physics

Tamron

Tamron is a physics topic covered in the lgStudy science library. This page brings together a partial reference excerpt, illustrations, worked examples, real-world applications and a short study plan, so you can understand Tamron rather than just read about it. In short: Tamron Co., Ltd. (株式会社タムロン, Kabushiki-gaisha Tamuron) is a Japanese company manufacturing photographic lenses, optical components and commercial/industrial-use optics.

Key takeaways

Tamron belongs to physics; place it in that map before memorising details.
Learn the definition first, then one example that makes the definition concrete.
Connect Tamron to a quantity you can measure, compute or draw — that is where exam questions come from.
Reproduce the core statement of Tamron from memory before moving on to harder problems.

Reference excerpt

Tamron Co., Ltd. (株式会社タムロン, Kabushiki-gaisha Tamuron) is a Japanese company manufacturing photographic lenses, optical components and commercial/industrial-use optics. Tamron Headquarters is located in Saitama City in the Saitama Prefecture of Japan. The name of the company came from the surname of Uhyoue Tamura who was instrumental in developing Tamron's optical technologies. It was only on the company's 20th anniversary that the name was changed to Tamron (from Taisei Optical). In the fiscal year ending 31 December 2017, net sales totaled 60.496 billion yen and operating income was 4.24 billion yen, up 79.8% from 2016. At that time, the consolidated company had 4,640 employees and five production plants: in Hirosaki, Namioka and Owani in Japan, and one in China and Viet Nam, respectively. Subsidiary companies were located in the U.S., Germany, France, Hong Kong, Shanghai, Moscow and Haryana, India. Sony is a major shareholder in the company, with a 15.02% stake as of 2024.

History

1950 November – Taisei Optical Manufacturing Company founded, to manufacture lenses for cameras and binoculars. 1952 October – Taisei Optical Industries established with a capital of 2.5 million yen. 1958 – ‘Tamron’ trademark registered. 1970 April – Trade name changed to Tamron Co., Ltd. 1979 April – Tamron Industries, Inc. (presently Tamron USA, Inc.) established in New York City. 1982 September – Tamron Vertriebs GmbH established in Germany. 1984 February – Optech Tamron Co., Ltd. is established in Namioka, Aomori Prefecture. 1984 August – Shares listed with Japan Securities Dealers Association (currently JASDAQ) in Tokyo for over-the-counter transactions. 1985 December – Tamron Fine Giken Co., Ltd., a plant for making precision metal molds is established. 1986 January – Injection molding plant is established in Owani, Aomori. 1991 June – Optech Tamron Co., Ltd., is absorbed by Tamron Co., Ltd. 1995 February – Tamron acquires 75% capital of Bronica Co., Ltd., entering into the medium-format camera business 1995 April – Tamron (UK) Ltd. is established in the U.K. 1997 May – Tamron Industries (Hong Kong) is established in Hong Kong. 1997 July – Tamron Optical (Foshan) Co., Ltd. is established in Foshan, Guangdong, People’s Republic of China. 1998 July – Bronica Co., Ltd. is merged into Tamron Co., Ltd. 2000 June – Tamron Fine Giken is merged into Tamron Co., Ltd. 2000 June – Tamron France EURL is established in France. 2005 October – Tamron Optical (Shanghai) Co., Ltd. is established in Shanghai, People’s Republic of China. 2006 November – Tamron listed on the 1st Section of the Tokyo Stock Exchange. 2008 May – Tamron Co., Ltd. Taiwan manufacturing factory opened in Tainan, Taiwan. 2009 July – Tamron Co., Ltd. India Liaison Office opened in Haryana, India. 2009 November – Tamron Europe GmbH. Moscow Representative Office opened in Moscow, Russia. 2013 June – Tamron India Pvt Ltd.opened in Haryana, India. 2016 – Sale of compact camera lens modules began. 2017 – Sale of drone camera lens modules began and Tamron acquired Toumeigiken Co.

Products

Photographic lenses

Tamron has sold more than 5 million lenses as of September 2014. In the 2017 fiscal year, such lenses accounted for 74.9% of all sales.

Interchangeable lenses for digital and conventional SLR cameras, including compact high-ratio zoom lenses of which Tamron was the pioneer in 1992 when it released the 28–200 mm. The most-current lens of this type is the AF 16–300 mm F/3.5-6.3 Di II VC PZD MACRO. Tamron was the maker of the manual-focus Adaptall series which have interchangeable mounts for multiple camera brands. These replaced an older series of interchangeable mount lens, the Adaptamatic lenses, which offered less functionality. Tamron was also responsible for the development of the t2 or T-mount adapter system. Fixed-focal wideangle, telephoto and macro lenses; Zoom lenses of various focal length ranges; Teleconverters.

Optical components Camcorder lenses Digital still camera lenses Cellular phone camera lenses

Commercial and industrial-use optics CCTV camera lenses for Surveillance Industrial vision Image-processing Projection lenses, test plates, high precision molds, injection-molded parts & components, optical device units, etc.

List of photographic lenses Most current Tamron lenses are available for Sony E-mount, Nikon F-mount, and Canon EF-mount.

Designations Overall/General

SP — ‘Super Performance’, professional lenses Di — ‘Digitally Integrated’, featuring coating optimized for digital SLRs, but still usable on 24×36 mm sensors (35 mm, ‘full’ or double frame) Di II — Lenses for APS-C sized sensors only Di III — Lenses for compact system cameras ZL — ‘Zoom Lock’ Optical technology

ASL — hybrid ‘ASphericaL’ elements GM — ‘Glass Molded aspherical’ elements XGM — ‘eXpanded Glass Molded aspherical’ elements LD — ‘Low Dispersion’ elements XLD — ‘eXtra Low Dispersion’ elements XR — ‘eXtra Refractive index’ glass UXR — ‘Ultra-eXtra Refractive index’ glass AD — ‘Anomalous Dispersion’ elements LAH — ‘LD + ASL’ hybrid lens element ADH — ‘AD + ASL’ hybrid lens element HID — ‘High Index, High Dispersion’ glass [IF] — ‘Internal Focusing’ Coating technology

BBAR — ‘Broad-Band Anti-Reflection’ coating BBAR-G2 — ‘Broad-Band Anti-Reflection Generation 2’ coating eBAND — nano-structured ‘Extended Bandwidth & Angular-Dependency’ coating AX — ‘Anti-reflectioneXpand’ coating FLR — ‘FLuoRine compensation’ coating Autofocus/Electronic technology

… excerpt ends here. Continue reading the full article.

Illustrations

Worked examples

Example 1 — a first encounter with Tamron

Start with the simplest possible case. Write down what Tamron claims or describes in one sentence, then invent the smallest concrete situation in which that sentence is true. In physics, the smallest case is usually a single object, a single equation or a single measurement. Check that every symbol or term in your sentence has a meaning in that case.

Example 2 — changing one variable

Take the situation from Example 1 and change exactly one quantity: double it, halve it, or set it to zero. Predict what should happen to Tamron before you calculate. Comparing your prediction with the result is the fastest way to find out whether you understand the idea or only the words.

Example 3 — an exam-style question

Typical questions about Tamron ask you to (a) state it precisely, (b) apply it to given data, and (c) explain a limitation. Practise writing all three answers in under five minutes; the third part is what separates a full-mark answer from an average one.

Applications of Tamron

In research: Tamron appears in physics research whenever the underlying quantities have to be modelled precisely. Papers usually cite it as a starting assumption and then explore where it breaks down.
In technology and industry: Engineering practice reuses Tamron in design rules, simulations and safety margins. Knowing the idea lets you read a specification sheet and understand why the numbers look the way they do.
In the classroom: Tamron is common in secondary-school and first-year university syllabi. It links to neighbouring topics 1980s initial public offerings, Companies based in Saitama Prefecture, Companies listed on the Tokyo Stock Exchange, so understanding it makes those chapters shorter.
In everyday life: Look for Tamron outside the textbook — in sport, cooking, traffic, electronics or the sky above you. An example you found yourself is remembered far longer than one you were given.

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How to study Tamron in 20 minutes

Read the reference excerpt below once, without taking notes.
Close the page and write down what Tamron means in your own words.
Compare your version with the excerpt and mark what you missed.
Work through the three examples above with pen and paper.
Explain Tamron out loud to somebody else — or to Teacher Smith in the lgStudy chat.

Frequently asked questions

What is Tamron in simple terms?

Tamron Co., Ltd. (株式会社タムロン, Kabushiki-gaisha Tamuron) is a Japanese company manufacturing photographic lenses, optical components and commercial/industrial-use optics.

Why does Tamron matter?

Because it connects several physics ideas at once: it gives you a definition you can apply, a quantity you can calculate, and a way to check whether a result is plausible.

How should I study Tamron?

Read the excerpt, restate it from memory, then work through the examples and applications listed on this page. The five-step study plan above takes about twenty minutes.

What does this page cover?

It gives you a compact reference excerpt plus original lgStudy explanations, examples, applications and study material on Tamron.