Optical Device With Stray Light Reduction

A manufacturing method for an optical device having a beam-forming element and a support body, the manufacturing method comprising:

• providing a first material for the beam-forming element which is permeable to a defined electromagnetic radiation and has a first defined refractive index (n1) in relation to the defined electromagnetic radiation;
• providing a second material for the support body which is absorbent for the defined electromagnetic radiation and has a second defined refractive index (n2) in relation to the defined electromagnetic radiation;
• forming the beam-forming element from the first material and the support body from the second material;
• and
• joining the beam-forming element and the support body to form an integrally joined component made of the first material and the second material,
• wherein the beam-forming element has a base surface and a top surface, which lie opposite one another, and a surrounding lateral surface, which connects the base surface and the top surface to one another,
• wherein the support body is formed with a receptacle for the beam-forming element and has at least one common contact surface with the surrounding lateral surface of the beam-forming element, and
• wherein the second defined refractive index (n2) of the second material is set in a defined ratio to the first defined refractive index (n1) of the first material in order to set a specific transition characteristic for the defined electromagnetic radiation at the contact surface.