Light guide unit, image display device, and display apparatus
First Claim
Patent Images
1. An image display device, comprising:
- an image forming unit; and
a light guide unit, the light guide unit including;
a unitary light guide plate configured to guide light of an image formed in the image forming unit, wherein the unitary light guide plate has a thickness along a Z axis and a length along an X axis, and wherein the unitary light guide plate is configured to guide the light along the X axis;
a support member; and
one or more buffer members supporting the unitary light guide plate at, at least, a plurality of locations of the support member, wherein;
the unitary light guide plate has a first elastic modulus;
at least one buffer member of the one or more buffer members has a second elastic modulus selected to reduce image quality degradation caused by expansion or contraction of the unitary light guide plate, the second elastic modulus of the at least one buffer member being smaller than the first elastic modulus of the unitary light guide plate;
the unitary light guide plate is attached to the support member at a first location of the support member via the at least one buffer member; and
the unitary light guide plate is further attached to the support member at a second location of the support member via the at least one buffer member, the first and second locations being at opposite ends of the unitary light guide plate along the X axis.
1 Assignment
0 Petitions
Accused Products
Abstract
There is provided an image display device that comprises an image forming unit and a light guide unit.
The light guide unit includes a light guide plate configured to guide light of an image formed in the image forming unit, and a support member. The light guide plate is supported by one or more buffer members at, at least, a plurality of portions of the support member.
-
Citations
21 Claims
-
1. An image display device, comprising:
-
an image forming unit; and a light guide unit, the light guide unit including; a unitary light guide plate configured to guide light of an image formed in the image forming unit, wherein the unitary light guide plate has a thickness along a Z axis and a length along an X axis, and wherein the unitary light guide plate is configured to guide the light along the X axis; a support member; and one or more buffer members supporting the unitary light guide plate at, at least, a plurality of locations of the support member, wherein; the unitary light guide plate has a first elastic modulus; at least one buffer member of the one or more buffer members has a second elastic modulus selected to reduce image quality degradation caused by expansion or contraction of the unitary light guide plate, the second elastic modulus of the at least one buffer member being smaller than the first elastic modulus of the unitary light guide plate; the unitary light guide plate is attached to the support member at a first location of the support member via the at least one buffer member; and the unitary light guide plate is further attached to the support member at a second location of the support member via the at least one buffer member, the first and second locations being at opposite ends of the unitary light guide plate along the X axis. - View Dependent Claims (2, 3, 4, 5, 6, 7)
-
-
8. An image display device, comprising:
-
an image forming unit; and a light guide unit, the light guide unit including; a unitary light guide plate configured to guide light of an image formed in the image forming unit, wherein the unitary light guide plate has a thickness along a Z axis and a length along an X axis, and wherein the unitary light guide plate is configured to guide the light along the X axis; a support member; and a fixing member disposed between the unitary light guide plate and the support member, the fixing member being provided around the unitary light guide plate to fix the unitary light guide plate to the support member, wherein; the fixing member comprises at least one deformable buffer area adapted to reduce image quality degradation caused by expansion or contraction of the unitary light guide plate; the unitary light guide plate is fixed to the support member at a first location of the support member via the at least one deformable buffer area; and the unitary light guide plate is further fixed to the support member at a second location of the support member via the at least one deformable buffer area, the first and second locations being at opposite ends of the unitary light guide plate along the X axis. - View Dependent Claims (9, 10, 11)
-
-
12. An image display device, comprising:
-
an image forming unit; and a light guide unit, the light guide unit including; a light guide plate configured to guide light of an image formed in the image forming unit; a support member; and a fixing member disposed between the light guide plate and the support member, the fixing member being provided around the light guide plate to fix the light guide plate to the support member, wherein; the light guide plate comprises a deformable buffer area on an outer circumferential section, the deformable buffer area of the light guide plate being an integral part of the light guide plate but different in construction from a center portion of the light guide plate and being adapted to reduce image quality degradation caused by expansion or contraction of the light guide plate. - View Dependent Claims (13)
-
-
14. An image display device, comprising:
-
an image forming unit; and a light guide unit, the light guide unit including; a light guide plate configured to guide light of an image formed in the image forming unit; a support member; and a fixing member disposed between the light guide plate and the support member, the fixing member being provided around the light guide plate to fix the light guide plate to the support member, wherein; the support member comprises a deformable buffer area on an inner circumferential section, the deformable buffer area being an integral part of the support member and being adapted to reduce image quality degradation caused by expansion or contraction of the light guide plate. - View Dependent Claims (15)
-
-
16. A light guide unit, comprising:
-
a unitary light guide plate having a thickness along a Z axis and a length along an X axis, wherein the unitary light guide plate is configured to guide light along the X axis; a support member; and one or more buffer members supporting the unitary light guide plate at, at least, a plurality of locations of the support member, wherein; the unitary light guide plate has a first elastic modulus; at least one buffer member of the one or more buffer members has a second elastic modulus selected to reduce image quality degradation caused by expansion or contraction of the unitary light guide plate, the second elastic modulus of the at least one buffer member being smaller than the first elastic modulus of the unitary light guide plate; the unitary light guide plate is attached to the support member at a first location of the support member via the at least one buffer member; and the unitary light guide plate is further attached to the support member at a second location of the support member via the at least one buffer member, the first and second locations being at opposite ends of the unitary light guide plate along the X axis.
-
-
17. A light guide unit, comprising:
-
a unitary light guide plate having a thickness along a Z axis and a length along an X axis, wherein the unitary light guide plate is configured to guide light along the X axis; a support member; and a fixing member disposed between the unitary light guide plate and the support member, the fixing member being provided around the unitary light guide plate to fix the unitary light guide plate to the support member, wherein; the fixing member comprises at least one deformable buffer area adapted to reduce image quality degradation caused by expansion or contraction of the unitary light guide plate; the unitary light guide plate is fixed to the support member at a first location of the support member via the at least one deformable buffer area; and the unitary light guide plate is further fixed to the support member at a second location of the support member via the at least one deformable buffer area, the first and second locations being at opposite ends of the unitary light guide plate along the X axis.
-
-
18. A display apparatus, comprising:
-
a frame; and an image display device attached to the frame, the image display device including; an image forming unit, and a light guide unit, the light guide unit including; a unitary light guide plate configured to guide light of an image formed in the image forming unit, wherein the unitary light guide plate has a thickness along a Z axis and a length along an X axis, and wherein the unitary light guide plate is configured to guide the light along the X axis; a support member; and one or more buffer members supporting the unitary light guide plate at, at least, a plurality of locations of the support member, wherein; the unitary light guide plate has a first elastic modulus; at least one buffer member of the one or more buffer members has a second elastic modulus selected to reduce image quality degradation caused by expansion or contraction of the unitary light guide plate, the second elastic modulus of the at least one buffer member being smaller than the first elastic modulus of the unitary light guide plate; the unitary light guide plate is attached to the support member at a first location of the support member via the at least one buffer member; and the unitary light guide plate is further attached to the support member at a second location of the support member via the at least one buffer member, the first and second locations being at opposite ends of the unitary light guide plate along the X axis. - View Dependent Claims (19)
-
-
20. A display apparatus, comprising:
-
a frame; and an image display device attached to the frame, the image display device including; an image forming unit, and a light guide unit, the light guide unit including; a unitary light guide plate configured to guide light of an image formed in the image forming unit, wherein the unitary light guide plate has a thickness along a Z axis and a length along an X axis, and wherein the unitary light guide plate is configured to guide the light along the X axis; a support member; and a fixing member disposed between the unitary light guide plate and the support member, the fixing member being provided around the unitary light guide plate to fix the unitary light guide plate to the support member, wherein; the fixing member comprises at least one deformable buffer area adapted to reduce image quality degradation caused by expansion or contraction of the unitary light guide plate; the unitary light guide plate is fixed to the support member at a first location of the support member via the at least one deformable buffer area; and the unitary light guide plate is further fixed to the support member at a second location of the support member via the at least one deformable buffer area, the first and second locations being at opposite ends of the unitary light guide plate along the X axis. - View Dependent Claims (21)
-
Specification
-
- Resources
Litigation Campaign Assessment
Thank you for your request. You will receive a custom alert email when the Litigation Campaign Assessment is available.
×
-
Current AssigneeSony Corporation (Sony Group Corp.)
-
Original AssigneeSony Corporation (Sony Group Corp.)
-
InventorsHirano, Takaaki, Isobe, Hiroshi, Fukumoto, Koji
-
Primary Examiner(s)Tallman, Robert E.
-
Assistant Examiner(s)O'Neill, Gary W
-
Application NumberUS14/659,784Publication NumberTime in Patent Office1,568 DaysField of SearchUS Class CurrentCPC Class CodesG02B 2027/011 comprising device for corre...G02B 2027/0132 comprising binocular systemsG02B 2027/0161 characterised by the relati...G02B 2027/0174 holographicG02B 2027/0178 Eyeglass type eyeglass deta...G02B 27/0101 characterised by optical fe...G02B 27/0149 characterised by mechanical...G02B 27/0172 characterised by optical fe...G02B 27/0176 characterised by mechanical...G02B 6/0088 of the light guide or other...G02B 6/0093 Means for protecting the li...
