SU1742778A1

SU1742778A1 - Illuminating system for projector

Info

Publication number: SU1742778A1
Application number: SU894775182A
Authority: SU
Inventors: Михаил Юльянович Гаврилюк
Original assignee: М. Ю. Гаврилюк
Priority date: 1989-12-29
Filing date: 1989-12-29
Publication date: 1992-06-23

Abstract

Изобретение относитс к оптическим системам с отражающими поверхност ми и преломл ющими компонентами и позвол ет повысить световой поток путем увеличени коэффициента использовани энергии источника излучени , а также уменьшить выходной тепловой поток осветительных систем проекторов. Оптическа система содержит эллипсоидный отражатель 1 с внутренним интерференционным покрытием и с соотношением полуосей 1,5 а : b 2, в первом фокусе FI которого размещен источник 2 излучени , а второй фокус Fa расположен за плоскостью выходного зрачка с апертурным углом U2 90&deg;, а также четырехлинзовый конденсор 4 с величиной углового пол зрени , равной удвоенному апертурному углу эллипсоидного отражател 1, и теплофильтр 5, установленный между третьим и четвертым компонентами конденсора 4. 6 ил.The invention relates to optical systems with reflective surfaces and refractive components and allows to increase the luminous flux by increasing the utilization of the energy of the radiation source, as well as to reduce the output heat flux of the projectors' lighting systems. The optical system contains an ellipsoidal reflector 1 with an internal interference coating and a ratio of 1.5 a: b 2 semi-axes, in the first focus FI of which the radiation source 2 is placed, and the second focus Fa is located behind the exit pupil plane with an aperture angle of U2 90 °, and a four-lens condenser 4 with an angular field of view equal to twice the aperture angle of the ellipsoidal reflector 1, and a heat filter 5 mounted between the third and fourth components of the condenser 4. 6 Il.

Description

Фиг. IFIG. I

1one

/77/ 77

Фие.ЗFi.Z

-.H- S-.H- S

Фиг ЛFIG L

1 &S:M1 & S: M

Фаг 5Phage 5

а.Н:3 A.N: 3

Фиг 6Fig 6

Claims

Claim

A projector lighting system containing an ellipsoid reflector located on the optical axis, a light source located in its first focus, and a condenser, while the second focus of the ellipsoid reflector is located behind its exit pupil, and the angular field of view of the condenser is equal to twice the aperture angle of the ellipsoid reflector , characterized in that, in order to increase the luminous flux by increasing the utilization of the energy of the radiation source, as well as reducing the output heat flux, on the inside The front surface of the ellipsoid reflector is coated, and the ratio of the semiaxes of the ellipsoid reflector is 1.5 <a: b <2, while the output aperture angle of the ellipsoid reflector is U ₂ <90 °, and the condenser is made of four components, the third and fourth of which are made in the form of plano-convex lenses, between which the introduced heat filter is placed.

Fig.Z