Optical module for simultaneously focusing on two fields of view
First Claim
1. An optical module, comprisinga semiconductor element (4) having a sensitive surface (14) that is sensitive to electromagnetic radiation andan objective (1) for projecting electromagnetic radiation onto the sensitive surface (14) of the semiconductor element (4),characterized in that an optical element (11) having at least two plane-parallel sub-areas (11a, 11b) of different thicknesses is arranged either in the space between the objective (1) and the sensitive surface (14) of the semiconductor element (4) or between individual lenses of the objective in the entire cross-section of the beam path, such that a first distance range (8) is imaged in a first area of the sensitive surface (14) of the semiconductor element (4) by a first sub-area (11a) of the optical element (11), and a second distance range (9) is imaged in a second area of the sensitive surface (14) of the semiconductor element (4) by a second sub-area (11b) of the optical element (11).
1 Assignment
0 Petitions
Accused Products
Abstract
The invention relates to an optical module, comprising a semiconductor element having a surface that is sensitive to electromagnetic radiation and an objective for projecting electromagnetic radiation onto the sensitive surface of the semiconductor element (image sensor or camera chip, in particular CCD or CMOS). The objective preferably comprises at least one lens and one lens retainer.
In the optical module, an optical element having two sub-areas is arranged either in the space between the objective and the sensitive surface of the semiconductor element or between individual lenses of the objective in the entire cross-section of the beam path. All electromagnetic radiation that reaches the sensitive surface of the semiconductor element passes through the optical element.
A first distance range (e.g. near range) is imaged in a first area of the sensitive surface of the semiconductor element in a focused manner by a first sub-area of the optical element, and a second distance range (e.g. far range) is imaged in a second area of the sensitive surface of the semiconductor element by a second sub-area.
-
Citations
18 Claims
-
1. An optical module, comprising
a semiconductor element (4) having a sensitive surface (14) that is sensitive to electromagnetic radiation and an objective (1) for projecting electromagnetic radiation onto the sensitive surface (14) of the semiconductor element (4), characterized in that an optical element (11) having at least two plane-parallel sub-areas (11a, 11b) of different thicknesses is arranged either in the space between the objective (1) and the sensitive surface (14) of the semiconductor element (4) or between individual lenses of the objective in the entire cross-section of the beam path, such that a first distance range (8) is imaged in a first area of the sensitive surface (14) of the semiconductor element (4) by a first sub-area (11a) of the optical element (11), and a second distance range (9) is imaged in a second area of the sensitive surface (14) of the semiconductor element (4) by a second sub-area (11b) of the optical element (11).
-
18. A method of manufacturing a specific number of similar optical elements (11) each having at least two sub-areas (11a, 11b), wherein
a first glass wafer (30) of a first thickness is provided with a corresponding number of recesses (29), said first glass wafer (30) is covered with and connected to a second glass wafer (31) of a second thickness, and the specific number of individual optical elements (11) having at least two plane-parallel sub-areas (11a, 11b) of different thicknesses results from sawing (32) the combined wafer.
Specification