On July 20th, Texas Instruments DLP Products Division displayed the latest affordable 3D projectors in Beijing. In addition, in order to meet the growing demand for projections in teaching and conferences, Texas Instruments DLP Products recently demonstrated the world's first high-brightness bulb-free data projector at the "InfoComm2009 Exhibition" in the United States. It is reported that the brightness of this product can be It reaches 1000 lumens and is suitable for small and medium-sized conference rooms with an area of ​​about 20 inches.
Light projection technology company Wavien has developed a new LED projection technology that uses a 50 watt white led light source to boost brightness to 200 ANSI lumens. The technology is mainly used in pico projectors and has begun mass production. The new technology can double the brightness of existing LED light source technology and reduce the cost of the projection light source. Wavien said they will not give up their efforts on led products, and next year they will launch products with brightness exceeding 300 ANSI lumens.
In the home theater market, Lixun's first high-definition LED home theater projector, the H9080FD, replaces the color wheel and projection bulb in a traditional DLP projector with the PhlatLight PT120 led chipset and the OSRAM REPCURF9030A drive component. Since there is no high heat problem of the projection bulb, it can be turned on and off like ordinary household appliances, without preheating and cooling, and the service life can reach more than 10 years.
In 2008, Optoma launched the world's first DLP pico projector equipped with LED tri-color light source output - PK-101, weighing only 80g (without battery), can be connected to mobile phones, MP4 and other multimedia devices, users can drink coffee Briefing presentations on the office and official vehicles.
Considering the needs of business and individual users, LED light source has begun to be applied to mini projectors and has become the ultimate device for digital lifestyle. It is only slightly larger than the palm of your hand. You can carry out various business presentations with you, or put them on your hands. A display terminal for home entertainment in the bedroom.
The Co-Al Co-doped Barium Titanate
Lead-free Piezoelectric Ceramics was successfully developed by Yuhai company
through repeated experiments. By Researching the influence of Co-Al Co-doping
on the structure and properties of Barium Titanate-based piezoelectric
ceramics, the formulation and preparation technology of Barium Titanate-based
piezoelectric ceramics were optimized. Yuhai`s BaTiO3 was prepared by conventional
solid-phase sintering method, with the piezoelectric constant d33 (>170pC/N),
dielectric loss tgδ≤0.5% and mechanical coupling coefficient Kp≥0.34.
Barium titanate lead-free piezoelectric
ceramics are important basic materials for the development of modern science
and technology, which was widely used in the manufacture of ultrasonic
transducers, underwater acoustic transducers, electroacoustic transducers,
ceramic filters, ceramic transformers, ceramic frequency discriminators, high
voltage generators, infrared detectors, surface acoustic wave devices,
electro-optic devices, ignition and detonation devices, and piezoelectric
gyroscope and so on.
Application: military, ocean, fishery, scientific research,
mine detection, daily life and other fields.
China Patent of Yuhai company`s BaTiO3
Chinese Patent No.: ZL 2011 1
0126758.6
Name: Lead-free Barium Titanate
Piezoelectric Material with Addition of Cobalt and Aluminum
Lead free piezo material BaTiO3
Lead-free Material
Properties
BaTiO3
Dielectric Constant
ɛTr3
1260
Coupling factor
KP
0.34
K31
0.196
K33
0.43
Kt
0.32
Piezoelectric coefficient
d31
10-12m/v
-60
d33
10-12m/v
160
g31
10-3vm/n
-5.4
g33
10-3vm/n
14.3
Frequency coefficients
Np
3180
N1
2280
N3
Nt
2675
Elastic compliance coefficient
Se11
10-12m2/n
8.4
Machanical quality factor
Qm
1200
Dielectric loss factor
Tg δ
%
0.5
Density
Ï
g/cm3
5.6
Curie Temperature
Tc
°C
115
Young's modulus
YE11
<109N/m3
119
Poison Ratio
0.33
Lead Free Piezoelectric Elements
Piezo Element,Piezo Ceramic Elements,Piezoelectric Ceramic,Pzt Tubes
Zibo Yuhai Electronic Ceramic Co., Ltd. , http://www.yhpiezo.com