Difference between revisions of "Lens patents"

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European Patent Office (EPO) site is much better in most regards than JP-PLAT, however, some Japanese patent publications are missing from EPO site.
 
European Patent Office (EPO) site is much better in most regards than JP-PLAT, however, some Japanese patent publications are missing from EPO site.
 
Google patents is easier to browse, but is even less complete.
 
Google patents is easier to browse, but is even less complete.
 +
 +
Patents which seem to quite match the commercial lens
  
 
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{| class="wikitable"
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| SAMSUNG ELECTRONICS CO LTD [KR]
 
| SAMSUNG ELECTRONICS CO LTD [KR]
 
| HEU MIN [KR]
 
| HEU MIN [KR]
−
|-}
+
|}
  
 
<p>
 
<p>

Revision as of 18:58, 6 December 2016

English translations of Japanese patents can be found at Japan platform for patent information [[1]]. Note that the English interface provides translation and Japanese images, but does not have option to give OCR-ed Japanese text, use Japanese interface to get it [[2]]. Nor does the site allow direct linking to pages. Many patents become known to general public via [Egami blog]. European Patent Office (EPO) site is much better in most regards than JP-PLAT, however, some Japanese patent publications are missing from EPO site. Google patents is easier to browse, but is even less complete.

Patents which seem to quite match the commercial lens

publication type filed published companies authors
JP 2016-126295 DSLR FF Tamron 100-400mm F4.5-6.3 VC 2015.1.8 2016.7.11 Tamron Co., Ltd. Katsuhiro Yoshimura, Hiroko Negishi, Yoshito Iwasawa, Jun Takahashi
JP 2016-118658 MILC APS-C Canon EF-M 15-45/3.5-6.3 STM 2014.12.22 2016.6.30 Canon Inc. Yukio Takanashi (高梨 幸雄), Takashi Inoue (井上 卓)
JP 2015-191237 (DE 33 45 987 A1 ) APS-C MILC Leica Summicron-T 23/2 ASPH Leica Camera Aktiengesellschaft KARBE PETER, DIETMAR STUIBLE
JP 2015-68910 MILC FF "Zeiss" Sony FE 55/1.8 2013.9.27 2015.4.13 Sony Corporation Chen Yonghua (陳 永華), Naomi Miyagawa (宮川 直己)
JP 2015-41012 MILC FF "Zeiss" Sony FE 35/2.8
JP 2013-37105 (+US 8837056?) Sony E 55-210/4.5-6.3 2011.8.5 2013.2.21 Sony Corporation 特許業務法人つばさ国際特許事務所, Michiki Maruyama (丸山 理樹)
JP 2015-121649 MILC FF Zeiss Batis 25/2
JP 2015-96915 MILC FF Zeiss Batis 85/1.8
JP 2015-18124 MILC FF Sony FE 28-320/3.5-6.3
JP 2012-242690 US8643960 MILC APS-C Sony E 50/1.8
JP 2014-137540 MILC APS-C Sony E 20/2.8 (+28/2.8)
KR100799216 APS-C SLR Sigma DC 30/1.4?? AMSUNG TECHWIN CO LTD ?? Hanwha Techwin Co.,Ltd. HEU MIN
JP 2013-161076 micro 4/3" Olympus M.Zuiko 75/1.8 Sigma Yukihiro Yamamoto (山本 幸広)
[US6373638 B1] focal reducer 0.655x Oct 18, 1999 Apr 16, 2002 Minolta Co., Ltd. Tetsuo Kohno
US20130064532 focal reducer Speed Booster J. Brian Caldwell, Wilfried Bittner
US8903232 focal reducer Speed Booster Ultra
CN203178552 (U) focal reducer ? XU ZHONGY XU ZHONGYI; LIU WEIZHEN; SUN DEGANG; GU YINGHONG; ZHANG XIAOFENG; WANG YUGE; LI ZHENYU; ZUO GUANNAN
CN203365783 focal reducer
CN103913817 (A) ― 2014-07-09 FF MILC Mitakon 50/0.95 XU ZHONGYI XU ZHONGYI; LIU WEIZHEN; SUN DEGANG; GU YINGHONG; ZHANG XIAOFENG
CN104252033 APS-C 35/0.95 ??
JP 2016-31419 fixed 1" PowerShot G3X 28.07.2014 07.03.2016 CANON INC MOGI SHUICHI
JP 2016-161889 fixed 1" Powershot G9X
RU 2290675 [[3]] [[4]] FF SLR Zenitar 50 f/2 MC 29.06.2005 27.12.2006 KMZ Byshkin Sergei (Бышкин Сергей Борисович), Kushnaryov Konstantin (Кушнарев Константин Геннадьевич), Strakhov Vyacheslav (Страхов Вячеслав Викторович), Shcheglov Sergei (Щеглов Сергей Иванович), Levitsky Pyotr (Левицкий Петр Тадейович)
JP-A 2016-139087 APS-C fixed Sigma DP0 Quattro 2015.1.29 2016.8.4 Sigma Kono Horai (幸野 朋来), Ogasawara Noriyuki(小笠原 典行)
JP2014126652 Sigma DP3 ?? 20121226 2014-07-07 OGASAWARA NORIYUKI
JP 2012-234169 APS-C MILC Sigma 30/2.8 DN (+some others) 2011.4.18 2012.11.29
JP2014048480, ?JP2014044243 APS-C MILC 17-70/2.8-4 KAMIMURA YUTAKA
JP-A 2015-161792 APS-C MILC Zeiss Touit 50/2.8 Macro 2014.02.27 2015.09.07 FUJIFILM Corporation, Carl Zeiss AG Yanagida Masashi 柳田 征史, Tsuyoshi Sakuma 佐久間 剛, Tomioka Ryoko 富岡 領子, Hiroki Saito 斉藤 広樹, Aurelien Dodokku, Michael Pollmann, Eugene Klein
JP-A 2014-219587, US2016011404 APS-C MILC Fujifilm XF 27/2.8
JP-A 2013-44964 www.google.ru/patents/WO2014007298A1?cl=en WO2014007298 APS-C MILC Sony E 10-18/4 OSS
JP-A 2016-99362 4/3" MILC Olympus M.Zuiko 30/3.5 macro 2014.11.18 2016.5.30
JP 2016-184136 MILC 4/3 Olympus M.Zuiko 8/1.8 2015.3.27 2016.10.20 Sigma Corporation Yukihiro Yamamoto (山本 幸広)
JP 2016-139125 MILC FF Leica SL 90-270/2.8-4 + others 2015.1.21 2016.8.4 Panasonic
JP 2016-188967 MILC FF Zeiss Batis 18/2.8 2015.3.30 2016.11.4
JP 2010-186011 4/3 MILC M.Zuiko 17/2.8 + oth Olympus (+attorneys) Yasuharu Yamada, Hirohiko Kimata
JP 2015-75501 MILC 4/3 Olympus M.Zuiko 25/1.8 2013.10.4 2015.4.20 Sigma Yukihiro Yamamoto (山本 幸広)
JP 2015-172612 FF DSLR EF 28-200 STM (optics seems to be identical to older versions) 2014.3.11 2015.10.1 Canon Yukio Takanashi (高梨 幸雄) Mori Toshiro (森 丈大)
JP 2015-31869 APS-C DSLR EF-S 10-18/4.5-5.6 2013.8.5 2015.2.16 Canon Yukio Takanashi (高梨 幸雄) Makoto Nakahara (中原 誠)
JP 2013-137411 FF SLR EF 40/2.8 STM (+28, +35, +45)
JP 2015-111192 APS-C SLR EF-S 24/2.8 STM (also 20, 28) 2013.12.6 2015.6.18 Canon Yukio Takanashi (高梨 幸雄) Yuichi Gyoda(行田 裕一)
US3737214 FF SLR Fisheye Nikkor 6/2.8 1971.09.29 1973.07.05 Nippon Kogaku Kk Shimizu Y
[US7102834] FF rangefinder Leica apo-Summicron-M 75/2 asph 16 Feb 2005 5 Sep 2006 Leica Camera Ag Peter Karbe
US20140002910 MF SLR Leica Super-Elmar-S 24 mm f/ 3.5 Asph Leica Camera Ag Stefan Roth, Peter Karbe
US20080068726 FF rf Leica Tri-Elmar-M 16-18-21mm f4 asph Christoph HORNEBER
US20140098253 APS-C MILC EF-M 11-22/4-5.6 8 Oct 2013 10 Apr 2014 Canon Satoshi Maetaki
US20120057234 APS-C SLR Tamron 16-300/3.5-6.3 26 May 2011 8 Mar 2012 ? Dayong Li
US 8531777 APS-C SLR Tamron SP 70-200mm F/2.8 Di VC USD (A009)?? 14 Jul 2011 10 Sep 2013 Tamron co Dayong Li
US8049968 FF SLR Sony 70-400/4-5.6 30 Dec 2008 1 Nov 2011 Tamron Co Ltd Hisayuki Yamanaka, Dayong Li
US 20110286116 APS-C SLR Tamron SP AF 60 mm f/2 Di II LD (IF) Macro 5 Feb 2010 24 Nov 2011 Tamron Co., Ltd. Kaori Shimizu, Hisayuki Yamanaka
US 8553339 APS-C MILC Sony E 18-200?? Hisayuki Yamanaka, Makoto Kanai, Masafumi Sueyoshi, Masaharu Hosoi
US 8836846 APS-C MILC Sony E 16-50/3.5-5.6PZ 26 Feb 2013 16 Sep 2014 Sony Corporation Makoto Kanai, Motoyuki Otake, Masaharu Hosoi, Toshihiro Sunaga, Masaki Maruyama
US 20130033768 (JP 2013-37080) APS-C MILC "Zeiss" Sony E 24/1.8 Toshihiro Sunaga, Motoyuki Otake, Masaharu Hosoi
US 20110273780 APS-C MILC Sony E 18-55/3.5-5.6 (+some 18-200) 11 Apr 2011 10 Nov 2011 Sony Corporation Masaharu Hosoi, Hiroyuki Matsumoto, Masafumi Sueyoshi
US 7535657 fixed Cybershot R1 Daisuke Kuroda, Masafumi Sueyoshi, Kazuya Watanabe
US 8879163 ?cybershot rx100 Sony Atsushi Oohata, Hiroki Hagiwara
US 20150192839 "Leica" Panasonic 45/1.2 ? 4/3 MILC Dec 19, 2014 Jul 9, 2015 Panasonic Intellectual Property Management Co., Ltd. Kyoichi Miyazaki
JP 2012-226248 1/1.7" Pentax Q 8.5/1.9 2011.4.22 2012.11.15 Pentax Ricoh imaging Co., Ltd. Kunio Miura (三浦 邦夫) Nomura Yoichi (能村 洋一)
JP 2012-247689 (US2012307374) 1/1.7" Pentax Q 5-15/2.8-4.5 2011.5.30 2012.12.13 Pentax Ricoh imaging Co., Ltd. Kunio Miura (三浦 邦夫) Koji Kato (加藤 浩司) Saori Masakazu (小織 雅和)
US 20090273851 1" Nikon 1 32/1.2 02/12/2009 11/05/2009 NIKON CORPORATION (Tokyo, JP) Take, Toshinori (Yokohama-shi, JP) Yamamoto, Sayako (Kawasaki-shi, JP)
JPH085914 FF SLR Nikon AF Nikkor 35-80 mm f/ 4-5.6 D (2) ? NIPPON KOGAKU KK SATO HARUO
JPH1130748 FF SLR Nikon AF Nikkor 28-80 mm f/ 3.5-5.6 D (2) ? MORIYAMA KEIJI
US 20130335617, US9250423 4/3" MILC Lumix G Vario 45-150 mm f/ 4-5.6 Asph MegaOIS
US 20070229983 A1, US 7542219 B2 APS-C SLR Pentax 70/2.4 limited
US20080247058, US 7715118 B2 APS-C SLR Pentax SMC DA 35 mm f/ 2.8 Macro Limited Hoya Corporation Koji Kato
US20100194930, US 8411368 B2 Lumix G Vario 7-14 mm f/ 4.0 Asph
JP,2014-048488 FF SLR Sigma 35/1.4 ART 31.08.2012 17.03.2014 SIGMA CORP SHIODA RYO
JP2011170128 FF SLR Sigma DG 85 mm f/ 1.4 EX HSM 2010.2.19 2011.9.1 SIGMA CORP YAMAMOTO YUKIHIRO (山本 幸広)
JP 2013-3324 4/3 "Leica" Panasonic 25/1.4 16.06.2011 07.01.2013 SIGMA CORP KAMIMURA YUTAKA
JP 2006-259016 APS-C SLR Sigma 18-200/3.5-5.6 2005.3.16 2006.9.28 SIGMA CORP Yokoi Noriwa (横井 規和), Kusuke Kusakawa (草川 徹介)
KR 1020110014033 (2011.02.17) camera-lens protocol? NIKON CORPORATION IMAFUJI, Kazuharu
KR 1020070114271 camera-lens protocol? RICOH IMAGING COMPANY, LTD. NUMAKO, Norio KAGAMI Kazuhiro
KR 10-2008-0023933 camera-lens protocol? RICOH IMAGING COMPANY, LTD. KAGAMI, Kazuhiro
KR 10-2014-0184971 FF SLR Samyang 50 mm f/1.4 AS UMC 2014.12.19 2016.06.29 SAMYANG OPTICS CO., LTD LEE JUNG DU
KR 3020110044240(2011.10.24) lens design Samyang 7.5/3.5 2012.11.09 SY Corporation Co., LTD
[D/417785 lens design Samyang 7.5/3.5 Samyang Optics Co., Ltd. (Masan, Gyeongsangnam-do, KR) Kim, Dal-gyu (Gyeongsangnam-do, KR)
KR 1020080036871, ?KR20120025879 ? ?? samsung NX 85/1.4 SAMSUNG ELECTRONICS CO., LTD. YONEYAMA, Shuji
KR 1020090102973 ? ?? samsung nx 60/2.8 SAMSUNG ELECTRONICS CO., LTD. RYU, Jae Myung (류재명)
US2006050406 4/3" SLR Olympus Zuiko 7-14/4 2006-03-09 OLYMPUS CORPORATION ISHII ATSUJIRO
US2008291545 (ex.4) 4/3" SLR Olympus 12-60/2.8-4 2008-11-27 OLYMPUS IMAGING CORP ISHII ATSUJIRO
US US2009002845 4/3" SLR Olympus ED 14-42/3.5-5.6 2009-01-01 OLYMPUS IMAGING CORP HOSOYA TAKESHI; ISHII ATSUJIRO
US2008062534 4/3" SLR Olympus 40-150/4-5.6 2008-03-13 OLYMPUS IMAGING CORP ISHII ATSUJIRO, KIMATA HIROHIKO 
US2006056054 4/3" SLR ????14-42/3.5-5.6 OLYMPUS CORPORATION KASHIKI YASUTAKA
US2008112064 4/3" SLR Olympus 14-35/2 OLYMPUS IMAGING CORP ISHII ATSUJIROU
US2004042087 Olympus Zuiko Digital ED 50-200 mm f/2.8-3.5 SWD TAKATO HIDEYASU
US2004017605 (ex.3) Zuiko 300/2.8 KASAHARA TAKASHI [JP]; IMAMURA MASAHIRO [JP]
US2016154222, US2016154221 APS-C MILC Fujinon XF 16-55/2.8 2016-06-02 FUJIFILM CORP NODA TAIGA [JP]; TOMIOKA RYOKO [JP]; CHO MICHIO [JP]
US2016282590 Fujinon XF 16/1.4 SAITO HIROKI [JP]; SUZUKI TAKASHI 
US2015212302 (ex.3) Fujinon XF 56/1.2 SAITO HIROKI [JP]; SUZUKI TAKASHI 
US2015168694 Fujinon XF 14/2.8 SUZUKI TAKASHI [JP]; SATO KENICHI [JP]; NODA TAIGA [JP] +
US2014285903 Fujinon XF 35/1.4 SUZUKI TAKASHI
US2015131163 Fujinon XF 10-24/4 NODA TAIGA
US2011194016 1/2.3" fixed 5-25/3.5-6 NODA TAIGA
US2014133036 1/1.5" fixed (finepix x10 lens) 7-28/2-2.8 NODA TAIGA [JP]; CHO MICHIO
US2012069456 APS-C FIXED 23mm/2 (Finepix X100 lens) SUZUKI TAKASHI
US2011019033 fixed 5-90 ORI TETSUYA [JP]; SUZUKI TAKASHI
US2010073776 ??Hasselblad 35-90 mm f/ 4-5.6 HCD SUZUKI TAKASHI
US2015160443 ?? SLR ??portrait (90mm eq) f/2 lens KANDA HIDEO [JP]; BABA TOMOYUKI [JP]; SUZUKI TAKASHI [JP]; CHO MICHIO [JP
US2015185437 medium format SLR ?????? 28/4? SUZUKI TAKASHI
US2012063011 medium format SLR 50 mm SUZUKI TAKASHI
US2015185450 1/2.3" fixed 5-200/2.8-5.6 SAITO HIROKI
US2015362720 eyepiece SAITO HIROKI
US2013148006, US2013141629 4/3 MILC Lumix 14/2.5 PANASONIC YOSHINAGA SHUNICHIRO [JP]; MIYAZAKI KYOICHI [JP]; YAMANAKA TAKAO [JP]; ZAITSU KEIICHI [JP]
US2011052181 4/3 MILC ??Lumix 20/1.7 KURIOKA YOSHIAKI [JP]
US2010091123 Lumix 14-42, 14-140, MIYAZAKI KYOICHI [JP]; YAMADA KATSU [JP]; IMAOKA TAKUYA [JP]; SAMPEI MASAKI [JP]
US2011157719 APS-C NX 50-200/4-5.6 YONEYAMA SHUJI
US2013057972 APS-C Samsung NX 16/2.4?? LEE TAE-KUN [KR]; SAMSUNG ELECTRONICS CO LTD [KR] LEE TAE-KUN [KR]
US2010149663 NX 30/2 HEU MIN
US2013235467 APS-C MILC NX 10/3.5 fisheye? + zoom? SAMSUNG ELECTRONICS CO LTD [KR] HEU MIN [KR]

US2015247994 fuji 50/2.8 macro aps-c mirrorless

Patented, not produced

publication type filed published companies authors
US 20100231781 APS-C MILC Samsung NX 300/2.8 Tae-kun Lee
KR 1020130041837 24/1.4
US2016223799 rear TC YONEYAMA, Shuji
US2010020420 FF SLR 50/1.2 SAMSUNG HEU MIN
JP 2011-59293 APS-C MILC 18-50/3.5-5.6 2009.9.9 2011.3.24 SIGMA Ogasawara Noriyuki (小笠原 典行)
JP-A 2016-102852 FF SLR Canon 800,1000,600 f/5.6 DO 27.11.2014 02.06.2016 CANON INC SATO ARATA, YOKOYAMA TAKAYOSHI
JP 2016-126086 FF MILC, SLR 35/1.8, 62/2.8, 25/2.8, 59/2.8 26.12.2014 11.07.2016 TAMRON CO LTD YOKOTA KOICHIRO
JP 2013-182259 APS-C MILC 24-135mm f/3.5-4 OSS
JP 2016-14841 FF MILC 28-67 f/2 2014.7.3 2016.1.28 Patent Office Tsubasa International Patent Office (特許業務法人つばさ国際特許事務所), Yumiko Uehara (上原 祐美子)
JP 2015-41003 focal reducer Nikon 50/1.4G 2013.8.22 2015.3.2 Nikon [Yoshio Inoue Kenichi Aihara Ryuji Ito Junko Inoue 井上 義雄 相原 健一 伊藤 隆治 井上 淳子] Haruo Sato (佐藤 治夫)
JP 2016-004093 1/1.7" Pentax Q 4.2/1.8 16.06.2014 12.01.2016 Ricoh Imaging Corporation [Kunio Miura 三浦 邦夫 Miura Kyoyama 三浦 邦陽 ]Takahiko Oishi (大石 崇彦)
JP 2015-4717 1/1.7" Pentax Q 18/2.8 macro 2013.6.19 2015.1.8 Ricoh Imaging Corporation [Daisuke Ando Miura Kuniyama] Yoichi Nomura [安藤 大介 三浦 邦陽 ] 能村 洋一
JP 2014-109711 1/1.7" Pentax Q 4.4/1.4 2012.12.3 2014.6.12 Ricoh Imaging Corporation [Kunio Miura, Daisuke Ando, Miura Kuniyama] Tatsuyuki Onozaki [三浦 邦夫, 安藤 大介, 三浦 邦陽] 小野崎 龍之
JP 2014-81457 1/1.7" Q 45/1.8 2012.10.16 2014.5.8 Ricoh Imaging Corporation [Kunio Miura, Daisuke Ando, Miura Kuniyama] Tatsuyuki Onozaki [三浦 邦夫, 安藤 大介, 三浦 邦陽] 小野崎 龍之
JP 2014-74783 APS-C MILC Sony E 250/4 OSS Reflex
US 8699151 FF MILC Sony FE 90/2.8 macro 5 Mar 2012 15 Apr 2014 Tamron Kazuya Watanabe
US2016147041 APS-C MILC 16/1.8 FUJIFILM SATO KENICHI
US2015378136 APS-C MILC 12/2.8 FUJIFILM NODA TAIGA
JP 2016-161878 FF MILC 70-200/2.8 Samsung
JP 2016-161879 FF MILC 24-70/2.8 Samsung Hiroyuki Hagiwara (萩原 宏行)
WO2016047112 4/3 FIXED 25/1.7 2016-03-31 PANASONIC IP MAN CO LTD IIYAMA TOMOKO; SUEYOSHI MASAFUMI
JP2013050674 scary standard zoom Olympus OGATA KOJI

Patents similar to commercial lens, but different

publication type filed published companies authors
JP2014-021341 APS-C MILC SEL30M35 (has 1 lens more) Tamron
US 20130242166 FF MILC "Zeiss" Sony FE 24-70/4 OSS
US20140218808 4/3 MILC 40-150/2.8 (the master lens is different) Olympus Ogata, Yasuji (Tokyo, JP) Kimata, Hirohiko (Tokyo, JP)

No idea about these

publication type filed published companies authors
JP,2015-072370 FF SLR Canon EF 35/1.4 II L (without 'BR') SHIRASAGO TAKASHI
US 5835286 FF RF 50/1.2?? 08/23/1996 Olympus Optical Co., Ltd. (Tokyo, JP) Yamanashi, Takanori (Tokyo, JP)
US2011019289 1/2.3" fixed ?? 6-20/2-4 2011-01-27 CASIO COMPUTER CO LTD KAWAKAMI ETSURO
JP2008158121 1/2.3" fixed ??6-20/2.8-5 CASIO COMPUTER CO LTD KAWAKAMI ETSURO
US2007201142 1/2.3" fixed ??6-20/2.8-5 CASIO COMPUTER CO LTD NARIKAWA TETSURO [JP]; KAWAKAMI ETSURO [JP]
JP2008020658, JP2008020657 APS-C SLR 25/1.4 (similar to early 30/1.4) Sigma corp. Kono Horai (幸野 朋来)
US2015109690 ?FF SLR Fuji ??24/1.8
JP2012226309 25/1.4, 30/1.8, 12/1.8, 16/1.8, 50/1.8, 26/1.8, PANASONIC IMAOKA TAKUYA; HOSHI KOJI; HAGIMORI HITOSHI
US 6940657 FF FIXED 28-77/4-11, 28-88/4.8-11, 28-77/4.8-11, 28-97/4.9-14, 25-77/4.2-11 Olympus Corporation (Tokyo, JP) Kashiki, Yasutaka (Hino, JP)
US2008144190 APS-C SLR 18-70/4-5.6 PENTAX CORP SAORI MASAKAZU
CN104730692 FF MILC 35/2 UNIV SHENYANG NORMAL WANG XIAOHONG; WU JIANJUN; YU JI
KR 10-2006-0108367 APS-C SLR 18-200/3.5-5.6 2006.11.03 Hanwha Techwin Co.,Ltd. YONEYAMA, Shuji
KR 10-2006-0108367 5 mm fixed 3.6-107/1.48-4.02
KR 20-1999-0004056 FF FIXED 40-100/4.8-12.25
KR 10-1998-0049391 1/1.5" fixed? 10/1.2 1998.11.18 2001.06.01 Hanwha Techwin Co.,Ltd PARK CHEON HO 
2015-215391 Canon EF-M macro lens, f=53.73, 46.39, 58.00
2015-215494 Canon EF-M macro lens, f=31.01, 21.77, 48.58
2015-163926 Tamron pancake lenses for FF mirrorless f/2.8, 28, 50, 60 mm.
2015-75508 Tamron 90/2.8 macro (different from SEL)
2016-95461 Fujifilm looks like 25 mm f/1.9 distagon for DSLR

[https://www.google.ru/patents/CN203365783U?cl=en&dq=aps-c&hl=en&sa=X&ved=0ahUKEwjr6-W2rpnQAhVGEywKHSeBAXoQ6AEIQDAF CN203365783] Focal reducer
[https://www.google.ru/patents/US20150346465 US20150346465] Fujifilm TC
[https://www.google.ru/patents/US20140028891 US20140028891] Sony E 10-18/3.5-4
US 20110002045 Similar to Sony RX10 lens, 8x f/2.8, but more complex
US 20120212842 .ne.Sony E 35/2.8
US 7990623 compact lens with 45 deg prism 
US 20050007678 ditto
US 20130242165 .ne.Sony E 16-80/3.5-4.5
US 8842380 B2 ? Sony E 30/3.5 macro (very similar, but different)
JP 2014-178478 ? Olympus Stylus 1
JP 2016-191760 Canon SLR eyepiece
JP 2008225489 Sigma Eyepiece
JP 2016-177042 M43 teleconverter
JP 2016-166972 Powershot 1.5" ??
JP 2016-126226 Canon APS-C compact camera 15-75/2-5.6
JP 2006030499 Sigma mount?? SA?
KR 10-2014-0167814 samyang 50/1.4 mirrorless aps-c?
JP2006259478 odd slr eyepiece
US2010008660 seems to descibe Fujifilm X-mount
US2011069399 weird wideangle lens
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