Patent: Optical Viewfinder for Mirrorless Camera

Here’s a strange patent application from Canon, an optical viewfinder adaptor for a mirrorless camera. Canon News breaks down Japan Patent Application 2018-005126: This adapter would provide the half mirror assembly that would split the optical path between the image sensor and the viewfinder, and allow for simutaneous use of the image sensor and that Read more...

Patent: EF 15mm f/4 & EF-M 9.5mm f/4

A new patent showing an optical formula for a new wide angle prime has appeared. The full frame lens in the application is an EF 15mm f/4, while the APS-C optical formula of a EF-M 9. 5mm f/4 shows a shorter backfocus than an EF-S lens and could actually be EF-M.

Updated: Patent: EF 15mm f/4 & EF-M 9.5mm f/4

Update: Canon News has dug a bit further and come to the conclusion that these optical formulas are for a fisheye due to the lenses having a 175 degree field of view. A new patent showing an optical formula for a new wide angle prime has appeared. The full frame lens in the application is Read more...

Patent: Canon EF 85mm f/1.8 & EF 100mm f/1.8

A patent showing 4 new optical formulas for EF prime lenses has appeared. Japan Patent Application2018-005133 shows the following: EF 50mm f/1. 8 EF 85mm f/1. 4 (Not the same as the EF 85mm f. 1. 4L IS) EF 85mm f/1.

Patent: Canon EF-M 9-18mm f/4-5.6

A new ultrawide zoom lens for APS-C EOS M cameras has appeared. This may be a replacement for the excellent EF-M 11-22mm f/4-5. 6 IS STM. The only knock against that lens is that it’s not wide enough.

Patent: More Ultra Wide Zoom Lens Patents

Canon is clearly working on new ultra wide zoom lenses to add to the lineup, we have yesterdays patent showing a EF 17-35mm f/4-5. 6 IS STM and today we see a patent application that covers 6 different ultra wide angle zoom optical formulas for APS-C sensors.

Patent: A New Type of ASC Lens Coating

A Canon patent application shows what looks to be expanding on ASC (air sphere coating). As you can see in the image below, ASC in fact looks like little bubbles From Japan Patent Application:2017-167271 To provide an optical member having an anti-reflection film with high strength, uniform refractive index distribution, and low scattering, and a Read more...

Patent: Canon EF 17-35mm f/4-5.6 IS STM

We’ve heard some chatter that Canon would continue to develop it’s non-L zoom lenses for full frame camera lineup and this patent for an EF 17-35mm f/4-5. 6 IS would seem to fit into that segment.

Patent: Canon Stacked Image Sensor Technology

Keith over at Northlight has uncovered more sensor related patents. The first patent uses a stacked sensor design to move AF and liveview data handling off the sensor part of the chip, to allow switching between them – faster and lower power.

Patent: Canon 400mm f/5.6 Mirror (Catadioptric) Lens

A patent application showing a new mirror lens design from Canon is confusing to say the least. I figured the days of the catadioptric lens were well behind us, but here we are. Specification from the patent: Focal length: 400mm Aperture: f/5.6 2 Read more...

Patent: Autofocus Related Patent Applications from Canon

For the folks that love reading/translating patents, here are three new ones uncovered by Northlight that are related to autofocus technologies. Summarized by Northlight: [USPTO] Refining AF to correct for lens chromatic aberration.

Patent: Canon EF-M 15-45mm f/1.8-3.5

A patent showing a faster version of the EF-M 15-45mm has appeared in the form of three separate optical formulas. EF-M 15-45mm f/1.8-3.5 EF-M 15-45mm f/2.0-4.0 EF-M 15-45mm f/2.8-5.0 Canon News Summarizes: It also looks like it may be the first canon lens patent application that I’ve seen that specifically mentions that distortion abberation control Read more...

Patent: EF-S 15-300mm & EF 28-550mm Optical Formulas

A patent application covering two optical formulas for both a full frame and APS-C superzoom have surfaced in Japan. Full Frame: 28-550mm f/3. 5-6. 3 APS-C:15-300 f/3. 5-6. 3 I think it’s more likely that we see a replacement for the EF-S 18-200mm f/3.

Patent: Canon Application for a Hybrid Viewfinder

It appears that Canon is continuing R&D into some kind of hybrid viewfinder for DSLRs. Canon News has uncovered a recent Japanese patent application from Canon for a hybrid viewfinder. Patent Summary: This one is a clever application where the EVF moves up with the mirror, to show the EVF image through the viewfinder. This Read more...

Patent: Another Related to Curved Sensors

Northlight Images has uncovered another Canon patent relating to curved sensors. Japanese patent application2017-084874: Generating of a gap of the focal position by a curvature of field, etc. are prevented, and the present invention inhibits the voltage change of the imaging signal which occurs because the impedance of each bump differs, and an object of Read more...

Patent: Variable Curved Image Sensor Concept

Northlight Images has uncovered a patent showing some curved sensor technology. The interesting part of this patent, is that the level of curvature in the sensor changes depending on the focal length.

Patent: Canon 18-105mm f/4-5.6 With Built-in Telconverter, But With a Twist.

Here’s a patent we missed that appeared in Japan and was reported by Northlight Images. This is a18-105mm f/4-5.6 With Built-in Telconverter, which isn’t a big departure, expect that the TC is to make the wide angle, wider! At 18mm, the lens is f/4, but with the TC engaged, the lens becomes a 15mm f/3.3. Read more...

Patent: EF-S 30mm f/1.8 & EF 50mm f/1.8

A Canon patent was found over at Northlight Images for a 50mm/1. 8, which was replaced relatively recently, and a APS-C 30mm/1. 8 lens has appeared at the Japanese patent office(No. 2017-102352 ) Full frame lens specifications: Focal length 51.

Patent: New Tilt-Shift Lens Designs & More Information

The 45mm and 90mm tilt-shift lens have yet to be replacedyears after the TS-E 17mm f/4L & TS-E 24mm f/3. 5L II were released. A lot of people, myself included figured we’d be seeing new 45mm and 90mm tilt-shift lenses relatively soon, that obviously hasn’t been the case.

Patent: Canon Working to Improve Dual Pixel AF

A patent showing Canon continueing to improve Dual Pixel AF technology has appeared at the USPTO. A quick summaryfrom Northlight: Offset microlenses and unequal pixel sizes improve off axis dual pixel sensor phase AF in a new Canon US patent. You can read the complete patent here.

Patent: Canon Patents New Type of Focusing Screen

Canon appears to be developing a new type of brighter focusing screen according to a recent patent. Keith over at Northlight appears to have done the legwork in breaking down the patent. A Canon patent looks at making less regularly spaced micro lenses for, amongst other things, a brighter view Improved brightness in a viewfinder Read more...

Canon Top Japanese Company in U.S. Patent Rankings

TOKYO, January 12, 2017Canon Inc. again ranked first among Japanese companies and third overall for the number of U. S. patents awarded in 2016, according to the latest ranking of preliminary patent results issued by IFI CLAIMS Patent Services.

Patent: Canon EF 135 f/2L w/Apodization Filters

Canon has filed a patent for an EF 135mm f/2L optical formula withapodization filters. From Wikipedia(Via TDP): Apodization is an optical filtering technique, and its literal translation is “removing the foot”.

Patent: Canon RGBW 12 Image Sensor

A patent over at Egami showing Canon is working on an RGBW image sensor has appeared. Patent publication number 2016-208093 (Google Translated) Release date 2016.12.8 Application date 2015.4.15 RGBW 12 array Generate resolution data and color data, synthesize resolution data and color data, up-convert, process with mosaic (Bayer conversion), demosaic in order The new patent Read more...

Patent: Electronic Curved Sensor

Another patent showing a curved sensor design from Canon has appeared. A previous patent showed how a curved sensor could help reduce vignetting. This patent shows howto electronically bend the sensor.

Patent: Canon Curved Sensor to Reduce Vignetting

It looks like Canon is continuing to research curved sensors, this patent is geared towards light fall off on the sides of the sensor. Patent Publication No. 2016-197663 (Google Translated) Published 2016.

Patent: Canon Mount Replacement Camera System

Canon patents a mount replacement camera system, which is likely related to the soon-to-be-released Cinema EOS C700 and an already available service forthe Cinema EOS C300 Mark II. I’m not sure if there’s any reason for this on a DSLR.

A Focus Peaking Patent from Canon

Canon has published a patent for focus peaking, a feature some feel has been omitted from Canon DSLRs in live view mode. You can get focus peaking in a Canon DSLRs if you use magic lantern. Patent Publication No.

Patent: A New Canon EF 300mm f/2.8L IS

We posted a couple of days ago that Canon was well into the development of new “big white” lenses. The first patent for a new optical formula has appeared for an EF 300mm f/2. 8L IS. Patent Publication No.

Patent: How Canon Increased AF Point Spread in the EOS 5D Mark IV

Northlight has broken down a patent that shows how Canon was able to increase the spread of the AF points in the EOS 5D Mark IV. A Canon patent shows how by replacing the sub mirrors with laminated diffraction gratings, the normal angle of relflection can be altered, adding or subtracting to the usual angle.In Read more...

Apple Patent Shows an iPhone Turning Into a MacBook

Want to process your iPhone photos for Instagram on a laptop without having to transfer any files? In the future there may be a crazy new way you can do so. Apple has patented a new “accessory” that transforms a cell phone into a full-fledged laptop. Filed in September 2016 and published on March 23, […]