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Théâtre Optique

Théâtre Optique is a astronomy 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 Théâtre Optique rather than just read about it. In short: The Théâtre Optique (Optical Theatre) is an animated moving picture system invented by Émile Reynaud and patented in 1888. From 28 October 1892 to March 1900, Reynaud gave over 12,800 shows to a total of over 500,000 visitors at the Musée Grévin in Paris.

Théâtre Optique — main illustration
Théâtre Optique — illustration

Key takeaways

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

Reference excerpt

The Théâtre Optique (Optical Theatre) is an animated moving picture system invented by Émile Reynaud and patented in 1888. From 28 October 1892 to March 1900, Reynaud gave over 12,800 shows to a total of over 500,000 visitors at the Musée Grévin in Paris. His Pantomimes Lumineuses series of animated films include Pauvre Pierrot and Autour d'une cabine. Reynaud's Théâtre Optique predated Auguste and Louis Lumière's first commercial, public screening of the cinematograph on 28 December 1895, which has long been seen as the birth of film.

Technology

The realized films had 300 to 700 transparent pictures of successive phases of moving figures with black backgrounds. The pictures were hand painted by Reynaud in aniline inks directly on 6 x 6 cm gelatin plates. The plates were coated with shellac and framed in a cardboard strip of which the sides were clad in fabric bands attached with split pins. The horizontal film strip could be up to 50 meters long, with black leader tape at the beginning. Central perforations in the cardboard between the images engaged with metal notches protruding from a large central turning wheel. The wheel transferred the strip between two copper 25 cm spools. The film was guided further by pinch rollers at the corners of the table and passed in front of a magic lantern. The magic lantern projected each image in turn towards one of the 36 rectangular mirrors at the center of the turning wheel. Each image was in turn reflected to another mirror, which reflected it through a focusing lens towards a movable mirror. The movable mirror could be adjusted to project the moving characters at the desired place within an immobile background image on the screen. The background was projected with a second magic lantern from a painted glass plate. Reynaud would manipulate the speed of the film by hand and repeat movements to produce a visual story that could last longer than 10 minutes. The projectionist operated the machine behind the screen, with only the projection visible to the audience. Some synchronized sound effects were automated at key moments marked with silver tabs on the flexible band to activate an electromagnet. The magnet in turn triggered a buzzer, small drums or other acoustic devices. The 1888 patent covered the film band to be of indefinite length and of any material, opaque or transparent (the reflection of a brightly lit opaque picture could also be projected). The band could be fully flexible or only between the pictures. The pictures could be hand-drawn, printed or "obtained by photography from nature". The amount of praxinoscope mirrors could differ per model. Either a spool or the central wheel could be rotated by hand or a mechanical motor to move the film. illumination and optical arrangements could be made for either direct-viewing or for projection on a screen. In a prospectus Reynaud offered the Théâtre Optique in different versions and with separately available parts; one version came installed on an 80 x 100 cm mahogany table and another on a two part iron frame that could be stored inside two wooden boxes (85 x 85 x 25 cm). Copies of the three available films were offered in "special printing in color" (quote translated from French).

History

The Théâtre Optique was not the first occurrence of projected animation. Mechanical animation projections and other more primitive moving picture techniques had already been featured long before in visual storytelling in magic lantern shows, especially in phantasmagoria. However, this was not yet animation as we now know it: a rapid successive substitution of sequential images to create a lifelike moving picture. A few animation projectors had been available for a few decades using the stroboscopic effect invented with the phénakisticope, but these projected very short animation loops. The Théâtre Optique was a further development of the projection version of Reynaud's praxinoscope animation toy, which had already been covered in the first praxinoscope patent as registered on 30 August 1877. Reynaud in the 1888 patent: "The aim of the apparatus is to obtain the illusion of motion, which is no longer limited to the repetition of the same poses at each turn of the instrument, as is necessary in all known apparatus (Zootropes, Praxinoscopes, etc.), but Having, on the contrary, an indefinite variety and duration, and thus producing real scenes animated by unlimited development. Hence the name of Optical Theater given by the inventor to this apparatus" (translated from French). The term had been used occasionally for a theatrical variation of peep shows or dioramas with moving figures since at least the 18th century. In 1877, Reynaud had created the praxinoscope, an improvement of the zoetrope. The praxinoscope replaced the narrow viewing slits of the zoetrope with an inner circle of 12 mirrors (equal to the number of images), allowing a brighter and clearer view of the moving image. After Reynaud licensed his invention in 1877, it sold well in a number of the large Paris department stores. Reynaud applied for a French patent (Brevet d'invention N° 194 482) for the Théâtre Optique on 1 December 1888. On January 14, 1889, Reynaud received a French patent for the Théâtre Optique. He also received a British patent for the system on February 8. The system was displayed at the world's fair Exposition Universelle (May-October, 1889) in Paris. Reynaud tried to sell the system with his films between 1889 and 1892 and offered demonstrations at his address in Paris. When it didn't sell, he decided to exploit it with theatrical screenings in 1892.

La Nature No. 999 of 23 July 1892 featured an enthusiastic article about the Théâtre Optique. Gaston Tissandier described how it enabled uninterrupted projection of a considerable series of actions and wrote that Reynaud had composed very amusing scenes with characters "who engage in lively scenes and execute rapid movements of a charming effect" (translated from French). He sensed that the system provided new possibilities and thought it would undoubtedly have a future with photographed series of poses, when it would become technically and economically more feasible to produce photographic strips.

… excerpt ends here. Continue reading the full article.

Illustrations

Théâtre Optique: A performance of Pauvre Pierrot as imagined by Louis Poyet, published in La Nature in July 1892
A performance of Pauvre Pierrot as imagined by Louis Poyet, published in La Nature in July 1892
Théâtre Optique: 1888 patent illustration (top view): A=praxinoscope, B=axis, C=crown with protruding pins, D=reel drum with film, E=reel drum, F=flexible band, attached to drum E
1888 patent illustration (top view): A=praxinoscope, B=axis, C=crown with protruding pins, D=reel drum with film, E=reel drum, F=flexible band, attached to drum E
Théâtre Optique: 1888 patent illustration (side view): O=direct viewing position
1888 patent illustration (side view): O=direct viewing position
Théâtre Optique: Théâtre Optique advertisement bill, offering demonstrations daily between 2 and 5 (except Saturdays)
Théâtre Optique advertisement bill, offering demonstrations daily between 2 and 5 (except Saturdays)
Théâtre Optique: Poster by Jules Chéret, advertising Pantomimes Illumineuses at Musée Grévin
Poster by Jules Chéret, advertising Pantomimes Illumineuses at Musée Grévin

Worked examples

Example 1 — a first encounter with Théâtre Optique

Start with the simplest possible case. Write down what Théâtre Optique claims or describes in one sentence, then invent the smallest concrete situation in which that sentence is true. In astronomy, 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 Théâtre Optique 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 Théâtre Optique 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 Théâtre Optique

In research
Théâtre Optique appears in astronomy 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 Théâtre Optique 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
Théâtre Optique is common in secondary-school and first-year university syllabi. It links to neighbouring topics 1880s in French cinema, 1880s in Paris, 1880s in animation, so understanding it makes those chapters shorter.
In everyday life
Look for Théâtre Optique 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 Théâtre Optique in 20 minutes

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

Frequently asked questions

What is Théâtre Optique in simple terms?

The Théâtre Optique (Optical Theatre) is an animated moving picture system invented by Émile Reynaud and patented in 1888. From 28 October 1892 to March 1900, Reynaud gave over 12,800 shows to a total of over 500,000 visitors at the Musée Grévin in Paris.

Why does Théâtre Optique matter?

Because it connects several astronomy 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 Théâtre Optique?

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 Théâtre Optique.

Tags

  • 1880s in French cinema
  • 1880s in Paris
  • 1880s in animation
  • 1890s in French cinema
  • 1890s in Paris
  • 1890s in animation
  • Audiovisual introductions in 1888
  • Exposition Universelle (1889)
  • French inventions
  • Precursors of film

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