element 22 Products available
  3. Nolinear Optical Crystal 17 Products available
  4. Pockels Cell 14 Products available
  5. Polarizing Optic 12 Products available
  6. Diode Pumped Pulsed 3 Products available
  7. Pockels Cell Driver 3 Products available
  8. Mirror / Crystal Mount 2 Products available
  9. Diode Pumped CW 1 Products available
  10. Accessories 1 Products available

Optical Element

Wholesale various high quality Optical Adapter, Optical Elements, Diffractive Optical Element, Diffractive Optics from China.

Sapphire Laser Crystal Windows

Sapphire Laser Crystal Windows
₹ 91 / Piece Get Latest Price
Sapphire is a single crystal form of Al2O3, with a favorable combination of chemical, mechanical and optical properties. Sapphire is resistant to attack by strong acids, enabling use in a corrosive atmosphere. It is resistant to scratch and abrasion with very high Knoop hardness of 1800 parallel to the optic axis (C-axis), 2200 perpendicular to the optic axis. Uncoated Sapphire windows are ideal for harsh conditions, including environments subject to high temperatures, high pressures, strong vacuum, or corrosive atmospheres. Sapphire has high compressive strength and is resistant to attack from strong acid. Advantage of Sapphire as below:Ideal for high temperature, high pressure, or strong vacuum environments;Highly corrosion resistant;Transparent from 170 nm to 5.5 m;Extremely hard and more durable than standard optical glass. Coupletech provides Sapphire isone of the hardest materials, and possesses very good transmission during therange of visible and near IR spectrum. It is widely used as optical window in infraredand far infrared military equipments, apparatus and instruments of satelliteand space technology, and navigation and spaceflight, such as night infraredscopesight and night vision camera, etc. The sapphire windows are intensivelyapplied in high-tech fields. Coupletech also provides all kinds of laser crystal and laser components.www.coupletech.com
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Znic Selenide (ZnSe) Windows

Znic Selenide (ZnSe) Windows
Zinc Selenide (ZnSe) has low IR absorption, and is transparent across a very wide 0.6-16 mspectral range. This is advantageous for thermal imaging, where temperatures of remote objects are ascertained via their blackbody radiation spectrum. Long wavelength transparency is crucial for imaging room temperature objects, which radiate at peak wavelength of approximately 10 mwith very low intensity. Zinc Selenide (ZnSe) has a high index of refraction which requires an anti-reflection coating to achieve high transmission. Our broadband AR.20 coating is optimized for 3 m to 12 m.Zinc Selenide (ZnSe) windows are an excellent choice for a variety of IR applications including high power CO2 laser systems. Zinc Selenide offers low IR absorption, and high resistance to thermal shock. However, windows must behandledwith caution due to material's softness. Applications of Zinc Selenide (ZnSe) as below:Ideal for high power CO2 laser applications;Extremely low IR absorption;Highly resistant to thermal shock;3 to 12 mbroadband IR antireflection coating;Soft material not recommended for harsh environments;Low dispersion and low absorption coefficient. You can customise Zinc Selenide (ZnSe) windowsto your needs.
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Dove Prisms

Dove Prisms
Named for its inventor Harting Dove, dove prisms (with antireflection coatings onthe ends) completely invert an image by 180 degrees. If the prism is rotated aboutits axis the image will rotate at twice the rate of rotation of the prism. Dove prismsprovide a convenient and precise method of rotating a beam.The long lengthand square profile makes them easy to mount in a cylindrical sleeve. Dove prisms need to be used with collimated or near-collimated beams becauseof the very limited field of view. When used as an image inverting prism the hy-potenuse face acts as a TIR surface and is therefore normally not coated.Therefore. it is important to keep this surface clean. Dove prisms have an unusual and very interesting characteristic - if you look through the prism and rotate it around a longitudinal axis, the image rotates through twice the angle through which the dove prism itself rotates. For optimal peformance, use dove prisms with collimated light. The top surface of each TECHSPEC Dove Prism is ground and the longest length (specified by dimension B) features an unbeveled sharp edge. Dove Prisms are offered uncoated, with anti-reflection coated diagonal faces, or with aluminized diagonal faces. Aluminized dove prisms feature a protected aluminum coating with black Krylon paint on the diagonal faces and are ideal for displaced retroreflection. They provide a u-turn for incident laser beam light. Reflection is displaced.
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NdYVO4+KTP Green Diode-Pumped Laser Crystal

NdYVO4+KTP Green Diode-Pumped Laser Crystal
Green Laser Crystal Glued Crystals(Nd:YVO4+KTP) are consisted of laser crystal Nd:YVO4 and non-linear crystal KTP. Green Laser Crystal Glued Crystals(Nd:YVO4+KTP)are combined together by optically contacted and can generate green laser with 808nm diode pumping. Green Laser Crystal Glued Crystals(Nd:YVO4+KTP)have the advantages of high conversion efficiency, high output power, compact design and low cost etc. Applications for DPMs include green laser pointers, laser displays, DPSS green lasers and surveying laser systems.
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Plano Concave Cylindrical Lens

Plano Concave Cylindrical Lens
Coupletech supplies high quality plano convex cylindrical lenses and plano concave cylindrical lenses. Cylindrical lenses as a kind of optical components are used to correct astigmatism in the eye and in rangefinders, to produce astigmatism, tretching a point of light into a line, they are widely used in bar code scanning, projection optics systems, laser projection, laser measurement systems and holography. A cylindrical lens is demonstrated using two planar substrates and a homogeneous liquid crystal (LC) layer. The top substrate has slit electrodes on its outer surface and the bottom has a transparent electrode on its inner surface. An applied voltage across the cell induces a cylindrical-like gradient refractive index within the LC layer which causes light to focus. The focal length is tunable by the applied voltage. Such a cylindrical lens can be easily fabricated with wide aperture size.Cylindrical lenses have a spherical radius in one direction. Thisenables the light to be focused in one axis. A point of light can thus be stretched into a single line.
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Beam Splitter Penta Prism

Beam Splitter Penta Prism
Coupletech offers Beamsplitter Penta Prisms. By adding a wedge and with partial reflective coating on first reflective surface, Penta Prism can be used as Beamsplitter. We supply Beam splitter Penta Prism with standard Transmissionreflection (TR) ratio of 2080, 5050.Other TR ratio is available upon request. Coupletech also offer Corner Cube Retro-Reflectors have three mutually perpendicular surfaces and a hypotenuse face. Corner Cube Retro-reflectors operates on the principle of total internal reflection (TIR). A beam entering the effective aperture is reflected by the three roof surfaces and emerges from the entranceexit surface parallel to itself. This property is independent of orientation of the retro-reflector, within acceptance angle limitations. For applications in which either the acceptance angle for TIR is exceeded, or the reflecting surfaces can not be kept sufficiently clean for TIR, a metal or dielectric coating can be applied to the reflecting surfaces.
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Coating Type Filter and Colored Glass Filter

Coating Type Filter And Colored Glass Filter
Coating type Filter is Filter with Metallic Coating. It is including UV Bandpass Filters, VISBandpass Filters and NIR Bandpass Filters. UV bandpass filters aremanufactured using Plasma-assisted Deposition ( PAD ) and Ion-assisted Deposition( IAD ) processes by Ultraviolet ( UV ) wavelength range.VIS Bandpass Filters are in addition to our standardBandpass Filters for Biochemical Analytical and Fluorescence in Visible wavelength range. NIR Bandpass Filters aremanufactured using PAD and IAD by Near Infra-red ( NIR ) wavelength range. Color glass filters can be applied to Photographing Apparatus, Meter and Instrument, Optical Device, UV Analyzar. Due to its selective absorption in visible wavelength range, color glass filter will exhibit various color depending the glass type. Color glass filter provides an economical filter for various applications. Optical glass filters are widely used in safety glasses, industrial measurement, regulation technology and environment protection. Coating type Filter and optical glass Filter available performs beautifully undervaried operating conditions, functions perfectly regardless of the incidentangle of light entering the filter, remains intact under stressful workingconditions, and is resistant to damage from corrosive substances.
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High Quality Dove Prism

High Quality Dove Prism
Coupletech provides Dove prisms as a kind of optical element, belongs to a kind of specialReversion prisms. Dove prism is always used to rotate image. If you rotate the prism around a longitudinal axis, the image rotates through twice the angle the prism rotates through. Sometimes, dove prism is also used for 180deg reflection. Dove Prisms are also known Reversion prisms. When the prism is rotated about its length axis, the image viewed through the prism rotates at twice the prism rotation rate.
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Plano-concave Cylindrical Lens

Plano-concave Cylindrical Lens
Coupletech supplies various of lenses for different application, including laser cavity, laser beam shaping, image transmission, optical measurement, optical equipment etc. So we can supply different quality standard for different application. Customer mostly to use high quality for laser, imaging, optical measurement application, and low standard quality for low cost and large quantity application. Plano-convex lens: Positive focus length. Most suitable where one conjugate is more than five times the other, e.g. in sensor application or for use with near collimated light. Double-convex lens:Most suitable where the conjugates are on opposite sides of the lenses and the ratio of the distances is less than 5:1, e.g. as simple image relay components. Plano-concave lens:Negative lens with the form most suitable where one conjugates is more than five times the other, e.g. producing divergent light from a collimated input beam. Double-concave lens:Negative lens with the form most suited to producing diverging light or a virtual image, where the input light is converging. MeniscusPositive lens:The lens may be used to increase the numerical aperture of a positive lens assembly, without an undue increase in the aberrations. MeniscusNegative lens:The best lens form where one conjugates is relatively far from the lens or where both conjugates are the same size of the lens. Cylindrical lens: Used to provide focusing power in one section
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High Efficiency Reflection Grating 1200 Line/mm

High Efficiency Reflection Grating 1200 Line/mm
We provide the replication copied from the master grating. Grating has the same performance at a lower price.A diffraction grating is an optical device exploiting the phenomenon of diffraction. It contains a periodic structure, which causes spatially varying optical amplitude andor phase changes. Most common arereflection gratings, where a reflecting surface has a periodic surface relief leading to position-dependent phase changes. However, there are alsotransmission gratings, where transmitted light obtains position-dependent phase changes, which may also result from a surface relief. Features of High Efficiency Reflection Grating, 1200 linemm for 1520nm-1570nm as below: Popular applications in Telecom @1550nm, especially for WSS; Very high diffraction efficiency; Excellent feature fidelity and groove uniformity; Extreme environmental stability; Low light scatter; Very competitive pricing; Strict quality control; Substrate materials: UVFSULE. Features of High Efficiency Reflection Grating, 1200 linemm for 190nm-1000nm as below: Popular applications for spectroscopy; Very high diffraction efficiency; Excellent feature fidelity and groove uniformity; Extreme environmental stability; Low light scatter; Very competitive pricing; Strict quality control; Substrate materials: UVFSBK7ULE. Diffraction gratings have many applications: Besides, Coupletech can provide a customized grating.
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Cylindrical Spherical Lenses

Cylindrical Spherical Lenses
The cylindrical lens isis spherical lens, which isable to reduce the ball difference and color difference effectively.It divided into flat convex cylindrical lens, plane concave cylindrical lens, double convex cylindrical lens and double concave cylindrical lens. Have a single-dimensional amplification function. Our cylindrical lenses are designed for applications requiring of a light source. They are offered in either plano-concave or plano-convex configurations, which are meant to expand or focus light. Material are N-BK7 glass, UV fused silica, or CaF2, all of which are available uncoated or with an antireflection coating. The Features:High Precision Dimension Control, Optional Substrate Material Applications:Projection Systems, Imaging Systems, Optical Display Systems, Laser Measurement Systems. We also offer round versions of our cylindrical lenses.Many of our lenses are offered with a variety of coating options for the Ultraviolet (UV), visible, or Infrared (IR) spectrums.
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Assembled Lens

Assembled Lens
Achromatic Lenses consist of two or more elements, usually of crown and flint glass that have been corrected for chromatic aberration with respect to two selected wavelengths. They are used to minimize or eliminate chromatic aberration. The achromatic design also helps minimize spherical aberrations. Coupletech Co., Ltd. has good capacity from optical design till to assembly. So we supply various doublet lens, tripart lens and assembled lens for achromatic optical system.Features: OEM design or Coupletech designUV glue cemented doublet and tripartBroadband AR coatingMounting is available required Minimal chromatic aberration Applications: Fluorescence microscopy; Image relay, inspection, or spectroscopy.b
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