See-through computer display systems

A head mounted display with an improved form factor providing a wide display field of view and a high transmission see-through view of the surrounding environment with an overlaid high contrast displayed image comprising:

• a. upper optics with a first optical axis including:
• i. an emissive image source that provides image light;
• ii. one or more lenses;
• iii. a stray light trap;
• and
• b. non-polarized lower optics with a second optical axis including:
• i. a planar beam splitter angled relative to the first and second optical axes;
• and
• ii. a curved partially reflective mirror;
• wherein the head mounted display provides a rectangular image with a reduced vertical field of view and a format that is greater than 22:9 thereby enabling a reduced thickness for the upper and lower optics for a given diagonal display field of view.