초록 ▼

An improved optical system is disclosed for projecting light in the form of an image to a remote target. The laser light source and a holographic optical element are mounted together in optical alignment. The optical element is created using iterative discrete computer encoding for optimum efficienc

An improved optical system is disclosed for projecting light in the form of an image to a remote target. The laser light source and a holographic optical element are mounted together in optical alignment. The optical element is created using iterative discrete computer encoding for optimum efficiency. In alternate embodiments, the diffractive optical element has a collimating lens encoded into the grating levels and it also performs soft aperture circularizing using either amplitude or phase control over the coherent light. An embossed diffractive optical element laminated to an injection-molded refractive element is also disclosed.

대표청구항 ▼

[ We claim:] [1.] A laser pointer comprising:a case suitable for being hand held, the case having an opening through which light is projected;a power source mounted within the case;a source of coherent light mounted within the case and controllably connected to the power source;a transparent substra

[ We claim:] [1.] A laser pointer comprising:a case suitable for being hand held, the case having an opening through which light is projected;a power source mounted within the case;a source of coherent light mounted within the case and controllably connected to the power source;a transparent substrate mounted within the case between the light source and the opening in the case;a holographic optical element on a face of the transparent substrate for forming the light from the light source into a beam shape of predetermined form.