Optical Devices

Ads by Google

Optical devices are the most fascinating of human inventions. These devices can process light waves so that it can capture, enhance, measure and even magnify images for appropriate more accurate viewing. Welcome to IitsNoIllusion.com.

The first ever optical devices used are telescopes and microscopes. However, as the years passed, the Great improvements and developments lead to more inventions and discoveries. Binoculars, cameras and camcorders are mobile optical devices that we use in our everyday lives; they capture exact images, the images that our eyes can see and the images our eyes can’t see.

Nowadays, modernized versions of optical devices are flooding the market. From manual to automatic and now digital: optical devices have come a long way and are serving their purposes well. Almost all kind of optical devices are now digitalized. The cameras, camcorders and binoculars and telescopes are the most popular of all. This is because we have encountered and used these gadgets in our everyday lives.

Digital Cameras are used to capture still photos and record low-resolution videos using electronic image sensor. These gadgets work the same way as the film cameras. However their inner working is more electronics than chemical. Digital cameras are also battery operated just like the ordinary film cameras, though they use flash memory to store images and videos. They also have Lcd Screen that serves as electronic image viewfinder. Average users may not know it but there are 7 types of digital cameras: compact, bridge, single lens reflex camera, interchangeable lens, rangefinders, line-scan system and integration digital camera.

• Compact digital cameras are small, compact and convenient for everyday use. These can store JPEG images into flash memory. These are the Type of digital camera that we often used and more familiar with.
• Bridge digital camera on the other hand is more on the higher end type. This looks like a Dslr Camera but has greater features. It uses high quality Lenses for greater zoom range, faster aperture and greater image format.
• Single lens reflex cameras are cameras use by professional photographers. These have unique viewing system, have larger sensor than any other camera type and provides superb low-light performance. Digital single lens reflex (DSLR) camera uses interchangeable lenses and focal plane shutter.
• On the other hand, interchangeable lens camera is a newer and improved version of DSLR. It combines the great features of the other digital cameras like the live preview of compact cameras and the large sensor and interchangeable lens of DLSR.
• Digital rangefinders are those used by outdoor photographers. They can capture images even in the distance using acoustic or electronics techniques.
• Line scan system digital cameras use line-scan image sensor chip and focusing mechanism. These type of cameras are used for industrial settings.
• Integration digital cameras and cameras built in into other devices such as mobile phone, laptops, PDAs and digital camcorders. They can store compact JPEG images and is the most convenient and the easiest to use of all digital camera types. Integration digital cameras were first introduced in Japan in 2001.

The top rated digital cameras are produced by manufacturers such as Canon, Kodak, Sony, Panasonic, Nikon, Leica and more. But out of all the digital cameras in the market the best digital cameras and probably the most popular are Canon Eos 5D Mark II, Nikon D5000, Canon Powershot S90, Panasonic Lumix DMC-GF1 and Kodak Easyshare Z915.

Another kind of digitalized optical device is the Digital Camcorder or Video Camera recorder. It is a type of integration digital camera and has developed a wide following. Older version of camcorders uses video tapes to store and record videos; however digital camcorders use flash memory, which can store different file format like MPEG-1, MPEG-2 and/or MPEG-4. It has LCD image viewer and uses Rechargeable batteries. Today’s most popular camcorder is the DVD-video camcorders.

DVD stands for Digital Video Disc and the there are camcorders used to record this type of video format; it is called the DVD-Video Camcorders. End products can be played through ordinary DVD home players. This is one of the best selling camcorders around because it is easy to utilize and very user-friendly. DVD videos camcorders come in three different types HD camcorders, professional camcorders and the handy mini-HD camcorders.

• HD camcorders are small, compact and very convenient. It is super light and cheaper too. This type of camcorders is almost of the same size as the film camcorders. However video quality is as Good but not greater than those capture using the professional camcorders. Popular brands of HD camcorders are Canon and Sony
• Professional digital camcorders are those used in industrial set up such as in movies and videographers’ studios. This camcorder produces high quality videos, although it is a little bulky and heavy due to its body jam-packed with great features and world class components. Well known manufacturers and brand of professional camcorders are Panasonic and Canon.
• Handy mini-HD Camcorders on the other hand are ultra slim and small; almost of the same size as your mobile phone. This also comes with dirt-cheap tag prices and with the low resolution video quality it produces, you will understand why. Famous brands of mini-HD camcorders are Flip and Kodak.

Digital binocular with camera is another optical device that is very useful and handy; since exploring outdoors is one of the most popular activities fro today’s generations. Binoculars with digital cameras can help you see wonderful views closer and at the same time capture still photos or record VGA video formats. The photos and videos are then store in the flash memory so you can upload it to your computer and send it to your friends and family. Digital binoculars are battery operated and has LCD electronic image viewer for easier more comfortable purposes. Popular brands and manufacturer of binoculars with digital cameras are Bushnell, Barska, Konus, Galileo and Celestron.

Another popular and widely-used optical device is the astronomical telescope. By using this optical device you will not only see far subjects but super-far astronomical subjects like the heavenly bodies surrounding the Earth. Astronomical telescope gathers light, magnify it, refract/reflect it and produces its replicated image. There are three types of astronomical telescope; refractor, reflector and Catadioptric telescope.

• Refractor telescope uses lens in gathering light and focusing it in one direction. Old models of telescope use this same philosophy. However due to the nature of light waves, refractor telescope produced images with chromatic aberration.
• Reflector telescope, on the other hand uses mirrors instead of lens. It has a parabolic shape and an open end so it requires frequent instrument cleaning. Reflector telescopes produced much better image results thus it is commonly use for modern research
• Catadioptric telescope is a hybrid type. It combines the philosophy of refractor and reflector telescope. These are used for photographic purposes; capturing images of different heavenly bodies.

Since astronomical telescope are bigger it commands higher price tag. Well known manufacturers and brands of astronomical telescopes are Orion, Zhumell, Meade, Celestron, Bushnell, Tasco and Takahashi.

Home | Contact | Privacy | T & C | They Love Optical Devices