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1. (WO2018220265) PROJECTION OBJECTIVE AND WAVEGUIDE DISPLAY DEVICE
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Pub. No.: WO/2018/220265 International Application No.: PCT/FI2018/050370
Publication Date: 06.12.2018 International Filing Date: 18.05.2018
IPC:
G02B 27/01 (2006.01) ,G02B 27/00 (2006.01) ,G02B 13/22 (2006.01) ,G02B 9/14 (2006.01) ,G02B 27/42 (2006.01) ,G02B 5/18 (2006.01)
G PHYSICS
02
OPTICS
B
OPTICAL ELEMENTS, SYSTEMS, OR APPARATUS
27
Other optical systems; Other optical apparatus
01
Head-up displays
G PHYSICS
02
OPTICS
B
OPTICAL ELEMENTS, SYSTEMS, OR APPARATUS
27
Other optical systems; Other optical apparatus
G PHYSICS
02
OPTICS
B
OPTICAL ELEMENTS, SYSTEMS, OR APPARATUS
13
Optical objectives specially designed for the purposes specified below
22
Telecentric objectives or lens systems
G PHYSICS
02
OPTICS
B
OPTICAL ELEMENTS, SYSTEMS, OR APPARATUS
9
Optical objectives characterised both by the number of the components and their arrangements according to their sign, i.e. + or
12
having three components only
14
arranged + +
G PHYSICS
02
OPTICS
B
OPTICAL ELEMENTS, SYSTEMS, OR APPARATUS
27
Other optical systems; Other optical apparatus
42
Diffraction optics
G PHYSICS
02
OPTICS
B
OPTICAL ELEMENTS, SYSTEMS, OR APPARATUS
5
Optical elements other than lenses
18
Diffracting gratings
Applicants:
DISPELIX OY [FI/FI]; Metsänneidonkuja 6 02130 Espoo, FI
Inventors:
AIKIO, Mika; FI
Agent:
SEPPO LAINE OY; Itämerenkatu 3 A 00180 Helsinki, FI
Priority Data:
2017550802.06.2017FI
Title (EN) PROJECTION OBJECTIVE AND WAVEGUIDE DISPLAY DEVICE
(FR) OBJECTIF DE PROJECTION ET DISPOSITIF D'AFFICHAGE À GUIDE D'ONDES
Abstract:
(EN) The invention concerns a projection objective and a waveguide display. The objective is adapted to project an image from a first plane (20A-20E) to a second plane (10A-10E) and comprises in order from the second plane a first optical element group (G1) having a positive effective focal length, a second optical element group (G2) placed between the first plane and the first optical element group and having a negative effective focal length, and a third optical element group (G3) placed between the first plane and the second optical element group and having a positive effective focal length. Counting from the second plane, the first refractive surface of the second optical element group is concave towards the second plane and the second refractive surface of the third optical element group is convex towards the first plane. The objective suits well for projecting images to diffractive optical displays.
(FR) L'invention concerne un objectif de projection et un affichage à guide d'ondes. L'objectif est conçu pour projeter une image depuis un premier plan (20A-20E) vers un second plan (10A-10E) et comprend, dans l'ordre à partir du second plan, un premier groupe d'éléments optiques (G1) ayant une longueur focale effective positive, un deuxième groupe d'éléments optiques (G2) placé entre le premier plan et le premier groupe d'éléments optiques et ayant une longueur focale effective négative, et un troisième groupe d'éléments optiques (G3) placé entre le premier plan et le deuxième groupe d'éléments optiques et ayant une longueur focale effective positive. Vues depuis le second plan, la première surface de réfraction du deuxième groupe d'éléments optiques est concave vers le second plan et la seconde surface de réfraction du troisième groupe d'éléments optiques est convexe vers le premier plan. L'objectif convient bien pour projeter des images sur des dispositifs d'affichage optiques à diffraction.
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Designated States: AE, AG, AL, AM, AO, AT, AU, AZ, BA, BB, BG, BH, BN, BR, BW, BY, BZ, CA, CH, CL, CN, CO, CR, CU, CZ, DE, DJ, DK, DM, DO, DZ, EC, EE, EG, ES, FI, GB, GD, GE, GH, GM, GT, HN, HR, HU, ID, IL, IN, IR, IS, JO, JP, KE, KG, KH, KN, KP, KR, KW, KZ, LA, LC, LK, LR, LS, LU, LY, MA, MD, ME, MG, MK, MN, MW, MX, MY, MZ, NA, NG, NI, NO, NZ, OM, PA, PE, PG, PH, PL, PT, QA, RO, RS, RU, RW, SA, SC, SD, SE, SG, SK, SL, SM, ST, SV, SY, TH, TJ, TM, TN, TR, TT, TZ, UA, UG, US, UZ, VC, VN, ZA, ZM, ZW
African Regional Intellectual Property Organization (ARIPO) (BW, GH, GM, KE, LR, LS, MW, MZ, NA, RW, SD, SL, ST, SZ, TZ, UG, ZM, ZW)
Eurasian Patent Office (AM, AZ, BY, KG, KZ, RU, TJ, TM)
European Patent Office (EPO) (AL, AT, BE, BG, CH, CY, CZ, DE, DK, EE, ES, FI, FR, GB, GR, HR, HU, IE, IS, IT, LT, LU, LV, MC, MK, MT, NL, NO, PL, PT, RO, RS, SE, SI, SK, SM, TR)
African Intellectual Property Organization (BF, BJ, CF, CG, CI, CM, GA, GN, GQ, GW, KM, ML, MR, NE, SN, TD, TG)
Publication Language: English (EN)
Filing Language: English (EN)