KR20020095550A - 전자칠판용 스크린 - Google Patents
전자칠판용 스크린 Download PDFInfo
- Publication number
- KR20020095550A KR20020095550A KR1020010033596A KR20010033596A KR20020095550A KR 20020095550 A KR20020095550 A KR 20020095550A KR 1020010033596 A KR1020010033596 A KR 1020010033596A KR 20010033596 A KR20010033596 A KR 20010033596A KR 20020095550 A KR20020095550 A KR 20020095550A
- Authority
- KR
- South Korea
- Prior art keywords
- screen
- image
- lens unit
- substrate
- lenticular lens
- Prior art date
Links
- 238000009792 diffusion process Methods 0.000 claims abstract description 15
- 239000000758 substrate Substances 0.000 claims abstract description 14
- 239000000463 material Substances 0.000 claims abstract description 10
- 238000000034 method Methods 0.000 claims 1
- -1 polypropylene Polymers 0.000 description 3
- 229920005989 resin Polymers 0.000 description 3
- 239000011347 resin Substances 0.000 description 3
- 239000004743 Polypropylene Substances 0.000 description 2
- 238000002156 mixing Methods 0.000 description 2
- 229920001155 polypropylene Polymers 0.000 description 2
- 239000004593 Epoxy Substances 0.000 description 1
- 239000004698 Polyethylene Substances 0.000 description 1
- NIXOWILDQLNWCW-UHFFFAOYSA-N acrylic acid group Chemical group C(C=C)(=O)O NIXOWILDQLNWCW-UHFFFAOYSA-N 0.000 description 1
- 239000003795 chemical substances by application Substances 0.000 description 1
- 238000001125 extrusion Methods 0.000 description 1
- 238000004519 manufacturing process Methods 0.000 description 1
- 238000000465 moulding Methods 0.000 description 1
- 239000000049 pigment Substances 0.000 description 1
- 229920003229 poly(methyl methacrylate) Polymers 0.000 description 1
- 229920000515 polycarbonate Polymers 0.000 description 1
- 239000004417 polycarbonate Substances 0.000 description 1
- 229920000728 polyester Polymers 0.000 description 1
- 229920000573 polyethylene Polymers 0.000 description 1
- 229920000139 polyethylene terephthalate Polymers 0.000 description 1
- 239000005020 polyethylene terephthalate Substances 0.000 description 1
- 239000004926 polymethyl methacrylate Substances 0.000 description 1
- 229920002635 polyurethane Polymers 0.000 description 1
- 239000004814 polyurethane Substances 0.000 description 1
- 239000002994 raw material Substances 0.000 description 1
- 229920002050 silicone resin Polymers 0.000 description 1
- 229920003002 synthetic resin Polymers 0.000 description 1
- 239000000057 synthetic resin Substances 0.000 description 1
Classifications
-
- G—PHYSICS
- G03—PHOTOGRAPHY; CINEMATOGRAPHY; ANALOGOUS TECHNIQUES USING WAVES OTHER THAN OPTICAL WAVES; ELECTROGRAPHY; HOLOGRAPHY
- G03B—APPARATUS OR ARRANGEMENTS FOR TAKING PHOTOGRAPHS OR FOR PROJECTING OR VIEWING THEM; APPARATUS OR ARRANGEMENTS EMPLOYING ANALOGOUS TECHNIQUES USING WAVES OTHER THAN OPTICAL WAVES; ACCESSORIES THEREFOR
- G03B21/00—Projectors or projection-type viewers; Accessories therefor
- G03B21/10—Projectors with built-in or built-on screen
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B43—WRITING OR DRAWING IMPLEMENTS; BUREAU ACCESSORIES
- B43L—ARTICLES FOR WRITING OR DRAWING UPON; WRITING OR DRAWING AIDS; ACCESSORIES FOR WRITING OR DRAWING
- B43L1/00—Repeatedly-usable boards or tablets for writing or drawing
- B43L1/04—Blackboards
-
- G—PHYSICS
- G06—COMPUTING; CALCULATING OR COUNTING
- G06F—ELECTRIC DIGITAL DATA PROCESSING
- G06F3/00—Input arrangements for transferring data to be processed into a form capable of being handled by the computer; Output arrangements for transferring data from processing unit to output unit, e.g. interface arrangements
- G06F3/01—Input arrangements or combined input and output arrangements for interaction between user and computer
- G06F3/03—Arrangements for converting the position or the displacement of a member into a coded form
- G06F3/033—Pointing devices displaced or positioned by the user, e.g. mice, trackballs, pens or joysticks; Accessories therefor
- G06F3/0354—Pointing devices displaced or positioned by the user, e.g. mice, trackballs, pens or joysticks; Accessories therefor with detection of 2D relative movements between the device, or an operating part thereof, and a plane or surface, e.g. 2D mice, trackballs, pens or pucks
- G06F3/03545—Pens or stylus
Landscapes
- Physics & Mathematics (AREA)
- General Physics & Mathematics (AREA)
- Drawing Aids And Blackboards (AREA)
Abstract
Description
Claims (2)
- 내부에 영사기(3)가 구비되고, 영사기(3)에서 영상을 투사하면 전방에 구비된 스크린에 영상이 결상되도록 한 전자칠판에 있어서,상기 스크린(10)은내부에 확산재가 함유된 기재(11)와;상기 기재(11)의 영상기(3) 측면에 형성되고, 투사된 영상을 관찰자 측으로 수렴하는 수렴돌기(13b)가 다수개의 동심환형으로 형성된 프레넬 렌즈부(12)와;상기 기재(11)의 관찰자 측면에 형성되고, 수렴된 영상을 확산하기 위해 수직방향으로 길이방향을 가지며 단면형태가 융기된 형태가 되도록 한 확산돌기(15)가 다수개 배열 형성된 렌티큘러 렌즈부(14)와;상기 렌티큘러 렌즈부(14)의 전면에 평면이 되도록 몰딩되어, 렌티큘러 렌즈부(14)를 통해 결상된 영상 위에 전자펜으로 필기 가능하도록 한 필기부(16)로 이루어진 것을 특징으로 하는 전자칠판용 스크린.
- 제 1 항에 있어서, 상기 확산재가 함유된 기재(11)의 영사기(3) 측면에는 프레넬 렌즈부(12)가 형성되고, 관찰자 측면은 평면으로 가공되어 필기부(17)를 형성하므로써 기재(11)에 결상된 영상 위에 전자펜으로 필기 가능하도록 한 것을 특징으로 하는 전자칠판용 스크린.
Priority Applications (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
KR1020010033596A KR20020095550A (ko) | 2001-06-14 | 2001-06-14 | 전자칠판용 스크린 |
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
KR1020010033596A KR20020095550A (ko) | 2001-06-14 | 2001-06-14 | 전자칠판용 스크린 |
Related Child Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
KR2020010017816U Division KR200247382Y1 (ko) | 2001-06-14 | 2001-06-14 | 전자칠판용 스크린 |
Publications (1)
Publication Number | Publication Date |
---|---|
KR20020095550A true KR20020095550A (ko) | 2002-12-27 |
Family
ID=27709215
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
KR1020010033596A KR20020095550A (ko) | 2001-06-14 | 2001-06-14 | 전자칠판용 스크린 |
Country Status (1)
Country | Link |
---|---|
KR (1) | KR20020095550A (ko) |
Citations (5)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JPS55135830A (en) * | 1979-04-12 | 1980-10-23 | Matsushita Electric Ind Co Ltd | Transmission type screen |
JPS58126523A (ja) * | 1982-01-25 | 1983-07-28 | Mitsubishi Rayon Co Ltd | 背面投影スクリ−ン |
JPS61190325A (ja) * | 1985-02-20 | 1986-08-25 | Yuupu:Kk | 透過型映写幕 |
JPH07199357A (ja) * | 1993-12-28 | 1995-08-04 | Fujitsu Ltd | 背面投射型表示装置 |
KR20020003667A (ko) * | 2000-06-24 | 2002-01-15 | 김병일 | 후면 투사 스크린 |
-
2001
- 2001-06-14 KR KR1020010033596A patent/KR20020095550A/ko not_active Application Discontinuation
Patent Citations (5)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JPS55135830A (en) * | 1979-04-12 | 1980-10-23 | Matsushita Electric Ind Co Ltd | Transmission type screen |
JPS58126523A (ja) * | 1982-01-25 | 1983-07-28 | Mitsubishi Rayon Co Ltd | 背面投影スクリ−ン |
JPS61190325A (ja) * | 1985-02-20 | 1986-08-25 | Yuupu:Kk | 透過型映写幕 |
JPH07199357A (ja) * | 1993-12-28 | 1995-08-04 | Fujitsu Ltd | 背面投射型表示装置 |
KR20020003667A (ko) * | 2000-06-24 | 2002-01-15 | 김병일 | 후면 투사 스크린 |
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Patent event code: PA01091R01D Comment text: Patent Application Patent event date: 20010614 |
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Patent event date: 20040206 Comment text: Decision to Refuse Application Patent event code: PE06012S01D Patent event date: 20030825 Comment text: Notification of reason for refusal Patent event code: PE06011S01I |