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OLYMPUS Patent all-in-focus macro technology


Olympus all-in-focus macro patent surfaced over the web, the new technology helps users to get more sharp and focused macro images of the subject,

Patent details

  • Patent Publication No. 2013-21407
    • 2013.1.31 Release Date
    • 2011.7.7 filing date
  • All-in-focus macro
    • Synthesizing a plurality of images with different focus positions
    • The change in image magnification is large, the step may occur in the image of the synthesized
  • Olympus patents
    • Ultra-deep mode (all-in-focus macro)
      • While maintaining the image magnification, we change the focus position
      • Obtain an image in focus throughout the image synthesis
    • Example 1: When the user closer to the subject the camera to shoot in a row
    • Example 2: After adjusting the focus position in the AF, adjust the magnification by zooming

Few days ago Casio announced Casio ZR1000, the camera features – Casio’s All-In-Focus Macro function that ensures well-focused photos by keeping every area of the shot in focus from close-up subjects to background scenery. + Buy Casio ZR1000 from Amazon

via-egami

Nikon Patent 58mm F1.4 Lens

Nikon 58nn F1.4 LensNikon Latest patent surfaced over the web for 58mm F1.4 Lens

Patent Details

  • Patent Publication No. 2013-19993
    • 2013.1.31 Release Date
    • 2011.7.8 filing date
    • JP 2013-19992 2013-19994 58mm F1.2, 58mm F1.4 and JP 2013-19993
  • Example 1
    • Focal length f = 58.0216mm
    • Fno. 1.450
    • Half angle of view ω = 20.82 °
    • Image height 21.6mm
    • Length 93.67772mm
    • BF 38.71868mm
    • Nine elements in 5 groups lens configuration
    • Two two-sided aspherical
    • Negative positive negative
    • Fed whole

Pentax Full-frame Camera Under Development

Pentax Full Frame

According to latest rumors surfaced over the web, Tokina employee confirms pentaxforums.com that Pentax is reportedly developing a full-frame camera and the according to the Tokina employee a prototype already exists and under testing.  Later on he also added that that all lenses developed will be re-branded under the Pentax name as it had been done in the past.

src – pentaxforums.com

Panasonic has doubled the sensitivity of color image sensors

Comparison of images using the same sensitive CCDs

Panasonic developed a new type of image sensor that donot uses color filters as of today CMOS/CCD sensor, development makes color filters unnecessary by using the micro color splitters that control thediffraction of light at a microscopic level. Panasonic has achieved approximately double the color sensitivity in comparison with conventional sensors that use color filters. see the press release below full details

Osaka, Japan – Panasonic Corporation has developed unique “micro color splitters”, which separate the light that falls on image sensors by exploiting light’s wavelike properties. Applying them to actual image sensors allows bright color images to be achieved even under low-light conditions. This development makes color filters unnecessary by using the micro color splitters that control thediffraction1 of light at a microscopic level. Panasonic has achieved approximately double the color sensitivity in comparison with conventional sensors that use color filters.

Image sensors are used in devices like smartphones, digital still cameras and video cameras, as well in security, vehicle parking, office, and healthcare applications – anywhere, in fact, that digital imaging is needed. Conventional color image sensors use a Bayer array2, in which a red, green, or blue light-transmitting filter is placed above each sensor. These filters block 50 – 70% of the incoming light before it even reaches the sensor. Progress is being made in increasing the resolution of image sensors used in mobile and other devices by reducing pixel size, but demand for higher-sensitivity cameras is also increasing. Panasonic has developed a new technology that can be applied to existing or future sensors to enable them to capture uniquely vivid color images.

The developed technology has the following features.

  1. Using color alignment, which can use light more efficiently, instead of color filters, vivid color photographs can be taken at half the light levels needed by conventional sensors.
  2. Micro color splitters can simply replace the color filters in conventional image sensors, and are not dependent on the type of image sensor (CCD3 orCMOS4) underneath.
  3. Micro color splitters can be fabricated using inorganic materials and existing semiconductor fabrication processes.

This development is based on the following new technology.

  1. A unique method of analysis and design based on wave optics that permits fast and precise computation of wave-optics phenomena.
  2. Device optimization technologies for creating micro color splitters that control the phase of the light passing through a transparent and highly-refractive plate-like structure to separate colors at a microscopic scale using diffraction.
  3. Layout technologies and unique algorithms that allow highly sensitive and precise color reproduction by combining the light that falls on detectors separated by the micro color splitters and processing the detected signals.

Panasonic holds 21 Japanese patents and 16 overseas patents, including pending applications, for this development.

This development is described in general terms in the Advance Online Publication version of Nature Photonics issued on February 3, 2013.

Constitution and features compared with the conventional method Constitution and features compared with the conventional method

More on the Technology

1. Unique method of analysis and design based on wave optics permitting fast and precise computation of wave-optics phenomena

FDTD5 is widely used to analyze light in wave form, but its heavy computation workload has up to now made it impractical for designing micro color splitters. On the other hand, BPM6 is an effective method of fast computation, but it has lower precision than FDTD and cannot accurately simulate color splitting. This prompted Panasonic to develop a practical and original design method that permits fast and precise computation of wave-optics phenomena. This technology allows the precise modeling of optical phenomena such as reflection, refraction, and diffraction by modeling spaces in regions with different optical constants and applying BPM to the spaces. This method can be applied not only to the design of micro color splitters, but can be extended to the design of other nano-scale optical processing systems.

2. Device optimization technologies leading to the creation of micro color splitters that control the phase of the light passing through a transparent and highly-refractive plate-like structure and use diffraction to separate colors on a microscopic scale

Color separation of light in micro color splitters is caused by a difference in refractive index between a) the plate-like high refractive material that is thinner than the wavelength of the light and b) the surrounding material. Controlling the phase of traveling light by optimizing the shape parameters causes diffraction phenomena that are seen only on a microscopic scale and which cause color separation. Micro color splitters are fabricated using a conventional semiconductor manufacturing process. Fine-tuning their shapes causes the efficient separation of certain colors and their complementary colors, or the splitting of white light into blue, green, and red like a prism, with almost no loss of light.

3. Layout technologies and unique algorithms that enable highly sensitive and precise color reproduction by overlapping diffracted light on detectors separated by micro color splitters and processing the detected signals

Since light separated by micro color splitters falls on the detectors in an overlapping manner, a new pixel layout and design algorithm are needed. The layout scheme is combined and optimized using an arithmetic processing technique designed specifically for mixed color signals. The result is highly sensitive and precise color reproduction. For example, if the structure separates light into a certain color and its complementary color, color pixels of white + red, white – red, white + blue, and white – blue are obtained and, using the arithmetic processing technique, are translated into normal color images without any loss of resolution.

Notes:

1. Diffraction
Behavior of light as a wave on the wavelength (nanometer) scale. Various phenomena occur when a wave encounters an obstacle.
2. Bayer array
The arrangement of color filters used in most single-chip digital imaging sensors used in digital cameras, camcorders, and scanners to create a color image. The filter pattern is 50% green, 25% red and 25% blue.
3. Charge Coupled Device Image Sensor (CCD sensor)
A type of solid-state image sensing device for digital imaging, used in digital video cameras of all types. It has higher sensitivity and lower noise than other sensing devices.
4. Complementary Metal Oxide Semiconductor Image Sensor (CMOS sensor)
A solid-state image sensing device for digital imaging using CMOS.
5. Finite-Difference Time-Domain method (FDTD)
FDTD is a versatile modeling technique used to solve Maxwell’s equations by spatial and temporal discretization.
6. Beam Propagation Method (BPM)
A numerical analysis technique in electromagnetics for solving the Helmholtz equation under conditions of a time-harmonic wave.

New 42.5mm F.95 Nokton for Micro 4/3

42.5mm F.95 NoktonVoigtlander exhibited New 42.5mm f/0.95 Nokton for Micro 4/3 at the CP + Show, take a look at the major features below

  • 23cm minimum focusing distance
  • 1:4 magnification ratio
  • No aspherical element

Expected to arrive at March 2013, no info about price available yet.

Via DC.watch

Panasonic exhibits Lumix G 42.5mm F1.2 and 150mm F2.8 Lumix G Lens

Panasonic added two new Lumix G 42.5mm F1.2 and 150mm F2.8 Lumix G lenses to the 2013 road-map and Both are also being showcased  at Japanese CP + show.

the equivalent focal length is 90mm F1.2 and 300mm F2.8 respectively, takea look at the roadmap below

Via DC.watch

Kipon Ibelux 40mm F0.85 lens for mirrorless cameras

Kipon Ibelux 40mm F0.85

The Ibelux 40mm f/0.85 lens surfaced over at CP+ show in Yokohama, Japan. Kipon in partnership with the German firm IB / E OPTICS have developed the new 40mm f/0.85 lens, in the image above the Ibelux lens is attached with Sony NEX camera, lens is expected to be released in July, 2013 with a price between ¥120,000 – ¥ 150,000 ($1,200-$1,600). The lens will be available in X mount (Fuji), M mount (Leica), Micro Four Thirds and Canon M mirrorless camera.

Via DC.watch