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How a Camera Phone Works
Cameras have come a long way from the original Pinhole Camera invented in the 12th century by Ibn AlHaitham . One of the fastest growing and most popular cameras is the camera phone.
I am going to break the camera phone into three major parts:
The typical camera phone utilizes a fixed focus lens design. The lens assembly consists of several components,[url=http://www.floware.fr]michael kors femmes[/url], this can be seen in the figure on the left. The first part is the 3 element lens, which consists of 1 glass and 2 plastic elements. This is then followed by an IR filter, the IR filter blocks any light above 780nm. By removing the light above 780nm the sensor is able to only focus what the eye is able to see. The figure below is an assembled camera phone assembly from Largan. The typical optical properties of a camera phone lens are
Effective Focal Length (EFL) is 4.45
Eyeglass lenses are commonly made from plastic, including CR39 and polycarbonate. These materials reduce the danger of breakage and weigh less than glass lenses. Some plastics also have more advantageous optical properties than glass, such as better transmission of visible light and greater absorption of ultraviolet light.[1] Some plastics have a greater index of refraction than most types of glass; this is useful in the making of corrective lenses shaped to correct various vision abnormalities such as myopia, allowing thinner lenses for a given prescription.

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this and has announced the agreement. Analyst Su Lifeng to reporters provides a set of data: the published annual reports of listed steel enterprises in 2010 one quarter of the total sales gross margin was 8.18%,[link widoczny dla zalogowanych], 8.7% in the fourth quarter of 2009; published quarterly bulletin of the 27 steel prices in 2010 first quarter net profit was 130000000 yuan,[link widoczny dla zalogowanych], and the fourth quarter of 2009 to 160000000 yuan. The overall decline in industry profits.
in the actual cost is low,[link widoczny dla zalogowanych], steel prices this year have been in ore price is expected to rise risen by nearly 1000 yuan,[link widoczny dla zalogowanych], fulfilling expected ahead. Even so, a quarter of iron and steel industry average profit rate is still only 3.25%, this makes development of the next care-laden.
Listing Corporation quarterly data
in addition,[link widoczny dla zalogowanych], also notable is, although the industry in the first quarter year-on-year profits, but the chain fell 14.31%.
is the first comprehensive to.
a quarter on quarter profits have declined,[link widoczny dla zalogowanych], but in the two quarter, this trend may continue.
⊙ reporter Zhu Yuchen Qin Feifei, editor of Ruan Qi
industry after the two quarter fears more difficult
In the
first quarter profit is still low
in fact,[link widoczny dla zalogowanych], although the spot price of iron ore prices, but many steel enterprises in the first quarter before use or reserve, relatively low cost. According to the China Steel Association data, the first quarter of this year,[link widoczny dla zalogowanych], China imported iron ore comprehensive average price for 96.31 U.S. dollars / ton. Although compared to the same period last year rose 20.69%,[link widoczny dla zalogowanych], but still far below the present soaring to 190 dollars / tons of ore spot, also lower than some steel mills have accepted us $110 / ton (FOB) and Korea quarter price.
"in general, the iron and steel enterprises profitability have better, but the large and medium-sized enterprises in the first quarter profit is still at low level." CISA said. Although the first quarter profit rate than the annual average in 2009 increased,[link widoczny dla zalogowanych], but this figure is clearly not satisfied.
in the two quarter after the steel industry may face more serious crisis of profitability,[link widoczny dla zalogowanych].
the latest data show that, even in the iron ore is still in the relatively low cost, but the rising steel prices have again and again during the first quarter, the overall profit of China's iron and steel industry was only 3.25%. Next,[link widoczny dla zalogowanych], as the iron ore price rise factors comprehensively to appear in the two quarter, but the steel market is already weak consolidation, the steel industry is likely to face more serious profitability crisis.
iron ore price factor will appear in the two quarter, steel industry profits or facing crisis
industry information conference held yesterday, the Association announced the iron and steel industry in the first quarter of operating data. Data shows, this year first quarter, 77 large and medium-sized steel enterprises achieved sales revenues of 669455000000 yuan, representing year-on-year growth of 42.54%; to achieve profits of 21774000000 yuan, the profit rate is 3.25%.
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Shanghai City, jointly with the Municipal Commission of Commerce, the district actively implement measures, efforts to defuse the cabbage and other vegetables and seasonal varieties structural slow-moving problem.

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Fuzhou news network took tens of home media in their reports, the Hubei Yichang man Wang Yun said, their difficulties in looking for runaway daughter,[link widoczny dla zalogowanych], to the police for help and CDPF,[link widoczny dla zalogowanych], got everyone's sympathy and help. Did not expect the police to verify the information,[link widoczny dla zalogowanych], found that in addition to the name and address, he said everything is fake.
Wang Yun took "some Chutian Metropolis Daily" and other media to win the sympathy of
police found besides the name and address, this person said is lying
help: sitting in a wheelchair for daughter
police took the newspaper reports,[link widoczny dla zalogowanych], found above the man's daughter "the king Ruoxuan" in 2009 to run away,[link widoczny dla zalogowanych], the man sitting in a wheelchair after multiple city looking for daughter. The police had sympathy,[link widoczny dla zalogowanych], then contacted the Fuzhou media,[link widoczny dla zalogowanych], hope to help the man.
on the morning of 6,[link widoczny dla zalogowanych], Drum East police station to a man who was in a wheelchair. "The police comrades,[link widoczny dla zalogowanych], I'm from Wuchang to Fuzhou looking for runaway daughter, but the bank card degaussing, take no money,[link widoczny dla zalogowanych], and now I cannot eat the food." "The wheelchair man" edge to the on duty police for help,[link widoczny dla zalogowanych], out a stack of newspapers to the police,[link widoczny dla zalogowanych], said: "this report me".
Hubei a "wheelchair man" under the guise of tracing around Bo sympathy cheated money
looking for female looking for female, in fact is a fraud
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yesterday, love people and our reporter, condolences to the families. Among them, 15 households living in the family household will receive 800 yuan in cash and a bag of rice, a barrel of oil and a box of instant noodles, 17 other families will get rice and oil.