DLP optical system
First Claim
1. A DLP (digital light processing) optical system comprising:
- a lamp unit for providing light;
an optical engine unit optically connected with the lamp unit, having optical parts for converting light incident from the lamp unit into an image signal therein, and including a primary lens for transmitting the image signal;
a DMD (digital micro mirror device) for reflecting the image signal transmitted from the primary lens;
a prism formed closely to the DMD, for adjusting a path of light;
a projection lens for projecting an on-beam of light from the prism that contributes to image forming onto a screen; and
a light-blocking part provided on an incident side of the projection lens, for transmitting only the on-beam and shielding at least light of a flat state region located between the on-beam and an off-beam.
1 Assignment
0 Petitions
Accused Products
Abstract
A DLP optical system is provided. The DLP optical system includes a lamp unit, an optical engine unit, a DMD, a prism, a projection lens, and a light-blocking part. The lamp unit provides light, and the optical engine unit is optically connected with the lamp unit, has optical parts for converting light incident from the lamp unit into an image signal therein, and includes a primary lens for transmitting the image signal. The DMD reflects the image signal transmitted from the primary lens, and the prism is formed closely to the DMD to adjust a path of light. The projection lens projects an on-beam of light from the prism that contributes to forming of an image onto a screen. The light-blocking part is provided on an incident side of the projection lens to transmit only the on-beam and shields light of a flat state region located between an on-beam and an off-beam.
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Citations
18 Claims
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1. A DLP (digital light processing) optical system comprising:
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a lamp unit for providing light;
an optical engine unit optically connected with the lamp unit, having optical parts for converting light incident from the lamp unit into an image signal therein, and including a primary lens for transmitting the image signal;
a DMD (digital micro mirror device) for reflecting the image signal transmitted from the primary lens;
a prism formed closely to the DMD, for adjusting a path of light;
a projection lens for projecting an on-beam of light from the prism that contributes to image forming onto a screen; and
a light-blocking part provided on an incident side of the projection lens, for transmitting only the on-beam and shielding at least light of a flat state region located between the on-beam and an off-beam. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9, 10, 11)
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12. A DLP optical system comprising:
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a lamp unit for providing light;
an optical engine unit for converting light incident from the lamp unit into an image signal;
a DMD for selectively reflecting an image signal incident from the optical engine unit to an on-beam region;
a prism for adjusting a path of light incident from the DMD;
a projection lens for projecting light from the prism onto a screen;
an engine body for receiving at least the prism;
an engine cover provided on an upper side of the engine body, for protecting parts contained inside the engine cover; and
a light-blocking part provided in an interval part between a light-emitting part of the prism and a light-incident part of the projection lens, for shielding at least light of a flat state region to improve a contrast of an image. - View Dependent Claims (13, 14, 15, 16, 17)
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18. A DLP optical system comprising:
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a lamp unit;
an optical engine unit for converting light incident from the lamp unit into an image signal;
a DMD for selectively reflecting an image signal incident from the optical engine unit to an on-beam region, an off-beam region, a flat state region formed between the on-beam region and the off-beam region; and
a light-blocking part for blocking light of the flat state region among light reflected by the DMD.
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Specification