EP0409618A2
Expired / Lapsed
EP
⏱️ 0.0 years remaining
An image display apparatus
Assignee: Sharp Corp
•
Filing: 1990-07-19
•
Granted: —
•
Expires: 2010-07-19
Abstract
Abstract An image display apparatus is disclosed which includes: an optical system including a light source and at least one projection lens; a display means for forming a display image, the display means including a non-luminescent display panel and a microlens array disposed on the light-incidence side of the display panel; and at least one projection lens for projecting the display image; wherein the display panel and the microlens array are combined with each other by means of an adhesive made of a transparent material. In cases where the microlens array is provided with color filters which are arranged so as to correspond to the microlenses of this array, the image display apparatus can provide a bright display of color images with an improved contrast. Moreover, when the display panel and the microlens array are combined with each other by means of an adhesive containing spacers, the image display apparatus has a high thermal reliability.
Inventors
- 👤 Toshiaki Takamatsu
- 👤 Shinichi Ogawa
- 👤 Masao Yoshikawa
- 👤 Hiroshi Hamada
- 👤 Noriko Watanabe
- 👤 Fumiaki Funada
Bibliographic Details
Application Number
—
Jurisdiction
EP
Data Source
google_patents
Last Synchronized
2026-11-09 14:04
CPC Classifications
G; G09; G09F; G09F13/00; H; H04; H04N; H04N9/00; H04N9/12; H04N9/31; H04N9/3102; H04N9/3105; H04N9/3108; G02; G02F; G02F1/00; G02F1/01; G02F1/13; G02F1/133; G02F1/1333; G02F1/1335; G02F1/133526; H04N5/00; H04N5/74; H04N5/7416; H04N5/7441
Claims Analysis
Total Claims: 12
Claim 1
Independent Claim
81 words
An image display apparatus comprising: an optical system including a light source and at least one projection lens; a display means for forming a display image, said display means including a non-luminescent display panel and a microlens array disposed on the light-incidence side of said display panel; and at least one projection lens for projecting the display image; wherein said display panel and said microlens array are combined with each other by means of an adhesive made of a transparent material.
Claim 2
Dependent Claim
81 words
An image display apparatus comprising: an optical system including a light source and at least one projection lens; a display means for forming a display image, said display means including a non-luminescent display panel and a microlens array disposed on the light-incidence side of said display panel; and at least one projection lens for projecting the display image; wherein said display panel and said microlens array are combined with each other by means of an adhesive made of a transparent material.
Claim 3
Dependent Claim
19 words
An image display apparatus according to claim 1, wherein said non-luminescent display panel is a liquid crystal display panel.
Claim 4
Dependent Claim
47 words
An image display apparatus according to claim 1, wherein said display panel has a plurality of picture elements arranged in a matrix and said microlens array has a plurality of microlenses arranged in a matrix so as to correspond to the picture elements of said display panel.
Claim 5
Dependent Claim
38 words
An image display apparatus according to claim 3, wherein said microlens array further has a plurality of color filters arranged so as to correspond to the microlenses, said color filters being made in at least three primary colors.
Claim 6
Dependent Claim
22 words
An image display apparatus according to claim 4, wherein said color filters are disposed on the light-incidence side of said microlens array.
Claim 7
Dependent Claim
22 words
An image display apparatus according to claim 4, wherein said color filters are disposed on the light-outgoing side of said microlens array.
Claim 8
Dependent Claim
21 words
An image display apparatus according to claim 4, wherein said color filters have a similar shape to that of said microlenses.
Claim 9
Dependent Claim
19 words
An image display apparatus according to claim 7, wherein the shapes of said microlenses and color filters are hexagonal.
Claim 10
Dependent Claim
15 words
An image display apparatus according to claim 1, wherein said adhesive contains spacers dispersed therein.
Claim 11
Dependent Claim
81 words
A display device for an image display apparatus in which the device is illuminated by light from a light source and comprises a two-dimensional array of picture elements to be controlled in accordance with the image to be displayed so as to produce an image beam for projection for formation of the display image, said device comprising a non-luminescent display panel and a microlens array attached to said display panel on the light-incidence side thereof by means of a transparent adhesive.
Claim 12
Dependent Claim
81 words
A display device for an image display apparatus in which the device is illuminated by light from a light source and comprises a two-dimensional array of picture elements to be controlled in accordance with the image to be displayed so as to produce an image beam for projection for formation of the display image, said device comprising a non-luminescent display panel and a microlens array attached to said display panel on the light-incidence side thereof by means of a transparent adhesive.
References Cited (Backward Citations)
No citation records indexed.
USPTO Annuity & Maintenance Windows
Maintenance schedule is calculated for granted US utility patents.