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1 US A1 (19) United States (12) Patent Application Publication (10) Pub. No.: US 2014/ A1 Gao et al. (43) Pub. Date: Jun. 26, 2014 (54) (71) (72) (73) (21) (22) APPARATUS FOR OPTICAL SEE-THROUGH HEAD MOUNTED DISPLAY WITH MUTUAL OCCLUSION AND OPAQUENESS CONTROL CAPABILITY Applicant: AUGMENTED VISION INC., (US) Inventors: Chunyu Gao, Tucson, AZ (US); YuXiang Lin, Tucson, AZ (US); Hong Hua, Tucson, AZ (US) Assignee: AUGMENTED VISION INC., Tucson, AZ (US) App1.No.: 13/857,656 (60) (51) (52) Filed: Apr. 5, 2013 and vice versa. Related US. Application Data Provisional application No. 61/620,574,?led on Apr. 5, 2012, provisional application No. 61/620,581,?led onapr. 5, Publication Classi?cation Int. Cl. G02B 27/01 ( ) US. Cl. CPC..... G02B 27/0172 ( ) USPC /238 (57) ABSTRACT The present invention comprises a compact optical see through head-mounted display capable of combining, a see through image path With a virtual image path such that the opaqueness of the see-through image path can be modulated and the virtual image occludes parts of the see-through image 30!},/ l/ WCRWWSPi-AY omcrsva QPTBCS $.51}; \_ $6 \ _/ 32g} '\ / ~ - ~ BEAMSPLBTTER 339 SUV! - '"m 55 EYEPIECE / x.... : ACOMBNG \ \\. E LIGHT /' r EXIT 3&2 PUPii.,/ \ BACK LAYER / \FRONT LAYER ~~~~~~~~~ - W VERTUAL ViEW SEE-THROUGH PATH 511$ PATH 30?

2 Patent Application Publication Jun. 26, 2014 Sheet 1 0f 25 US 2014/ A1 PLATFO RM ViRTUAL CAR Fig. 1b

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4 Patent Application Publication Jun. 26, 2014 Sheet 3 0f 25 US 2014/ A1.... Y E....i 316 \ E \ 54 x... i. {NCOMENG 1. LIGHT BACK LAYER/ \ FRGNT LAYER ; ~- W vzm'um vmw ssmaaouea PATH 595 PATH 393 Fig.3

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6 Patent Application Publication Jun. 26, 2014 Sheet 5 0f 25 US 2014/ A1 50:1 Mime-ms,va,// 550 \. sum / BEAMSPLBTTER \» evamca 510 mss QBJECTWE GPTzcs 51 \ _/ 529 incoming -?lwm '''''' - f LiGHT E \\ / $4 / sz PL:sz / 5.92;. f \ BACK LAYER / mam LAYER 5;; ;. \ Q ~~~~~~~~~ H VERTUAL VIEW PATH m W SEE-THRQUGH PATH so? Fig.5

7 Patent Application Publication Jun. 26, 2014 Sheet 6 0f 25 US 2014/ A1 If S incoming UG HT / sz PUPiL / / 662 / \ / 52 \ aack LAYER/ \fbqeyiimxer ~~~~~~~~~ ~~ < ~ VERTUAL VEEW $EE?THRGUGH PATH 625; PATH 567 Fig. 6

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10 Patent Application Publication Jun. 26, 2014 Sheet 9 0f 25 US 2014/ A1 diagram F éeid Angie iject in Y 5mm ~ % 5_ 13" " ~19 {iv O a Q; r2 0 o O w as X Haw?mgie in Ubg'ect Space * degrees Minimum == {3,12%3 Maximum = {$33.83, Average = QAZSOQ Std Kiev = ? Fig.9

11 Patent Application Publication Jun. 26, 2014 Sheet 10 0f 25 US 2014/ A1, 1000 PLATE BEAMSPLBTTER // 1959 " QBJECTBVE omcs /.....,,,- ss mama 52 '''' \ $2 / / ROOF PRISM / Fig. 10

12 Patent Application Publication Jun. 26, 2014 Sheet 11 0f 25 US 2014/ A1 Minimum $ Maximum ; Avamge = ilé33?8 SH} 53% :{i giey513-3 Fig.1}.

13 Patent Application Publication Jun. 26, 2014 Sheet 12 0f 25 US 2014/ A1,. '. 4 Mask Generation Depth Map 9f \1 1mm Obj {a Aigorithm External Scene Virtuai image Mask image.? 5 Spatial Lioht M on dis Ea *2 Ext is i ) p y Modulator X 6mm 66% The combined image with currect oeciusion Fig.12

14 Patent Application Publication Jun. 26, 2014 Sheet 13 0f 25 US 2014/ A1 Tabie 1: thicai surface prescription of surface 1 of the eyepiece prism X Curvature (Ci) Y Curvature (cy) Y Cnnic Constant (KY) th Grder Symmetric Coefficient (AR) ~ E3-06 6th Order Symmetric Coefficient (BR) th Cinder Symmetric Coefficient (CR) ~ E th Order Symmetric Cnefficient (DR) X Conic Constant (Kxi ~ E-01 4th Order Asymmetric (Inefficient (AP) th Order Asymmetric Coefficient (BF) E-Ol 8th Order Asymmetric Coefficient (CP) th Grater Asymmetric Coefficient (DP) E-01 Fig.8

15 Patent Application Publication Jun. 26, 2014 Sheet 14 0f 25 US 2014/ A1 Tabie 2: Opticai surface prescription of surface 2 of the eyepiece prism X Cu rveture (cx) Y Curvature (Cy) Y Conic Constant (KY) ~ OO 4th Order Symmetric Coefficient (AR) th Order Symmetric Coefficient (BR) th Order Symmetric Coefficient (CR) th Order Symmetric Coefficient (DR) X Conic Constant (KX) 4th Order Asymmetric Coefficient (AP) ~ E E ?84E+02 6th Order Asymmetric Coefficient (SP) th Order Asymmetric Coefficient (CP) th Order Asymmetric Coefficient (DP) OE+OO Fig.14

16 Patent Application Publication Jun. 26, 2014 Sheet 15 0f 25 US 2014/ A1 Tabie 3: Opticai surface prescription 02 surface 3 0f the eyepiece prism X Curvature (cy) Y Curvature (cy) Y Ccmic Constant (Pi- 1) le ~ E+00 4th Order Symmetric Coef?cient (AR) th Order Symmetric Coefficient (BR) E'15 81h Order Symmetric Coefficient (CR) th Order Symmetric Coefficient (DR) X Conic Constant (KX) 4th Order Asymmetric Ceefficient (AP) 6th Grder Asymmetric Coefficient (8P) 81h Order Asymmetric Coefficient (CP) E+OO 3.3?5134E+OO E-e-01 ~ E-Gl 10th Order Asymmetric Coef?cient (DP) ~ ~01 FigiS

17 Patent Application Publication Jun. 26, 2014 Sheet 16 0f 25 US 2014/ A1 Tabie 4: Position and orientatien parameters of the eyepiece prism Surface Reference Position Orientation X(mm) Y(mm) 2(mm) RX(Degree) 51 Exit Pupil { Exit Pupii S3 Exit Pupii Notes: The orientations of the surface related to Y and Z 2065 are zerosw

18 Patent Application Publication Jun. 26, 2014 Sheet 17 0f 25 US 2014/ A1 Table 5: Optical surface prescription of surface 4 0f the objective prism X Curvature (ex) Y Curvature icy) ~2~ Y Conic Constant (Ky) 4th Order Symmetric Coef?cient (AR) 6th Order Symmetric Ceef?cient (BR) 8th Order Symmetric Coefficient (CR) ~1.0000QOE E E~ E'02 10th Order Symmetric Coefficient (DR) X Conic Constant (Kx) dbgoooohol 4th Order Asymmetric Ceefiicient (AP) h Order Asymmetric Coefficient (8P) ZE+OO 8th Order Asymmetric Coefficient (C?) 1~ th Order Asymmetric Coefficient (DP)

19 Patent Application Publication Jun. 26, 2014 Sheet 18 0f 25 US 2014/ A1 Table 6: thicai surface prescriptien of surface 5 0f the abjeetive prism X Curvature (ex) Y Curvature icy) ~3.8G9807E-04 ~8.?'64721E 33 Y Conic Constant (Ky) th Order Symmetric Coefficient (AR) th Order Symmetric Coefficient (BR) ~ E-11 8th Order Symmetric (Ioefficient (CR) th Order Symmetric Coefficient (DR) OE-14 X Cenic Constant (Ky) th Grder Asymmetric Coefficient (AP) th Order Asymmetric Coefficient (SP) th Order Asymmetric (Inefficient (CP) l?th Order Asymmetric Coefficient (DP) Fig.18

20 Patent Application Publication Jun. 26, 2014 Sheet 19 0f 25 US 2014/ A1 Table 7: Optical surface prescription 0f surface 6 of the eyepiece prism X Curvature (cx) Y Curvature (CY) Y Conic Constant (KY) ~ E-03 LOOOOOOE+01 4th Order Symmetric Coefficient (AR) th Order Symmetric Coef?cient (BR) th Order Symmetric Coefficient (CR) th Order Symmetric Ceetficierit (DR) X Conic Ccinstant (KX) ~ E+OO 4th Order Asymirietric Coef?cient (AP) th Order Asymmetric Coefficient (8P) 8th Order Asymrrietric Coef?cient (CF) 10th Order Asymmetric Coefficient (DP) E E+OO 8.762SSlE-Ol Fig.19

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