Optical element unit
First Claim
1. An optical element unit comprising:
- an optical element group for projecting light along an optical axis of said optical element group and a housing having an inner housing part partly defining a first space and a light passageway between said inner housing part and a second space;
said inner housing part receiving said optical element group;
said optical element group comprising an ultimate optical element located in the region of said light passageway and being part of an ultimate optical element arrangement; and
a load relieving device being provided adjacent to said ultimate optical element arrangement, said load relieving device partly defining said first space and said second space and at least partly relieving said ultimate optical element arrangement from loads resulting from pressure differences between said first space and said second space.
2 Assignments
0 Petitions
Accused Products
Abstract
An optical element unit is provided comprising an optical element group for projecting light along an optical axis of the optical element group and a housing having an inner housing part partly defining a first space and a light passageway between the inner housing part and a second space. The inner housing part receives the optical element group. The optical element group comprises an ultimate optical element located in the region of the light passageway. A load-relieving device is provided adjacent to the ultimate optical element, the load relieving device partly defining the first space and the second space and at least partly relieving the ultimate optical element from loads resulting from pressure differences between the first space.
-
Citations
40 Claims
-
1. An optical element unit comprising:
-
an optical element group for projecting light along an optical axis of said optical element group and a housing having an inner housing part partly defining a first space and a light passageway between said inner housing part and a second space;
said inner housing part receiving said optical element group;
said optical element group comprising an ultimate optical element located in the region of said light passageway and being part of an ultimate optical element arrangement; and
a load relieving device being provided adjacent to said ultimate optical element arrangement, said load relieving device partly defining said first space and said second space and at least partly relieving said ultimate optical element arrangement from loads resulting from pressure differences between said first space and said second space. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9, 10, 11, 12, 13, 14, 15, 34)
-
-
16. An optical element unit comprising:
-
an optical element group for projecting light along an optical axis of said optical element group;
a housing; and
a cover device;
said housing having an inner housing part partly defining a first space and a light passageway between said first space and a second space, said inner housing part receiving said optical element group;
said optical element group comprising an ultimate optical element located in the region of said light passageway and having an optically used first surface;
said cover device being mounted to said housing and extending between said housing and said first surface of said ultimate optical element;
said cover device leaving a first surface part of said first surface of said ultimate optical element uncovered while covering a second surface part of said first surface of said ultimate optical element. - View Dependent Claims (17, 18, 19, 20, 21, 22, 23, 24, 25, 26)
-
-
27. An optical element unit comprising:
-
an optical element group for projecting light along an optical axis of said optical element group;
a housing; and
a sealing device;
said housing having an inner housing part partly defining a first space and a light passageway between said first space and a second space, said inner housing part receiving said optical element group;
said optical element group comprising an ultimate optical element located in the region of said light passageway and a further optical element;
said sealing device separating said first space from said second space;
said sealing device being located between said further optical element and said ultimate optical element such that said ultimate optical element is located within said second space;
said sealing device having at least a first translucent section;
- View Dependent Claims (28, 29, 30, 31, 32, 33)
-
-
35. A method of holding an optical element, comprising:
-
providing a housing having an inner housing part partly defining a first space and a light passageway between said inner housing part and a second space, a first pressure prevailing in said first space and a second pressure prevailing in said second space;
providing and holding an optical element in the region of said light passageway, said optical element mainly extending in a first plane, a first part of said optical element partly defining said first space and a second part of said optical element partly defining said second space;
separating said first space and said second space such that a projection of said first part of said optical element onto said first plane is smaller than a projection of said second part of said optical element onto said first plane. - View Dependent Claims (36, 37, 38)
-
-
39. A method of holding an optical element, comprising:
-
providing a housing having an inner housing part partly defining a first space and a light passageway between said inner housing part and a second space, a first pressure prevailing in said first space and a second pressure prevailing in said second space;
providing and holding an optical element in the region of said light passageway;
separating said first space and said second space in a pressure tight but at least partly translucent manner such that said optical element is entirely located within said second space. - View Dependent Claims (40)
-
Specification