KR930004831Y1 - Lens device of projection tv - Google Patents
Lens device of projection tv Download PDFInfo
- Publication number
- KR930004831Y1 KR930004831Y1 KR2019890005469U KR890005469U KR930004831Y1 KR 930004831 Y1 KR930004831 Y1 KR 930004831Y1 KR 2019890005469 U KR2019890005469 U KR 2019890005469U KR 890005469 U KR890005469 U KR 890005469U KR 930004831 Y1 KR930004831 Y1 KR 930004831Y1
- Authority
- KR
- South Korea
- Prior art keywords
- lamp
- light
- projection
- lens
- condensing
- Prior art date
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Classifications
-
- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04N—PICTORIAL COMMUNICATION, e.g. TELEVISION
- H04N9/00—Details of colour television systems
- H04N9/12—Picture reproducers
- H04N9/31—Projection devices for colour picture display, e.g. using electronic spatial light modulators [ESLM]
- H04N9/3141—Constructional details thereof
- H04N9/315—Modulator illumination systems
- H04N9/3155—Modulator illumination systems for controlling the light source
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- 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
- G03B21/14—Details
- G03B21/20—Lamp housings
- G03B21/206—Control of light source other than position or intensity
-
- 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
- G03B21/14—Details
- G03B21/28—Reflectors in projection beam
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- Physics & Mathematics (AREA)
- General Physics & Mathematics (AREA)
- Engineering & Computer Science (AREA)
- Multimedia (AREA)
- Signal Processing (AREA)
- Projection Apparatus (AREA)
Abstract
내용 없음.No content.
Description
제1도는 본 고안 장치의 구성 및 작용을 설명하기 위한 단면도.1 is a cross-sectional view for explaining the configuration and operation of the device.
제2도는 종래 투사용 램프의 렌즈형 집광장치를 설명하기 위한 단면도.2 is a cross-sectional view for explaining a lens-type light collecting device of a conventional projection lamp.
본 고안은 투사(PROJECTION) TV 수상기에 설치되는 투사용 램프의 반사형 집광장에 관한 것으로서 특히, 램프의 후방에 설치되는 비구면 반사경의 주면이 램프의 중심선과 일치되도록 설치하고, 램프의 전방에는 두 개의 환띠형 구면 반사경을 설치하되 두 개의 환띠형 구면 반사경은 각각 램프를 중심으로 소정의 각을 갖도록하여 램프의 집광 효율을 높힐 수 있도록 한 투사 TV용 집광보강 장치에 관한 것이다.The present invention relates to a reflective focusing field of a projection lamp installed on a projection TV receiver. In particular, the main surface of an aspherical reflector installed at the rear of the lamp coincides with the center line of the lamp. The present invention relates to a condensing reinforcement apparatus for projection TVs, in which two annular spherical reflectors are installed, and two annular spherical reflectors each have a predetermined angle around the lamp to increase the condensing efficiency of the lamp.
종래의 렌즈형 집광 장치는 제2도에 도시된 바와 같이 램프(31)의 후방에는 구면반사경(32)을 설치하고, 전방에는 집광렌즈(33,34)를 소정거리 두고 설치하여서된 것으로서, 여기서 구면반사경(32)은 램프(31)에서의 빛이 구면 반사경(32)으로부터 반사될 때 평행하게 반사하도록 하고, 이렇게 평행으로 반사된 빛과 램프(31)에서 직접적으로 투사되는 빛을 여러장의 렌즈로된 집광렌즈(33)로서 집광하여 통과시킨다.In the conventional lens-type light collecting device, as shown in FIG. 2, a spherical reflector 32 is provided at the rear of the lamp 31, and the light collecting lenses 33 and 34 are disposed at a predetermined distance in the front. The spherical reflector 32 reflects the light in the lamp 31 in parallel when it is reflected from the spherical reflector 32, and the light reflected by the parallel light and the light directly projected from the lamp 31 are several lenses. The light is collected and passed through as the condensing lens 33.
또한, 잡광렌즈(34)는 대체적으로 집광렌즈(33)를 통해 평행하게 입사된 램프(31)의 빛을 LCD 패널(35)을 통해 투사렌즈(36)에 집속시키는 필드렌즈 역할을 하게 된다. 그러나 램프(31)에서 발생된 빛중 유효 입사각(α)이 투사되는 부분의 빛만 이용하게 되므로서 집광효율이 떨어지는 단점이 있다.In addition, the condenser lens 34 generally serves as a field lens for condensing the light of the lamp 31 incident in parallel through the condenser lens 33 to the projection lens 36 through the LCD panel 35. However, since only the light of the part of the light generated by the lamp 31 to which the effective incident angle α is projected is used, there is a disadvantage in that the light collection efficiency is lowered.
이와 같은 문제점을 해결하기 위해 램프(31)와 집광렌즈(33)와의 거리를 가깝게하여 입사각(α)을 크게 할 수 있으나 이렇게할 경우 집광렌즈(33)의 비구면 설계가 매우 어렵고, 렌즈면에서의 반사광이 크게되어 빛의 손실이 커지는 단점이 있다.To solve this problem, the distance between the lamp 31 and the condenser lens 33 can be increased to increase the angle of incidence α. However, in this case, the aspherical design of the condenser lens 33 is very difficult, There is a disadvantage in that the reflected light is increased so that the loss of light increases.
본 고안은 이와 같은 종래의 단점을 해결하기 위하여 램프의 후방에 설치되는 비구면 반사경의 주면의 중심점에 램프를 일치시키고, 램프의 전방 측면에는 크기가 다른 두 개의 환띠형 구면 반사경을 설치하되 두 개의 환띠형 구면 반사경의 중심점에 램프가 위치되도록하되 서로 다른 소정각을 갖는 위치에 설치하여 유효입사각을 제외한 부분으로 유출되는 빛을 접속시켜 램프에서 발생된 빛의 집광효율을 높일 수 있도록 한 투사 TV용 집광 보강 장치를 제공하는 것을 목적으로 하며, 이하 첨부된 도면을 참조하여 본 고안의 구성 및 작용효과를 상세히 설명하면 다음과 같다.The present invention coincides the lamp with the center point of the main surface of the aspherical reflector installed in the rear of the lamp to solve the conventional disadvantages, and two annular spherical reflectors of different sizes are installed on the front side of the lamp, Condensing for projection TVs to ensure that the lamps are located at the center of the strip-shaped spherical reflector, but installed at locations with different predetermined angles to connect the light exiting to areas other than the effective incident angle to increase the light condensing efficiency of the light generated from the lamps. An object of the present invention is to provide a reinforcing device, and the configuration and operation effects of the present invention are described in detail below with reference to the accompanying drawings.
제1도에 의하면 본 고안 장치는 비구면 반사경(2)의 중심점에 램프(1)를 설치하고, 비구면 반사경(2)의 앞쪽에 중심점이 다른 두 개의 환띠형 구면 반사경(3,4)를 설치하되 환띠형 구면 반사경(3,4)의 중심점에는 램프(1)가 위치되도록 설치하여된 것이므로, 여기서 미설명 부호 7 : 집광렌즈, 8 : LCD 패널 또는 감광필름, 9 : 투사 렌즈 이다.According to FIG. 1, the inventive device installs a lamp 1 at a center point of the aspherical reflector 2, and installs two annular spherical reflectors 3 and 4 having different center points in front of the aspherical reflector 2. Since the lamp 1 is installed at the center point of the annular spherical reflectors 3 and 4, reference numeral 7 denotes a condenser lens, an 8 LCD panel or a photosensitive film, and 9 a projection lens.
이와 같은 구성으로된 본 고안 장치의 작용효과는 먼저 램프(1)에서 방사된 빛중 후방으로 (입체각 약 2π 정도) 방사되는 빛은 비구면 반사경(2)에 의해 반사되어 전방에 있는 집광렌즈(7)에 평행으로 전달되고, 램프(1)의 측면으로 방사되는 빛은 각각 소정각(γ,β)의 넓이고 설치된 두 개의 환띠형 구면 반사경(3,4)에 의해 램프(1)의 중심점으로 되반사됨에 따라 비구면 반사경(2)에서는 이되반사된 빛을 다시 전방으로 평행하게 전달시키게 된다.The effect of the device of the present invention having such a configuration is that the light emitted from the lamp (1) to the rear (about 2π of stereoscopic angle) is emitted by the aspherical reflector (2) and the front condensing lens (7) The light transmitted parallel to and radiated to the side of the lamp 1 is centered on the lamp 1 by two wide annular spherical reflectors 3 and 4 of a predetermined angle (γ, β), respectively. As reflected, the aspherical reflector 2 transmits the reflected light back to the front in parallel.
따라서 종래에는 램프(1)의 빛이 유효입사각(α)을 제외하고는 유실 되었으나, 본 고안 장치에 의하면 측방으로 유실되던 램프(1)의 빛도 되반사시켜 집광렌즈(7)에 평행하게 전달하게 되므로서 집광효율을 매우 높일수 있다.Therefore, although the light of the lamp 1 is conventionally lost except for the effective incident angle α, according to the device of the present invention, the light of the lamp 1, which has been lost laterally, is also reflected back and transmitted in parallel to the condensing lens 7. As a result, the light collecting efficiency can be greatly increased.
이론적으로 입사각(α=γ)을 45°로 하면배 정도나 빛을 더 이용할 수 있게되어 보다 좋은 집광효율을 나타낼 수 있는 것이다.Theoretically, if the angle of incidence (α = γ) is 45 ° More times more light can be used to show better light collection efficiency.
한편, 환띠형 구면 반사경을 3개이상 설치할 수도 있다.In addition, three or more annular spherical reflectors can be provided.
이상에서 설명한 바와 같이 본 고안 장치에 의하면 종래의 렌즈형 집광장치에 비해 월등히 램프의 효율을 높일수 있어 램프에서 소모하는 소비전력을 줄일 수 있고, 더욱이 집광렌즈를 하나만 설치하면 됨에 따라 공간을 줄일 수 있음과 동시에 생산원가를 줄일 수 있다.As described above, according to the device of the present invention, the efficiency of the lamp can be greatly improved compared to the conventional lens type light concentrator, and thus the power consumption of the lamp can be reduced, and the space can be reduced by installing only one light collecting lens. At the same time, production costs can be reduced.
Claims (1)
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| KR2019890005469U KR930004831Y1 (en) | 1989-04-27 | 1989-04-27 | Lens device of projection tv |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| KR2019890005469U KR930004831Y1 (en) | 1989-04-27 | 1989-04-27 | Lens device of projection tv |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| KR900019574U KR900019574U (en) | 1990-11-09 |
| KR930004831Y1 true KR930004831Y1 (en) | 1993-07-23 |
Family
ID=19285615
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| KR2019890005469U KR930004831Y1 (en) | 1989-04-27 | 1989-04-27 | Lens device of projection tv |
Country Status (1)
| Country | Link |
|---|---|
| KR (1) | KR930004831Y1 (en) |
-
1989
- 1989-04-27 KR KR2019890005469U patent/KR930004831Y1/en not_active IP Right Cessation
Also Published As
| Publication number | Publication date |
|---|---|
| KR900019574U (en) | 1990-11-09 |
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