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June 2021
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News Headlines
Multan knocks Quetta out of PSL with 110-run win        WTC Final: Kohli eyes legacy, Williamson prize for consistency in battle of equals        India extends USD 100 million Line of Credit to Sri Lanka for solar energy projects        China successfully launches first crew to new space station        Biden, Putin discuss ambassadors, nuclear weapons and more        Pre-monsoon showers in national capital        Sonia taken Covid jabs, govt should inoculate all instead of creating non-issues: Cong        PM should acknowledge his mistakes, seek expert help to rebuild India: Rahul        PM invites world to invest in India        Yuvraj Singh becomes face of PUMA Motorsport in India        Dutee expects Olympics spot on basis of world rankings if not through qualification timing        India's fuel demand rebounds in June        Power consumption grows 9.3 pc in first half of June        UK expands COVID-19 vaccination drive to cover all over-21s        China says nuclear fuel rods damaged, no radiation leak        Tourists delighted after Taj Mahal reopens after two months        Odisha extends partial lockdown till July 1, opens borders with Chhattisgarh, Jharkhand        PM to launch customised crash course for Covid frontline workers        Unseeded Krejcikova wins maiden Grand Slam title in Paris        Diesel at Rs 100 mark in Rajasthan; Karnataka sees Rs 100/ltr petrol        
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Business News
Canon celebrates 50th anniversary of its first Interchangeable Lens for SLR
 
Kolkata: Canon announced today that this year marks the 50th anniversary of the release in 1971 of the FD55mm f/1.2AL, the company’s first lens for interchangeable-lens SLR cameras that employs an aspherical lens element.

Aspherical lens elements are not only used in the company’s interchangeable-lens SLR cameras, but also broadcast lenses, semiconductor lithography systems, telescope mirrors and a wide variety of optical products.

Aspherical lenses possess a curvature that are ideal for gathering light at a single point. From the f/2.8L IS USM zoom lens series for professional and enthusiast users—the RF15-35mm f/2.8L IS USM (released in September 2019), RF24-70mm f/2.8L IS USM (released in September 2019) and RF70-200mm f/2.8L IS USM (released in November 2019)—to the RF28-70mm f/2L USM (released in December 2018) which realizes a fast f/2 aperture across the entire zoom range, Canon’s aspherical lenses help reduce various types of aberration and achieve high image quality.

The inherent characteristics of spherical lenses result in the lens being unable to focus parallel
rays of light in their complete form at a single common point. Due to the lens’ spherical-shaped
surface, blurring of captured images—known as spherical aberration—and other optical
aberrations tend to occur in the captured image. In order to correct spherical aberration, multiple spherical lenses must be used and placed in a specific configuration.

However, thanks to their unique properties, the same results can be achieved using only a single aspherical lens. In 1963, Canon embarked upon a program of sophisticated lens research and development in order to develop this “dream lens” that could focus all incident light on a single
point and create a faithful, clear image.

In order to mass-produce aspherical lenses, Canon needed processing technology that was
precise to within less than 0.1 micrometers , as well as high-precision measuring devices that
could measure to within 0.01 micrometers. Through repeated cycles of design and processing
methods, the company finally succeeded in creating the technology needed to mass-produce
aspherical lenses. In March 1971, Canon’s first interchangeable-lens SLR camera employing
an aspherical lens was released—the FD55mm f/1.2AL.

Then, in 1973, Canon further enhanced the precision of its lens processing technology with
the development of the ALG-Z nanometer level ultra-high-precision aspherical lens grinder.
The next leap forward happened in 1985, when the company successfully implemented the
large-diameter glass mold (GMo) aspherical lens element into the New FD35-105mm
f/3.5-4.5 (released in December 1985), the world’s first interchangeable lens for SLR cameras
to include a GMo aspherical lens. Ever since, the technologies used to form and measure
aspherical lenses have played a vital part in Canon’s efforts to realize high-performance
lenses.

Going forward, Canon will continue to polish its optical technologies in order to create
products and technologies that help meet our customers’ wide-ranging needs.


India extends USD 100 million Line of Credit to Sri Lanka for solar energy projects
India's fuel demand rebounds in June
Power consumption grows 9.3 pc in first half of June
Diesel at Rs 100 mark in Rajasthan; Karnataka sees Rs 100/ltr petrol
Rupee slips 13 paise to 73.02 against US dollar in early trade
Disruption in operations may lead to demand uncertainty in home improvement categories: Asian Paint
Seven of top-10 most valued firms add over Rs 1.15 lakh cr to m-cap; RIL lead gainer
RBI projects retail inflation at 5.1 pc in FY22 on supply-side measures, monsoon
Mukesh Ambani draws nil salary
Urban Company raises USD 255 mn, valuation crosses USD 2.1 bn
Ashok Leyland expects plants to be operational only for up to 10 days in June
China's central bank tries to stop surge in currency's value
Google, Facebook updating website to reflect new grievance officer appointed under IT rules
SBI & IBA announces various support measures and launch of new loan products by all Public Sector Banks
Honda 2wheelers India resumes production at its plants across India in a phased manner
Working closely with Jio to build affordable smartphone: Google CEO Pichai
MakeMyTrip launches quarantine & isolation facilities across 12 cities
Gati to exit cold chain solutions biz; Q4 consolidated loss widens to Rs 173.40 cr
Multi-language voice assistants in Tata Motors cars
Apple CEO faces tough questions about app store competition
KERALA NEWS
Kerala govt orders SIT probe into ''illegal'' tree felling in Wayanad
 Thiruvanathapuram: In view of raging controversy over the alleged illegal felling and smuggling of c  
LDF govt hand in glove with timber mafias, alleges Union Minister Muraleedharan
COVID-19:Kerala reports 14,233 new cases, 173 deaths
16,204 COVID-19 Cases, 156 Deaths Reported In Kerala
INTERNATIONAL NEWS
China successfully launches first crew to new space station
 Beijing/Jiuquan, Jun 17 (PTI) China successfully launched its longest crewed space mission to date o
Biden, Putin discuss ambassadors, nuclear weapons and more
UK expands COVID-19 vaccination drive to cover all over-21s
China says nuclear fuel rods damaged, no radiation leak
NATIONAL NEWS
Pre-monsoon showers in national capital
 New Delhi, Jun 17 (PTI) Several parts of the national capital received light to moderate pre-monsoon
Sonia taken Covid jabs, govt should inoculate all instead of creating non-issues: Cong
Tourists delighted after Taj Mahal reopens after two months
Odisha extends partial lockdown till July 1, opens borders with Chhattisgarh, Jharkhand
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