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By admin, on July 8th, 2012
New new Canon 24-70mm F2.8 IS Lens Patent surfaced over the web today, So the upcoming 24-70mm Lens will have IS but the latest announced 24-70mm F2.8L II lens is still unavailable to users and expected to arrive at stock till september 2012, canon is doing some final changes in the lens before it goes in the production line,
 Translated by Google
Self-interpretation and summary, Patent Document
- Patent Publication No. 2012-123156
- 2012.6.28 Release Date
- 2010.12.8 filing date
- Example 1
- Zoom ratio 2.46
- 68.99mm – f = 28.00 focal length
- Fno. 2.88
- 17.41 deg – 37.69 half angle of view.
- Image height 21.64mm
- 222.38mm – 192.25 full-length lens
- BF 39.98 – 53.68
- Effective diameter 74.47mm ball before
- Effective diameter aperture 31.23mm
- 19 sheets 12 group lens configuration
- Three three aspherical surface
- 2 UD glass sheet
- Example 2
- Zoom ratio 2.86
- 68.70 – f = 24.00 focal length
- Fno. 2.88
- 17.48 deg – 42.03 half angle of view.
- Image height 21.64mm
- 224.86mm – 191.93 full-length lens
- BF 39.85 – 55.68mm
- Effective diameter 77.29mm ball before
- Effective diameter aperture 32.58mm
- Lens Construction 12 group 21 sheets
- Three three aspherical surface
- 2 UD glass sheet
- Five-group zoom positive and negative positive positive and negative
- (For Focusing group 2) Inner Focus
- (Part 1 of the fourth lens group, anti-vibration unit is L4a) image stabilization
- Positive refractive power of the first lens group
- The aberration can be corrected and weaken, the lens is larger
- Difficult to correct aberration and strengthen
- The amount of movement of the second lens group and one, the first
- Must be strengthened to reduce power and refraction, aberration correction is difficult
- Diameter of the first lens group becomes larger and more
via egami
By admin, on May 12th, 2012
 Actuator capable of moving in the direction of the imaging element XYθ Canon patent a new sensor shift technology that will help the sensor to move with celestial object. The main objective is to capture clear night-sky / stars image without blurring them, this technology will be used in future with modified version of a camera built for astronomers (like Canon 60Da)
Patent Details
Self-interpretation and summary, Patent Document (translated by google)
- Patent Publication No. 2012-89960
- 2012.5.10 Release Date
- 2010.10.18 filing date
- Astronomical shooting
- When you shoot the valve, the star without being a point image, draw a light trail
- Equatorial
- By shooting with the equatorial tracking of the expression, get the point image
- Equatorial is a large-scale equipment has become
- Image synthesis formula
- By shooting multiple times to shift the image synthesis, Hoshino photo to obtain
- Not only part of the image can be used
- Canon ‘s patented
- (Sensor shift Shake Reduction formula body / li camera shake correction in)
- Imaging element can be moved in the direction of XYθ
- Angular rate sensor ( gyro (gravity sensor) has been incorporated), an acceleration sensor
- Carried out in two stages of preliminary shooting shooting and production
- Preliminary shooting
- Do bulb exposures
- Analyzing the image, get the location of the center of rotation of the diurnal motion of the star
- Production shooting
- Do bulb exposures
- By moving in the direction of XYθ the imaging element according to the movement of the subject, obtain an image without blurring
How stuff work? See the Image below
The system look similar to Pentax ASTROTRACER function, The O-GPS1 When mounted on the PENTAX K-5 or K-r camera body, the O-GPS1 provides couples the unit with the camera’s SR (Shake Reduction) system for the effortless tracing and photographing of celestial bodies. The unit calculates the movement of stars and other objects using the latitude obtained from GPS data and the camera’s alignment data (horizontal and vertical inclinations and direction) obtained from the unit’s magnetic and acceleration sensors. It then shifts the camera’s image sensor in synchronization with the movement of these objects. This means that all celestial bodies are captured as solid points rather than blurry streaks, even during extended exposures.
via – egami
By admin, on March 27th, 2012
Canon 2.8X Teleconverter Patent surfaced today, but the bad news it if you attach 400mm F2.8 lens with 2.8x Extender, Canon EOS 1DX/5D3 DSLR AF will not work, So after this patent we may see a Firmware Update Soon to fix 1DX and 5D3 F8 issue.
EOS1D4 (APS-H) + 400mm F2.8 + Extender 2x = 1040mm (35mm equiv.) F5.6
EOS1DX (Full-size) + 400mm F2.8 + Extender 2.8x = 1120mm F8
Patent details (translated by google)
Self-interpretation and summary, Patent Document
- Patent Publication No. 2012-47869
- 2012.3.8 Release Date
- 2010.8.25 filing date
- Example 1
- -83.98mm focal length
- Expansion rate β = 1.996
- Lens Construction 5 group nine
- Example 3
- -41.91mm focal length
- Expansion rate β = 2.779
- Lens Construction 5 group nine
- Canon’s patent
- Rear converter is to increase the focal length, F number, the residual aberration
- When doubled, twice the lateral aberration, longitudinal aberration is 4 times greater rate of expansion, because the F-number is also double, longitudinal aberration is twice per depth of focus
- Rear converter configuration consisting of three groups of positive and negative positive
- Reduce the aberration of the rear converter itself
via – egami
By admin, on January 23rd, 2012
Canon patent a large size ( APS-C or APS-H ) back-illuminated CMOS sensor, also known as backside illumination (BSI or BI), BSI sensors capture more light and gives better low light performance than the ordinary CMOS sensors.
Patent details / Translated by google
Canon is back-illuminated imaging device (BSI) to produce false signals (noise) to remove the patent is pending. APS-like noise becomes noticeable at least an imaging device C, you can solve various problems, APS-I may be back-illuminated imaging device is adopted in full size, and C.
Patent literature, self-interpretation and summary
- Patent Publication No. 2012-15275
- 2012.1.19 Release Date
- Filing date 2010.6.30
- Back-illuminated imaging device
- The two bonded substrates photoelectric conversion unit and the peripheral circuit manufacturing to
- Photoelectric conversion unit and the peripheral circuitmicroprocessor which is connected by bump
- The incident light is changed and the current strong influence to adjacent pixels in the peripheral circuit, and noise (similar to a smear phenomenon).
- Canon’s patented
- And a peripheral circuit connected to a DC power supply photoelectric conversion unit
- Resistance is lowered, reducing the voltage drop
news src – egami
By admin, on December 17th, 2011
List canon patent prime lenses published by egami, details and image are listed below,
List of patent canon lenses
- Canon 85mm F1.2 IS
- 85mm F1.8
- 100mm F2.0
- 135mm F2.0
- 200mm F2.0
- 50mm F1.4
Patent literature, self-interpretation and summary (translated by google)
By admin, on June 12th, 2011
 Canon New Lenses Patent Details
(Translated by google from Japanese)Canon applied for a patent of 50mm F2.8, 90mm F2.8 and 35mm F2.8 lenses for full frame format. The 50mm F2.8 is macro lens, and maximum reproduction ratio is 1:1. The 90mm F2.8 is Tilt-shift Lens, maximum reproduction ratio is 1:2. The 35mm F2.8 Lens is semi-macro, maximum reproduction ratio is 1:2.
Patent Publication No. 2011-107313
- 2011.6.2 Published
- 2009.11.16 filing date
Nikon New Lenses Patent Details
(Translated by google from Japanese)Nikon applied for Full frame and mirrorless lenses, we can expect a new mirrorless camera from Nikon very soon.
Nikon 10-30mm 7-13mm lens for mirror-less patent , Nikon 10-30mm (28-80mm equivalent) 7 and-13mm (18-34mm equivalent) of the mirror lenses for less patent is being filed by Nikon for mirrorless system.
Patent Publication No. 2011-107267
- 2011.6.2 Published
- 2009.11.13 filing date
 New Nikon 50mm F1.2 patent for FX (Full-fame )camera and 50mm f/2.0 for DX format camera
Nikon 50mm f/1.2 and 50mm f/2.0 patent is being filed by Nikon. The new patent have more improved design and optical coatings, flares resistant and ghost resistant compared to older Nikon Lenses.
Patent Publication No. 2011-113052
- Published 2011.6.9
- Filled 2009.11.30
(Translated by google from Japanese)Sony 50mm F1.2 50mm F1.4 and the patent is being filed. 50mm, not a lot of configuration to be adopted Daburugausutaipu lens configuration by the sum of the telephoto lens in Daburugausutaipu Wide Converter, improved performance of the lens at close range. α mount products like it is going to be good at convincing users.
Patent Publication No. 2011-107450
- 2011.6.2 Published
- 2009.11.18 filing date
src – egami
By admin, on March 20th, 2011
 An type EF adapter appears in a Canon patent, this may be First Canon Mirrorless Related Patent?
Patent details(translated from japanese)
Publication number Patent – 2011-53437 (P2011-53437A)
Release date March – 17, 2011 (2011.3.17)
Title of invention Lens adapter apparatus and system
read more at egami
Canon Europe on canon mirrorless system camera “Canon doesn’t need to introduce a mirrorless compact system camera ”
Canon doesn’t need to introduce a mirrorless compact system camera (CSC), according to the head of consumer imaging in Europe, as the company does not have a problem selling its existing compact and DSLR products. In an interview with Amateur Photographer, Rainer Fuehres said that compact system cameras have been introduced by manufacturers that find it difficult to compete in the digital SLR market.
Read the full interview at AP
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