Where has holographic technology been successfully applied?

Laser holography is the most successful example of using the coherent characteristics of laser. As early as 1947, Hungarian Dennis? In order to find a new way to improve the resolution of microscope, Dr. Gabriel put forward the principle of * * * axis holography when studying light wave interference. However, because the coherence of available light sources at that time was not ideal, the development was extremely slow. After the appearance of laser, there was a revival upsurge in the field of holography. 1962, University of Michigan, emmett? Lisa and Julius. Yupenix made the world's first hologram with a laser. Where's Dennis Because of his sudden contribution to holography, Dr. Gabriel won the Nobel Prize in 197 1 24 years after the holographic theory was put forward. In recent years, due to the development of holographic theory, various technologies and devices for shooting and copying holographic images have emerged, which has led to the emergence of companies engaged in holographic photography and providing production services, and the application scope of holographic technology has also been expanding, becoming a new army in the optical field.

The advantage of holographic technology lies in its three-dimensional representation, which is another new carrier in the human information society, integrating high technology, visual art and practical value. Holograms are first selected by the advertising industry because of their novel form, bright colors, strong three-dimensional sense and large amount of information, which has great commercial value. So its earliest development was three-dimensional advertising and instructions.

A magazine cover that I can't put down.

1August, 992, on the cover of the fourth issue of Applied Laser magazine published in China, a 6×6 cm true-color relief hologram was posted, which was about a bunch of flowers inserted in a vase. Under the irradiation of ordinary incandescent lamp light, the reproduced image is clear and bright, and the color is pure, which makes readers eagerly watch and put it down.

Since 198 1 Japan first adopted holograms in measurement and control magazines, the 7th issue of British Photography Amateur Magazine of 1983 and the 3rd issue of National Geographic Magazine of 1984 followed suit, using holograms as magazine covers, and their circulation increased greatly. At present, hundreds of annual reports, magazine covers and illustrations around the world have adopted relief holographic technology. 1986 10, a company in London published a fairy tale "Mirror Stone" for the first time, with a holographic cover and holographic illustrations (***7 frames); 1988, another company introduced an almanac containing 13 holograms. Because of ingenious conception and exquisite printing, the combination of hologram and color painting gives people a novel beauty enjoyment.

With the introduction of computer holograms, some artificially imagined shapes can be represented by three-dimensional images and can be printed and copied in large quantities. The first embossed computer hologram is the cover of July 1988 Journal of Computer Image and Application. On the basis of PEXAR's computer drawing method for making thin-film iron toys, it realized the synthetic hologram of computer images for the first time, and the embossed hot stamping hologram was made by the banknote company, which opened readers' eyes.

Edible hologram

An American food manufacturer went one step further on the traditional seaside lollipop: printing holograms on candy. This stereoscopic image will not reduce the calorific value, and it is designed for ornament without any additives. Massachusetts Stereo Food Company has begun to study the possibility of printing holograms on food. Holograms need very precise thin lines, up to 1000 lines per millimeter. Researchers have found many materials for this purpose, including carbohydrates, sugar, plant resin, starch and cellulose. The company has successfully produced three-dimensional holographic images on chocolate candy.

It is made by dissolving a suitable material, such as carbohydrate or sugar, in a liquid and then dehydrating it in a drum. The inner wall of the barrel is engraved with grating structure as holographic auxiliary plate. When the coating of the barrel is completely dry, take it off and cut it into pieces. In this way, each piece is a hologram, reflecting light according to a rainbow pattern like a small prism.

The company plans to produce holographic chocolates and sweets with festivals, graphics and fonts. At that time, consumers will see a three-dimensional panoramic view of Paris on the snacks sold on the top of the Eiffel Tower. The company believes that the advantages of doing so are: first, it is unconventional and plays an advertising role; Second, the holographic embellishment of food is completely a physical skill, without any pigments and additives, and it is quite safe to eat. More importantly, through this technology, a new anti-counterfeiting method for edible items, such as expensive drugs, has been created. In other words, the same technology can also be used for pills and capsules, so counterfeiting becomes quite difficult and expensive. It is estimated that American pharmaceutical companies will lose $654.38+04 billion every year just because others plagiarize. If this technology is adopted, it is tantamount to increasing the company's income.

An advertisement to transport the building to the site for display.

The development of commodity economy has promoted the progress of material civilization in human society, in which advertising plays an important role. Various international trade fairs are good opportunities for enterprises to debut. Practice has proved that the effect of pictures, materials and videos is far less than that of advertisements displayed in kind. For example, at the famous Paris Aviation Expo and the Singapore Weapons Industry Exhibition, internationally renowned companies spared no expense to deliver goods across the ocean. But after all, the exhibition space is limited, and it is impossible to show all the samples of the products one by one. And some items can't be transported at all, such as real estate construction, and they can't be moved to the exhibition hall anyway. The emergence of laser holographic technology has easily solved this problem. For example, three famous American holographic picture manufacturers jointly produced a 34-inch × 72-inch synthetic hologram for the New England Development Company. This is a model of a large building structure, and its image shows not only the outside of the structure, but also its inside, and the two can be converted. Employers are very satisfied with this.

In western countries, holograms have become commodities, and their development also depends on market demand. At present, giant holography is mainly used for commercial exhibitions and exhibitions. Except for the immovable objects mentioned above, it can be applied to almost all places where advertisements can be used. One advantage is to increase the popularity of stalls or new products. A large-size hologram can stand out more clearly in many publicity images, and even achieve unexpected sensational effects; Second, it can provide a larger viewing angle and observation range, and can accommodate more information and greater depth of field, thus greatly enhancing the reproduction effect.

In some ways, holograms can even exceed the advertising effect of physical exhibitions, clearly showing the outline of a product or an idea concept. In particular, the display is not a physical product that has been produced, but only a design model or a design drawing (such as an image drawn by a computer), which can particularly display its functions. 1986, according to the new design idea, Toyota Company of Japan made a car model with a computer, and took a huge holographic picture, which made more people realize that holograms have such wonderful functions to replace objects and models. ADD company in the United States made a large three-dimensional computer hologram of a generator with computer graphics, which looks clear at a glance and is very suitable as a teaching tool.

Tell customers with images

Polaroid is unique in the application of holographic technology: the company sticks the hologram on a tape package, which plays a dual role: it shines, attracts customers and helps customers know how to use the product. This kind of medical adhesive tape is specially designed for nurses, and its packaging feature is that nurses can open this sterile adhesive tape without taking off their surgical gloves. The company's dream holographic display uses two hands to pull a piece of tape, slightly changing the viewing angle, and you will find that the image is moving: from one angle, the tape is opened and then closed at another angle. As the angle changes, the color of the image changes, from bright yellow to orange yellow to green, which makes people feel pleasing to the eye. The company claims that their purpose is to let customers know how to open the tape, because they are used to using ordinary tape, which can explain the usage more vividly than words.

Fashion with flowers on the chest

In recent years, the holographic stereogram has been significantly improved in image quality and color, and the effect is getting better and better, which has attracted people's attention. 1991April, at the international innovation exhibition held in Paris, France, the fashion with holographic diffraction foil as clothing was exhibited. British Space Age Company has developed a holographic woven fabric, which can be cut, sewn and cleaned by machines. Clothes, trousers, hats, jackets, shirts and even bikinis made of it have been sold in some shops in Britain, France, Germany and Spain. Clothing decorated with holographic diffraction foil will glow in the sun. When the angle of the observer or the angle and distance of the light source are appropriate, a flower or something will "float" on the wearer's chest or hat, giving people a novel feeling. This is another attempt to open up the application field of embossing holography.