Cemented Zero-Order Waveplate

The true zero order waveplate means that the thickness of waveplate is very thin (less than 0.1mm) which make the true zero order waveplate excellent in temperature, wavelength and incident angle (about 20) bandwidth. Therefore, it is excellent choice for the highly accurate application. It is cemented with a block of glass which is limited to low and medium power application.

Key features:

- broad spectral bandwidth
- wide temperature bandwidth
- wide angle bandwidth
- cemented by epoxy

Technical capability

Material: Crystal quartz / bk7 optical glass


Dimension tolerance: +0.0, -0.1mm
Wavefront distortion: 8 @ 632.8nm
Retardation tolerance: 500
Wavelength range: 400-2100nm
Parallelism: < 1 arc second
Surface quality: 20-10 scratch & dig
Coating: Ar/ar coating, r < 0.2% on both surface at central wavelength

Waveplates

Waveplates, also known as retardation plates, are optical element having two principal axes slow and fast, that resolve an incident polarized beam into two mutually perpendicular polarized beams. The emerging beam recombines to form a particular single polarized beam. Retardations plates produce full, half, quarter and octadic-wave retardations.

Low order waveplates

The properties of low order waveplates are much better than the multi-order wave-plates because of its thinner thickness (less than 0.5mm). Better temperature (38), wavelength (1.5nm) and incident angle (4.5�) bandwidth and high damage threshold make it widely used in common application. Also it is economical.


Key features:
-thickness: 0.2-0.5mm
-high damage threshold
-better temperature bandwidth

-low cost

Technical capability

Material:crystal quartz
Dimension tolerance:+0.0, -0.1mm
Wavefront distortion:/8
Retardation tolerance:/500
Wavelength range:240-2100nm
Parallelism:< 1 arc second
Surface quality:20-10 scratch & dig
Coating:ar/ar coating, r < 0.2% on both surface at central wavelength

Roof Prism
A roof prism is a reflective optical prism to make two cross beams be parallel with each other. It contains a section where two faces meet at a 90 angle. These two 90 faces resemble the roof of a building, giving this prism type its name. Reflection from the two 90�° faces returns an image that is flipped laterally across the axis where the faces meet.
In some cases, passing through the prism, the image is both deflected right-to-left and top-to-bottom. The hypotenuse of the prism utilizes total internal reflection (TIR) to reflect the image through the prism. Polarization states may become rotated during reflection.
As a rich experienced manufacturer, substrate material in Photonchina can be chosen from all optical glasses (N-BK7, for instance), Fused Silica, Si, ZnSe, ZnS, CaF2, MgF2 etc.

Achromatic Waveplate

Achromatic waveplate is made from two different substrate materials such as crystal quartz and magnesium fluoride. For the single material,waveplateâ??s working wavelength is very limited because of the dispersion of the material. But Achromatic Waveplate uses two different kinds of materials,with the different dispersion, such waveplate is not sensitive to the wavelength change.

Dual Wavelength Waveplate

Dual wavelength waveplate is a special type of multiple waveplate that provides a specific retardance at two different wavelengths, itâ??s particularly useful when used in conjunction with other polarization sensitive components to separate coaxial laser beams of different wavelength. It is widely used to improve conversion efficiency in solid double frequency laser device.

Polarization Rotator

Due to the rotation activity of natural quartz crystal, it also can be used as polarization rotators so that the plane of input linearly polarized beam will be rotated at special angle which is determined by the thickness of quartz crystal.

Wavepalte Types:
Photonchinas waveplates include octadic waveplate (1/8 waveplate),quarter waveplates(1/4 waveplate), half wave plates(1/2 waveplate) and full waveplate
Both circular aperture and quadratic aperture are available.

Photonchinaâ??s waveplate can transmit light and modify its polarization state without attenuating, deviating, or displacing the beam.It is ideal for applications requiring high damage thresholds and retardation stability over temperature change, such as for use with lasers or infrared light sources.

High precision digital caliper

Product description
The new anyi high precision digital caliper provides an extra high resolution of 0.005mm for higher precision use. The clear lcd makes it easy to read. All high precision digital calipers also include an output port for rs equipped devices. This type of digital caliper is a tool for the most experienced toolmakers and machinists when the higher resolution is needed.

High precision digital caliper, whose resolution is 0.005mm or 0.00019 inch, is finer than those regular ones, whose resolution is only 0.01mm or 0.005inch, in the aspect of accuracy. Especially when micrometering is applied, its measuring accuracy will turn out much higher. Its permissible error, which is nearly half of that of regular ones within the same measuring range, makes the measuring more accurate.

Major features:
1. Zero-setting.
2. Data output.
3. Resolution: 0.005mm.
4. Lock to hold the slide in position.
5. Depth rod for depth measurement.
6. Hardened stainless steel measuring surface for long life.
7. Long life battery
8. Precision exceeds din862-88
9. Inch/mm conversion
10. Manual on/off.

Technical data:
Measuring range order no. Resolution permissible error
0-150mm(0-6") 110-051 0.005mm +/-0.010mm
0-200mm(0-8") 110-052 0.005mm +/-0.020mm
0-300mm(0-12") 110-053 0.005mm +/-0.030mm

Hs code: 90173
Trademark: anyi
Model: 110-051
Standard: iso9001-2000
Productivity: average 20, 000pcs/month
Unit price/payment: t/t in advance or l/c at sight
Origin: china
Packing: in wooden or plastic case
Min. Order: 10pcs
Transportation: airline or marine transport

Zhuzhou tongda has in tungsten carbide turning tool possession an advanced production line for manufacturing dies and moulds and a production line for post machined cemented carbide products. We can also supply tailor-made products of various specifications based on the requirements of our customers. Because of tungsten carbide turning tool high precision and high reliability, tungsten carbide inserts have been broadly used worldwide for significant productivity improvements.

Tungsten carbide has extremely high hardness and wear-resistivity compared with conventional steel materials, and it is expected that the tungsten carbide can be applied widely to dies and molds in the near future. In order to develop an efficient machining method of tungsten carbide for the dies and molds, series of cutting experiments were carried out to turn the sintered tungsten carbide materials with CBN tool. The selected sintered tungsten carbide work pieces are those containing tungsten carbide grains with mean grain size of 5µm, and 15wt%, 20wt% and 22wt% of cobalt binder. The sintered CBN tool selected contains super-fine grains of CBN with mean grain size of 1µm. The cutting speed was varied from 10m/min to 60m/min, and the tool wear and the surface roughness were measured. It is concluded that the tool wears less when cutting the sintered tungsten carbide containing larger amount of cobalt binder. The surface roughness of about 2µm in Rz is obtained.



Tungsten Carbide Turning Tool Feature
1. Long life
2. Good toughness and hardness
3. High precision
4. Working efficiency
5. Right hand and left hand available
6. Accessories with pretty good quality

The notable and rare combination of physical properties possessed by tungsten carbide makes it useful for a variety of applications. It is extremely strong and wear-resistant. There are only a few materials on earth that can be used to cut or engrave tungsten carbide, with industrial diamond abrasives being one of these. Its tensile strength is very high, but it is brittle under high pressures as a result. The melting point of tungsten carbide is also very high, at 5,200 degrees Fahrenheit.

We are recognized as a dependable name in this industry, involved in manufacturing and supplying the topmost range of Power Tools Carbon Brush. To engineered this Power Tools Carbon Brush, we have hired a team of professionals who extensively made by utilizing the best components and latest techniques. Also, they carry out various quality tests in order to ensure zero defects at the buyer's end. Our presented Power Tools Carbon Brush is applauded among the customers due to the product quality and durability.

KRD42 series double lift zero drop tester is mainly suitable for large size packaging products
to resist drop impact performance, its powerful power system and unique sample support for easy loading and unloading of oversized, overweight items, and automatically rise to the set height, complete the drop test.

Driven by pneumatic and servo motors, stable lifting process with upper and lower displacement restrictions, safe and reliable;
Adopt dual-track lifting method, and the height can be adjusted arbitrarily;
It can clamp and drop the test specimen in different directions such as edges, faces and angles;
The testing machine adopts PLC full-automatic control, large size true color touch LCD screen,
Hand-held pad human-computer interaction software, easy to operate.
The drop height is adjustable and the control is accurate up to 1mm
No special foundation required, no other complicated operation or installation

Technical Specifications
Model KRD42-500 KRD42-800 KRD42-1000 KRD42-2000
Max. Load (kg) 500 800 1000 2000
Drop Height (mm) 0-1200 0-1000 0-1000 0-800
Max. Specimen Size (mm) 14001400-1400 1500 1500-1500 1600-1600-1600 1800-1800-1800
Position Accuracy ±2% or ±10mm (subject to the larger value)
Drop Zone Size W*D/mm 2400-1600 2600-1700 2800 1800 3200-2000
Test Mode Face, Edge and Angle
Power 3-phase AC 380V ±10% 50Hz
Working Environment Temperature range 0-40, Humidity 80% (non-condensing)
Installation Condition Foundation-free, the cement floor shall be leveled and the working distance of 800~1000mm shall be reserved around the equipment
Standards ISO2248-1985(E) IEC68-2-27 ISTA