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Canon Patent - Canon EF-S 18-55mm IS III Kit Lens With Display Screen

TNC EXCLUSIVE Well have already seen Canon 55-200mm lens patent, Yes they are developing a new Zoom lens for Canon APS-C models. And now we have found a new 18-55mm F3.5-5.6 Kit Zoom lens patent that clearly shows Canon is also working on a new kit Zoom Lens with improved AF performance and overall design of the lens.

The new lens also features a dedicated DISPLAY SCREEN as we have seen in patent Image.  First time on internet – You are looking at the patent image of Canon next 18-55mm Kit lens with display screen

Patent Details of Canon 18-55mm IS III Lens

PROBLEM TO BE SOLVED: To provide an interchangeable lens which prevents an image having many aberrations unintended by a photographer from being photographed when attached to an aberration correction incompatible camera in an aberration correction compatible lens. An interchangeable lens detachably mountable to a camera body includes a communication unit for communicating with a camera, a camera identification unit for detecting whether or not a camera mounted on the camera is an aberration correction compatible camera, and a camera identification unit And when the camera is identified as a camera, the camera is in a photographing impossible state. BACKGROUND OF THE INVENTION

Reference numeral 301 denotes a manual zoom ring, reference numeral 302 denotes a manual focus ring, reference numeral 303 denotes an AF / MF changeover switch, reference numeral 304 denotes an IS ON / OFF switch, and reference numeral 305 denotes a lens information display portion.

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Canon to Improve Heat Insulation of Lenses to Prevent Overheating

 Heat-insulation.

TNC Exclusive: Its has been seen that optical performance of lens is reduced with respect to change in temp. In general when lens is being used by photographers in  direct sunlight for hours the temperature inside the lens is raised and which affects the overall optical performance of the lens. Latest patent suggest that Canon wants to improve the heat insulation coating over its high-end lenses to prevent overheating of lenses.

more patent

Canon to improve heat insulation of following lenses mentioned in the patent document

  • Canon EF 300mm f/2.8L IS USM II
  • Canon EF 400mm f/5.6L USM Lens
  • Canon EF 500mm f/4L IS II USM Lens
  • Canon EF 800mm f/5.6L IS USM

Patent Details (Translated from Japanese)
A possible to obtain a lens device change in optical performance is reduced relative to a temperature change in the ambient. In the lens apparatus having an optical system including an A positive lens Gp, the material of the positive lens Gp is ​​set properly, the exterior member 7 of coupling mechanism which protects the holding member 6 and the holding member 6 for holding the positive lens Gp the set properly. .Field

The present invention relates to a lens holding mechanism in the lens unit and an imaging apparatus having the same.

Lens apparatus such as an interchangeable lens for use in a digital still camera is used in various environments. For example, when the lens device is used in high temperature environment, the temperature of the lens included in the lens unit is increased, the optical properties of the lens may change.

References 1, by disposing the heat insulating member between the light source and the lens unit, discloses an optical apparatus employing the heat that is not easily transmitted configuration from the light source to the lens barrel.

Also see – Canon Working on Hybrid Viewfinders For DSLRS

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Canon Working on Hybrid Viewfinders For DSLRS

 

Canon is working on to improve the DSLR viewfinder by adding a extra layer Hybrid EVF over it. Adding a extra layer of Hybrid EVF will going to solve all the problems associated to the optical viewfinder in the current generation of DSLR camera.

Advantage of Having Hybrid Viewfinder in DSLR camera

  1. In general the DSLR viewfinder become dead  while you are recording a video, because the mirror is flipped up and the DSLR sensor on work, so at that moment the optical viewfinder becomes inactive. One of the biggest advantage include Hybrid viewfinder, is that you can use it while you are creating video from your DSLR.
  2. Introduction of Global shutter in DSLRs, after adding hybrid EVF for DSLR maker it will become easy to go beyond 20FPS or even more than that while keeping your viewfinder active. Since, the flipping Mirror do have limited physical speed and once they reach physical limit it is not possible to use global shutter with optical viewfinder.

Also see – Canon working on Light field camera

take a look at the DSLR viewfinder patent details

canon hybrid viewfinder

Patent Details – Canon Hybrid Viewfinder – Translated from google

The present invention relates to a camera viewfinder, and more particularly to a single-lens reflex camera having a function of both the electronic view finder optical viewfinder (OVF) (EVF)

PROBLEM TO BE SOLVED: To solve problems of an increased size, a complicated mechanism and the like of a camera employing a viewfinder device allowing switching between an optical viewfinder (OVF) and an electronic viewfinder (EVF).SOLUTION: A main mirror (4) that directs a subject image from a lens (2) to a viewfinder and performs reciprocating revolving movement between a subject observation position and an image pick-up position in which an image pick-up device (17) receives light of the subject image from the lens (2) is configured to have both a display function (6) to display, e.g., an image picked up by the image pick-up device (17) and a mirror function to direct the subject image to the viewfinder, thereby realizing: an OVF mode in which the subject image on a reticle (11) is observed with the viewfinder using the mirror function (5) of the main mirror (4); and an EVF mode in which the main mirror (4) is in an up state and a live view image of the subject is displayed by the display function (6) of the main mirror (4) and observed with the viewfinder.SELECTED DRAWING:

Canon Working on Hybrid Viewfinder for EOS Cinema Camera | Canon Patent of Hybrid Viewfinder

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Canon Working on Hybrid Viewfinder for EOS Cinema Camera

Recent Patent suggest that Canon is planning to introduce Mirrors inside the Canon EOS Cinema Series so, they can also add a optical viewfinder wrapped over the EVF. So, you can get both view at a time, larger mirrored OVF view  as well as EVF view.

Understanding The Canon Hybrid EVF Patent

What is Canon actually trying to do, they want to give you more display area by adding a extra layer of optical viewfinder wrapped around corners of EVF. They won’t going to overlap each other, the Mirror will have a cut out around the sensor to cover up the left-over area of the sensor. So when you are looking through the viewfinder

From Mirrorless to SLT – EOS Lineup Journey

Canon latest patent suggest that they are working on a hybrid optical viewfinder for the Canon EOS cinema lineup. The Canon EOS cinema lineup is mirrorless, that is they don’t have mirror inside as of DSLR cameras. By the way despite of having no mirror inside their system the flange distance remains same (Canon EOS Cinema EF Mount Version ) so they can easily adapt the Canon EF Mount lenses without altering the focal length or loosing any feature.

By adding a Fixed Mirror for sure the EOS Cinema lineup will lose their Mirrorless status for sure. And eventually they will going to become a SLT camera with fixed Mirror inside.

Flange distance isn’t a issue , since they are designed to use EF Mount / DSLR lenses.

SLT system type mirror – fixed and non movable

Yes the mirror Canon will going to introduce is not a movable one as we have seen in the DSLR. The mirror inside a cinema EOS lineup will always going to remain fixed at a certain point, So the user can get uninterrupted view of what they are recording.

Image / Video Quality will remain unaffacted, Since the fixed Mirror isn’t covering up the sensor. So literally we will not going to see any change in the Video quality of the camera.

The Canon EOS in my lineup doesn’t actually need a hybrid viewfinder

But why Canon is trying to add a mirror inside the cinema EOS series. well I have seen professional cinematographers those who never look through the viewfinder while creating a movie or short film, they always prefer external display in their work.

Also see – Canon working on Light field camera

technically it doesn’t have any advantage, do share your thoughts and suggestion with us.

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source

Canon Patent Computational Photography Camera

Canon working on computational photography. We can see in the patent image camera just similar to the light field l16 camera, with multiple camera modules on it.

So it’s completely new concept for a company like Canon, to enter into computational photography. BTW, all major Smartphone manufacturers using dual or even Quad camera setup to create depth of field like DSLR.

We have already seen Light field L16 camera with multiple camera module, that perfectly generates depth of field like Pro lenses.

Light L16 camera

Light L16 is first Light Filed or Computational Photography Camera. But it’s availability is limited to US only.

We also have to keep in our mind that it’s not always necessary something that we see as a patent will it make it into production.

The patent was published on Nov of 2012. So, is also possible that Canon may have some working prototype of Light field camera in its lab.

Continue reading Canon Patent Computational Photography Camera

Canon Working on 10X Optical Zoom Lens for APS-C Compact Camera

Canon working on 10X optical zoom lens for APS-C compact camera. As we all know that the recently announced Canon G1X Mark III camera features 3X Optical Zoom lens. So, Canon is preparing for future competition and we may see a variant of Canon APS-C sensor based Megazoom camera.

Specification and lens arrangement of embodiment 5 for APS-C compact camera
Zoom ratio: 9.96
Focal length: 18.56 39.37 184.95
F no.: 3.61 5.11 6.49
Half image angle: 36.35 19.13 4.22
Image height: 13.66 13.66 13.66
Lens length: 110.65 121.29 164.53
Back focus: 8.65 10.60 12.43

[Publication number] Japanese Unexamined
Patent Application Publication No. 2018-36364 (P2018-36364A)
[Publication date] Heisei 8, March 2018 (2018.3.8)
Patent application title: ZOOM LENS AND IMAGING APPARATUS HAVING THE SAME

We will update you soon as we get any new information.

source

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Canon Patent 20X Optical Zoom Lens for 1 inch Sensor

Canon patent 20X optical zoom lens for 1″ sensor. We have two zoom lenses patent in a row one having aperture range of F2.7-4.6 and one having F2.7-5.6. At the moment we are waiting for Canon G3X successor [G3X successor have 25X 2.8-5.6 optical zoom].

Take a look at the translated patent details

Canon Patent 20X Optical Zoom Lens

canon patent image

Specification and lens arrangement of embodiment 2
Zoom ratio: 20.00
Focal length: 8.50 54.45 170.00 mm
F No .: 2.70 3.96 4.50
Half image angle: 37.14 7.74 2.49
Image height: 6.44 7.40 7.40 mm
Lens length: 144.32 144.32 144.32
Back focus: 11.37 11.37 11.37 mm P2018-25624A

 

Specification and lens arrangement of embodiment 5
Zoom ratio: 20.00
Focal length: 8.30 55.00 166.00 mm
F No .: 2.70 4.80 5.60
Half image angle: 37.84 7.67 2.56
Image height: 6.45 7.41 7.41 mm
Lens length: 149.39 149.39 149.39 mm
Back focus: 13.43 13.43 13.43 mm P2018-25625A Specification and lens arrangement aspect 1 Zoom ratio: 19.50 Focal length: 10.60 72.07 206.68 F No .: 3.61 3.61 3.61 Half image angle: 36.10 5.85 2.03 Image height: 7.41 7.41 7.41 Lens length: 198.01 198.01 198.01 Back focus: 30.92 37.81 16.95

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