阅读说明：本技术 光调制装置 (Light modulation device ) 是由 诺伯特·莱斯特 于 2019-07-01 设计创作，主要内容包括：本发明涉及一种用于线性偏振入射光的复值调制的光调制装置,该光调制装置包括第一光调制器(12)、随后设置的第二光调制器(13)和至少一个偏振器(14),其中第一光调制器(12)和第二光调制器(13)配置为相位调制器,其中第一光调制器(12)的调制轴(21)与第二光调制器(13)的调制轴(21)成角度地排列,其中入射在第一光调制器(12)上的光(10)的偏振方向(20)和偏振器(14)的偏振方向(20)相对于第一光调制器(12)的调制轴(21)和第二光调制器(13)的调制轴(21)分别以预定的非90°的角度排列。(The invention relates to a light modulation device for the complex-valued modulation of linearly polarized incident light, comprising a first light modulator (12), a second light modulator (13) arranged subsequently and at least one polarizer (14), wherein the first light modulator (12) and the second light modulator (13) are configured as phase modulators, wherein a modulation axis (21) of the first light modulator (12) is arranged at an angle to a modulation axis (21) of the second light modulator (13), wherein a polarization direction (20) of light (10) incident on the first light modulator (12) and a polarization direction (20) of the polarizer (14) are arranged at a predetermined angle other than 90 DEG with respect to the modulation axis (21) of the first light modulator (12) and the modulation axis (21) of the second light modulator (13), respectively.)

1. Light modulation device for complex-valued modulation of linearly polarized incident light (10), comprising a first light modulator (12), a subsequently arranged second light modulator (13) and at least one polarizer (14), wherein the first optical modulator (12) and the second optical modulator (13) are configured as phase modulators, wherein the modulation axis (21) of the first light modulator (12) is arranged at an angle to the modulation axis (21) of the second light modulator (13), and wherein the polarization direction (20) of light (10) incident on the first light modulator (12) and the polarization direction (20) of the polarizer (14) are arranged at a predetermined angle different from 90 ° with respect to the modulation axis (21) of the first light modulator (12) and the modulation axis (21) of the second light modulator (13), respectively.

2. A light modulation device as claimed in claim 1, characterized in that the angle between the modulation axis (21) of the first light modulator (12) and the modulation axis (21) of the second light modulator (13) is between 60 ° and 120 °, preferably between 80 ° and 100 °, particularly preferably 90 °.

3. A light modulation device according to claim 1 or 2, characterized in that the polarization direction (20) of the polarizer (14) is aligned at an angle between 80 ° and 100 °, preferably at an angle between 85 ° and 95 °, particularly preferably vertically, with respect to the polarization direction (20) of the light (10) incident on the first light modulator (12), or the polarization direction (20) of the polarizer (14) is aligned at an angle between-10 ° and +10 °, preferably at an angle between-5 ° and +5 °, particularly preferably parallel, with respect to the polarization direction (20) of the light (10) incident on the first light modulator (12).

4. A light modulation device according to one of claims 1-3, characterized in that the predetermined angle between the polarization direction (20) of the light (10) incident on the first light modulator (12) and the modulation axis (21) of the first light modulator (12) is between 30 ° and 60 °, preferably between 40 ° and 50 °, particularly preferred 45 °.

5. A light modulation device as claimed in one of claims 1 to 4, characterized in that a further polarizer (11) is arranged before the first light modulator (12) in the propagation direction of the light.

6. A light modulation device according to one of claims 1-5, characterized in that the first light modulator (12) and the second light modulator (13) are each configured as a controllable birefringent liquid crystal layer.

7. A light modulation device according to one of claims 1-6, characterized in that for the first light modulator (12) and the second light modulator (13), respectively, a phase shift can be adjusted within a range of at least 2 π.

8. A light modulation device according to one of claims 1-7, characterized in that the first light modulator (12) and the second light modulator (13) are directly connected to each other.

9. A light modulation device according to one of claims 1-8, characterized in that the first light modulator (12) and the second light modulator (13) have at least one common substrate (15).

10. Method for complex-valued modulation of linearly polarized light (10), comprising a first light modulator (12), a subsequently arranged second light modulator (13) and at least one polarizer (14), wherein a light component of the light (10) oscillating in the direction of a modulation axis (21) of the first light modulator (12) can be phase-delayed adjustably by the first light modulator (12), a light component of the light (10) oscillating in the direction of a modulation axis (21) of the second light modulator (13) can be phase-delayed adjustably by the second light modulator (13), wherein the modulation axis (21) of the first light modulator (12) is arranged transversely, in particular perpendicularly, with respect to the modulation axis (21) of the second light modulator (13), and the light (10) emerging from the second light modulator (13) is arranged by an angle other than 90 ° with respect to the modulation axis (21) Said polarizers (14) of the columns are linearly polarized.

11. A method according to claim 10, characterized in that the phase of the light (10) emerging from the polarizer (14) with equal amplitude is modified in such a way that the phase delay of the light component modulated by the first light modulator (12) and the light component modulated by the second light modulator (13) is modified equally.

12. A method according to claim 10 or 11, characterized in that for the amplitude of the light (10) emerging from the polarizer (14) with equal phase, the modification is made in such a way that the phase delay of the light component modulated by the first light modulator (12) and the phase delay of the light component modulated by the second light modulator (13) modify inversely the same amplitude.

13. Display device, in particular holographic display device, for representing a two-dimensional and/or three-dimensional scene, wherein the display device comprises a light modulation device according to one of claims 1 to 9.

14. A display device as claimed in claim 13, characterized in that an illumination device is assigned to the display device, which illumination device emits coherent or linearly polarized coherent light (10).