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Canon Patent Hybrid Curve Sensor With Piezoelectric Elements

Curve sensor

This is the second time we are publishing a Canon Curve sensor patent that can change its shape based on situational needs and options available to user. The Patent we are discussing here is looks like a science fantasy, a curve sensor with Piezoelectric Elements that can dynamically control the center of curvature / shape of the sensor.

Patent details

Patent publication number 2016-213571
Release date 2016.12.15
Application date 2015.4.30
Canon patent
Curved state based on the measurement result of the bending state to control the
Measurement method is pressure sensor, laser light

Curve sensors aren’t reality yet, Sensor manufacturing Company are still using different forms of flat Hybrid sensors. We don’t know the exact date when these sensor will arrive in mass production. And Canon isn’t alone in curve sensor race.  Not Only Canon Sony also working on curved sensors and they have also published the test samples take from a FF curved sensor that can be seen here.

We will update you soon as we get any new information, stay with us (FACEBOOK | TWITTER | GOOGLE+)

Also see – Canon Patent – Hybrid Curve Sensor

Canon Patent 135mm F2 Lens Apodization Filter

Canon 135mm F2 Lens imageBefore we begin you must know that till now Canon doesn’t have lens with Apodization Filter.  In past Canon applied a patent for Canon 135mm F2.8 and 180 F3.5 Lens with Apodization Filter., today new and refreshed 135mm lens appeared with bright F2 aperture and Apodization Filter.

The Apodization Filter helps you to get more smooth and creamy bokeh compared to a conventional lens.

Apodization FilterFrom the image above you can see the work of Apodization Filter inside the lens. Filter creates pleasing and creamy bokeh .

Patent publication number 2016-218444
Release date 2016.12.22
Application date 2015.5.20
Focal length 130.98
F number 2.06
Field of View 9.38
Image height 21.64
Lens total length 159.05
BF 53.99
Canon patent
Even when there is vignetting, a good blurred image at all angle of view

As we have said Canon also Canon 135mm F2.8 and 180 F3.5 Lens with Apodization Filter in 2012, Details below

Patent literature, and abstract · self-interpretation

Patent publication number 2012-128151
Release date 2012.7.5
Application date 2010.12.15
Example 1
Focal length f = 135.0 – 137.2 mm
Fno. 2.83 – 3.90
Half-picture each 9.1 deg.
Image height 21.60 mm
Lens total length 150.0 – 186.7 mm
BF 47.4 – 80.7 mm
Lens construction 7 groups 10 sheets
1 UD glass
Maximum shooting magnification 0.25 times
Example 6
Focal length f = 180.0 – 179.1 mm
Fno. 3.50 – 4.00
Half of each figure 6.9 deg.
Image height 21.60 mm
Lens total length 199.8 – 218.0 mm
BF 70.0 – 89.8 mm
Lens configuration 7 groups 11 pieces
1 UD glass
Maximum shooting magnification 0.11 times
How to see out focus (Bokeh) is important
Apodization filter
Filter whose transmittance decreases in the peripheral part
Addition of intensity distribution to luminous flux
Bokeh’s outline becomes beautiful
Variable apodization element
If the shape of the interface is a liquid with the same refractive index, aberration variation does not occur
It is difficult to make the refractive powers and the Abbe numbers of the two liquids the same
Canon ‘s patent
Shape variable element
By changing the shape of the interface by applying voltage
Obtain apodization effect
Change refractive power and Abbe number
Reduce various aberrations in shape change
Optimize the absorption coefficient by devising the material to moderate the curvature of the interface and suppress the occurrence of aberrations
Reverse the amount of chromatic aberration of two materials (liquid etc.) and cancel it
Suppresses the difference in refractive index and Abbe number of two materials (liquid etc.)
Overall extension (with floating)

source 1 and source 2

Canon Patent Advance Optical Viewfinder

CANON optical viewfinder patent image

Take a look at the latest patent filed by Canon, the new generation of optical viewfinder have a small sensor above the eyepiece as you can notice. The exact details aren’t clear yet, we will update this page soon as we get any new information.


  • Patent Publication No. 2016-177038
    • Published 2016.10.6
    • Filing date 2015.3.19
  • Canon patent
    • A finder optical system having a reduction optical system and the imaging device
    • Reduction optical system for forming an object image formed on the focusing plate an imaging element

Do share a better translation is you have.